.1: TITLE & JURISDICTION:

 

The 750 Trophy Series is organised and administered by the 750

 

Motor Club Ltd in accordance with the General Regulations of the

 

Royal Automobile Club Motor Sports Association (incorporating the

 

provisions of the International Sporting Code of the FIA) and these

 

Series Regulations. MSA Series Registration No. TBN

 

1.2: OFFICIALS:

 

1. Co-Ordinator: Giles Groombridge, The Seven Fifty Motor Club,

 

The Conservatory Suite, Donington Park, Castle Donington,

 

Derbyshire. DE74 2RP (01332 814548; This email address is being protected from spambots. You need JavaScript enabled to view it. ).

 

2. Eligibility Scrutineer: Any eligibility scrutineer at a race

 

meeting.

 

3. Series Stewards:

 

R.Knight. K.Messer. I.Sowman

 

1.3: COMPETITOR ELIGIBILITY:

 

1. Entrants must be fully paid up valid membership card holding

 

members of the 750 Motor Club Ltd and possess a valid current year’s

 

MSA Entrants Licences.

 

2. Drivers must be fully paid up valid membership card holding

 

members of the 750 Motor Club Ltd, be registered for the Series and

 

hold a valid MSA National B (or higher grade) Race Licence or be a

 

professional driver in possession of a valid Licence (featuring an E.U

 

flag) & medical issued by the ASN of a member country of the

 

European Union H26.2.1.

 

3. All necessary documentation must be presented for checking at

 

all rounds when signing-on.

 

1.4: REGISTRATION:

 

1. All drivers must register for the series by returning the

 

Registration Form with the Registration Fee to the Coordinator prior

 

to the Final Closing date for the first round being entered.

 

2. The Registration Fee is £75.00 payable to the 750 Motor Club

 

upon registration.

 

3. Registrations will be accepted from 1st January 2014 until the

 

closing date for the last round of the series.

 

4. Registration numbers will be the permanent Competition number

 

for the Series.

 

5. If any competitor wishes to change to a different car from the one

 

originally registered for the series, a completed registration form must

 

be sent to the Co-ordinator.

 

1.5: SERIES ROUNDS:

 

The 750 Trophy SERIES will be contested over the following

 

rounds:

 

Date Circuit Round/s

 

Mar 29/30 Donington GP 2

 

May 03 Silverstone 2

 

Jul 06 Rockingham 1

 

Jul 26/27 Anglesey 2

 

Aug 24 Silverstone 1

 

Sep 13/14 Cadwell Park 2

 

1.6: AWARDS:

 

1. All awards are to be provided by the Organising Club unless agreed

 

otherwise.

 

2. Awards Per Round: Awards will only be given to Classes A & C

 

2 to 4 starters - 1st in Class only

 

5 to 7 starters - 1st and 2nd in class only

 

8 or more starters - 1st, 2nd and 3rd in class

 

3. Presentations: Garlands for Class A and Class C and trophies are

 

to be provided for presentation at the end of each race.

 

4. Entertainment Tax Liability: Not applicable.

 

5. Title to all Trophies: In the event of any provisional results being

 

revised after any provisional presentations and such revisions

 

affecting the distribution of any awards, the competitors concerned

 

must return such awards to the Co-ordinator in good condition within

 

7 days.

 

2: SPORTING REGULATIONS - JUDICIAL PROCEDURES

 

2.1: Rounds:

 

In accordance with Section C of the current year’s MSA Yearbook

 

and 4.2. of these regulations.

 

3: SPORTING REGULATIONS –

 

RACE MEETINGS & RACE PROCEDURES

 

3.1: ENTRIES:

 

1. Competitors are responsible for sending in correct and complete

 

entries with the correct entry fees prior to the close of entry dates as

 

per the entry forms.

 

2. Incorrect or incomplete entries (including driver to be nominated

 

entries) are to be held in abeyance until they are complete and

 

correct and the date of receipt for acceptance of entry purposes shall

 

be the date on which the Secretary of the Meeting receives the

 

missing or corrected information or fee.

 

3. Any withdrawal of entry or driver/car changes made after

 

acceptance of any entry must be notified to the Secretary of the

 

Meeting in writing. If driver/vehicle changes are made after the

 

publication of Entry Lists with Final Instructions, the Competitor

 

concerned will be accepted in accordance with D25.1.12.

 

4. The entry fee for each round will be as per the Supplementary

 

Regulations.

 

5. In the event of any rounds being oversubscribed the Organising

 

Club, may in liaison with the championship Coordinator at their

 

discretion run Qualification Races. For Qualification Race procedures

 

see 3.13 of these regulations. Alternatively at double header race

 

meetings, should there be sufficient space within the timetable, the

 

Organising Club may divide the grid after qualifying into 3 separate

 

Groups. The Groups will then form 3 races whereby each competitor

 

participates in two races. All 3 races will be eligible for full

 

championship points.

 

6. Reserves are to be nominated on the Final List of Entries

 

published with the Final Instructions or Amendment Sheet Bulletins.

 

Reserves will practice and replace non-qualified (including drivers

 

practising out-of-session or qualifying by virtue of having raced at the

 

circuit within the previous 12 months), withdrawn or retired entries in

 

Reserve Number order irrespective of class. If reserves are given Grid

 

Places prior to issue of the first Grid Sheets for any round, the times

 

set in practice will determine their grid positions. If Reserves are

 

given places after publication of the grid sheet and prior to cars being

 

collected in the Official “Assembly Area” they will be placed at the

 

rear of the grid and be started without any time delay. Otherwise

 

they will be held in the Pitlane and be released to start the race after

 

the last car to start the Green Flag Lap or last car to take the start

 

has passed the startline or pitlane exit whichever is the later. Such

 

approval to start MUST be obtained from the Clerk of Course.

 

3.2: BRIEFINGS:

 

Organisers must notify competitors of the times and locations for all

 

briefings in the Final Instructions or Official Race Day Bulletins for the

 

meetings. Competitors must attend all briefings.

 

3.3: PRACTICE:

 

Practice sessions will be as per MSA Regulations Q4.5.Should any

 

practice session be disrupted, the Clerk of the Course shall not be

 

obliged to resume the session or re-run sessions to achieve the

 

championship criteria and the decision of the Clerk of the Course shall

 

be final.

 

3.4: QUALIFICATION:

 

Each driver should complete a minimum of 3 laps practice in the car

 

to be raced and in the correct session in order to qualify for selection

 

and order of precedence as set out in MSA regulations Q4.5. Drivers

 

practising out-of-session or qualifying by virtue of having raced at the

 

circuit within the previous 12 months will be placed at the back of the

 

grid. The Clerk of the Course and/or Stewards of the Meeting have

 

the right to exclude any driver whose practice times or driving are

 

considered to be unsatisfactory - as per MSA Regulation Q4.5.

 

3.5: RACES:

 

The standard minimum scheduled race distance will be 13 minutes

 

plus 1 lap.

 

3.6: STARTS:

 

Unless modified by the Organising Club’s Standing Regulations, the

 

following regulations will apply:-

 

750 Motor Club 750 Trophy Series 2014

 

Sporting & Technical Regulations

 

Page 2 of 6 - Issued 31/01/2014

 

1. There will be a minimum elapsed period of 3 minutes from cars

 

being released from the Assembly Area to the start of the race or, if

 

applicable, the green flag lap.

 

2. Start Procedure: In normal circumstances there will be no green

 

flag lap. A ‘two minute’ board will be shown on the startline; engines

 

should be started at this stage and the grid cleared of any pit crew. A

 

‘one minute’ board will be shown, followed by a ‘30 second’ board; a

 

‘5 second’ board will be displayed; approximately 5 seconds after this

 

board is withdrawn the red lights will be switched on; after between 2

 

seconds and 7 seconds they will be switched off to start the race. In

 

the event of the failure of these lights a National Flag will be used to

 

start the race.

 

In circumstances where a green flag is used, it will be waved from the

 

startline to commence the green flag lap. The pole position driver

 

should set a reasonable pace during this lap and slow down on

 

approaching the startline to allow the grid to close up. Drivers should

 

resume their correct grid positions with the minimum of delay. Any

 

drivers unable to start the green flag lap or start the race are required

 

to indicate their situation as per MSA regulation Q12.13.2. Drivers

 

may make up any lost grid position during this green flag lap, BUT

 

any drivers unable to maintain grid position to the extent that ALL

 

other cars are ahead of them, may complete the green flag lap but

 

MUST remain at the rear of the last row of the grid but ahead of any

 

cars to be started with a time delay.

 

A ‘5 second’ board will be displayed when the grid is stationary.

 

Approximately 5 seconds after this board is withdrawn the red lights

 

will be switched on; after between 2 seconds and 7 seconds they will

 

be switched off to start the race. In the event of the failure of these

 

lights a National Flag will be used to start the race.

 

3. Any car removed from the grid or driven into the pits after leaving

 

the Assembly Area will be held in the pitlane and may start the race

 

after the last car to take the start from the grid has passed the

 

startline or pit exit lane whichever is the later.

 

4. Excessive weaving to warm-up tyres - using more than 50% of the

 

track width - and falling back in order to accelerate and practice

 

starts, is prohibited.

 

3.7: RACE STOPS:

 

As per Q5.4 to 5.4.3. of the current MSA Yearbook.

 

3.8: RE-SCRUTINY:

 

All vehicles reported involved in contact incidents during races or

 

practice must be re-presented to the Scrutineers before continuing in

 

the races or practice.

 

3.9: PITS AND PITLANE SAFETY:

 

1. Pits: Entrants must ensure that the MSA, Circuit Management and

 

Organising Club Safety Regulations are complied with at all times.

 

2. Pitlane: The outer lane or lanes are to be kept unobstructed to

 

allow safe passage of cars at all times. The onus will be on all drivers

 

to take all due care and drive at minimum speeds in pit lanes.

 

3. Refuelling may only be carried out in accordance with the MSA

 

Regulation Q13, Circuit Management regulations and the SRs or Final

 

Instructions issued for each Circuit/Meeting.

 

3.10: RACE FINISHES:

 

After taking the chequered flag drivers are required to progressively

 

and safely slow down, remain behind any competitors ahead of them,

 

return to the pitlane entrance as instructed, comply with any

 

directions given by Marshals or Officials and to keep their helmets on

 

and harnesses done up while on the circuit or in the pitlane.

 

3.11: RESULTS:

 

All Practice timesheets, grid sheets and Race Results are to be

 

deemed PROVISIONAL until all vehicles are released by Scrutineers

 

after post-practice/race scrutineering and/or after completion of any

 

judicial or technical procedures.

 

3.12: TIMING MODULES:

 

The 750 Motor Club utilises AMB transponder-based timing and

 

competitors must have a compatible transponder fitted and working

 

and advise the race organisers of its number prior to the event. The

 

transponder is a TRANX 260 Direct Powered and is available from HS

 

Sports Ltd – 01260 275708.

 

3.13: CANCELLED/ABANDONED RACES:

 

There may be occasions when, due to circumstances on the day, a

 

scheduled race is not run, a race meeting is abandoned or the circuit

 

curfew is reached. The 750 Motor Club will use its best endeavours to

 

find space in another race meeting in the same season in order to run

 

a replacement championship round; preference will be given to a race

 

meeting where the affected formula is already scheduled to race. No

 

change of vehicle or class will be permitted without the permission of

 

the Championship Stewards and then only in exceptional

 

circumstances.

 

A: The qualifying session for a race/s does not take place.

 

Entry for the replacement race will be restricted to those who were

 

‘signed on’ for the race which is being replaced. A separate qualifying

 

session will normally be held. If no space can be found for a

 

replacement race, the number of championship scoring rounds will be

 

adjusted accordingly.

 

B: The qualifying session for a race/s has taken place, but the

 

race did not come under starters orders.

 

Entry for the replacement race will be restricted to those who were

 

qualified for the race which is being replaced; the grid for the

 

cancelled race will be used for the replacement race. If no space can

 

be found for a replacement race, the number of championship scoring

 

rounds will be adjusted accordingly.

 

C: A race is ‘red flagged’ before the leader has completed two

 

laps, but there is no time available to implement the relevant

 

section of MSA regulation Q5.4.1.

 

The replacement race will be in accordance with the relevant section

 

of MSA regulation Q5.4.1. If no space can be found for a

 

replacement race, the number of championship scoring rounds will be

 

adjusted accordingly.

 

D: A race is ‘red flagged’ after the leader has completed two

 

laps but less than 75% of its duration, but there is no time

 

available to implement the relevant section of MSA

 

regulation Q5.4.2 & 3.

 

If the Clerk of Course decides that a replacement race should be run

 

it will be in accordance with the relevant section of MSA regulation

 

Q5.4.2 & 3. If no space can be found for a replacement race, a result

 

will be declared retrospectively based on the order of crossing the

 

finish line at one lap less than at the first time of the showing of the

 

red flag and only cars which were under their own power at the

 

showing of the red flag will be classified.

 

If a race is ‘red flagged’ twice and the second red flag is before

 

the leader has completed two laps, the Clerk of Course may decide to

 

rerun the race on the same day subject to circuit curfew but is not

 

obliged to do so. If the decision is taken that it should not be rerun

 

on the day or it cannot because of circuit curfew, it will be considered

 

an abandoned race and the number of championship scoring rounds

 

will be adjusted accordingly.

 

4: EVENT RACE PENALTIES:

 

4.1: INFRINGEMENT OF TECHNICAL REGULATIONS:

 

1. Arising from post-practice scrutineering or judicial action: Should a

 

vehicle be found ineligible, the Clerk of Course will impose the penalty

 

set out in MSA Regulation C3.3.

 

2. Arising from post-race scrutineering or judicial action: Should a

 

vehicle be found ineligible, the Clerk of Course will impose the

 

penalties set out in MSA Regulation C3.5.1 a & b and may impose the

 

penalty set out in MSA Regulation C3.5.1 c.

 

3. Additional specific Championship penalties: See 4.2.2.

 

4.2: INFRINGEMENT OF NON-TECHNICAL MSA REGULATIONS

 

and the Sporting Regulations issued for the Championship:

 

1. In the case of a driver being excluded from a race, the Clerk of

 

Course will impose the penalties set out in MSA Regulation C3.5.1 a

 

& b and may impose the penalty set out in MSA Regulation C3.5.1 c.

 

2. In order to maintain standards of conduct, the Championship

 

Organisers will monitor all Officials/Observers reports of adverse

 

behaviour at race meetings. If any individual is included on two such

 

reports during one racing season the Championship Organisers will

 

request the Clerk of Course at future race meetings to consider

 

specific observation of that driver’s conduct.

 

750 Motor Club 750 Trophy Series 2014

 

Sporting & Technical Regulations

 

Page 3 of 6 - Issued 31/01/2014

 

3. The Clerk of Course may impose a ‘Stop-Go’ or ‘Drive through’

 

penalty during a race, in accordance with MSA Regulation Q12.6.

 

4. Any Competitor who is penalised under the Championship Sporting

 

Regulations at any stage of a Championship event and receives an

 

allocation of penalty points on their race licence in accordance with

 

MSA regulations, will receive a grid slot penalty at the next round in

 

which they compete following the allocation of penalty points, equal

 

to the number of penalty points which were allocated. Double

 

headers will be considered as two separate rounds; however if the

 

decision to allocate penalty points is delayed such that further

 

round/s of the Championship have taken place since the offence, the

 

grid slot penalty will be implemented at the next round in which they

 

compete after the allocation of the penalty points. The penalty will

 

mean that a Competitor will be moved back grid slot places from their

 

grid position (e.g. if a Competitor with a three grid slot penalty had a

 

qualifying time that was good enough for pole position then the

 

Competitor will start fourth on the grid). If for any reason the

 

imposition of this grid penalty is impractical (such as the competitor’s

 

qualifying time, starting from the pitlane etc) or the offence occurs at

 

the final meeting of the season, a time penalty of 5 seconds will be

 

added to the elapsed race time of the competitor.

 

5. TECHNICAL REGULATIONS

 

5.1 INTRODUCTION:

 

The following technical regulations are set out in accordance with the

 

MSA specified format and it should be clearly understood that if the

 

following texts do not clearly specify that you can do it, you must

 

work on the principle that you cannot. The fact that some

 

modifications are mentioned as prohibited does not imply that others

 

are allowed.

 

Anyone considering constructing a new car for this formula should

 

contact the Series Co-ordinator to ensure that the concept complies

 

with these regulations.

 

Cars already registered with, and competing in the 750 Trophy will be

 

allowed to compete as long as they conform to the regulations. Newly

 

constructed cars will be allowed as long as they are replicas of cars

 

already eligible, or a very close copy. All newly built cars must use

 

technology and materials which were readily available between 1922

 

and 1974, relevant to the era of the car being copied.

 

5.2 GENERAL DESCRIPTION:

 

The 750 Trophy Series is for cars based on the side-valve Austin 7

 

and other cars of similar performance. There are Three classes as

 

follows:-

 

Class A: Austin Sevens and Austin Seven Specials of all types. The

 

traditional look and feel of the cars must be maintained. Cars built to

 

the 750 Formula which have a history of competing in 750 Formula

 

races prior to 1966. Cars shall comply with the regulations which were

 

in force when they were constructed or last raced in a 750 Formula

 

race, except that mudguards, electrical equipment and lamps are not

 

required. Pre 1939 sports or racing cars of similar performance under

 

1100cc.

 

Class C: Non-Austin Seven engined cars such as 1172 cc side-valve

 

Ford engined cars, Reliant engined pre-1974 750 Formula cars,

 

historic sports or racing cars under 1200cc which are of similar

 

performance.

 

Class D: Historic 500cc racing cars which conform to the Eligibility

 

and Originality Regulations of the 500 Owners' Association for the

 

current year.

 

5.3 SAFETY REQUIREMENTS:

 

All newly built (as against restored) cars must comply with the

 

relevant paragraphs of the MSA Safety Regulations in the current

 

Yearbook, section K 1.6.2, 1.6.4 – 1.6.6; Appendix 1 Table 3, 3.1.1;

 

5.1, 5.2, 6; 8 – 13. Regard should also be paid to recommendations in

 

section 14.1 – 14.3.

 

All cars regardless of class, must comply with the relevant paragraphs

 

of the MSA Safety Regulations in the current Yearbook, section K

 

Appendix 1 Table 3, 3.1.1; 5.1, 5.2, 6.; 8 – 13.

 

Class C cars must also comply with section K 1 – 13. Seat belts, if

 

fitted, must be FIA homologated.

 

Towing eyes must have a minimum internal diameter of 60mm; as an

 

alternative a looped strap of suitable material may be bolted to the

 

chassis. This does not apply to single-seater cars.

 

5.4 General Technical Requirements and Exceptions:

 

All cars must comply with the requirements of sections J and Q19 of

 

the current MSA Yearbook. All vehicles must be of sound construction

 

and mechanical condition and be well maintained.

 

In all classes, modern type superchargers or turbo chargers are not

 

acceptable. Fuel injection is not allowed. The use of disc brakes is not

 

allowed unless the car when originally built was fitted with them.

 

As a minimum, two mirrors must be fitted, each with a minimum

 

surface area of 50 sq cms and giving a clear view to the rear, one on

 

each side of the centreline of the vehicle.

 

5.5 Chassis:

 

Class A: Except pre-1966 750 Formula, cars must be a Pre War

 

Austin Seven ‘A’ frame chassis. Both Short & Long wheelbase types

 

are acceptable. Chassis may be lightened or strengthened and may

 

have additional frame members added. Other pre 1939 chassis.

 

Class C pre ‘74 750 Formula cars: The chassis is to have as the

 

main longitudinals, either the side members of a pre 1939 Austin

 

Seven, (the top hat sections may be de-brimmed and boxed by

 

welding plates to the underside) or, alternatively, 2"x 2”x 16 swg

 

square section steel tubes of at least 52" length. To either type a

 

tubular space frame superstructure may be added. If the chassis is of

 

any other type and does not comply with this regulation then ballast

 

may be added to that car.

 

5.6 Bodywork:

 

1. General: Bodywork, for all classes of car, to be constructed in a

 

safe and workmanlike manner and presented in a clean and tidy

 

condition. There is no requirement for mudguards on non singleseater

 

cars except to prevent contact between the driver’s arm/s and

 

the tread of any tyre, whilst normally seated in the driving seat.

 

Classes A must have a windscreen or aeroscreen fitted in a normally

 

erect position.

 

2. Class A: Bodywork, which may be original or new, is to be based

 

on the styles produced by the Austin Motor company for both

 

production and works competition cars and contemporary pre-1939

 

Austin 7 based cars with bodies produced by other manufactures or

 

individuals. This covers single seater, two seat and four seat types.

 

Fibreglass replica body parts are acceptable. Other pre 1939 types.

 

3. Class C pre ‘74 750 Formula cars: As MSA Vehicle Regulation

 

with the following additional requirements. There shall be only one

 

cockpit space for both driver and passenger, the opening of which

 

shall be large enough to accept a horizontal quadrilateral frame with

 

hinged joints and one side 32” long, two opposite sides 18” and the

 

fourth side 25”. In checking the cockpit opening any obstruction

 

caused by roll bar supports or fire extinguisher may be ignored. If the

 

bodywork does not comply with the above regulation then the car

 

may be ballasted to compensate. The bodywork should be period for

 

pre 1974 in all cases.

 

4. Passenger Seats/space for sports cars (class A): Passenger

 

seats need not be carried in any of the above classes. The passenger

 

seat space must be suitable for an adult and remain clear apart from

 

the intrusion of a fire extinguisher or removable roll-over bar support

 

struts if fitted.

 

5. Ground clearance: As per MSA Regulations J5.20.11.

 

6. Aerodynamic devices: Wings or ground effect devices are not

 

allowed.

 

5.7 ENGINES:

 

Class A: The engine must be based on the pre-1939 Austin Seven

 

747 cc. side valve design. The crankcase and cylinder block must be

 

of the Austin design and manufacture or identical pattern part. Two

 

and three bearing Austin crankcases are acceptable. Crankshafts, con

 

rods and pistons are free but must not use any prohibited material.

 

The engine must have a stroke of 3 inches and a bore of not

 

exceeding 0.084". Non Austin oil pumps and water pumps may be

 

fitted. Overhead valve conversions are banned except for the vintage

 

LAP OHV conversion. Pre 1939 type superchargers only are allowed

 

(vane or early Rootes type). Turbochargers are not allowed. Single or

 

multiple 'period type’ carburettors are allowed. Modern type

 

carburettors not allowed. Fuel injection is not allowed. De-Siamesing

 

of the inlet ports is not allowed. Ignition system that require any

 

microprocessor control system will not be permitted. Camshaft free -

 

750 Motor Club 750 Trophy Series 2014

 

Sporting & Technical Regulations

 

Page 4 of 6 - Issued 31/01/2014

 

Austin gear drive to be retained. Other pre 1939 engines under

 

1100cc.

 

Class C pre ‘74 750 Formula cars: The engine may be (a) Reliant

 

OHV 642cc, (b) Reliant 747cc sidevalve, (c) 747cc sidevalve Austin 7,

 

(d) Reliant OHV 748/850cc, (e) Coventry Climax 750cc.

 

If the Reliant OHV 642cc engine is used, it must have a standard

 

cylinder head casting and standard cylinder block/crankcase. The

 

standard stroke of 2.4 inches must not be altered, nor must the bore

 

exceed 2.28 inches giving a capacity of 642cc. Forced Induction (ie

 

supercharging) is only permitted on engines (b) and (c) above, ie the

 

sidevalve engines. The camshaft is free provided that it remains in

 

the manufacturer’s original position and is the sole means of

 

operating the valves. There must be no more than two valves per

 

cylinder, and the valves must remain parallel to each other.

 

Carburetion shall be by only one carburettor choke. Fuel injection

 

and external slide throttles are prohibited. The capacity of either of

 

the sidevalve units must not exceed 803cc; OHV or OHC conversions

 

are not allowed. Only ignition systems that use only one trigger,

 

inside the distributor or external, to initiate the low-tension current

 

will be permitted. Any system that requires more than one sensor or

 

input to provide another signal/voltage for any

 

electronic/microprocessor control system will not be permitted.

 

If the Reliant OHV 748 or 850cc engine is used, all parts must be

 

standard Reliant, the cylinder head may be from any OHV Reliant;

 

porting is permitted and compression ratio may be increased; on the

 

850cc any standard camshaft from any Reliant engine may be utilised

 

- reprofiling/regrinding is not permitted; on the 748cc the camshaft is

 

free; camshaft timing is free; cylinder block, liners and pistons to be

 

standard Reliant; carburetion shall be by only one carburettor choke

 

on an inlet manifold of free design - alternatively a standard Reliant

 

SU carburettor on a standard Reliant manifold may be used; no

 

restrictor plate is required on either carburettor. Exhaust manifolds

 

are free. Oil system free, either wet or dry sump. Only ignition

 

systems that use only one trigger, inside the distributor or external, to

 

initiate the low-tension current will be permitted. Any system that

 

requires more than one sensor or input to provide another

 

signal/voltage for any electronic/microprocessor control system will

 

not be permitted.

 

Coventry Climax 750cc: All parts must be standard and

 

unmodified, with the exception of the flywheel which is free.

 

Compression ratio may not be increased. Oil system free, either wet

 

or dry sump. Carburetion shall be either by:- only one carburettor

 

choke on a free inlet manifold, or two 1¼ “ SU carburettors on a

 

modified standard inlet manifold. Only ignition systems that use only

 

one trigger, inside the distributor or external, to initiate the lowtension

 

current will be permitted. Any system that requires more than

 

one sensor or input to provide another signal/voltage for any

 

electronic/microprocessor control system will not be permitted.

 

Other Engines Under 1200cc:

 

Engines not complying with the above will be allowed but must be of

 

similar performance. If an engine not listed above is found to have

 

excessive power it may be restricted. Restriction will be achieved with

 

a plate mounted between the carburettor and inlet manifold with an

 

aperture to allow gas flow.

 

5.8 Suspensions:

 

Class A: The rear axle is to be an Austin Seven with torque tube. The

 

axle is to be fixed to quarter elliptic springs attached to the rear ends

 

of the 'A' frame. The front axle may be an Austin Seven rigid beam or

 

lowered sports type Austin Seven beam type suspended on a

 

transverse leaf spring, a split front axle or Bowdenex and Speedex

 

front suspensions are allowed. Front and rear shock absorbers are to

 

be friction type or hydraulic type. The wheelbase may be 6'3" or 6’9".

 

The front track is free.

 

5.9 Transmissions:

 

Gearbox class A: Pre 1939 Austin 7 types with three or four forward

 

gears plus mandatory reverse. Replacement close ratio gears may be

 

fitted. Other pre 1939 gearboxes.

 

Gearbox Class C pre ‘74 750 Formula cars: Pre 1939 Austin 7 type,

 

Reliant sidevalve or Standard Reliant type with no more than four

 

forward gears and reverse. Replacement close ratio gears may be

 

fitted.

 

Other gearboxes of pre 1974 design.

 

5.10 Electrics:

 

1. Exterior lighting: Not applicable.

 

2. Rear Warning Light: An LED rear fog light to EU regulation 7, an

 

FIA homologated LED rear warning light, or an LED stop light to EU

 

regulation 38 is mandatory, and must be mounted within 10cms of

 

the centreline of the vehicle. The warning light must be switched on

 

when required by the Clerk of the Course.

 

3. Batteries: 6 or 12 volt types allowed. Starter motors - an

 

electrically powered starter motor may be used and is recommended

 

but not mandatory.

 

4. Generators: not required.

 

5.11 Brakes - Classes A:

 

1. The brakes are to be drum type either mechanical or hydraulic

 

operation. Early Austin pressed steel drums are not recommended.

 

2. For Class C pre ‘74 750 Formula cars: a dual separate braking

 

system is required, whether mechanical, hydraulic or combined. Disc

 

brakes ore not allowed unless the car when originally built was fitted

 

with them. Other drum brakes of pre 1939 type.

 

5.12 Wheels/steering:

 

1. Wheels

 

(i) Class A - spoke type with Austin 7, three-stud centres. Minimum

 

rim diameter 14’’; maximum width 5”. Speedex pattern wheels are

 

allowed on Speedex cars. The three-stud Austin wheel attachment

 

must be used with large, plain, heavy washers under 'locknut' wheel

 

nuts. Original type Austin 7 brass wheel nuts and peg wheel location

 

not allowed. Other wheels of pre 1939 type.

 

(ii) Class C – Wheels must be period for pre 1974

 

2. Steering

 

Class A: An Austin Seven steering wheel/contemporary equivalent,

 

Austin Seven steering box or reproduction copy and column to be

 

used. Other pre 1939 steering boxes.

 

Class C: Free.

 

5.13 Tyres:

 

Class A: Any tyre, with a profile higher than 70, in the current year’s

 

MSA Blue Book List 1A or List 1B may be used and must be to MOT

 

requirements in every respect.

 

Also permitted are

 

Dunlop L section or R5 tyres.

 

450 x 15 Dunlop

 

500 x 15 Dunlop

 

145/R x 14 Camac Road radials

 

145/80 x 14 Bridgestone radials

 

No alteration to the tyre from the manufacturer’s specification is

 

permitted. Re-cutting, re-grooving or in any other way modifying the

 

tread pattern is not permitted. All the manufacturer’s data must be

 

clearly visible. Buffing of sidewalls to remove data is prohibited. The

 

use of tyre heating/heat retention devices, tyre treatments are

 

prohibited. Other tyres used by pre 1939 cars.

 

Class C: Road or treaded racing type. Low profile types allowed. If

 

‘cut’ slicks are used, there must be a minimum of 3 equally spaced

 

circumferential grooves of at least 6mm width cut to the fullness of

 

the tread, with a minimum tread depth of 2mm. The use of tyre

 

heating/heat retention devices, tyre treatments and compounds is

 

prohibited.

 

5.14 Vehicle Weight:

 

(Class A cars only) No minimum weight.

 

5.15 Fuel tank/fuel:

 

A non-return valve must be incorporated in the vent system.

 

1. There must be a fire-proof bulkhead between the fuel tank and

 

the cockpit.

 

2. Fuel lines passing through the cockpit must be rigid metal or metal

 

braided flexible construction.

 

3. Fuel: Only petrol as defined in Section B Nomenclature &

 

Definitions, Pump Fuel a) section of the MSA Yearbook for the current

 

year and complying with BS4040, BSEN228 or BS7800 may be used;

 

fuel which exceeds the stated RON (max) levels in Appendix 1 of

 

Section B Nomenclature & Definitions is prohibited even if it is

 

sold/promoted as being legal for UK Competition and/or obtainable

 

from ‘roadside’ pumps. The use of additives by competitors which

 

750 Motor Club 750 Trophy Series 2014

 

Sporting & Technical Regulations

 

Page 5 of 6 - Issued 31/01/2014

 

boost the octane rating (RON) in any petrol is prohibited. At the end

 

of practice and the race at least 3 litres of petrol from the tank of the

 

competing car must be available to the scrutineers for analysis.

 

Compliance with minimum weight for the car will be taken before the

 

petrol is removed.

 

Class A cars running on fuel not complying with the above fuel

 

regulation will be moved from class A to class C.

 

5.16 Silencing:

 

All vehicles must comply with the relevant maximum noise limits set

 

out in MSA Blue Book regulation J. Chart 5.18.

 

5.17 Numbers and Series Decals

 

Race numbers must be displayed on each side of the vehicle (front

 

doors, alongside the cockpit or on rear wing end plates) and as far

 

forward on the front of the vehicle as possible. 750 Motor Club

 

decals must be affixed prominently near all number backgrounds. For

 

series with classes, class letters must be affixed near the number

 

backgrounds. Series Sponsor’s decals (where applicable) must be

 

affixed in or near the positions detailed on the diagram supplied with

 

those decals. 750 Motor Club and Series Sponsor’s decals must take

 

preference to any other decals. Failure to comply will render the

 

vehicle and driver ineligible to race. A maximum of 5 decals (in

 

addition to Series sponsor, 750 Motor Club, car name and driver’s

 

name decals) of up to 355 sq. cms. may be repeated on opposite

 

sides and ends of the car. These decals may not be related to form a

 

larger name or an image.

 

5.18 Prohibited Materials:

 

Magnesium alloy, titanium, Kevlar and carbon fibre are prohibited.

 

Glass fibre, plastic laminate body parts may be used.

 

6. APPENDICES

 

6.1 Additional Eligibility for Class A.

 

1. Pre-1966 750 Formula cars must comply with the regulations in

 

force when the car was raced before 1966. No further development is

 

permitted. Pre 1939 sports or racing cars of similar performance.

 

6.2 Additional eligibility appendices for Class C

 

1. Eligibility regulation for 1172 Ford SV engined cars for

 

Class C:

 

A) Chassis: Free. Engine to be in front position, ahead of driver.

 

B) Bodywork: Two seat sports or saloon types to be constructed in

 

a safe and workmanlike manner and be presented in a clean and tidy

 

condition. The internal width of the cockpit must be at least 32" wide

 

x 28".

 

C) Engine: The power unit is to be based on side valve Ford 993cc

 

or 1172cc engine casting (Ford 8, 10 or 100E types) of any type.

 

Modifications must not include forced induction (supercharging,

 

turbocharging), conversion to OHV, reversal in function of the inlet

 

and exhaust ports or the dividing of the siamesed inlet ports. Ford

 

crankshaft to be used. Con rods are free. The standard stroke of

 

92.55mm must not be exceeded and the bore must not be greater

 

than the Ford ‘10' 63.5mm plus 0.060" rebore allowance. Standard

 

bore centres must be retained. Carburettors: two single or one twin

 

choke are permitted. IGNITION: Only ignition systems that use only

 

one trigger, inside the distributor or external, to initiate the lowtension

 

current will be permitted. Any system that requires more

 

than one sensor or input to provide another signal/voltage for any

 

electronic/microprocessor control system will not be permitted.

 

D) Suspension: Solid axles front and rear, or IFS with solid rear

 

axle. Springs and dampers free.

 

E) Transmission: Three or four speed conventional car gearboxes

 

with mandatory reverse.

 

F) Electrics: as per 5.10.1; 5.10.2 & 5.10.4.

 

G) Brakes: Solid discs up to 9” diameter, with a cast iron 2-pot

 

calliper from a series production car may be fitted only if disc brakes

 

were fitted in period on the front wheels; discs may not be crossdrilled

 

or grooved. Rear brakes are to be drums. Application may be

 

made to the Series Coordinator for cars not complying with those

 

restrictions and a waiver will be considered.

 

H) Wheels/Steering: No restrictions.

 

I) Tyres: Treaded road or racing - slicks not permitted.

 

Remould/retread tyres not permitted. If ‘cut’ slicks are used, there

 

must be a minimum of 3 equally spaced circumferential grooves of at

 

least 6mm width cut to the fullness of the tread, with a minimum

 

tread depth of 2mm.

 

J) Vehicle weight: Minimum weight 8cwt with no allowance for

 

topping up of fluids.

 

K) Fuel tank/fuel: as per 5.15.1; 5.15.2; 5.15.3.

 

2. Eligibility of other Vintage, PVT, Historic and Classic cars

 

up to 1200cc, including 750 Formula up to December 1973,

 

(Eligibility of newly constructed cars is described in 5.1).

 

Historic and Classic cars must be conforming to the regulations of

 

their historic formula in all respects. No development is allowed or

 

changes to engines, wheels, tyres, chassis etc., from the historic

 

regulations pertaining to that formula. All of these cars are only

 

accepted at the discretion of the Series Coordinator and Eligibility

 

Scrutineer.

 

Eligibility regulations for Historic 500 cc cars for Class D:

 

a) Cars must have been originally built before 31st December 1961

 

and must comply with the original specification, the guidelines for

 

which are given below. (Based on the 500 Owners' Association

 

regulations for such cars)

 

b) Chassis, frame and suspension: This should be basically original

 

and not have been subject to any major alterations. Chassis that are

 

severely damaged and require rebuilding will be subject to inspection

 

and proven history of the vehicle will be required.

 

c) Wheels: Replacement wheels of the same diameter as original

 

and up to 1" wider may be used.

 

d) Tyres: As from 1st January 1982 the 13" wheels and tyres have

 

been required to comply with a minimum rolling diameter and

 

maximum profile width formulated to prevent the use of compounds

 

which are not available to the users of 15" wheels. The tyres which

 

are allowed are:-

 

A. Road Tyres

 

(i). Radial ply tyres which are of the types listed and approved in the

 

MSA 'Year Book' marked 125, 135, 145, 155, 165 x 15.

 

They may be of HR or SR speed rating. They must not be marked

 

with anything but the width size and the wheel size e.g. 145 SR 15.

 

Therefore '70', '65' and '60' profile tyres are not eligible.

 

(ii). Crossply tyres marked 560, 590, 600 and 640 x 15.

 

B. Racing Tyres

 

(i). Goodyear Formula 'Vee' tyres marked 590 x 15 and 620 x 15.

 

These tyres are no longer manufactured but many are still in use.

 

(ii). Dunlop 15" L or M profile tyres marked 450 x 15, 500 x 15 or 550

 

x 15. Compounds and tread patterns are free.

 

(iii). Dunlop Formula 'Vee' tyres marked 120/590 x 15 or 135/620 x

 

15 in any compound which Dunlop make them. In the very few cases

 

where it is possible to prove that the car was raced on 13" rims under

 

the original formula the only tyres eligible will be Dunlop L or M

 

profile ones.

 

e) Bodywork: This should be of the original basic shape and

 

preferably made of the same material as the original.

 

f) Engine and gearbox: The types are restricted to those available at

 

the time that the cars were raced i.e. pre - 31st December 1961. The

 

engine must be externally, as original. Internal modifications are

 

allowed, i.e. this permits free modification of cams, pistons, valves

 

etc. "Replica" engines such as John Tickle Manx Norton and Modern

 

Speedway JAPs are allowed provided that they are externally similar

 

to the original engines; in the case of Cole crankcases - they will be

 

permitted without modification. Twin plug heads of the period are

 

allowed. The gearbox must retain the same number of ratios as the

 

original but the ratios themselves are of free choice. The Norton

 

Commando box is acceptable being basically a pre-1961 design.

 

Clutches must be either solid disc or cork insert friction plate design.

 

A Bewley clutch of this type may be used.

 

g) Engine ancillaries: The choice of carburettor, magneto,

 

coil/contact-breaker ignition are all free. Transistorised ignition is not

 

allowed.

 

h) Fuel and fuel additives: As per relevant Formula Junior/500

 

Owners Association regulations.

 

i) Supercharging: Cars raced in the 'up to 500cc' class cannot be

 

supercharged.

 

j) Modifications: Original modifications to individual cars carried out

 

before 31st December 1961, are usually accepted. All cars must

 

comply with MSA Regulations.