Car Classes & Rules

Car Classes & Rules

We race 5 classes here at Pontyslot:-

  1. 1/32nd Formula 1

  2. 1/32nd Production (Sports cars)

  3. 1/32nd Saloon

  4. 1/24th Production (See calendar for seasonal body shell changes)

  5. 1/24th Group 12

We also run hard bodied Scalextric type cars on the Wednesday after the 1/24th Group 12 class, we clean the track surface beforehand.

RULES

Formula 1 

1.      All cars must have a driver securely fixed, and consisting of a minimum of head, shoulders, arms and top segment of the steering wheel joining the hands. None of these items may be just painted on.

2.      The front wheels of all cars must make a minimum angle of 85 degrees with the track.  One-piece wheels and tyres shall have the appropriate part black

3.      Motors will be JK Falcon as used in BSCRA 1/32nd Production, Mid America Products Eagle or sealed Proslot 4002FK.

4.      Motor Shafts may be shortened.

5.   Chassis is Free choice.

6.      Rear body details (e.g. gearbox and diffuser) may be omitted.

7.      No part of the motor, chassis or gears (excluding axles and axle tubes) shall be visible when viewed from above or through the windscreen.

8.      The maximum width of the chassis is 34 mm except for the section no more than 68mm long between the trailing edge of the rearmost front tyre and the leading edge of the rear tyre where the maximum width is 52 mm. This limitation does not apply to scale engine or exhaust detail or suspension detail as found on the prototype. Suspension detail thicker than 1.6 mm rod or wire may result in disqualification. Suspension detail shall be in the correct position and may not be filled in with lead or other weights. Up to 4 body mounting pins will be allowed outside this 52mm limit.

9.      Vacuum formed plastic bodyshells only are permitted and these shall not exceed 1 mm in thickness at any point. No weights may be attached to the body so as to be outside the chassis width limit.

10. Front Wheels must touch and roll on the track. Front tyres must be black.

11. Unmodified GMS Devil chassis shall be allowed to race in Formula 1. The chassis width, and guide lead rules shall not apply to this chassis, but all other car standards in Sections A and B shall apply.

12. The section of extra bodywork either side of the nosecone to cover the chassis shall be painted or marked in black or grey.

13. Cars must carry a clearly legible racing number in at least one APPROPRIATE place

1/32 Production Rules

1.      Bodies must have major visible appendages, such as lights, intakes, engine detail, etc. must be shown in their correct positions and colours. Clear plastic bodies shall be painted. (This includes painting the body sides).  Moulded in wings must be realistic in appearance (either by black dividing lines, shadow, or contrasting colours).  Any requirements for specific bodies included in the approved body list are mandatory.

2.      All cars must have transparent windscreens and windows as found on the prototype.

3.      All cars must have a driver securely fixed, and consisting of a minimum of head, shoulders, arms and top segment of the steering wheel joining the hands. None of these items may be just painted on.

4.      Cars may use 2 dimensional front wheels as permitted under BSCRA regulations. The 3D front wheels of all cars must make a minimum angle of 85 degrees with the track.  One-piece wheels and tyres shall have the appropriate part black

5.      The rear bodywork may be omitted only where:-

6.      a) The original car did not have rear bodywork.     OR

7.      b) The wing is the rearmost part of the bodywork.

8.      Cars must carry clearly legible racing numbers in at least two APPROPRIATE places.

9.      No part of the motor, chassis,  gears or tyres shall be visible when viewed from above or through the windscreen or windows.

10. The following chassis only may be used:     ‘Eurotoy II’, Parma International 32, GM Demon, TWP “Euro toy” or BSCRA Genesis

11. Permitted motors are Mura Wasp, Super Wasp, Proslot Wasp, Viper/RJR Hornet JK Falcon, Mid America Products Eagle or sealed Proslot 4002FK.

12. Additionally the JK Laser Cut Chassis as used in BSL may be used, but only with a JK Falcon motor Mid America Products Eagle or sealed Proslot 4002FK.

1/32nd Saloon Rules

1.      The front wheels of all cars must make a minimum angle of 85 degrees with the track.  One-piece wheels and tyres shall have the appropriate part black

2.      Where the prototype has closed wheel arches the competitor may choose to cut them out or leave them in.  In all other cars all road wheels shall be visible from the side to at least wheel center height. The front wheel arches need not be cut out provided they are left unpainted and the wheels are visible from the side. Alternatively, 2 dimensional front wheels may be fitted All 3 dimensional wheels shall rotate. The outside edge of 3 dimensional front wheels shall be within 6mm of the outside of the chassis. Front tyres must be black.

3.      The rear bodywork of Saloon bodies (class 3) , as fitted to the prototype, must not be omitted. The lower edge of the rear bodywork must not be more than 10 mm above the track across its full width. The Saloon height applies to the rearmost 10mm of the body.  The roof may exceed this height.  BSCRA may permit specific saloon bodies to exceed the rear body height limit, the approved body list states which bodies may exceed this height limit .

4.      Cars must carry clearly legible racing numbers in at least two APPROPRIATE places.

5.      No part of the motor, chassis,  gears or tyres shall be visible when viewed from above or through the windscreen or windows.

6.      There is no restriction on the type of drive or chassis that may be use

7.      Motor must be Group 12 with single magnets, 0.513 armature, ball race at can end only and brushes may be shunted.

8.      Magnets may be shimmed, honed and notched for axle clearance.

 

1/24th Production Rules

1.      Bodies must have major visible appendages, such as lights, intakes, engine detail, etc. must be shown in their correct positions and colours. Clear plastic bodies shall be painted. (This includes painting the body sides).  Moulded in wings must be realistic in appearance (either by black dividing lines, shadow, or contrasting colours).  Any requirements for specific bodies included in the approved body list are mandatory.

2.      Bodies must be of the correct type for the current Championship.

3.      All cars must have transparent windscreens and windows as found on the prototype.

4.      All cars must have a driver securely fixed, and consisting of a minimum of head, shoulders, arms and top segment of the steering wheel joining the hands. None of these items may be just painted on.

5.      Cars may use 2 dimensional front wheels as permitted by BSCRA regulations.The 3D front wheels of all cars must make a minimum angle of 85 degrees with the track.  One-piece wheels and tyres shall have the appropriate part black

6.   Cars must use a BSCRA approved 1/24th Production  chassis.

7.   Rear bearings may be soldered in position.

8.  The rear pillar blocks may be braced by a single U shaped piece of piano wire not exceeding 16swg.

9.  The chassis must use the original steel pans. Aluminium or lightened pans are not permitted.

10. The guide tab may not be bent to alter the ride height at the front of the chassis.

11. Guide flag may be cut down.

12. Lead ballast may be glued or soldered on top of the pans or chassis centre section.

13. Solid front wheels of a minimum diameter of ½” must be fitted.

14. Pin tubes may be fitted in the original holes in the pans or soldered vertically above the original mounting positions.

15. A Parma Hot Wing may be fitted if appropriate to the chassis

16. Motor must be a Parma Death Star 16D, JK Falcon ,Mid America Products Eagle or sealed Proslot 4002FK. Motors may be soldered in place and braced with a single piece of piano wire not exceeding 16swg.

17. The type of body to be run in this class shall be decided at the AGM for a period of 2 years. The current bodies are: Summer series – Open top Group 7 Sports cars (Can AM/Interserie). The winter series will run DTM shells with working front and rear lights.

Permitted Motor Modifications.

  1. JK Falcon, Mid America Products Eagle or sealed Proslot 4002FK – None. Motor must not be modified in any way. Any signs of opening or tampering will render the motor ineligible.
  2. 16D.  Free choice of brushes/brush gear. Brushes may not be shunted.
  3. Bearings must be plain (no ball races)
  4. Armature may be balanced, however, no signs of balancing should be visible when the motor is assembled.
  5. Axles free choice
  6. Gears any type and any ratio.
  7. Rear axle bearings must be plain. No ball races.
  8. Tyres – Free choice.

1/24th Open Group12 Rules

1.      Bodies must have major visible appendages, such as lights, intakes, engine detail, etc. must be shown in their correct positions and colours. Clear plastic bodies shall be painted. (This includes painting the body sides).  Moulded in wings must be realistic in appearance (either by black dividing lines, shadow, or contrasting colours).  Any requirements for specific bodies included in the approved body list are mandatory.

2.      All cars must have transparent windscreens and windows as found on the prototype.

3.      All cars must have a driver securely fixed, and consisting of a minimum of head, shoulders, arms and top segment of the steering wheel joining the hands. None of these items may be just painted on.

4.      The front wheels of all cars must make a minimum angle of 85 degrees with the track.  One-piece wheels and tyres shall have the appropriate part black

5.      Where the prototype has closed wheel arches the competitor may choose to cut them out or leave them in.  In all other cars all road wheels shall be visible from the side to at least wheel centre height. The front wheel arches need not be cut out provided they are left unpainted and the wheels are visible from the side. 2 dimensional wheels may be used at the front. All 3D road wheels shall rotate. The outside edge of 3 dimensional front wheels shall be within 6mm of the outside of the chassis.

6.      The rear bodywork may be omitted

7.      The body must be painted in at least 2 different colours

8.      Cars must carry clearly legible racing numbers in at least two APPROPRIATE places.

9.      No part of the motor, chassis,  gears or tyres shall be visible when viewed from above or through the windscreen or windows.

10. Gears are free, but they must not protrude below the underside of the chassis.

11. Free Choice of Chassis.

12.Bodies as allowed in BSCRA 1/24th Open Group 12

13. Magnets may be shimmed, honed and notched for axle clearance.

Hard Body Rules

1. Body – Hard Plastic bodies only. Car models must be shown to have competed at Le Mans during 60’s and 70’s. The Ford P68, although it never competed at Le Mans, is eligible for this class.
2. All cars must be finished in a style sympathetic to the period being represented and carry at least two racing numbers.
3. All cars must have clear window glass etc. fitted where it appears on the prototype. Vacuum formed windows and headlight covers are permitted.
4. All cars must have a suitably decorated and 3 dimensional, representation of a driver consisting of at least a head, shoulders, arms, hands and the upper part of a steering wheel.
5. Vacuum formed interiors are permitted, but must be realistically painted and comply with regulation 4 above.
6. Chassis – Plastic chassis only, 3D printed chassis are permitted.

7. Motor – Should not exceed 25K.
8. Wheels:-
Front Wheels – Free Choice, inserts must be fitted to alloy wheels
Front Tyres – No sponge rubber or silicone tyres, otherwise free choice. May be glued and trued. Front tyres may be coated with cyanoacrylate or varnish.
Rear Wheels – Free Choice, inserts must be fitted to alloy wheels
Rear Tyres – No sponge rubber or silicone tyres, otherwise free choice. May be glued and trued.
9. Ground Clearance – Drive gears, bodywork etc. must remain clear of the track surface at all times.
10. Gears – Free choice.
11. Guide – Free choice. The guide must not be visible when the car is placed on the track with the guide in the straight ahead position.
12. Width – Maximum width to be determined by body. The tyres should not be visible from above when the car is on the track.

13 Eligible Manufacturers – any classic Le Mans cars from any manufacturer as long as they meet the rules of the class.
14. Body fixings may be loosened to allow the body to move on the chassis. The edges of the chassis and inside edges of the body may be sanded smooth to allow the body to move freely. Where the body is secured by screws, the screw holes should be covered with tape or blue-tack to prevent the screws falling out.