All sidecars regardless of class maybe on track at the same time!
On track contact will be dealt with accordingly.
TECHNICAL REQUIREMENTS:
Design: An outfit or sidecar is a three-wheel vehicle leaving two tracks, with only the rear wheel driving and only the front wheel steering, originating from a motorcycle frame. The frame may be cut down or altered to provide either a sitting or kneeling position for the driver. Driver’s point of contact with steering controls must be rigidly attached to front forks or other steering assembly. Center hub steering is prohibited. Swing arms must be 2-sided, of period design and materials, and have a shock absorber located on each side without secondary linkage (OEM excepted; e.g. Vincent and NSU). Both sitter and kneeler designs are eligible, Sidecar chair must be rigidly affixed to cycle portion of the outfit by a minimum of four rigid mechanical or welded connections. Driver must be positioned generally behind the engine. Steel tube frame construction only: no stressed skin or monocoque construction. Sidecar design: front exit only, e.g.: passenger must lean outside of the track of the outfit in front of the sidecar wheel. Chair may be on the right or left of cycle portion of the outfit. Outfit must be equipped with appropriate handholds for the passenger including but not limited to a passenger handhold on the rear outside of the outfit opposite the chair and to the back of the driver.
Dimensions: The two wheels forming a single track must be no more than 3 inches out of line, measured center-to-center. Maximum track is 44” and minimum track is 32” (center-to-center of tires). Maximum width of outfit is 72”. Minimum ground clearance of 3” between any part of the outfit and an imaginary horizontal plane beneath the tires, with the outfit ready for competition (driver, passenger, oil, fuel).Maximum fuel capacity is 40 liters (10.56 gallons) Maximum engine offset (measured from a point equidistant from piston-to-piston to an imaginary line drawn between the centers of the front and rear tires. Minimum clearance front tire to outfit is 1”. There shall be sufficient clearance between the handlebar grips and any part of the outfit, at any time, such that the driver shall not become trapped or unable to operate the controls.
Suspension Travel: Minimum 1” on front and rear wheels.
Any sidecar wheel movement relative to the platform is prohibited.
Wheels & Tires: Front & rear wheels must have spoke construction, sizes as per class. Chair wheel may be solid construction. No slicks or hand cut tires..
Brakes: Working brakes on front and rear wheel is mandatory; sidecar optional. All brakes are to be driver operated only. Drum or single disc per wheel, provided that all disc brake components (disc rotor, caliper and master cylinders) are components (or functionally accurate reproductions) actually available in the applicable period. Friction linings and pads are unrestricted.
Gearbox: Applicable period components (or functionally accurate reproductions).
Oil Coolers: Where fitted must be located so as to be generally visible to the driver and passenger in their operating positions.
Safety Switch: All outfits must be equipped with a functional “Master” switch mounted within reach of both the driver and passenger. The switch must be capable of stopping a running engine and turn off all other electrical systems.
The switch plate and surrounding area must be read and labeled for identification by the driver, passenger, corner workers and other personal.
Bodywork: Sidecar wheel, rear wheel, drive and primary chains must be adequately protected to preclude the driver or passenger becoming entangled. Period dustbin style fairings are encouraged. All bodywork and streamlining must be strictly consistent with the applicable period. Down force generating devices and designs are expressly prohibited. The driver’s torso and the passenger’s body must be completely visible from above at all times.
SIDECARS must also comply with all other applicable AHRMA rules.
CLASSIC SIDECAR OUTFITS (P1) are limited to outfits built before 1968 and outfits constructed after such date that are consistent in design and construction with outfits actually built in the Classic period, subject to the following restrictions:
Engines: one or two cylinder, two or four stroke, built before 1968. Maximum 350xx two stroke, 650cc overhead valve, 750cc sidevalve.
Examples:
AJS 7R
Ducati bevel drive single
Matchless G50
Norton Manx
Honda CB/CL450 w/OEM (stock) engine internals & OEM carburetors
BMW Rennsport, R50/5 and R60/5 w/OEM (stock) engine internals, maximum 26mm carburetors and four-speed gearbox.
Wheels & Tire Size: Wheels are to be a minimum 16 inch diameter front and rear w/minimum 8 inch diameter on sidecar. Tires are to be a maximum 4.50 inch section width on front and rear w/ 4.80 inch section width on sidecar.
VINTAGE SIDECAR OUTFITS (P2) are limited to outfits built before 1973 and outfits constructed after such date that are consistent in design and construction with outfits actually built in the period, subject to the following restrictions:
Engines: On or two cylinder four stroke, built before 1973 or like design. Maximum 750cc overhead valve or sidevalve only, Any period air cooled two stroke, single or twin cylinder, maximum 500cc. All engines in this class are restricted to stock valve sizes and stock (OEM) carbs except that aftermarket carbs of period design & stock carb venture diameter may be fitted.
Examples:
BMW Rensport, 4 speed/5 models, maximum 750cc
BSA 650
Ducati bevel drive 750
Honda twin 450cc and 500cc
Moto Guzzi 750
Norton Commando 750 (850 sleeved to 750cc).
Suzuki 500T with stock internals
(no TR 500 components or metal removal).
Triumph 650/750 (no short rod 750’s).
Yamaha XS650 (may use big bore kits) restrictions apply.
Any OHC single cylinder.
Wheels & Tire Size: Wheels are to be a minimum 15 inch diameter front and rear w/minimum 8 inch diameter on sidecar. Tires are to be a maximum 125mm/5.00 section width on front, rear & sidecar.
P3 SIDECARS are limited to outfits built up to and including 1982 and outfits constructed after such date that are consistent in design and construction of outfits built in the period.
For more information on the P3 class contact the VRRA in Canada.
Formula 1 & Formula 2 SIDECARS rules are those of the SRA-West following the guidelines of the FIM.