US Vintage Trans Am Class Rules and Specifications
(modified Sept. 14/2016)
Four Wheel Drive touring car chassis only
Any era or brand 4wd chassis is allowed.
Body provided deck lid spoilers allowed (not wings). Bodies that don't come with a deck lit spoiler may run a lexan spoiler that is 16mm max height and has a chord of 20mm. No additional skirts or raised/extended wings or air control surfaces allowed. Body must be trimmed at body trim lines. Full rear bumper required. It is highly preferred that bodies are detailed in race type livery in period-correct paint schemes. All cars are encouraged to have a number on the hood, both doors and trunklid. Wheel covers of any type are NOT allowed. Cockpit and Driver's are highly recommended, but not mantatory... Let's face it, with the min weight so high you'll likely be adding a lot of weight so it might as well be with a detailed cockpit/driver.
Tire & Wheel Specifications:
Tires allowed will be the Protoform VTA tires only. Part numbers will be posted as they become available. There will be a grace period up to Jan 1 / 2018 where HPI VTA tires/rims specified here will be allowed. The tires in question will be HPI tire part #4793 front and #4797 rear, using stock tire inserts provided with tire and any HPI Vintage wheels designed to fit these tires. Five or Eight spoke wheels available in various colors. 0mm offset front wheels and 6mm offset rear wheels are intended for 26mm width fronts and 31mm width rear tires. 8-spoke Vintage wheels from #3805 through #3814, 5-spoke Vintage wheels from #3815 through #3822 and Vintage stock car wheels from #3854 through #3860 are all legal wheels.
Grinding of tire tread is NOT permitted. Sanding of mold seam to remove seam is allowed. HPI Vintage Slicks are not allowed. No other altering, changing or softening of the tire is allowed beyond the permitted traction compound. No "double stuffing" of foam inserts allowed—only single stock vintage tire inserts are allowed.
25.5 brushless: Any ROAR Approved 25.5 brushless motor
Approved Brushles Motor List (all the way down at the bottom of the list)
Physical Motor timing advance is allowed.
Only stock 12.3 mm diameter rotors are allowed in this class.
No "Tuning Roters" permitted.There is no FDR (gear ratio) limit for this class.
No drilling, griding, or other physical modifications to motor can, endbell, stator, or rotor
External fans and external clip on heatsinks are allowed, but integral type heatsinks/fans including but not limited to those that require motor disassembly to mount are illegal.
Only approved ESC's are allowed. See the approved list below.
Absolutely NO "Boost" or "Turbo" is allowed.
Any ESC's used that have a "Boost" setting but be set to no boost. It is the driver's responsibility to prove that boost is turned off in these cases and cars may be checked at any time by event officials during the course of the event. If a driver is found to have boost set in the ESC then he/she will be disqualified from the event with no refund.
Approved ESC List
Any ROAR approved hard cased 2s, 7.4v nominal LiPo
6000 mAh Maximum
Batteries can be tested at any time by officials
Battery must not exceed a maximum of 8.44v.
Ride Height Specification:
Minimum ride height is 5mm.
Minimum 1450g in race-ready trim
IFMAR starts for all qualifiers and mains
5 minute qualifiers
8 minute mains
If it's not in the rules, and does not encompass the spirit of slower, controlled racing with realistic looking cars, consider it illegal. This is called the "Spirit of Competition" Rule. The class is based on slower, equal playing field competition with less traction, minimal aerodynamic aids and mostly older carpet racing technology. The final objective is close, fair, wheel-to-wheel racing for all. All decisions of the race promoter or track owner are final.
USVTA Approved Body List (updated April 27/2016)|
Bolink part numbers:
BL2262 '68 Chevrolet Camaro
BL2263 '65 Ford Mustang
HPI part numbers:
17510 - 1970 Plymouth AAR 'Cuda
7494 - 1968 Chevrolet Camaro
17531 - 1969 CHEVROLET CAMARO Z28
17508 - 1965 Ford Shelby GT-350
17519 - 1966 Ford Mustang GT
104926 - 1966 FORD MUSTANG GT COUPE BODY
17546 - 1970 Ford Mustang Boss 302 (small scale wing is ok for this body)
105106 - 1970 DODGE CHALLENGER BODY
Parma part numbers:
10143 - 1969 Z28 Camaro
10141 - 1970 Boss Mustang
10113 - 1970 'Cuda
Pegasus Hobbies part numbers:
PGH4001 - 1970 Camaro SS
PGH4002 - 1970 'Cuda
PGH4003 - 1970 Mustang
Protoform part numbers:
#1526 - J71
#1535-30 - 1971 Pontiac Firebird Trans Am
#1552-40 - 1971 Chevrolet Camaro Z28
#1558-40 - 1968 Ford Mustang
McAllister Racing part numbers:
#286- 1969 Mustang body
#295- 1970 Pontiac Firebird Trans Am 1/10, 200mm VTA body
#304– 1970 Chevrolet Camaro 1/10, 200mm VTA body
#305– 1968 Mercury Cougar 1/10, 200mm VTA body