Indy Class is the open tall wheel class.
Chassis Specifications
Maximum tech width= 1.3125" (1-5/16")
Only Aurora or Model Motoring copper T-jet chassis
Chassis must remain stock without modifications
No venting, lightening or trimming allowed
Chassis gear plate rails maybe trimmed except under clip
No weight maybe added to chassis
No metal bearings allowed
Guide Pin maybe glued
Armature
Any stock Aurora T-jet or Model Motoring armature
Grey tip 2 lam is allowed.
Minimum ohm of 16
Armature can be balanced and trued
No Rewinds or De-winds allowed.
Electrical System
Stock copper chassis - no modifications
Brushes - flat copper open (maybe scored)
Any copper pickup shoe allowed, no ski shoes (maybe restricted)
Magnets
Original TJet Aurora magnets- Green/White, Green/Orange, Black/Black, Black/Black with White Stripe and OS3 "Red Dragon" only - no modifications.
Magnets may be shimmed with plastics or non-ferrous metal.
No killer bee magnets.
Gears
Aurora or Model Motoring Brass - stock or stock replacement
Beveled gears are not allowed
Gears may be polished/sanded
Shimming is allowed with plastic or non-ferrous material Stock Aurora crown gear or any other aftermarket crown gear for 9-tooth pinion.
9 tooth pinion only
Crown gear can be aftermarket no smaller than .300 inch
Axles
Any axle allowed
All wheels must be plastic
Double Flange Wheels are allowed
HO Reproductions, ZoominMotorsports, JW, RTHO,FLR, etc.
Truck axle hole will be used for front axle
Tires
Fronts can be any slip on tire Min .420 inch
Rears can be any slip on tire Min .460 inch
Tire width shall be no wider than .175 (AJ’s Width)
Tires may be made of silicone
Tires may be glued to the hubs
Bodies
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