BOXSTOCK 12/20 SPEC SHEET
Spec. Rev. Date:7/1/99
CLASS NAME: BOXSTOCK 12/20
GOVERNING BODY: CenCAL IMCA (Central California International Micro Car Association)
CLASS CONCEPT: Basic, low-cost competition class (novice, advanced and expert driver classes)
- GENERAL:
- 1) All components must be available from distributors or manufacturers "over-the-counter" a minimum of one month prior to use in a competition event.
- 2)Weight of complete race-ready car shall be 72 grams minimum at all times during race
MOTOR SPECIFICATIONS:
- *Set-Up:
- Any C-Can
- *Armature:
- Any .510" min, dia, GP-12/GP-20 (must be marked by manufacturer)
- *Magnets:
- Any single C-Can ceramic (No rare earth or Camen ProWire12 magnets allowed), shimming and honing is allowed
- *Bearings:
- Can & Endbell may use any oilite or bushing (no ball bearings allowed)
- *General:
- 1) Like components from different manufacturers may be exchanged
- 2) Motor may be ground to clear axle, no other modifications allowed
- 3) Shunts and spring insulation are not allowed
CHASSIS SPECIFICATIONS:
-
- *Type:
- Any "Boxstock" type chassis selling for less than $30 in assembled form
- *Bearings:
- Any bushing or oilite (No ball bearings allowed)
- *Front wheels/tires:
- Color black, .500" dia. minimum, mounted to chassis
- *Rear wheels/tires:
- Color black, .810" width maximum
- *Axles:
- Any type front allowed, rear must be solid steel (No lightweight drilled or filled axles), flats OK
- *Gears:
- Any size and pitch allowed but spur must remain above lower surface of chassis
- *Ground Clearence:
- .047" (3/64") front to rear
- *General:
- 1)SPUR GEAR MUST REMAIN ABOVE CHASSIS LOWER SURFACE!!!!
- 2)Brass/steel weight must be soldered solidly to nosepiece or removed only from built-in nosepiece weights of chassis, "stick-on" type lead may be added anywhere on chassis
- 3)Floating type rear body mounts may be utilized but must remain in original location
- 4) Lead wire clip may be added, no other mods allowed
BODY:
- *Type:
- Any "wing car" type body
- *Width:
- 3.25" (3 1/4") maximum (not including pins/clips)
- *Height:
- 2.5" (2 1/2") maximum at and behind rear axle, tapered to 2.0" high at a point 3.75" ahead of the rear axle, this taper shall continue to front of car (except for forward edge radius)
- *General:
- 1)Front wheel wells, windows, side dams & spoilers must be clear (small decals allowed)
- 2)Paint must be opaque (not "see-through")
- 3)Body must cover all of the chassis (including guide and tires) when viewed from above
- 4)Advanced and Expert classes must have interior with driver which covers all of chassis when viewed from above and must have 3 scale appearing numbers
- 5)Any cut-outs, holes or slots must be per molded-in detail on body
- 6)Diaplane length .500" (1/2")maximum. outside corner must be rounded
- 7)Side Dams must have front edges taped and outside corners must be rounded to prevent injuries