5 replies to this topic

[AB75]

Two part question of a car I good in a lot of misc. stuff.

 

1) Can anyone ID the chassis?

 

2) Theres no tag on the arm. How can I tell what motor it is? Its engraved with EDM .510 and 84.5.

 

Thanks!

 

 

 

[old & gray]

Best guesses from the peanut gallery:

 

RJR Boxstock/Group 12 chassis (Combo steel and wire; integral guide tongue, attached front weights, vintage late 1990s)

 

Armature .510" diameter. 18 turns of 24-1/2 gauge wire (use a small pinion).

[slotcarone]

Yes, as Bob said, an RJR chassis. Early '90s. We raced them in Gp 20 with the weights cut off at Fishkill Raceway.

[Bill from NH]

With that wind and no tag, both are indications that's an open class arm.

[Bill Seitz]

Today it's unusual to see an "open" wind on a .510" diameter, "long" arm for a C-can. That's probably a drag racing arm.

 

I don't know what size pinion is on it, but I think you might want a 6t or 7t in 64p gears. I have a '90s vintage 18t25 arm in a cobalt setup that's still incredibly fast on 6/39 gears.

[Bill from NH]

Bill, I think that's an old ar in that motor. .510" dia. was a popular dia. in the 70s, 80s, & maybe 90s. The Proslot/Champion can might be quite old too.