ring and pinion

rrc · 2/12/10, 2:00 PM

Is there a way to tell without disassembly what size ring and pinion you may have in a sprint rear like 411,486,etc.?

Go Fast · 2/12/10, 5:12 PM

Take the rear cover off. Put a mark on the end of the pinion. Now put a mark on the axle. Turn the axle 1 round and count the revolutions of the pinion. If it turns just over 4 times it is a 4.11. If it is about 4 1/2 then it is a 4.56. Nearly 5 revolutions is a 4.86. That's about as simple a way that I know of.

2/12/10, 2:00 PM	#1 ring and pinion
rrc Member Join Date: Jul 2007 Posts: 237	Is there a way to tell without disassembly what size ring and pinion you may have in a sprint rear like 411,486,etc.?

2/12/10, 5:12 PM	#2 Re: ring and pinion
Go Fast Senior Member Race Count This Year: 3 Join Date: Jul 2007 Posts: 537	Take the rear cover off. Put a mark on the end of the pinion. Now put a mark on the axle. Turn the axle 1 round and count the revolutions of the pinion. If it turns just over 4 times it is a 4.11. If it is about 4 1/2 then it is a 4.56. Nearly 5 revolutions is a 4.86. That's about as simple a way that I know of.