Topic: 1 1/4 sprocket hub bolt pattern

[c2damofoj]

i bought a barely used 1 1/4 sprocket hub and sprocket off a cart racer for 20 bucks.  it has a 63tooth sprocket for #35 chain.  question is if i buy a 42-48 tooth #40 chain sprocket, will it bolt up to the hub i already have?  there are 6 allen bolts that hold sprocket to hub if it helps.  thanx

[Rooster]

It should be the same, yes

[jerb]

most sprocket hubs are 6 bolts with a 5 1/4'' pattern, measure from the center of the hub to the center of a bolt hole, if it mesures 2 5/8'' you have a common hub....

[birdman_express]

most sprocket hubs are 6 bolts with a 5 1/4'' pattern, measure from the center of the hub to the center of a bolt hole, if it mesures 2 5/8'' you have a common hub....

Don't forget the 4 9/16" register.

[jerb]

Don't forget the 4 9/16" register.

yea i was thinking there was another one, i believe EC uses that bolt pattern but could be wrong...

[birdman_express]

yea i was thinking there was another one, i believe EC uses that bolt pattern but could be wrong...

You are right on the bolt pattern, the register is the inner lip.

[jerb]