- Jul 2, 2016
It's obviously impossible for them to know the thickness of your sprocket unless it comes with a sprocket included.This is a majority of the email.
For use when attaching a DISC Drive Sprocket
and a DISC Brake Rotor.
3/8 offset (3/4 inch total thickness)
1/4 offset (5/8 inch total thickness)
1/8 offset (1/2 inch total thickness)
Chose your offset,
This means they use six of the nine holes in your sprocket. But are the holes in your sprocket 10mm diameter? You can open them up. It isn't a problem. But9 outer holes are 10mm diameter.
10mm doesn't seem right, those holes use a 6mm bolt that has a 10mm wrench head and the holes will take a quarter inch bolt as well which is what I usually upgrade the rag joint bolts to.This means they use six of the nine holes in your sprocket. But are the holes in your sprocket 10mm diameter? You can open them up. It isn't a problem. But
You might also want to ask them about the BCD. BCD is Bolt Circle Diameter. Are the nine holes in your sprocket centred on the correct diameter to line up with the 10mm holes in the top hat adapter?
Im not saying they are different but you might as well know for sure.
I'm sure they would prefer you buy a new sprocket from them too and they should have lots of tempting sizes to buy and experiment with! The prices for MB sprockets are generally speaking pretty cheap.
But you probably want to know beforehand if your kit sprocket is completely compatible, adaptable or not practically very compatible at all.
BCD is important. If holes are just slightly different BCD then drilling to open them out is just about impossible, and filing out the holes and opening them up a bit, accurately, might just be too much PITA for you. I'm sure it could be done, it's just whether you want to know that you have to!
They expect you to use the six 10mm hollow (looks like stainless steel or chromed cro-moly) bicycle chainring bolts provided with the adapter.10mm doesn't seem right, those holes use a 6mm bolt that has a 10mm wrench head and the holes will take a quarter inch bolt as well which is what I usually upgrade the rag joint bolts to.
If that adapter has 10mm holes what are they expecting you to use to bolt it down? And what sprocket do they want you to use lol..