So I ordered a Coker Big One unicycle, and plan on using it mostly for road use. I can see myself wishing to do more with it in the future, and as I have bent many square tapers in the past I want to know my options for upgrading to an ISIS hub in the future.
Has anyone here upgraded a Coker to ISIS hub? I know the rim that comes with it is 48h so that limits hub options. If I were to get a 36h rim and an ISIS hub, would that wheel build work on the Big One frame?
So you want a new hub and cranks - Isis is indeed stronger
A new rim, so it’s 36 hole
Probably need new spokes as may not match length
I think you should just buy a new uni.
Seriously the wheel set is the biggest and most expensive part of a uni and you’re replacing every bit
Sell your Coker or keep it as a backup. And buy new. Won’t cost much more
Those new 36 oracles look sweet!
Well I bought the Coker because it was half the price of a Nimbus or KH. I was just wondering my options for upgrading if I wanted to do so in the future. And like I said, I plan on using it for the road mostly, I guess if I want to do any crazy stuff I can stick to my 29er :D.
Thanks for the feedback!
Decent square taper cranks are plenty strong when properly installed. On a road uni you won’t be as abusive. Secondly, you will most likely be running shorter cranks with less leverage. A lot of strong riders have been happy with ST cranks on cokers.
As an aside, the nimbus extra wide Isis hub is supposed to be incompatible with the big one frame. Apparently the flanges are set just a little wider and the spokes hit the frame.
But I think UDC can do some frame bending to make the Coker frame work with the isis (at least they used to).
Maybe with the old steel big one, but you don’t want to cold work aluminum.
I built my 36er using a Coker wheel and KH frame. Swapping the Coker hub to a 100mm 48h Nimbus ISIS hub was straightforward and I reused the spokes from the Coker wheel without issue.
Yes the Coker hub works in a nimbus/kh frame, but not the other way around.
Very interesting. This could be useful for me in the future. What year was the Coker purchased? I’m guessing the current models would work fine.
I didn’t buy a full unicycle, just the wheel. Coker has since stopped selling the wheel alone but yes, it is the same as the current model.
It was 2010 though I didn’t buy a full unicycle, just the wheel. Coker has since stopped selling the wheel alone but yes, it is the same as the current model.
Just to be clear, I never used the Coker hub. I replaced it with a Nimbus 48h ISIS hub and put the wheel in a KH frame.
It was 2010 though I didn’t buy a full unicycle, just the wheel. Coker has since stopped selling the wheel alone but yes, it is the same as the current model.
I was following you, but I wanted to make sure that the OP understood that you didn’t put an Isis hub on a big one.