C16r & 650b wheels and ecentric BB ~

[Elsubstar]

Hey folks, at the mo my Orange C16r is running 1x10, but I would like to turn it into a single speed using an eccentric bb and also if they fit some 650b wheels.

Firstly has anyone tried fitting 650s into the frame of a retro ("97) c16 and how did you get on? What tyre sizes could you run?

Secondly, could anyone recommend an eccentric bb to run with hollowtech cranks?

Thanks for any (constructive) input!

 

[jimplops]

An EBB is going to need a larger diameter BB shell, easy way would be a tensioner or an eno hub. To run 650b you're going to have to move the brake bosses to accommodate the bigger diameter wheel.

 

[danson67]

If you can bear to lose the Hollowtech BB and go for outboard, thePhil Wood Philcentric

Or the Trickstuff Exzentriker

Both pricey, but beautifully made. Maybe try the 650Bs with a tensioner first...

Generally speaking, your 650B wheels would have 12.5mm less top clearance (584mm-559mm/2=12.5mm).
Does your frame have 1/2" to spare?

All the best,

 

[Elsubstar]

To run 650b you're going to have to move the brake bosses to accommodate the bigger diameter wheel.

Sorry forgot to mention Ive had a disc mount and brace welded to the frame, a very neat job by Roberts cycles. You would never have thought its was retro fitted by looking at it. (Running BB7s with gores sealed cables) So the only issue should be tyre clearance. (i hope i don't get cast out for this sacrilege!) :shock: