MacB
Lover of things that come in 3's
- Location
- Farnborough, Hampshire
XmisterIS said:MacB - can you fit an eccentric BB in a standard MTB or road frame? And how much play does the eccentricity give you? Logic would say that you only need one chain link's length - approx 1/2".
There is a product called the Eccentriker which is claimed to achieve this for any standard BB shell, but it costs about £120. At that price you're able to source another frame or droput replacements if you have a steel frame. I've read mixed reviews on EBB's, Thorn use them as do Van Nicholas in the Amazon. I think there's an eccentric hub option as well, but don't know much about that. On EBB's write ups indicate issues around level of refinement, slippage and the grub screw that is used to hold the BB position.
I'm not sure how much development will go into certain areas as I'm seeing more hub gear bikes with things like belt drives. I'd imagine the desired way forward is removing the chain stretch problem altogether. Then you could run any system on vertical dropouts, certainly seems to be a growing market for these innovationsin Europe. The big downside is that belt drives require the ability to open the frame.