PaulM
Guru
- Location
- Portsmouth, UK
Yes, chain-lines can be tricky on SWBs. Discs simplify matters but I've never really liked them - got BB7s on my Catrike and had them on my Metabikes. I do have a 26" disc wheel so I would just need a caliper but that means downgrading from my current Mavic rim with titanium XTR hub.
My problem is only when the RD is in its rearmost upper position, so a dual drive with a long cage derailleur and chain kept short would be ok. I actually have an SA CS-RF3 available to build into a rim.
Or go the full IGH route with a chain tensioner. Alfine 8 is gappy, Alfine 11 seems to have control cable issues, Rohloff is expensive, NuVinci is heavy and inefficient.
Hmmm, think it's disc brake or the CS-RF3. The disk brake is the more performance solution, the CS-RF3 is the utiltiy (change gear when stationary) option. If i was really after perfomance then a fixed unicrown fork with dropped return chain line would be the option - and this might work fine given that I can in effect adjust the head tube angle via the ride height adjustement to compensate for the lowered front end. So it would reduce weight, improve efficiency and lower the seat height (am struggling a little to mount and dismount currently) but I would lose the front suspension. The dual suspension is really lovely and provides some safety with all the potholes around.Choices, choices, choices .....
My problem is only when the RD is in its rearmost upper position, so a dual drive with a long cage derailleur and chain kept short would be ok. I actually have an SA CS-RF3 available to build into a rim.
Or go the full IGH route with a chain tensioner. Alfine 8 is gappy, Alfine 11 seems to have control cable issues, Rohloff is expensive, NuVinci is heavy and inefficient.
Hmmm, think it's disc brake or the CS-RF3. The disk brake is the more performance solution, the CS-RF3 is the utiltiy (change gear when stationary) option. If i was really after perfomance then a fixed unicrown fork with dropped return chain line would be the option - and this might work fine given that I can in effect adjust the head tube angle via the ride height adjustement to compensate for the lowered front end. So it would reduce weight, improve efficiency and lower the seat height (am struggling a little to mount and dismount currently) but I would lose the front suspension. The dual suspension is really lovely and provides some safety with all the potholes around.Choices, choices, choices .....