I have a weird shifting problem that maybe the Slowtwitch braintrust can help me solve. I rode my tt bike on the trainer this winter with a Mavic wheel and 11 speed shimano 105 11-28 cassette. I have di2 set for full synchro and it shifts perfectly with the training wheel on the trainer.
Today I took it off of the trainer to ride outside and put my Zipp 404’s on with a SRAM red 11-28 cassette. The RD will shift to the 28 no problem but it will not drop all the way to the 11 on this wheel. No biggie could be spacing diff between the Mavic hub and Zipp hub.
But before I made any RD adjustments I tried the same SRAM red cassette on my Zipp Super nine disc. On that wheel it will drop to the 11 with no problem but will not shift up to the 28.
It would seem to me that the 11 speed hubs on the Zipps should be same spacing and the same cassette should act the same? I can understand the Mavic hub spacing being different from Zipp, and also possible spacing issues between the shimano cassette vs SRAM.
But for the life of me I don’t get why the Zipp wheels with same cassette are on the opposite end of shifting range from each other? Before I start adjusting the RD for one wheel and have it throw off the other even further, what am I missing here?
Today I took it off of the trainer to ride outside and put my Zipp 404’s on with a SRAM red 11-28 cassette. The RD will shift to the 28 no problem but it will not drop all the way to the 11 on this wheel. No biggie could be spacing diff between the Mavic hub and Zipp hub.
But before I made any RD adjustments I tried the same SRAM red cassette on my Zipp Super nine disc. On that wheel it will drop to the 11 with no problem but will not shift up to the 28.
It would seem to me that the 11 speed hubs on the Zipps should be same spacing and the same cassette should act the same? I can understand the Mavic hub spacing being different from Zipp, and also possible spacing issues between the shimano cassette vs SRAM.
But for the life of me I don’t get why the Zipp wheels with same cassette are on the opposite end of shifting range from each other? Before I start adjusting the RD for one wheel and have it throw off the other even further, what am I missing here?