Custom Cassette - too good not to share
Like most of us, I've been looking for a cassette that would have no cadence gaps, be fast on the down hills and let me climb like goat....
Well, after looking over many options I realized they don't seem to make what I was wanting so I customized my own from 2 Ultegra cassettes. I took the 3 cog spider from an 11-28 and put it on the backside of a 12-23
11-28:
11,12,13,14,15,_,17,_,19,_,21,_,_,24,_,_,_,28
12-23:
12,13,14,15,16,17,18,19,_,21,_,23
Frankencogs:
12,13,14,15,16,17,18,_,_,21,_,_,24,_,_,_,28
Crank is a compact 50/34
Took it out for my first ride yesterday on a 4:30, 88 mile ride at IF = 0.80 fro the first 3:30 then 0.76 the last hour. Covered over 2900' of elevation. Part was flat, part rollers, several steep climbs and some fast descents. All went well. While I did give up a bit on the fast descents since I did not have the 11T cog but with less than 10 minutes at top downhill speeds it was not something I missed very much.
Having 7 consecutive gears was fantastic for accelerating on the flats and crests. Rollers were much easier shifting wise too. I plan to ride Quassy using this next week. And since I have a PowerTap and spare spline shaft, I will have a standard 11-28 I can swap to in less than a minute if I decide there is some drawback I have yet to discover but I don't expect that to happen.
Anyone else tinker with custom cassettes?
Comments
Back in the Day I used a FrankenCassette on my first tri bike for at least a couple races. It was a 650c Cervelo P3...and for some reason I put a 54/39 on it, the older solid disk 54 that looked like a pie plate. Anyway, I don't remember the mix I had, but I think I took the cluster off a 25-12 (so probably 25, 24, 23) and mixed it with the remaining gears from a 21-11.
I tworked well. No shifting issues, etc.