SRAM what?

3bs

3bs

whereabouts unknown
So I run 53/34 up front SRAM force 22 wifli, with grifters, 11/34 cassette.
I can never seem to get the thing to shift perfect top to bottom.
@Robert Holler suggests I go back to 2x10. Okay.

So today I put the v on the stand, change cassette to 11/36 10 speed. I leave the 11 speed chain. Just for the heck of it, before I change the brifter I run it through the gears. Since I have an 11 speed brifter this should not work. But, it does. In fact other than adjusting the b spacing, it runs perfectly. WTF?
 
Osiris

Osiris

Zen MBB Master
3bs said:
So I run 53/34 up front SRAM force 22 wifli, with grifters, 11/34 cassette.
I can never seem to get the thing to shift perfect top to bottom.
@Robert Holler suggests I go back to 2x10. Okay.

So today I put the v on the stand, change cassette to 11/36 10 speed. I leave the 11 speed chain. Just for the heck of it, before I change the brifter I run it through the gears. Since I have an 11 speed brifter this should not work. But, it does. In fact other than adjusting the b spacing, it runs perfectly. WTF?
Click to expand...

Had the same thing happen with my M1 Lowracer. It's got a 10 speed cassette, but by the time I bought it (used), the standard had long changed to 11 speed and Shimano no longer sold a 10 speed Di2 derailleur. The tech at the shop said not to worry because he could get the 11 speed Di2 derailleur to work just fine on it. He was right. :cool:
 
jond

jond

Zen MBB Master
Whenever I’ve had niggles with ten or eleven speed it has mostly turned out to be cable related. Fraying inner cable mostly usually at the brifter end. I’m frightened to try the superior electronic sets lest we forget how much I have to love mechanical. Often I’ll put bikes on trainer 10 or 11 speed with one speed mismatched cassette and find the mix match cassette or brifter work with a little tweak. Besides anything over seven x two is wasted on my legs. Heck impossible to wear out seven speed chain....well nearly. ;)
 
Osiris

Osiris

Zen MBB Master
I had another talk with the techs at the shop about this on Friday. They confirmed that in "some" cases, they have gotten an 11 speed Shimano Di2 system to work with an older 10 speed bike, but it doesn't work perfectly. Because there's a tiny difference in the spacing of the gears on an 11 and 10 gear cassette, what they'll typically do is set up the Di2 derailleur so that it indexes properly in the center of the cassette, leaving a slight miss-match near the biggest and smallest cogs on the cassette where most riders spend very little time. That explains why, on my M1, I can hear a bit of gear grinding when shifting into the largest 28T gear, as if it doesn't want to go there. The shift never fails though, and since I only use the 28T gear to get going from a stop, I'm hardly ever in that gear anyway. One thing they do caution owners about is if they experience no problems running a newer 11 gear Di2 on an older 10 gear bike, do NOT update the Di2 software, as that has made the indexing problem much worse in many cases.
 
3bs

3bs

whereabouts unknown
i am just going with the @Don1 approach. hopefully will ride outside this weekend.
there is no logic in what is happening on my bike, so i will not seek it, and i will not be any worse off without it. if the day comes when 11 no longer equals 10, i have a rival 10 briefer sitting in the box...
 
3bs

3bs

whereabouts unknown
TMI! lol sounds like something not safely visualized for an old guy.


brifter would have been a better word choice.
 
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