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I am going to build a new bike, and I'd like to reuse my old bar end shifters if possible.

I prefer using them in friction mode.

Is it possible to use 9-speed Shimano bar end shifter on friction with:

  1. Shimano 10 speed derailleurs/cassette?
  2. Shimano 11 speed derailleurs/cassette?
  3. Campagnolo 10 speed derailleurs/cassette?

Any problems to expect/consider?

  • 3
    Should be fine - as long as it can pull enough cable total (very likely) – Criggie Feb 8 '17 at 22:09
  • Also, note that there are 10 speed Shimano compatible bar end shifters with front friction only and rear switchable between friction and index, made by Microshift (model bs-m10), and 11 speed as well (model bs-m11), though you have to use a Shimano mountain rear derailleur to get indexing to work out (which you might be changing the RD, depending on what derailleur and cassette combo you're using). – Batman Feb 9 '17 at 1:38
  • What about using Shimano 9 speed bar end shifters on friction with campy 10 speed derailleurs/cassette? If you put it in an answer I can accept it. – ryanjdillon Feb 11 '17 at 10:17
  • Campy has lower actuation ratio, so it is not sure if the Shimano lever pulls enough cable to cover 10 speed range. – ojs Feb 11 '17 at 11:26
  • You shouldn't have a problem with the Shimano ones, but shifting 11 speeds by friction will be finicky. – Batman Feb 11 '17 at 13:04
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Beyond the question of finickiness of actually using the system with higher cog counts, it's a matter of whether there's enough total cable pull from the shifter in friction mode to cover the range of movement needed given the cassette used and the actuation ratio of the derailer.

Here's an excellent article with the basic data you need to figure it out, snipped:

Data from Art's

More Data from Art's

The only other piece you'd need to know is the actual total cable pull of your SL-BS77 9-speed bar end shifters, which requires measuring since 9*2.5 doesn't work because it's got some phantom movement both before and after its normal range of clicks when in indexed mode. I have them on a bike so I undid the low limit, put it in friction, put a mark on the cable and came up with 24.5mm total movement.

So, the answers:

Shimano 10 with a 10-speed Shimano road RD works because 24.5*1.7=41.65 (the total amount of derailer movement you get) and 3.95*10=39.5 (the minimum total range you need, here a smaller number than the 41.65). Shimano 10 with a 10-speed mountain RD doesn't work because 24.5*1.2=29.4.

Shimano 11 with an 11-speed Shimano road RD doesn't work because 24.5*1.4=34.3 (derailer range movement), which is less than 11*3.9=42.9 (range needed). Shimano 11-speed mountain RDs have an even lower actuation ratio (1.1) so we know that won't work either. So in other words, all the 11-speed shifters pull quite a bit more cable, so this friction shifter and probably many others out there in the world can't really sub in for them, primarily because the actuation ratio the systems run on has been made quite a bit different than in the past, plus the cassette itself is a little wider. You could almost do it by just using an older derailer with the 1.7 ratio, but not quite (24.5*1.7=41.65, and we need 42.9). Hacking the cable anchor to tweak the ratio by that much is probably achievable.

Campy 10 with a 10-speed Campy RD won't work, because 24.5*1.4=36.75, and 4.15*10=41.5. But it will work, barely, with a Shimano RD with the 1.7 ratio.

  • Extremely informative! – ryanjdillon Feb 12 '17 at 13:34
  • The easiest solution to do 11 speed friction is just to buy the bar ends from Microshift (they sell 10/11 spd Shimano mountain cable pull ones that are index/friction). – Batman Feb 12 '17 at 19:35

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