Struggling to find a definitive answer here.
Want to use an 11 speed shifter, 11 speed rear mech, 10 speed cassette, 11 speed chain & rings together.
Cassette spacer will be fitted behind the largest cog.
Will this work? I know mixing 11 speed shifter with 10 speed mech isn't a good idea, but if both are 11 speed then pull ratio isn't affected.
If it does work, is there a nice way of locking out the unused shift? Limit screw on the large cog maybe?
11 speed freehub btw.
Will this work?
Not very well.
Depends how long you want it to work for and how picky you are about shift quality.
It’s not going to work properly because the cassette pitch (spacing between gears) is different so the 11sp shifter and mech combo won’t throw the chain far enough for each click. Even if you get it working acceptably to you it’s going to wear the chain much faster than expected and therefore damage your chainrings too
To be honest, I’d try and buy a 5800 cassette to finish the job.
Link for cassette pitch and activation ratios:
Different pitch between 10 and 11 speed sprockets, Shimano 10 speed = 3.95, Shimano 11 Speed = 3.74...
see table 1: https://en.wikibooks.org/wiki/Bicycles/Maintenance_and_Repair/Gear-changing_Dimensions
You could try installing an 11 speed cassette, omitting one sprocket (with a spacer of some sort behind the Cassette) and limiting the mech movement with the upper limit screw...
Or look for an 11 speed cassette that you can mod to fit a 10 speed FH body (assuming there's not going to be a spoke clash) a bit like like this:
You could try installing an 11 speed cassette, omitting one sprocket (with a spacer of some sort behind the Cassette) and limiting the mech movement with the upper limit screw…
The OP doesn't need to as already has an 11spd freehub body so can just use an 11spd cassette without modification.
Hmmm, feared this might be the case.
It's a youth gearing issue, have 10 speed youth (16up) cassettes, but now an 11 speed setup. Youth cassettes cost loads, so trying to use what we have.
What cassette is it?
Is it separate sprockets or clusters/spiders
If its individuals you could probably buy some 11s spacers and a couple of extra sprockets
https://thecycleclinic.co.uk/products/miche-11-speed-for-shimano-individual-cassette-sprockets
Then build your own. IIRC 10 and 11 speed sprockets are either the same thickness or 0,05 difference.
Should work well enough.
Failing that, sell it and buy a new one, if its got a bit of use left in it, it should sell for a reasonable price. Same with the one you'll have to buy......
Hm, see what you mean. I didn’t actually know about ‘youth’ cassettes not being a racer, but yep at around £50 and up a pop I can see why you’d prefer an alternative.
I think your only practical solutions outside of building cassettes are to give in and pay the race tax or go back to 10sp shifters. TBH, I’m not convinced cassette building is going to work out cheaper than readymades and selling your existing units especially if you account for time spent.
Hmm..i never knew about 'youth cassettes'.
Excuse my daftness, are they 'just', say, a 16-25 cassette??
Why is this? legal issues? Or that kids don't/cant use the range?
DrP
Looks like youth race rules. Quote from Totalcycling:
”
- The 16-27 cassette is suitable for schoolboy restricted gearing (age 14-16).”
(manual edit to fix broken forum formatting)
Cheers ghostly - this was an initial plan but doesn't really work out much cheaper. Tredz have actually got Miche blocks at a slightly less crazy than usual price, so it might be best to just bite the bullet rather than bodge it. This is why I don't like buying new bikes!
DrP - yeah, youths and juniors race on restricted gears for road and track. Develops better pedalling technique as they need to spin faster rather than simply mash a big gear, also levels the playing field a bit between different sized kids in the same age range. Upper limit on gear length.
Obvious heads up on Tredz if you aren’t aware already, while you will get what you’ve ordered it may take longer than advertised as they seem to operate a dropship model now and actually carry very little stock. Worth bearing in mind if the lack of a cassette is keeping your racer off the bike.
2tyred - cheers for that. That's DrP's learning done for today!
Now...where's my rum....?
DrP
Would a JTek Shiftmate be an economical solution? I think model 1 is what is needed