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Just in the process of rebuilding my bikepacking bike after being powder coated, Its a Pinnacle ramin 3 plus 2016, came with 10 speed deore 615 , decided to go 11 speed as everything needed replacing etc, got a 11 speed deore m5100 shifter and rear mech and a 11-50t sunshine cassette, all seemed ok set up wise. But I've noticed the chain line to the cassette is at quite an angle and when the chains on the 50T , it actually rubs the side of the tyre.
Looking at it the new cassette it seems further set into the wheel if that makes sense causing the acute chain line and the rubbing , after comparing old and new cassette, the old cassette is quite flat at the back comparing the outer ring and where it sits on the freehub, but the new cassette sits on a machined spider that holds the outer rings and they have a lot of machined offset or steps causing the outer rings to sit deeper into the wheel ??
are all big cassettes machined this way ?
Thought it would be an straight easy swap over , but no !
any advise please ?
Yep, it can be a thing. Only just got away with it when I went 2X9 to 1X11 on my On One fatty fat bike.
I never realised that was how the extra cogs were squeezed in. Assumed all cogs are thinner and closer to get into the same space.
Just curious, are you running a front mech or just 1x ?
james-rennie
Full Member
1x .. should be the same overall thickness !, thinner cogs and smaller gaps between cogs , I've always assumed ?
You might be able to move a spacer on the BB from one side of the bike to the other. A bit of a bodge and depends on frame/BB/cranks.
james-rennie
Full Member You might be able to move a spacer on the BB from one side of the bike to the other. A bit of a bodge and depends on frame/BB/cranks
Frame has a EBB , so did tap the BB over slightly, but no better really, still touches ! ... think the whole issue is the cassette .. most seem to come with machined spiders to keep the weight down etc, thats ok as long as they arent offset.
1x .. should be the same overall thickness !, thinner cogs and smaller gaps between cogs , I’ve always assumed ?
Nope.
11spd freehub body is 1.8mm longer than the 10spd one. Sunrace (not sunshine as in the OP 😉 ) do a funky cassette that allows you to fit an 11spd on to a 10spd body. The largest sprocket does get a bit closer to the spokes than when using a standard 10spd cassette on a 10spd body however. If you have more teeth on the new 11sp (say going from 42teeth 10spd to 50 teeth on the new 11spd) boring trigonometry makes the gap between chain and tyre even closer. It's all just marginal gains (or losses) but sometimes depending on frame design it can be enough to bork your bodge.
convert
Full Member
Nope.11spd freehub body is 1.8mm longer than the 10spd one.
Arh ! .. did not know that , hence the issue then ! .. thanks
do a funky cassette that allows you to fit an 11spd on to a 10spd body.
Nope.
All 11 speed MTB cassettes fit on a 10 speed freehub ('11sp freehub' is a road bike thing) The large cog overhangs a bit vs a 10 speed cassette making the whole thing wider, hence the OP's issue.
you can always try a 1mm spacer between the freehub and the cassette. Obviously it depends on how close the 11t sprocket currently is to the dropout, and you need to have enough space left to fit the 11t properly, but it can give you a small amount of outboard movement.
“ All 11 speed MTB cassettes fit on a 10 speed freehub (’11sp freehub’ is a road bike thing)”
They don’t, the XD driver came out specifically for 11 speed cassettes with a 10t smallest sprocket. Cheaper 11 speed cassettes came later, and many do fit on HG freehubs.
I can't see a 1 or 2.5mm spacer at either end fixing this, if the chain is touching the tyre, it's still going to touch when bouncing around.
However the chain ring/spider position can vary can't it? I'm sure I've read about different offsets for 1x and 2x chainrings, different offsets for boost etc, that may give you the required clearance.
Chainrings can vary, yes, so worth experimenting. Otherwise, go for a narrower rear tyre and/or rim.
“ All 11 speed MTB cassettes fit on a 10 speed freehub (’11sp freehub’ is a road bike thing)”
They don’t, the XD driver came out specifically for 11 speed cassettes with a 10t smallest sprocket. Cheaper 11 speed cassettes came later, and many do fit on HG freehubs.
XD is a sram thing. The top statement is true for shimano. The 11 speed mtb was possible due to the larger sprocket sitting nearer the spokes
OP are you components elegible for refund? Maybe go back to 10 speed. Maybe something like this
https://www.microshift.com/models/cs-h104-11-48t/
ampthill
Full Member
OP are you components elegible for refund? Maybe go back to 10 speed. Maybe something like this
Fitted them over a month ago and didn't notice it then !!, ordered direct from china, so would be a pain to return etc , have gone back to 10 speed for now , BUT the chainring thing could possible work as I've just had a look and the chainring runs on the inside of the crank spider arm and always has, so gonna move it to the outside and see how it lines up ?? ... could be enough ? .. cheers for all the reply's
By putting the ring on the outside you'll boost your chainline by 4+mm depending on chainring, that chainline would be bad normally but the new mechs place the jockey wheels further back so you might get way with that chainline.
Leftfield but are your chainstays straight? No way you could have bent them a bit?
Worth a check...
stevemuzzy
Free Member
Leftfield but are your chainstays straight? No way you could have bent them a bit?Worth a check…
Actually did think about this at the start , as the frames been off for a fresh powder coat ... it all seems and looks ok etc , wheel sits central etc
Moved chainring to outside crank spider which gave me a bit more of clearance, but shifting all to cock now! ... fresh cables etc, but shifting's all over the place, guessing chain line effecting it , as shifted lovely before !..... Looks like its going back to 10 speed and staying at 10 speed !