Just converted bike over to 11 speed. Shifting is dialed in perfect. Everything brand new except crankset. When setting up the shifting and spinning the pedals by hand it feels “bumpy”. Is this to be expected with a brand new chain and cassette until it is worn in a little bit? I may have cut the chain a slight bit tight but it feels like this in pretty much all gears. Any ideas?
What speed was it before and how old the chainrings?
What speed was it before and how old the chainrings?
10 speed before. Praxis works chainrings with only 1600 miles on them.
sometimes when i’m drinking i mis route the chin through the cage in the back. Better check that. Your idea that it just needs to settle in a bit might be it too. Check the rear wheel straightness in the dropouts and fiddle with that b-screw see if that shuts it up
Don’t know then.
Just converted bike over to 11 speed. Shifting is dialed in perfect. Everything brand new except crankset. When setting up the shifting and spinning the pedals by hand it feels “bumpy”. Is this to be expected with a brand new chain and cassette until it is worn in a little bit? I may have cut the chain a slight bit tight but it feels like this in pretty much all gears. Any ideas?
Did you check to make sure it’s not a tight chain pin or tight missing link? Spin the crank backwards and observe the pin/missing link as it makes contact with the cassette. Should be smooth just like every other link. If bumpy, remove, lubricate and reinstall.
Just converted bike over to 11 speed. Shifting is dialed in perfect. Everything brand new except crankset. When setting up the shifting and spinning the pedals by hand it feels “bumpy”. Is this to be expected with a brand new chain and cassette until it is worn in a little bit? I may have cut the chain a slight bit tight but it feels like this in pretty much all gears. Any ideas?
Did you check to make sure it’s not a tight chain pin or tight missing link? Spin the crank backwards and observe the pin/missing link as it makes contact with the cassette. Should be smooth just like every other link. If bumpy, remove, lubricate and reinstall.
I did check this. It’s bumpy throughout the entire stroke.
sometimes when i’m drinking i misroute the chin through the cage in the back. Better check that.
Hehe. Yep. I did that one even not drinking.
Make sure the chain runs in an S and doesn’t run over the derailleur cage crossbar (or whatever it’s proper name is).
sometimes when i’m drinking i misroute the chin through the cage in the back. Better check that.
Hehe. Yep. I did that one even not drinking.
Make sure the chain runs in an S and doesn’t run over the derailleur cage crossbar (or whatever it’s proper name is).
you can actually ride around with the bike in that state. Not that I’d know.
it is the correct chain? Some chains have a correct side, I’m not sure which ones. Check the directions just in case.
it is the correct chain? Some chains have a correct side, I’m not sure which ones. Check the directions just in case.
Shimano chains are directional. KMC chains aren’t.
I thought the 11 speed Shimano chains did away with the directional design?
As per other comments check the read derailleur. Even if it is routed properly, if the chain is too short some derailleurs will catch when on the larger cogs.
I thought the 11 speed Shimano chains did away with the directional design?
You’re right. I stand corrected.
Could a bottom bracket bearing issue make pedaling feel bumpy?
I had a small issue with my crank. When I spun it without the chain it clicked each time around. I thought the bearings might be shot but the fix was as easy as tightening the crank arm bolt with a huge allen wrench. When you spin the crank without a chain is it super, super smooth? Because it should be. If it’s not that could it be rubbing on the front derailleur? Try trimming the FD with your left shifter maybe. Those two tests could eliminate the BB as well as FD rub.
Is the B screw adjusted properly? If not the upper pulley may bump against the cogs in certain gear combos.
I had a small issue with my crank. When I spun it without the chain it clicked each time around. I thought the bearings might be shot but the fix was as easy as tightening the crank arm bolt with a huge allen wrench. When you spin the crank without a chain is it super, super smooth? Because it should be. If it’s not that could it be rubbing on the front derailleur? Try trimming the FD with your left shifter maybe. Those two tests could eliminate the BB as well as FD rub.
Is the B screw adjusted properly? If not the upper pulley may bump against the cogs in certain gear combos.
I pulled the chain off the chainrings and spun the crank and it felt very smooth.
Although turning the B screw doesn’t visually appear to do much, I can confirm that the top pulley appears to clear the cassette cogs in all gear combinations.
I will say that the vibration / bumpiness feels worse the harder gear you are in. It’s pretty much there all around, but worst the harder gear you get in.
Any other ideas?
Dang. The last thing I can think of is to just slowly spin the crank and shine all the moving parts with a flashlight to try and see where the friction is coming from. Make sure the chainline is straight and you’re not cross chained. After that it might be time to have your LBS look at it.
Could the wear pattern of a 10sp chain on a chainring cause an issue like this one when moving to an 11sp chain? The existing chainrings have about 1600 miles on them all run as 10sp.