Hi, done 40 miles total on new bike and the crank bearings have failed.Removed bracket and found a third of the bearings where missing, must have been done during manufacture as there is nowhere the bearings can escape externally.Have let Leon Cycles know but not holding out much hope for a reply. Although the bike uses shimano gearing the bottom Bracket is made by NECO. Have ordered a Shimano replacement.
NCM Moscow Bottom Bracket Bearing Failure
- Thread starter RJC
- Start date
Hi, there is a Cadence sensor on the lefthand crank, this is used to sense when you start to pedal. Once you have removed the crank arm you can carefully use a couple of screwdrivers and gently lever from behind to remove it. . You dont need to remove the electrical conector, just leave the sensor hanging. When fitting back onto the Shimano BB it was a bit tighter to fit back on. I used a socket and gently tapped on with a hammer. Make sure you clean the threads on the frame once you have removed the old BB, then put new grease on them.
What was wrong with the Bottom Bracket ?
What was wrong with the Bottom Bracket ?
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Did they not send a new Bottom Bracket also ? The Bottom Bracket is a square tapered design. When you put the crank pedal arm on, it may not push on all the way to start with. As you do the bolt up it will push the arm onto it tightly. Torque setting for bolt in owners manual, try not to over tighten.
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If the bearings feel ok and the bracket spindle doesn't look worn I suspect the crank bolts werent fully tightened from new. Hopefully the crank arms were worn only, unless the threads in the spindle ends are damaged as well.
I got a quote from a local bike shop to fit the new BB and also supplied Leon Cycles with the cost of the new part They agreed to pay for it under warranty. They refunded my Paypal Account. Put it all in an E-mail to them and they should sort it for you.
I also re-checked everything else was tight on the bike.
I got a quote from a local bike shop to fit the new BB and also supplied Leon Cycles with the cost of the new part They agreed to pay for it under warranty. They refunded my Paypal Account. Put it all in an E-mail to them and they should sort it for you.
I also re-checked everything else was tight on the bike.
Hi,
Hi,
I've got a creaky/cranky noise coming from the cranks. The bike had only done a few hundred miles.
I am going to swap the pedals to make sure it's not a pedal bearing and then contact ncm. Im in UK so will contact ncm germany, did you email Germany and if so do you have any he email or telephone number.
ThanksTony
Hi,
I've got a creaky/cranky noise coming from the cranks. The bike had only done a few hundred miles.
I am going to swap the pedals to make sure it's not a pedal bearing and then contact ncm. Im in UK so will contact ncm germany, did you email Germany and if so do you have any he email or telephone number.
ThanksTony
If you have to change the Bottom Bracket this is the one I used. Shimano BB-UN26 Bottom Bracket - Black, 68-122 mm from Amazon. Fitted ok and a better make than original part. I sent them an invoice for parts and labor which a local bike shop quoted and they refunded me thru Paypal. You could also fit the part yourself If you have the tools to save time.
You should get a reply between 5-7 days hopefully...........
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