Problem: pedals rotate but the central axis does not
07-02-18, 02:18 PM
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Problem: pedals rotate but the central axis does not
Hello cycling masters,
About two years ago I installed CicloTek's "XFC PRO Central Motor KIT" (www.ciclotekstore.eu/b2c/producto/9822370/2/xfc-pro-e-bike-motor-kit-36v-without-battery) in my old Marlin bicycle.
Couple a weeks ago I noticed a problem that when I apply big force to the pedals (while cycling) sometimes pedals will rotate but the central axis does not. Pedals kind of slide rotate without chain movement. I eliminated the problem in cassette or chain so the problem is probably somewhere in the motor transmission. I detached the motor and opened it as much I dare. I didn't find any major detrition or broken parts.
What could be the problem? Maybe bearings or something...
And is this possible to fix, because I couldn't find any spare parts to this motor?
I attached some images, hope they help.
About two years ago I installed CicloTek's "XFC PRO Central Motor KIT" (www.ciclotekstore.eu/b2c/producto/9822370/2/xfc-pro-e-bike-motor-kit-36v-without-battery) in my old Marlin bicycle.
Couple a weeks ago I noticed a problem that when I apply big force to the pedals (while cycling) sometimes pedals will rotate but the central axis does not. Pedals kind of slide rotate without chain movement. I eliminated the problem in cassette or chain so the problem is probably somewhere in the motor transmission. I detached the motor and opened it as much I dare. I didn't find any major detrition or broken parts.
What could be the problem? Maybe bearings or something...
And is this possible to fix, because I couldn't find any spare parts to this motor?
I attached some images, hope they help.
07-25-18, 01:43 PM
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Nigel
Join Date: Mar 2011
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Your front freewheel is not working correctly.
Bottom image, on the left: that thing in the very center held on by five small bolts is a freewheel. Likely it just needs flushing with solvent (until the solvent runs clean and then some extra) then re-lubricated with light oil. Keep the oil flowing until you are sure that ALL of the solvent is out. If this does not work; you can rebuild or replace. There are almost 100 small parts inside - bearing balls and tiny springs. You need magnification to do that work.
This MIGHT be a replacement: Front Freewheel - Sick Bike Parts Note, you have to get that black thing out of yours, and verify that this is a replacement.
Bottom image, on the left: that thing in the very center held on by five small bolts is a freewheel. Likely it just needs flushing with solvent (until the solvent runs clean and then some extra) then re-lubricated with light oil. Keep the oil flowing until you are sure that ALL of the solvent is out. If this does not work; you can rebuild or replace. There are almost 100 small parts inside - bearing balls and tiny springs. You need magnification to do that work.
This MIGHT be a replacement: Front Freewheel - Sick Bike Parts Note, you have to get that black thing out of yours, and verify that this is a replacement.
