Chinese Carbon MTB > 29er
Mickes Dengfu M06 build
adbl:
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Only problem so far:
Creaking BB. Maybe it was a bad idea to put carbon paste before mounting the BB. I will get, or make, a bearing retainer to remove the BB92, wipe clean and re-install the bb again. (Or get a new one).
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I just had a similar issue on my bike. I swore up and down it was the bottom bracket so i changed it only to discover the creaking was still there. (not a big deal because i upgraded the BB and it made a huge difference in smoothness and efficiency)
I diagnosed it as the way the chain was coming off of the RaceFace narrow wide single crank gear. I run a KMC chain and it was feeling pretty stiff so i took the chain off, soaked it for a day in a cleaning solution, rinsed it off, installed and lubricated it and voila, creaking is gone!!! It's amazing where some sounds come from ???
Vipassana:
I chased what I thought was a creaking BB for weeks. I rebuilt it a half dozen times. I was CERTAIN in was the BB; all the signs were there. I was cursing BB30 right and left wondering if I made a mistake
It turns out it was actually the replaceable dropouts in the frame and the aluminum axle/hub in the aluminum drop outs. I greased in between the frame and dropouts and then between the hub and the dropouts and all was fixed. Silent.
If I clean the bike really well and put the rear wheel in without grease, the creak/groan will come back back.
MickeF:
--- Quote from: Vipassana on June 09, 2017, 05:10:34 PM ---I chased what I thought was a creaking BB for weeks. I rebuilt it a half dozen times. I was CERTAIN in was the BB; all the signs were there. I was cursing BB30 right and left wondering if I made a mistake
It turns out it was actually the replaceable dropouts in the frame and the aluminum axle/hub in the aluminum drop outs. I greased in between the frame and dropouts and then between the hub and the dropouts and all was fixed. Silent.
If I clean the bike really well and put the rear wheel in without grease, the creak/groan will come back back.
--- End quote ---
It seems it was the rear axel that wasn't tight enough!
I had a (small) crash and the handle on the rear axel took a hit (and so did my elbow and knee :) ) and got more tension / tighter.
Anyway, I think that may have solve the problem, because now: silent ;D
MickeF:
Update: The frame is still working just fine! No issues at all after just under 3500 km of riding in various conditions. Single tracks, steep climbing and descents.
Really like the geometry and balance.
No creaks or other issues. *knock on wood.
Pic from Åhus, Sweden
adbl:
--- Quote from: MickeF on July 05, 2017, 03:46:58 PM ---It seems it was the rear axel that wasn't tight enough!
I had a (small) crash and the handle on the rear axel took a hit (and so did my elbow and knee :) ) and got more tension / tighter.
Anyway, I think that may have solve the problem, because now: silent! ;D
--- End quote ---
I went to a DT Swiss RWS axle and it really stabilized the entire rear triangle of the bike! I can get the wheel mounting as tight as I need to and still remove the wheel on the trail if needed. Yes, it's a couple of grams heavier but well worth the weight!!!
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