Unanswered Questions
48 questions with no upvoted or accepted answers
0
votes
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256
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Is this Decathlon Cobra bike (frame) unique?
So last summer I got a job in a workshop, during which I had the opportunity to build my own road bike from a Decathlon frame. The model is apparently a Cobra Special (as shown on the pictures). For ...
- 438
1
vote
0
answers
569
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Shimano 105 r7000 front derailleur hard and clunky shifting, shifter harder to shift
A total newbie to DIY bike repair here, and my Shimano 105 r7000 FD is shifting really harshly after a wash. Washed it with dish soap plus water solution, however I did not give the FD any specific ...
- 4,536
3
votes
0
answers
86
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Just hoping someone out there recognizes this bike and can help identify it
Assuming this is a 90s era aluminum frame with only a head badge sticker to identify it, no name or model printed anywhere. RX100 RD, DeoreXT FD, Sugino triple crank and Exage500EX brakes. the fork is ...
- 31
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0
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276
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Please Identify this frame FAKE BMC?
hi! I bought this bike as a BMC ALR one ~2016 model year. later I've realised that it's not BMC. The frame does not have BMC features. and have some that BMC never had on its bikes like this:
Also, ...
- 5,202
-1
votes
1
answer
90
views
Chain jumps up and down when freewheeling and back cog moves back and forward on my new bike
The chain jumps up and down when freewheeling. The chain sometimes jumps off the front cog. The cause it seems comes from the back cog going backwards and forward continually when I am freewheeling.
CommunityBot
- 1
1
vote
0
answers
176
views
Golfer’s elbow (Inner elbow pain) from drop bars?
I’ve been cycling for 3-4 years on a flat bars without any pain in My joints . recently I switched to drop bars, My arms are slightly bent when I ride so My bike fit is ok But I’m having an inner ...
- 31
1
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0
answers
66
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I have a double walled bicycle wheel frame seam that has a gap underneath NOT on top? It does not go all the way round, only underneath. Is this fine?
I have a double walled bicycle wheel frame seam that has a gap underneath NOT on top? It does not go all the way round, only underneath. Is this fine?
The bicycle is a No Logo X-type racing alloy bike ...
9
votes
1
answer
950
views
Shimano Dura-Ace R9120 lever leaking
My bike's Dura-Ace R9120 rear-brake/front derailleur shifter (left shifter in UK) leaks brake fluid when I pull hard on the lever. It leaks from this specific place:
I understand this lever is ...
CommunityBot
- 1
0
votes
0
answers
172
views
Can I use 8s Claris R2000 Rear Derailleur on a 10 Speed Cogs (11-28t) and 10s drop-bar brifters/sti?
A 8s claris roadbike derailleur on 10s cogs and Sensah Phi 10s drop-bar shifter.
- 33.9k
0
votes
0
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179
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My shimano ultegra quick release is not working because the ball bearing inside got lost, can someone help me to identify the size of it?
Can someone help me because my ultegra caliper quick release system is not working because the ball bearing inside got lost (see picture below)
- 5,202
0
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0
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106
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Help identifying this old bike please
I've got an offer from a friend to get a bike of his that has been sitting in his attic for a few years now. He says the bike is roughly 25 years old, most probably bought in the Czech republic.
Any ...
2
votes
0
answers
118
views
Pirelli tires (mixing 700X23c and 70025c)
A bike shop (whom I trust) replaced my tires with new 700X25c Pirelli P Zero Zello 4S front and rear, the rear tire did not clear the fork/frame for some reason, they switched the rear 700X25c with ...
- 21
1
vote
0
answers
80
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Getting the correct road bike size, moving from MTB
Currently I have a Large Stumpjumper 2021 29er.
The size was advised by the shop I purchased it from. It was OK at first but I ended up having a bike fit to adjust a few things (slightly longer stem ...
- 5,202
2
votes
0
answers
302
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Why is my bar tape wearing out quicker on one side?
My bar tape has been wearing out on the left where my palm meets the bar with I ride on the hoods, but not on the right. I've noticed the same thing on the gloves I usually wear.
Is this cause by how ...
- 41
0
votes
0
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226
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Carbon fork crack?
I have aluminum bike with carbon fork, this is in the front of the carbon fork, it is in both sides of it?
It's a carbon crack or paint crack?
