Unanswered Questions
84 questions with no upvoted or accepted answers
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
6
votes
0
answers
483
views
Shimano road bike lever leaking mineral oil
I have a leak in my Shimano DA 9170 (right) shifter. When I do a bleed, everything seems to work for a ride or two and then I start to lose braking power and the underside of the brake hood is wet ...
CommunityBot
- 1
3
votes
0
answers
148
views
Help identifying brand of road bike frame
Last year I bought this second-hand bike, but I was a total newbie and didn't realize that the branding was just stickers until I received it.
It's still a good bike and I'm having fun with it, but I'...
- 131
3
votes
0
answers
115
views
What could the source of this ticking sound be?
I have an annoying ticking sound that I need some help with. I've read through a lot of suggestions online and two bike shops have failed to solve it.
The bike is a brand new custom build (Trek Emonda ...
- 6,437
3
votes
0
answers
86
views
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
2
votes
0
answers
55
views
GRX disc brake caliper confusion
Trying to sort a rubbing issue and keep reading things like "push BOTH pistons back in, squeeze lever to center pistonS" but it looks to me like there is only one piston? When I squeeze the ...
- 103
2
votes
0
answers
45
views
Installed new rim and hubs. Disc rotor is now rubbing against disc brake mount
The new hubs spacing seemed to be too small for the fork that it now rubs against the disc brake mount. In the picture, I can't even squeeze it in between the mounting point and the rotor.
Looking for ...
- 81
2
votes
0
answers
62
views
Why does my rotor not fit my mechanical disc brakes suddenly
I have a 2021 GT Aggressor with mechanical disc brakes. I bought this brand new from Dicks Sporting Goods so I know it's all original parts. I know that my rear rotor is bent and I purchased the rotor ...
- 1,277
2
votes
0
answers
40
views
Surface scratch on carbon steerer
Following my previous post, I managed to find an identical new fork replacement from a reseller since the communication with the company was absolutely terrible...
When I unpacked the fork though, I ...
- 153
2
votes
0
answers
94
views
Are wheels designed for a maximum disc/rotor size?
I'm looking at some new wheels which Shimano describe as "140 mm disc brake rotor compatible". Does this mean they can't handle larger 160mm rotors? If not, why would they make this point, ...
- 5,939
2
votes
0
answers
76
views
Identify this Bianchi - possibly 80s
Can someone please help me identify this Bianchi model?
My uncle has had it in storage for since years – I believe it's from the 80's.
Here are some photos, to help identify the model.
Cheers,
Alex
- 21
2
votes
0
answers
105
views
Identifying this road bike brand
Can someone help me identify this frame? It was given to me in Switzerland. My uncle and cousin bought it already painted grey. I noticed an engraved logo in the dropout, but it does not look like it ...
- 4,159
2
votes
0
answers
362
views
SRAM Guide R bleed problem
I'm bleeding my SRAM Guide R brakes. When working on the rear brake I noticed that the fluid can go from the lever syringe into the caliper syringe, but not the other way around. I can't move the ...
- 6,437
2
votes
0
answers
101
views
Can't seem to quiet my disc brakes
I recently purchased a bike that clearly needed fixing, for a great price. I've given the bike a bit of a tune-up, but one thing that won't seem to go away is the squealing sound coming from the disc ...
- 121
2
votes
0
answers
367
views
Shimano BR M8000 callipers leaking after bleed
A couple weeks ago I noticed that the brakes (BR-M8000) on this bike were quite spongy and since I didn't know when there last bled was, I decided to service them. Everything worked fine for about a ...
- 203