Unanswered Questions
80 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
5
votes
1
answer
396
views
Why does my crank go in reverse and my chain drop when I am not on the bike?
I have a problem of my chain dropping. What happens is when we stop and I unclip from the pedals, the crank rotates in reverse and the chain drops. I am in the large chain ring when this happens.
...
CommunityBot
- 1
3
votes
0
answers
57
views
How to connect quick link for 6/7/8 gears Shimano chain?
I recently ordered a new chain and I am having trouble connecting the quick link, which I also ordered (first time doing it). It seems the pin of the quick link won't stick out far enough to be able ...
- 31
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
3
votes
0
answers
141
views
New hub slipping when powering up?
I recently had my Giant Propel SLR serviced (including new chain, Cassette and a new Hub) as gears were beginning to slip. However after the service when I climb into top / hardest gear and put the ...
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
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
183
views
Bicycle chain roller diameter size chart?
I'm digging for a while now, and can not find any helpful chart for chain roller diameters e.g. Shimano 8,9,10,11,12 speed. It differs of course depending on the manufacturer and the purpose. We know ...
- 153
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
60
views
clicking chain on 3rd gear only
Shimano DI2 11 speed XTR on my gravel bike. The 3rd from smallest gear on the cassette makes a clicking sound. Any other gear its fine. Cassette and chain are fairly new. Have reindexed, checked ...
- 21
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
2
votes
0
answers
302
views
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
2
votes
0
answers
207
views
Slight crackling sensation apparently due to the chain sticking to the cassette teeth
I've just assembled my bike, so it has hardly been ridden (less than 200km) and all the components are new.
Everything works perfectly, except an unpleasant very slight crackling sensation when I ...
- 21
2
votes
0
answers
1k
views
Grinding noise from headset
I have a 5 year old Merida Ride 100, which has done about 5000km. It mostly has been in dry conditions, but has seen some wet conditions once in a while. After the last ride, I noticed some grinding ...
- 59
2
votes
0
answers
421
views
chain / cassette / chainrings replacement ratios - how often to you usually replace cassettes & chainrings per number of replaced chains?
I'm looking to get other riders experiences with how often cassettes and chainrings usually have to be replaced per the number of chain replacements. On my 2 road bikes I usually find roughly the ...
- 887
2
votes
0
answers
216
views
What type of frame could this be?
Recently purchased this 1x11 rebuild. Decals have been removed and it has a fresh powder coat. The stripes are coloured electrical tape so don't go by that... I've heard it could be a Miyata or ...
2
votes
0
answers
352
views
Where should I look for a reliable chainguide for a large chainring (52T)?
I'm building a hybrid bicycle using a Specialized StumpJumper S-Works carbon frameset.
The drive-train is 1x12.
Wolf Tooth 52T cyclocross chainring, to beef up the top end gearing.
(The chainring ...
- 121
2
votes
0
answers
126
views
Chain vs seatstay with a 50T Chainring - BMX frame
I plan to put a 50T chainring on my bmx but I am afraid to have an interference between the chain and the frame.
Does anybody know what is the critical distance between the seatstay and the chain so ...
- 21
2
votes
1
answer
98
views
Old bike: replaced rear axle but the tire goes off the axis when I get on it
I just broke and then replaced my rear axle on an old timey race bike I bought online.
Everything seems to go smoothly when the bike is up on a stand or on at my side, but once I get on it and try to ...
- 47
2
votes
1
answer
1k
views
Compatibility of Shimano Ultegra and Sora components
My road bike has an Ultegra groupset, but some parts need replacement (chainrings, chain, and cassette). The chain is worn out, the cassette is sliding with a new chain, and the chainset is also worn ...
CommunityBot
- 1
2
votes
1
answer
407
views
Is this a real Concorde or just a replica?
I'm confused with this, the lugs in this bike look identical with another Concorde but the tubing sticker clearly says "Reynolds". (Concorde only uses Colombus, right?)
1
vote
0
answers
26
views
Grinding noise from freewheel after changing the chain
I have Elops 100 city bike:
I changed the chain on it because it had not been changed in years. I used 1/2 x 1/8 inch chain:
I can pedal, but when I pedal there is a terrible noise when I apply ...
1
vote
0
answers
63
views
Searching for vintage piece
I'm trying to repair my vintage gazelle impala bike and I'm missing just one piece :( Does anyone know where I can find the piece seen in the photo? It's part of the brake cable anchor bolt.
Thank you!...
- 11
1
vote
0
answers
38
views
Compatibility Shimano rear derailleur RD-6300
I have this Shimano 600ax. Due to my stupidness I broke the body of the rear derailleur endings its life. There are other rear derailleurs (RD-6300) on ebay for example but these are very expensive ...
- 5,202
1
vote
0
answers
569
views
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
1
vote
0
answers
477
views
Adjusting road bike to Wahoo Kickr: is this chain noise from cross-chaining, or do I need to index the gears?
I've got an 8-speed Mérida road bike (that is, 2x8, 2 front, 8 rear) that I'm fitting to a 2020 (v5) Kickr that I just bought new. I am learning about some bike mechanic stuff that despite many years ...
- 1,061
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