13
votes
Cracked Carbon Seat Tube
This is definitely a job for a carbon repair expert, not something you can fix at home with some epoxy and sand paper. It also looks like there is a crack propagating lengthwise through the top tube?
...
- 29.4k
8
votes
Accepted
Seatpost/saddle moving down when riding
Two possible remedies:
The easiest is to wipe off all of the grease and degrease with some solvent. Then instead of mounting the post with grease use carbon mounting paste. The gritty particles in ...
- 8,379
5
votes
How do I fix, repair, or replaace a bent seat post?
The safest option is to just replace the seatpost. They're not too expensive. You need to match the OD exactly, and get one at least as long as the old seatpost.
If your seatpost is steel, it is ...
- 131k
5
votes
Seatpost/saddle moving down when riding
Visually inspect the seatpost clamp, specifically the bolt and threads. If it is stretched or thinner at any point, discard and replace.
I've seen clamps that have been overtightened, where the bolt ...
- 131k
4
votes
Trimmed seatpost gets stuck without bottoming out
How far in it's going before it begins to get tight is a major piece of the puzzle here.
If it's not going in much past the seat cluster area, it's possible the seatpost is a size too big, but the top ...
- 88.2k
4
votes
Can a dropper post be added to a Giant bicycle with D-Fuse?
This site says the Revolt Advanced Pro 0 has a 30.9mm seatpost and can take a MTB dropper. Key thing is that the frame takes a standard round post and you can find a dropper of the correct diameter - ...
- 53.1k
4
votes
Accepted
Seat Tube Size?
According to this technical doc, page 13 - 30mmx350mm
Stinky Deluxe
Stem 10 deg. 50mm all sizes
Seatpost 30.0 x 350mm
Looks like Kona used 30.0 and 27.2 in those days, if its not 30.0mm it will ...
- 53.1k
3
votes
Chip in carbon seat tube?
Those small paint chips? Look harmless. You can also see a few minor surface voids inside the tube from the manufacturing process which should also be harmless.
- 29.4k
2
votes
Accepted
How to adapt a tube-mounted clamped accessory for a larger diameter tube?
Your options boil down to BUY something, MAKE/ADAPT something, or find a WORKAROUND.
Buying an item for this purpose is easiest, as long as you can identify a part that will do the job as required. ...
- 131k
2
votes
What is the meaning of multiple front derailleur clamp measurements?
In an effort to not have 16 models of front derailleurs for the same range of price-point bikes, most manufacturers have gone to a larger clamps and shims for the most common seat tube sizes.
- 2,805
2
votes
Cracked Carbon Seat Tube
Welcome to Bicycle Stack Exchange.
I successfully repaired the seat tube of a carbon fiber Specialized Stumpjumper that was actually flawed from the factory yet still made it into market. As I ...
- 11.3k
1
vote
Cracked Carbon Seat Tube
I would, like probably a lot of people, recommend finding someone who's competent in carbon repair. This might mean shipping the frame somewhere, and I understand that adds time and cost. That said, ...
- 36k
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