Questions tagged [clamp]

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votes
2answers
83 views

What to use on saddle clamp?

I'm purchasing a new seat-post as my saddle refused to stay at the same angle with my current one; it was a second hand bike (B'Twin Triban 500) with a single bolt clamp. I'm going to switch to a two ...
3
votes
1answer
139 views

Very confused about the seatpost clamp

I can't figure the seatpost clamp on my bicycle (maybe it's stuck?). I've had it for a few months, it's quite old. I hit a bump in the street and the force lowered the seat but now I can't figure out ...
5
votes
1answer
270 views

Cube stereo 150 race “do not clamp” warning

I have the following warning on my (carbon) CUBE stereo 150 race (2019) : Ultra thinwall tubeset DO NOT CLAMP Currently I clamp my bike like this, and make sure that there is nearly no force ...
4
votes
1answer
610 views

Suggestions for protecting jeans from saddle clamp bolt

I’ve got a bike whose seat post uses the traditional style saddle clamp. It works! The saddle is firmly attached to the bike. Hooray. However. This bike is sort of a “café racer” - I mainly pootle ...
3
votes
1answer
96 views

The best way to mount a rear rack

I've bought Bontrager Backrack light and I am thinking about different ways to mount it on my road bike. Some details: at the bottom the rack attaches to the quick release screw. the tubes ...
1
vote
2answers
286 views

Hose Clamp Salsa Watter Bottle Cage to Rigid Fork with No Sliding (Gravel)

Last year, I used some plastic clamps I bought from a LBS to mount two stainless steel Salsa water bottle cages to my rigid fork as shown in this picture: Unfortunately, the plastic clamps wouldn't ...
2
votes
0answers
218 views

upgrade traditional saddle clamp (not seat tube clamp)?

I'm currently restoring my folding bike and it has a large diameter (34 mm/1.34 in) seatpost that tapers to the standard 22 mm/0.87 in diameter at the end. The bike currently uses that traditional ...
3
votes
1answer
2k views

How to change the seat clamp on a dropper post?

While trying to tighten the screws on the seat clamp on my wife's bike, I overtightened one of the screws, damaging both the screw and the seat clamp. (I had used a torque wrench and had set it to the ...
3
votes
2answers
159 views

Brifter loose even with bolt tight

How to clamp a brifter to the bar more securely if the clamp is already very tight? More detail: After a small crash (no scratches on me, just a few on the bike), one Shimano Ultegra brifter was ...
1
vote
1answer
153 views

Shimano front-derailleur with 28.6 Clamp

For my new Shimano M780 based gear I need a pull down (or bottom pull) front derailleur with a 28.6mm clamp for a 3x10 without direct mount. All the derailleur I have checked do not have a 28.6mm ...
2
votes
1answer
790 views

Brake lever clamp too loose for handlebars

I'm trying to attach a new brake lever onto my handlebars, however, the clamp (circular part) of the brake lever that slides onto the handlebars is a bit too loose. I've tried to tighten it but ...
0
votes
3answers
236 views

Brake hanger causing seatpost slippage?

I have an aluminum seatpost in a steel seat tube and I have been noticing some slippage lately. The size of the seatpost and of the seat collar match perfectly the size of the frame. I inspected the ...
0
votes
2answers
2k views

Seatpost clamp sizing issues?

I have a carbon bike frame that has a seat post with diameter of 31.6mm and i got a clamp that said 34.9mm but it doesn't fit on the frame (too small). There is no manufacturer details outside of the ...
5
votes
3answers
6k views

Slipping aluminium seatpost in aluminium frame

I've already seen this question: Problems with a slipping seatpost The main difference is that I have an aluminium frameset and a forged alloy seatpost - lightweight clamp. After every couple ...
2
votes
1answer
333 views

Braze on or what sort of clamp on a Cinelli frame?

I'm seeing a ridiculously good local deal on a Cinelli Experience frame. I think I'll build it up with entry Campagnolo stuff (also seeing a deal). I am mildly confused about the front derailleur ...
1
vote
1answer
828 views

Does a carbon frame need two-bolt seat clamp?

Does a bike with an alloy seat post and a carbon frame need a seat post clamp with two bolts? Most clamps these days seem to be either quick release or single bolt. Is that safe to use with my set up? ...
8
votes
4answers
8k views

Which way should a seat post clamp be oriented?

I heard somewhere (I don't remember where) once that a seat post clamp should be oriented with the gap at the front of the seat tube, opposite of the gap in the top of the seat tube. The logic behind ...
2
votes
1answer
594 views

Seat clamp tolerance

Manufacturer specifies a seat clamp/collar size of 36.6mm. I was wondering if a 36.4mm clamp will work? How much tolerance is there with a seat clamp?
7
votes
3answers
3k views

Does anyone make a split seat clamp?

I built an 'Urban Mountain Bike' and I sometimes like to take it off drops. Accordingly, I cut the 'nub' that sticks up above the top tube so that the seat can be removed without a scary open pipe ...
1
vote
2answers
23k views

How do I install a bike seat clamp properly?

I recently moved, and had to take off the seat to my bike while I moved. I was surprised to find when I arrived and settled that I couldn't find the clamp to my bike seat. I managed to find a new bike ...