I have stripped the threads on my seatpost clamp and went to an lbs to find a new one (seatpost = 27.2). The clamp sold to me wouldn't fit around the seatpost due to the machined ridge at the top that prevents sliding down the seat tube. I probably could have gotten it on the seat tube (the clamp was slightly out of round and would have required some wanking) but I couldn't have gotten the seatpost in it.
The frame is columbus foco and seems very thin at the clamp area. Does anyone know what size clamp would be appropriate (if the tubing were 0.4 mm at that point, I would suspect a ~28.0 mm clamp would be appropriate).
The ridge on the old clamp appears to have been ground off. Maybe do that with the clamp that will fit the seattube?
"D'ohBoy" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
Greetings!
I have stripped the threads on my seatpost clamp and went to an lbs to find a new one (seatpost = 27.2). The clamp sold to me wouldn't fit around the seatpost due to the machined ridge at the top that prevents sliding down the seat tube. I probably could have gotten it on the seat tube (the clamp was slightly out of round and would have required some wanking) but I couldn't have gotten the seatpost in it.
File it.
And don't worry if alarmists tell you this will cause fatigue failure from the scratches the file leaves...
I have stripped the threads on my seatpost clamp and went to an lbs to find a new one (seatpost = 27.2). The clamp sold to me wouldn't fit around the seatpost due to the machined ridge at the top that prevents sliding down the seat tube. I probably could have gotten it on the seat tube (the clamp was slightly out of round and would have required some wanking) but I couldn't have gotten the seatpost in it.
The frame is columbus foco and seems very thin at the clamp area. Does anyone know what size clamp would be appropriate (if the tubing were 0.4 mm at that point, I would suspect a ~28.0 mm clamp would be appropriate).
The ridge on the old clamp appears to have been ground off. Maybe do that with the clamp that will fit the seattube?
TIA and Happy Thanksgiving!
App
I assume you mean your frame has the external seattube clamp like the ones pictured in the link below.
They only come in three sizes. 1 1/8, 1 1/4, 1 3/8. Or the metric equivalent of 28.6, 31.8, 34.9. Get out your vernier calipers and put them at the top of the seattube and determine the outside diameter of the top of the seattube. These clamps have a ridge on the inside, a lip, to prevent the clamp from sliding down the seattube. The lip will be on top of the seattube.
Yah, I could do that and did think of it but I would rather not have to do that if possible. Settled on a Salsa LipLock with a barrel nut and that will accommodate my odd OD without damaging the threads of the clamp via the oblique bolt angle relative to the threads.
