27.2 seat post, will a 28.6 clamp work?
06-09-06, 07:16 PM
#1
These go to 11.
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27.2 seat post, will a 28.6 clamp work?
Hey guys, sorry for so simple a question. 
I have a 27.2 mm seat post with a QR clamp & want to get a bolt style clamp. I cannot find a 27.2 clamp anywhere. Am I looking for the wrong size clamp, are clamps supposed to be sized larger than the seat post? Should I just be looking for a 28.6 mm clamp which seems to be everywhere? Again, sorry for the simple question but I'm lost on this one.
Thanks all.
I have a 27.2 mm seat post with a QR clamp & want to get a bolt style clamp. I cannot find a 27.2 clamp anywhere. Am I looking for the wrong size clamp, are clamps supposed to be sized larger than the seat post? Should I just be looking for a 28.6 mm clamp which seems to be everywhere? Again, sorry for the simple question but I'm lost on this one.Thanks all.
06-09-06, 07:22 PM
#2
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I don't know the answer, but I'm going to guess.
the seatpost is 27.2 typical seat tube walls are .7 mm thick. seatpost diameter+ (seat tube thickness x 2) = 28.6
Like I said I don't know, but this seems a logical deduction.
the seatpost is 27.2 typical seat tube walls are .7 mm thick. seatpost diameter+ (seat tube thickness x 2) = 28.6
Like I said I don't know, but this seems a logical deduction.
06-09-06, 07:45 PM
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Originally Posted by DavidLee
Hey guys, sorry for so simple a question. I have a 27.2 mm seat post with a QR clamp & want to get a bolt style clamp. I cannot find a 27.2 clamp anywhere. Am I looking for the wrong size clamp, are clamps supposed to be sized larger than the seat post? Should I just be looking for a 28.6 mm clamp which seems to be everywhere? Again, sorry for the simple question but I'm lost on this one.
Thanks all.
I have a 27.2 mm seat post with a QR clamp & want to get a bolt style clamp. I cannot find a 27.2 clamp anywhere. Am I looking for the wrong size clamp, are clamps supposed to be sized larger than the seat post? Should I just be looking for a 28.6 mm clamp which seems to be everywhere? Again, sorry for the simple question but I'm lost on this one.Thanks all.
Wrap a piece of paper around your seat tube where the clamp goes. Mark where the paper overlaps. Measure that distance carefully with a millimeter ruler. Divide by 3.14. Buy that size clamp.
06-09-06, 08:18 PM
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I have two bikes that have 27.2 seatposts and they have different clamp sizes.
Only way to be sure is to measure it.
Only way to be sure is to measure it.
06-09-06, 09:10 PM
#5
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Go below. All you need really is a nut. Not a cashew!
https://www.nashbar.com/profile.cfm?c...eid=&pagename=
https://www.nashbar.com/profile.cfm?c...eid=&pagename=
06-10-06, 07:34 AM
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Originally Posted by TRUMPHENT
Go below. All you need really is a nut. Not a cashew!
https://www.nashbar.com/profile.cfm?c...eid=&pagename=
https://www.nashbar.com/profile.cfm?c...eid=&pagename=
06-10-06, 11:32 AM
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what frame are you using ? seat post size doesnt matter, its the external diameter of the seat tube you need to know.
if its a steal frame it will probably be a 28.6 clamp since steel tubes have thinner walls, if its an alloy frame it could be anything, reer to the manufacturers website.
if its a steal frame it will probably be a 28.6 clamp since steel tubes have thinner walls, if its an alloy frame it could be anything, reer to the manufacturers website.
