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Old 02-26-06, 07:58 PM   #1
zx108
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help quik!

a thomson post is at $25 on ebay and closes in 1 hour.

but i dont know the post diameter of my current seatpost. it is a crap kona post that came with the bike. anyone know how i can find the diameter?

some fast resposnses would be great!
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Old 02-26-06, 08:01 PM   #2
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Originally Posted by zx108
a thomson post is at $25 on ebay and closes in 1 hour.

but i dont know the post diameter of my current seatpost. it is a crap kona post that came with the bike. anyone know how i can find the diameter?

some fast resposnses would be great!
you should be able to measure across with a metric ruler and estimate to the 10th of a mm
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Old 02-26-06, 08:07 PM   #3
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it measured an inch across and that is 25 some mm and the post was 27 some mm

crap.
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Old 02-26-06, 08:14 PM   #4
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actually i just converted inches to to mm and it was the right size

i just missed out on a perfectly good thomson post for 25 bucks. arrrrrrg
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Old 02-26-06, 09:19 PM   #5
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Quote:
Originally Posted by zx108
a thomson post is at $25 on ebay and closes in 1 hour.

but i dont know the post diameter of my current seatpost. it is a crap kona post that came with the bike. anyone know how i can find the diameter?

some fast resposnses would be great!
This guy was parting out a 2005 Stumpy S-Works...there's still some stuff out there ending within the next couple of days...
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Old 02-26-06, 09:51 PM   #6
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actually i just converted inches to to mm and it was the right size

i just missed out on a perfectly good thomson post for 25 bucks. arrrrrrg
1 inch = 25.4mm

according to what you wrote above, you didn't miss out on anything. was your seat post 25.4 and the one he was selling 27 or not?
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Old 02-26-06, 09:55 PM   #7
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If it's the action I think it is, then it was a 30.9mm layback post.

Edit: It wasn't. This is the one I was thinking of. It's at $25 right now. This guy has a ton of stuff up for auction right now, but nothing I'm interested in.
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Old 02-26-06, 10:04 PM   #8
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Originally Posted by mx_599
1 inch = 25.4mm

according to what you wrote above, you didn't miss out on anything. was your seat post 25.4 and the one he was selling 27 or not?
i was all confused before. i was deciding to bid on the thomson and bidding on a stem at the same time. and i lost the stem in the last seconds

i used a calc. and it converted 1 inch to mm and it was 25 and i converted 27mm to inches and it was 1 inch. . . the one i wanted to buy was 27mm

thanks for the tip mtb, i am not looking for a setback though. there is one or two posts that have a day or so left, il see what they are doing tommorow
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Old 02-26-06, 10:09 PM   #9
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i used a calc. and it converted 1 inch to mm and it was 25 and i converted 27mm to inches and it was 1 inch. . . the one i wanted to buy was 27mm
27mm to an inch was a bad calculation. whatever you were using, try to find something more accurate. 1.6mm is very significant
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Old 02-26-06, 10:15 PM   #10
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The post diameter is usually stamped on it somewhere. Look carefully.

There's too much of a chance of making a measuring error unless you're using a caliper. A measuring tape just won't cut it.
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