What size is my seat post?
07-05-10, 02:50 PM
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What size is my seat post?
I just bought an '09 Cannondale Comfort 5 and do not like the Post Moderne seat post. I'm not sure what the seat post diameter is. It appears to be a little over 1". Can someone help me?
Last edited by Neuclearfusion; 07-06-10 at 01:24 PM.
07-05-10, 03:36 PM
#2
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Take it out of the seat tube and read the size. I've never seen that wasn't engraved on the post.
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07-05-10, 03:42 PM
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Originally Posted by Nermal
Take it out of the seat tube and read the size. I've never seen that wasn't engraved on the post.
07-05-10, 04:00 PM
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Originally Posted by CCrew
And if for some reason it doesn't, take a measurement of it
You could stop by a bike shop and they'll measure it for you.
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07-05-10, 04:43 PM
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Originally Posted by RonH
In millimeters.
You could stop by a bike shop and they'll measure it for you.
You could stop by a bike shop and they'll measure it for you.
Last edited by Neuclearfusion; 07-05-10 at 04:46 PM.
07-05-10, 06:43 PM
#6
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Make sure you measure it in millimeters precisely, only size I've seen measured in inches is 7/8" or 22.2mm. Most newer bikes I've seen are 27.2, but there are sizes close enough you might not catch the difference if you don't measure it precisely, like 27.2 and 27.0.
07-06-10, 01:15 AM
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Originally Posted by Neuclearfusion
There are no bike shops in my hometown. It messures about 1-1/16".
1 1/16" comes out to 26.9875 mm. So you could be looking at a 26.8, a 27.0, or a 27.2, depending upon which side of "about" accuracy falls.
You're going to need to look at the imprint on the seatpost itself, look up your bike's specifications online, or find a vernier, dial, or digital caliper.
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07-06-10, 07:17 AM
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i am riding my dads schwinn collegiate this week. had short original seatpost. 13/16 with a 5/8 top. called shop to get longer post since i have a few seats and he wanted me to bring it in. not required. i measured it with caliper myself. got a new 15" post with 7/8" top. helps to go to a shop with lots of parts. think original post is 10"?
