LOA of seatpost? Frame make?
"I don't buy new frames, it just encourages them."
It's an old frame a friend has. I happen to like it alot, but it has a short ST. It has a perfect top tube length, but the seat tube is about 5 cm shorter than it should be.
EDIT: This is a picture of my frame fit, is that measurement to the top of the seatpost, or top of the saddle?
If it's saddle, that would knock it down to 7 1/2 inches of exposed seatpost
Last edited by OrgFarmCY; 01-24-07 at 06:30 PM.
If you can get the bars high enough and have a decent seatpost that was meant to extend that far you're fine.
Crappy math, I posted a picture of the bike fit I got at Providence bike.
it depends how much post is in the seat tube. if you've only got an inch in the seat tube, you risk ovalizing it or worse, ie having that mf wrench out of there while you're riding. there should be a line (i call it a guideline) on the seat post that says minimum insertion or something like that, but you can usually get away with raising it another inch or so. but if you're a real clydesdale or have a super slack seat tube angle, i woiuldn't risking funking around too much.Originally Posted by OrgFarmCY
riding a bike is NOT probable cause
As long as you have enough seat post in the frame I think it's totally fine. I see 350mm (~13.5 inches) seat posts on nashbar all the time. Assuming the minimum insertion mark is around 100mm, that gives you almost 10 inches to play around with. Run some mtb riser bars on it. Post pics.
my mtb has a salsa seatpost that sticks out about a foot.
I don't like it, but quite a few MTB manufacturers have gone to really short seat tubes lately, resulting in huge seat post requirements. People seem to be getting by just fine with them though.
Personally, I think this is just a ploy to minimize frame weight for the weight-concious crowd.
It looks to me like this style increases hub-to-crank stiffness but gives a softer ride for your butt. Not sure if it ends up heavier or lighter though...Originally Posted by JeffS
The rule of thumb is to have the post inserted below the intersection of the TT & the ST, minimum. Clear the TT and you should be fine.
i know plenty about 9 1/2 inches getting exposed, but none about this "minimum insertion". anyways, lets get back to bike talk.
we all know there's been a conspiracy.
only the failures have been recorded.
we all pay too much attention to Icarus,
and not enough to his father. -Peter Greenaway, The Falls
+1. 9 1/2 inches of anything is always good.Originally Posted by billypilgrim
Originally Posted by Dr Irwin Goldstein
<peter griffin> COUNT IT! </peter griffin>Originally Posted by billypilgrim
i don't wanna brag or nothing.. but my seatpost is ~13 in
(old centurion with easton ea 50 seatpost, no issues yet)