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Old 05-15-06, 06:40 PM   #1
kunsei83
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Too much seatpost exposed?

Hi,

I just bought my first mountain bike! I bought a '05 Cannondale F300 on sale at a LBS. I decided to just buy a low-end mountain bike since I don't really care if the bike is heavy and i don't care if the gear skips a little. Gears can skip a lot in high-end components too as I've experienced it with my all dura-ace road bike. Anyways, I didn't see a need for an expensive bike and I would look like a tool having a nice mountain bike and i'm just a beginner.

I'm 5'9" and I have a 30 inch inseam so I bought a size medium. I guess from my road biking background, I prefer to have my seat pretty high since I feel more comfortable with it. I feel like too much of my seatpost is exposed as I think about 2/3 to 3/4 of the seatpost is exposed. It seems like that is too much. There is not a max. point marked on the seatpost so I don't know if it's too much. Do you think there's a good chance it'll snap? I might take it over to the bikeshop when I have this week to ask them about it, but any input from you guys will help.

thanks
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Old 05-15-06, 06:44 PM   #2
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If you don't see a mark, lower it a little bit.
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Old 05-15-06, 06:50 PM   #3
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It should have a mark. I wouldn't worry about the seatpost (very cheap part) snapping, i would worry about the frame. You should have at least 2-3" inside the frame. Take it back to the lbs.
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Old 05-15-06, 06:55 PM   #4
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there is a minimum mark on the seatpost you want to keep it a little lower than that. if it is above that mark then you need a longer post.
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Old 05-15-06, 07:01 PM   #5
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if youre dura ace equipped bike skips gears a lot, i think you may need to take it to an lbs
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Old 05-15-06, 08:48 PM   #6
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If you are as tall/short as you say you are, then you are on the right frame. I am 6'1"-6'2" and I ride a size large frame. My inseam is in the Nei'hood of 34".

It sounds like you have plenty of post left. Make sure and measure where it's comfortable to you (mark it) and take it out and measure the length of post below the mark. You really should have about 3"+ in there. If not, go get a longer one. They make longer seatposts.
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Old 05-15-06, 10:53 PM   #7
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if youre dura ace equipped bike skips gears a lot, i think you may need to take it to an lbs
I agree.

As for the seatpost... Do you know what brand it is? If so, contact the manufacturer (or check their web site, though this probably won't work with most OEM stuff). They should be able to tell you what the recommended insertion is.
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Old 05-15-06, 11:43 PM   #8
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Medium sounds right.

As mentioned, minimum 2-1/2 to 3 inches minimum insertion and all is well.

Also, since you are a roadie, you probably set your seat so your leg is straight but not locked out. That's too high for your mtn bike. Lower it about an inch or more. The more technical your terrain the lower your seat.
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Old 05-16-06, 08:38 AM   #9
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It's "yahoo".
Don't worry about what i ride.
so you don't even have a bike?
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Old 05-16-06, 09:06 AM   #10
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If you are in doubt you could always purchase a longer seatpost. If you have a long enough (quality) seatpost and you have it inserted past the minimum amount you should be fine.

Do you have more seatpost showing than I do?

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Old 05-16-06, 09:17 AM   #11
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Originally Posted by LowCel
If you are in doubt you could always purchase a longer seatpost. If you have a long enough (quality) seatpost and you have it inserted past the minimum amount you should be fine.

Do you have more seatpost showing than I do?

Bah! Just another excuse to wave that Ellsworth in my face. Damn you, LowCel. Damn you.
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Old 05-16-06, 09:22 AM   #12
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Bah! Just another excuse to wave that Ellsworth in my face. Damn you, LowCel. Damn you.
Oops....sorry! Maybe I should have put a picture of my other one, just as much seatpost exposed on that one.
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Old 05-16-06, 10:15 AM   #13
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Maybe I should have put a picture of my other one,
do itttttt!!
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Old 05-16-06, 11:12 AM   #14
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do itttttt!!
If you insist, here it is. Happy?!?!

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Old 05-16-06, 12:27 PM   #15
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All good advice above; sounds like you're fine, but the two things (in fact) that matter are (1) seat post not so extended that 'min insertion' mark shows (to prevent the seatpost snapping) AND (2) that when in place the bottom of the post is below the bottom of the top tube, where it intersects the seat tube (to prevent the FRAME snapping/cracking at that joint!). As said above, it's easy to check all this; if you've any doubt, buy a longer post; but it's not at all uncommon with mtb to have 8, 9, even 10" of post exposed.
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Old 05-16-06, 02:15 PM   #16
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Quote:
Originally Posted by LowCel
If you are in doubt you could always purchase a longer seatpost. If you have a long enough (quality) seatpost and you have it inserted past the minimum amount you should be fine.

Do you have more seatpost showing than I do?

Nearly- but then I'm a shortie at 5'6"

Bar stem set up for XC but reverse it for racing.
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Old 05-16-06, 03:02 PM   #17
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i prefer to have the seat all the way down.. make a poll.
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Old 05-16-06, 03:13 PM   #18
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i prefer to have the seat all the way down.. make a poll.
Ughh, either your bike is to big for you or you don't want to have any use of your knee's by the time you are thirty. Honestly, if you don't have any idea what you are talking about please keep your opinion to yourself. I would hate for someone to come here and mistakingly think that you knew what you were talking about and end up blowing out a knee a few months later.

For downhill, dirtjump, freeride it is fine to have the seat all the way down. Efficiency is not a big concern in those disciplines. For cross country riding which involves climbing it would be pure torture.
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Old 05-16-06, 03:15 PM   #19
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Hey i said what I thought. i never told anyone to do anything, and i dont regret it.
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Old 05-16-06, 03:18 PM   #20
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Hey i said what I thought. i never told anyone to do anything, and i dont regret it.
Please wait to give advice once you actually have a bike. Then maybe you will have some experience to back it up.
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Old 05-16-06, 03:23 PM   #21
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WHat you think i havent had a bike previously in my life, well if you thought that, im sorry, but your an idiot.
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Old 05-16-06, 03:25 PM   #22
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WHat you think i havent had a bike previously in my life, well if you thought that, im sorry, but your an idiot.
Easy there junior, I was just going by the amount of cycling knowledge you have displayed in all of your previous posts.
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Old 05-16-06, 03:40 PM   #23
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ok but just a heads up. dont put that seat to high or it might end up your arse.might be a little too late for some people...OH HELL HAha..im just keeding.
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Old 05-16-06, 03:48 PM   #24
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but you're an idiot.
Stop insulting people, you'll get banned pretty quickly. And your English is terrible.
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Old 05-16-06, 03:49 PM   #25
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yeah, shut up kenny.
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