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How high can I safely adjust saddle height?

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zoejojo Offline
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Posts: 2
Joined: Jan 2011
Post: #1
How high can I safely adjust saddle height?
I'm a starving student. I'm stuck in a foreign city for one semester. My savvy craigslist $20 purchase is a wee bit small. It's too short for my legs but the smaller frame is comfortable for my arms.

I understand how much leg extension I need - how high can I extend the seatpost? If I extend it past the max height line, but keep the post inserted enough that it's a few mm past the ears, what can go wrong?
Jan 30, 2011 11:39 AM
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GeorgeET Offline
Veteran Member

Venice Beach, CA
Posts: 1,114
Joined: Apr 2010
Post: #2
RE: How high can I safely adjust saddle height?
Well a few mm is just not enough, the leverage of the seat post may become to great for the frame.
The lean to the handlebars too extreme.

Get use to riding BMX style . Its only for one semester. Sometimes savvy is not enough. If you absolutely have too try a longer seat post.
IMO its done learn to live with it, unless it causes you pain.

Never Give Up!!!
Jan 30, 2011 01:00 PM
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cyclerUK Offline
Veteran Member


Posts: 753
Joined: Jan 2009
Post: #3
RE: How high can I safely adjust saddle height?
If the seat is too low then you knacker your knees, and very quickly.
(we are going to have a lot of people who will need knee operations soon.)
On the other hand if you take it beyond the "max" mark then you do so at your own risk.
If you have any cycling buddies will they do a swap if you can find a suitably longer one?

Ride hard or ride home alone!
Jan 30, 2011 02:01 PM
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zoejojo Offline
New Member


Posts: 2
Joined: Jan 2011
Post: #4
RE: How high can I safely adjust saddle height?
Thank you. I've never heard of a bent frame but I'd hate to impale myself. It's tempting to disregard unknown physics. BMX style it is, then. 15 weeks to go.

(Jan 30, 2011 01:00 PM)GeorgeET Wrote:  Well a few mm is just not enough, the leverage of the seat post may become to great for the frame.
The lean to the handlebars too extreme.
Jan 30, 2011 05:35 PM
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GeorgeET Offline
Veteran Member

Venice Beach, CA
Posts: 1,114
Joined: Apr 2010
Post: #5
RE: How high can I safely adjust saddle height?
Ye that seems the easiest solution. We got lots of guys around here riding on 20 inch kids bikes.:-))

BMX bikes are very popular in Venice California.

As per bend frame they do bend and crack .


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Never Give Up!!!
Jan 30, 2011 06:35 PM
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nfmisso Offline
Veteran Member

San Jose, CA
Posts: 2,222
Joined: Jul 2010
Post: #6
RE: How high can I safely adjust saddle height?
you can purchase 400mm seat posts for under $20.

Be warned, that they can be bent. The aluminum ones have thicker walls, and are less likely to buckle than the steel ones.

Nigel
Jan 31, 2011 02:00 AM
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RobAR Offline
Veteran Member

Mountain Home, AR
Posts: 725
Joined: Sep 2010
Post: #7
RE: How high can I safely adjust saddle height?
nfmisso is on it. A longer post might be your answer. BMX style would burn my quads big time.

The main thing is to be certain that the post inserts deeper than the lower weld of the top-tube / seat-tube junction.

Wheelies don't pop themselves. (from a QBP fortune cookie)
Jan 31, 2011 06:08 PM
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GeorgeET Offline
Veteran Member

Venice Beach, CA
Posts: 1,114
Joined: Apr 2010
Post: #8
RE: How high can I safely adjust saddle height?
Ahh, you guys are a bunch off woosies. We got real bikers here in Venice. Hi , Low and in between.

BTW I suggested tall seat post too but a post would coast more than his bike. :-)))


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Never Give Up!!!
Jan 31, 2011 07:14 PM
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JohnV Offline
Senior Member

Tampa. FL
Posts: 472
Joined: Jan 2011
Post: #9
RE: How high can I safely adjust saddle height?
I sure would hate to do an emergency dismount on that first bike. I'm thinking that he doesn't ride it in traffic. I wonder where he carries the ladder to get on and off.

Going back to the question at hand. Have you tried looking for a seat tube in a junk yard or dump that can fit inside the seat tube on your bike. If you can find one, use the smaller diameter seat tube for the seat and cut the seat mount off the current tube. Then you can slide one into the other and run a bolt or two through them to hold them together or see if a seat tube clamp will keep them from sliding into one another. Not the best way to do this, but certainly the cheapest.

HCFR Cycling Team
Ride Safe...Ride Hard...Ride Giant
Feb 1, 2011 10:30 AM
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