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-   Clydesdales/Athenas (200+ lb / 91+ kg) (http://www.bikeforums.net/clydesdales-athenas-200-lb-91-kg/)
-   -   Seatpost SNAPPED OFF! (http://www.bikeforums.net/clydesdales-athenas-200-lb-91-kg/252103-seatpost-snapped-off.html)

(51) 12-11-06 05:29 AM

Seatpost SNAPPED OFF!
 
DAMN IT! 21 miles into my ride today I felt my seat lowering and then SNAP, the post snapped off at the collar. I was able to control the bike to a stop and then walked home 2 miles. Because of my height, I had 8" of post sticking up. I need a STRONG alternative...maybe even a piece of solid steel stock. Man, I've had some shi**y luck lately.
(Heads off to the 'Clyde-approved seat post' thread):mad:

Tom Stormcrowe 12-11-06 05:36 AM

Quote:

Originally Posted by (51)
DAMN IT! 21 miles into my ride today I felt my seat lowering and then SNAP, the post snapped off at the collar. I was able to control the bike to a stop and then walked home 2 miles. Because of my height, I had 8" of post sticking up. I need a STRONG alternative...maybe even a piece of solid steel stock. Man, I've had some shi**y luck lately.
(Heads off to the 'Clyde-approved seat post' thread):mad:

Ouch! No fun at all! You might look into a core type reinforcement like Air did. I hope the Clyde Seat post Thread survived the BF crash of recent times! If it didn't, I'm sure Air can give you the details!:D

Air 12-11-06 06:48 AM

YIKERS!!!!!!! Meet you over there :)

idcruiserman 12-11-06 08:18 AM

Why not ride home standing up?

Marylandnewbie 12-11-06 08:50 AM

Man you have bad luck, but with a broken seatpost it could be a lot worse!! Good luck on a sturdy replacement.

BigGuy 12-11-06 01:43 PM

Yep -'tis no fun. I'm on my 3rd post now... and 4th saddle in 16,000 kms. They usually sheer where the post clamps on to the under-saddle rails (whatever they're called). Metal fatigue I guess.

(51) 12-11-06 03:40 PM

Quote:

Originally Posted by idcruiserman
Why not ride home standing up?

Uhhhh. I had to hold on to my uber-heavy Brooks B-33 Bomber http://www.ekmpowershop.com/ekmps/sh...0%5Bekm%5D.jpg

And my right wrist is still weak from a crash a few weeks ago. Ugh. I think I'll take up walking.

alanfleisig 12-11-06 04:58 PM

No. 1 cause of seatpost failure: over-tightening seatpost collar.

Use only offset seatpost collar, like Campy, or new Bontrager.

Tighten only enough to keep post from slipping down and not a nano more.

Try a tried and true tough as nails seatpost, like a Thompson. If you show a lot of post, don't weight weeny out, and get the 330mm "mountain bike" post.

My Trek 1500 was "rattling" like crazy in August, when I got back from RAGBRAI. I replaced the water bottle cages, tightened hubs and spokes. Nothing worked. With lots of adrenaline flowing in the middle of a ride, and in frustration, I took my Allen key set and tigthtened the beezlebub out of every bolt I could reach. Two days later, seatpost snapped right at the collar.

Most unlikely dad in a souped-up Dodge RAM Hemi something something driving around to put his kid to sleep drove me the entire 20 miles back to my car. One cager demerit erased.

DieselDan 12-11-06 08:29 PM

8" of exposed seatpost? The problem isn't the post, but the frame. You had ⅔ of the post exposed, which was probably past the minimum insertion mark. There are longer posts on the market. Judging by the amount of post exposed, the frame is too small for you.

socalrider 12-12-06 02:39 AM

I would say a Thomson 400mm post would do the trick..

(51) 12-12-06 03:23 AM

Quote:

Originally Posted by DieselDan
8" of exposed seatpost? The problem isn't the post, but the frame. You had ⅔ of the post exposed, which was probably past the minimum insertion mark. There are longer posts on the market. Judging by the amount of post exposed, the frame is too small for you.

I'm a tall guy, but the seatpost was not past the insertion mark (There was 6 inches in the tube). My LBS had changed the seatpost to a longer one when I bought it. And you're right, the frame is too small, but it is the largest one I could buy without spending thousands of dollars on a custom.

I ordered a Thomson Elite (410 mm long). If that doesn't work I may have to pony up the $ for a custom build.

Air 12-12-06 05:46 AM

That sounds like a good plan - I would have gotten one if it was long enough!

(51) 12-12-06 05:53 PM

Quote:

Originally Posted by Air
That sounds like a good plan - I would have gotten one if it was long enough!

That is 16 inches of post. How much are you looking for?:eek:

Air 12-12-06 09:15 PM

Unfortunately I needed about 350 mm ABOVE the frame (it was for a folding bike). I took an 1/2" x 18" piece of water pipe and epoxied it inside the 27.2 diameter seatpost. So far freakin' great if not just a wee bit heavy :)

Cosmoline 12-12-06 09:32 PM

I had the same problem, but switched from the cheap steel tubes to an alloy post. That solved the problem. You can always switch to a high-end Thompson.


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