Seatpost safety concerns?

Discuss light weight issues concerning road bikes & parts.
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addictR1
Posts: 1731
Joined: Sun Jun 10, 2012 1:11 am

by addictR1

I have a 3T Doric seatpost. On my new frame its a bit short since I previously cut it.

The height I need it at, I checked and it had about 1” inserted into the frame.

Is that not safe?


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by Weenie


skyliner1004
Posts: 85
Joined: Sat Jul 10, 2010 6:38 am

by skyliner1004

i dont know whats the industry standard for seatpost safety, but 1" is not safe...

the good thing for you now is... you get to go seatpost shopping! Whats a good WW seatpost these days?
Last edited by skyliner1004 on Thu Jul 18, 2019 2:53 am, edited 1 time in total.

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Alexbn921
Posts: 153
Joined: Wed Apr 10, 2019 6:39 pm

by Alexbn921

Not safe. You need around 100mm of insertion.

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Calnago
Posts: 8306
Joined: Sun Nov 07, 2010 9:14 pm

by Calnago

Uh, nope. I’d want at least 10cm.
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pdlpsher1
Posts: 2386
Joined: Thu Jul 19, 2012 6:09 pm
Location: CO

by pdlpsher1

Yeah. The safety issue is on both the seatpost and the frame. The minimum insertion helps distribute the load on your bike's seat tube. A too short of a seatpost inside the seat tube can cause the seatpost to break. Some frames manufacturers will deny a warranty claim if they suspect too short of a seapost was used.

addictR1
Posts: 1731
Joined: Sun Jun 10, 2012 1:11 am

by addictR1

It’s going onto my new build: T1SL
But yea guess it’s time to shop for new seatpost


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by Weenie


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