Trek Domane - movement in seat tube

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samsbike
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Joined: Wed Oct 19, 2011 19:52 pm

Trek Domane - movement in seat tube

Postby samsbike » Fri Dec 14, 2012 08:16 am

I am struggling to understand how it works. I realise that the seat tube gets to move a bit within the frame, but if the pivot point is the bottom bracket, isnt this likely to fatigue over time?

Or is the frame moving within the iso thing (technical term)?

thanks

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ALIHISGREAT
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Joined: Tue Aug 02, 2011 15:43 pm

Re: Trek Domane - movement in seat tube

Postby ALIHISGREAT » Fri Dec 14, 2012 08:35 am

What is the Warranty on the frame?

samsbike
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Re: Trek Domane - movement in seat tube

Postby samsbike » Fri Dec 14, 2012 08:49 am

Apparently its lifetime, but I am still curious

jezzpalmer
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Re: Trek Domane - movement in seat tube

Postby jezzpalmer » Fri Dec 14, 2012 09:01 am

Carbon flexes and doesn't fatigue/work harden in the way that metals do. Plus the movement doesn't look like it would be that great.

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Monty Dog
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Re: Trek Domane - movement in seat tube

Postby Monty Dog » Fri Dec 14, 2012 12:26 pm

The seatpost is located by an elastomer between the seat-stays - there is no pivot, but relies on the inherent flexibility of the seatpost structure. If designed correctly, it should in theory have an infinite fatigue life.
Make mine an Italian, with Campagnolo on the side..


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