Author Topic: Original Thorn Audax - what seatpost size?  (Read 518 times)

zerogravitas

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Original Thorn Audax - what seatpost size?
« on: March 19, 2020, 03:37:03 PM »
Hi all, wondered if anyone can help me with this - I just bought a Mk1 Thorn Audax frame and fork (with the Reynolds variety pack tubeset 753/708/653/531!) ..sadly without seatpost.

I have a 26.6 post which fits but seems slightly looser than I would like and I'm wondering if anyone out there has one they could measure for me or knows the spec?

All the best!
Gabe

Mr-mac

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Re: Original Thorn Audax - what seatpost size?
« Reply #1 on: April 15, 2020, 12:10:43 AM »
27.2

zerogravitas

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Re: Original Thorn Audax - what seatpost size?
« Reply #2 on: April 23, 2020, 02:48:50 PM »
It seems my frame probably had an undersized post fitted in the past with the collar overtightened to try and secure it. The collar lug 'ears' had been bent in quite a way and didn't look quite right which was why I asked the question.

Having gently pried them open now it does indeed fit a 27.2. 

Turns out mine is actually 27mm. I suspect there may be a couple of variations out there.
« Last Edit: August 05, 2020, 08:59:53 PM by zerogravitas »