velomaniac wrote:
Not that I question your calipers but a 35.4mm clamp size exists, 35.8 does seem unusual. My solution would be to use shims to bodge the difference between the next clamp up. Other than your Hope clamp, next clamp up tends to be folding bikes like Dahon or Tern.
Thanks for the reply and suggestion. Shimming with a coke can takes me back to the days of USE seat posts, pile of crap that they were (even if looking great).
I sent an email to Marin tech about this and they said the correct size is 35mm which is what is stamped on the OEM QR. The odd thing is, when I measured the frame, its coming up 35.8 on the calipers (mitutoyo's). They are (were..) calibrated, so I'm a little bit stuck, unless they have fallen out of calibration. Marin put it down to thick paint, but I measured the frame after removing the OEM clamp, so its where its sitting rather than including any paint thickness.
All a bit odd.
I will find out in a few days because I've ordered a Hope QR in 34.9 which if its truly 35mm, should fit and I need to take a close look at the calipers!
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Jingle my Ringle.