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Thank you for the offer, mine is also an Orange post and those fittings look identical (ID of the tube ~26mm as best as I can tell) so may have done the trick. It actually raises new questions though: I can't get enough clamping pressure to prevent the aluminium parts rotating in the steel outer tube. I thought the indentations in the lower section were deformations caused over time and were the culprit but it now looks like they were intentional. I have made a crude shim out of a piece of steel which increases the diameter - any better suggestions? The shim works but is just a pig to install.
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nejib
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any better suggestions?
I never had any issues with the steel one, but my almost identical Dean Ti one needed Loctite bearing fitting compound to stay in place. The current product is probably 270.
As discussed previously, posts where the clamp goes through the round window work best for riders whose weight vector passes as close as possible to the axis of the cylinder. If you're substantially eccentric, you might never get it to work satisfactorily and should probably change to a different design.
gbj_tester
What's the ID of the tube which clamps around the aluminium bits? I suspect that the Orange post I have in front of me is a Zoom with customer branding, you can have that for less than that ebay one went for 🙂