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looks to be some paint or possible surface corrosion on the inside of the tube- What's the best method of removal?
I'd give it a good skoosh of disc brake cleaner or wd40/gt85 type thing then ram a rag down there (keep hold of an end) with a long thing (screwdriver, socket extension, etc. Something blunt works best as anything too pointy will poke through the rag).
After that I'd be moving to a 1/2 round file if you have one or some sandpaper wrapped around the afore mentioned long thing. Foam back sandpaper is good as it helps to conform to the diameter of seatube without being too tight.
Check the top as well, overtightening a clamp can deform the ends and make it tight there but fine lower down.
Also check down inside for the holes where the top tube and seat stays join the seatube, there'll be holes drilled and they are often a source of burrs etc that can make post fitment tight.
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M_V
@chrismcr
Slow progress as I'm recovering from spinal surgery.
Getting a 27.2 seatpost in is tight as, to the point where I got in touch with Kinesis to make sue it was the right diameter- looks to be some paint or possible surface corrosion on the inside of the tube- What's the best method of removal?
Got second hand Carbon monkey lite bars, DT Swiss R1850 wheels, Zee mech and shifter. Have some Ultegra flat bar levers on the way.
Will buy a 4700 chain and wide range cassette from Ribble in the coming days
I still need brakes, pedals, grips and a 27.2 Carbon post (assuming I can get it in)
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