So I get a new 7/8" seatpost. My old one has flaking chrome. Put it in the tube and it seems tight. I've seen them start tight before, then loosen once the clamp area opens up. Uh-uh, not this one. So after driving it in about 3" I decide to remove it. It took a pipe wrench and alot of sweat and upward pulling to get it back out. The thing was trying to collapse also so I had to stick a large bolt in the end to keep it round. And of course the chrome is fubar'd where the wrench was. Darn Chinese products. The old post slips in and out like it should. I wish I had some digital calipers to measure it. I hope they understand.
Back to the LBS...
- Thread starter JLarkin
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deorman said:
You mean: Is it possible you have a 13/16" hole and a 7/8" post. If you turned a piece of bar stock on a lathe to exactly .875" (7/8") then plated it with copper, nickel, then chrome, I'd bet it would be 30 or 40 thousandths oversize. Maybe those Chicoms didn't take that into account. Gary
it is funny you mention this. feel down inside the seat tube. if it is an internal luged frame you may find that the lug is sticking way far into the tube. a customer brought in a frame that had just this issue and even a schwinn style post would not clear it. i told him the only way to get it to fit would be to grind it but it is sorta dangerous because that lug is holding the frame together.
I measured it 3 more times. The original post is 7/8", the hole is 7/8". I expected a snug fit but not semi-permanent. Regardless I returned it successfully though he gave me a rant about "7/8 is 7/8". I did not feel obliged to explain possible manufacturing inconsistencies, he was smarter than me. :roll:
