Trek 520 question
09-15-08, 08:36 AM
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Trek 520 question
I have a Trek 520 and was measuring the seat post tube to get a spacer for my USE post to fit. I measured that seat tube several times and am still not sure if it is 27 or 27.2. Thoughts? I am starting top think that the difference is bunk.
I have a Mieta Lupa frame that I was told was 27.2 and I am having a hell of a time get a 27.2 post down easy enough to make hieght adjustment easy. It is really tight and I even polished it. Is the seat tube clean, yes.
Seat post are driving me crazy
I have a Mieta Lupa frame that I was told was 27.2 and I am having a hell of a time get a 27.2 post down easy enough to make hieght adjustment easy. It is really tight and I even polished it. Is the seat tube clean, yes.
Seat post are driving me crazy
09-15-08, 03:01 PM
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My guess would be 27.2 based on Sheldon's seat post database. It seems to have been a fairly common size for the older Trek's. If you want to be positive you could take it down to your LBS and have them measure it with a special post they ought to have.
09-15-08, 03:47 PM
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Have you gently spread the "ears"?
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09-15-08, 05:38 PM
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09-15-08, 06:41 PM
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My 1988 has a 27.2 mm seat post, but that was the last year of the 531 main frame. Trek used several different tube sets over the years, so I can't say if mine is the same as yours.
09-16-08, 07:32 AM
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My wife had a slightly later 520-- we bought the frame only as a closeout in 1991, it was NOS a couple years old by then; and it took a 26.8 post. It was purple, and the tubing was TrueTemper, if that helps narrow the year down.
Ironically, in 1991 the closeout price on the 520 frame was $335, exactly the same as I paid for my 720 frame brand new in 1983.
Ironically, in 1991 the closeout price on the 520 frame was $335, exactly the same as I paid for my 720 frame brand new in 1983.
