Centurion Pro Tour - Seatpost Size?
10-06-24 | 10:05 PM
#3
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10-07-24 | 08:43 AM
#6
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From: Fairplay Co
Bikes: Current 79 Nishiki Custum Sport, Jeunet 620, notable previous bikes P.K. Ripper loop tail, Kawahara Laser Lite, Paramount Track full chrome, Raliegh Internatioanl, Motobecan Super Mirage. 59 Crown royak 3 speed
Pretty sure these took a 26.6 SR alloy post originally.
10-07-24 | 10:54 AM
#7
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See this thread about a '77 Pro Tour, post #16, 41, and 42. He says his (1977) is 26.8. 1970's Centurion Pro Tour
Last edited by Hobbiano; 10-07-24 at 10:57 AM.
10-07-24 | 10:55 AM
#8
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See this thread about a '77 Pro Tour, post #16, 41, and 42. He say his (1977) in 26.8. 1970's Centurion Pro Tour
10-07-24 | 01:07 PM
#11
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OP: I also have a completely original 1980 pro-tour and I can't remember the seat post size off the top of my head. I'll check and confirm tonight.
Last edited by panzerwagon; 10-07-24 at 01:17 PM.
10-07-24 | 01:35 PM
#12
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Bikes: (2) ti TiCycles, 2007 w/ triple and 2011 fixed, 1979 Peter Mooney, ~1983 Trek 420 now fixed and ~1973 Raleigh Carlton Competition gravel grinder
I worked in a Fuji and Centurion shop in '77. A lot of 26.8s. The '76 Fuji Pro I raced was 26.8. (I bent its post on a frost heave coming down Smuggler's Notch at well over 50 mph. Won a sweet Zeus post at the the finish! It was (of course) 27.2. Had to swap it out for a Zeus 26.8. Luckily the sponsoring shop that offered that post was in my home city of Boston.
But, all that said (and all the above posts posted) still, calipers are your best friend. Centurions are bicycles. And like a lot of bicycles, built to very good standards. And lots of them. You never saw "standard" written out in singular and applying to bicycles.
But, all that said (and all the above posts posted) still, calipers are your best friend. Centurions are bicycles. And like a lot of bicycles, built to very good standards. And lots of them. You never saw "standard" written out in singular and applying to bicycles.
10-07-24 | 03:50 PM
#14
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Bikes: It's complicated.
gugie Had a '79 a while back, I think. Maybe he remember the seat post size as a confirmation.
26.8 on that one, confirming what others posted.
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10-07-24 | 06:40 PM
#16
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From: Baton Rouge La
Minor quibble: by 1982, Miyata was advertising use of it's own Miyata Cr-Mo tubing, not Tange Champion (which they used until around 1981 for their 1000 frames). The seatpost diameters you quoted are correct and correspond to my 83/84 pro tours and 86/89 1000s. Edit: not to derail the thread, but it would be very interesting to know what your '84 Miyata's tubing sticker says, thanks.
OP: I also have a completely original 1980 pro-tour and I can't remember the seat post size off the top of my head. I'll check and confirm tonight.
OP: I also have a completely original 1980 pro-tour and I can't remember the seat post size off the top of my head. I'll check and confirm tonight.
10-08-24 | 12:06 PM
#17
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Sure would like to know why the centre-pull braze-on champion 2 frames used 26.8, but the later cantilevered champion 2 frames all used 27.0 (all my frames are the same 54-ish size).
10-13-24 | 12:15 PM
#18
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From: Scranton, PA, USA
Bikes: '77 Centurion "Pro Tour"; '67 Carlton "The Flyer"; 1984 Ross MTB (stored at parents' house)
My '77 (without the chromed lugs) is 26.8 with the OEM post. Still rides great, some 14 years later.
