WTB Campy 25.8mm Seatpost
04-14-22, 02:13 PM
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Found the seatpost. Please delete
No longer need. Please delete. Thanks guys.
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70's Nuovo Record Jeunet Franche Compte, '88 105 Trek 1200, '85 Victory Bianchi Vittoria, '89 Exage Bianchi Strada LX, & '11 Shimano Masi Partenza
70's Nuovo Record Jeunet Franche Compte, '88 105 Trek 1200, '85 Victory Bianchi Vittoria, '89 Exage Bianchi Strada LX, & '11 Shimano Masi Partenza
Last edited by buddiiee; 06-02-22 at 06:44 AM. Reason: Found the part
04-28-22, 10:12 PM
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I don't think that was made. 25.0 yes, for the Alan's
them 26.2 Cinelli and .2 increments to 27.4
them 26.2 Cinelli and .2 increments to 27.4
04-28-22, 10:44 PM
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What is the frame? Are you replacing a 25.8 sp?
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1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super
1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super
04-29-22, 12:43 AM
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verktyg
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Campy 1044 2 Bolt Seatposts
Campagnolo introduced the 1044 alloy 2 bolt seat post in 1956. This is from the 1960 catalog. Note: 25mm & 25.8mm sizes listed.
I bought an all Campy 1972 Gitane Super Corsa. On the first ride, the seatpost kept sliding down. When I got home I immediately saw the problem. It had a 25.8mm seatpost instead of the proper 26.4mm post. The seat tube was oval. I rounded the seat tube and seat lug out, reamed and honed it to fit a 26.4mm seatpost, problem solved...
A few years back I picked up a 1990 Raleigh USA Team Technium frame with Reynolds 753 main tubes. It took a 25.8mm seatpost and bingo I was all set.
Hint/suggestion.... over the past 18 years I've posted a lot of info on seatposts and seat tube size problems. Try a Google search under verktyg and seatpost / seat tube. Lots of pretty pictures and 8x10 autographed color photographs...
verktyg
I bought an all Campy 1972 Gitane Super Corsa. On the first ride, the seatpost kept sliding down. When I got home I immediately saw the problem. It had a 25.8mm seatpost instead of the proper 26.4mm post. The seat tube was oval. I rounded the seat tube and seat lug out, reamed and honed it to fit a 26.4mm seatpost, problem solved...
A few years back I picked up a 1990 Raleigh USA Team Technium frame with Reynolds 753 main tubes. It took a 25.8mm seatpost and bingo I was all set.
Hint/suggestion.... over the past 18 years I've posted a lot of info on seatposts and seat tube size problems. Try a Google search under verktyg and seatpost / seat tube. Lots of pretty pictures and 8x10 autographed color photographs...
verktyg
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Don't believe everything you think! History is written by those who weren't there....
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Don't believe everything you think! History is written by those who weren't there....
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04-29-22, 05:35 AM
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Yea, just remembered this; it's for an old (early 70's) Jeunet, which when I was researching this a few weeks ago, I didn't know 25.6 even existed, and from sheldon browns crib sheet, I ordered a 25.8 and when I tried to stick it in, it was a tad too tight. I was running with a 25.4 which worked, (before I found that crib sheet) but I still wasn't happy with how much of the seat post clamp lugs were wrapped around the seatpost, almost touching. I was like there's no way they let this go.. so I started searching more. When I found the 25.8 I thought that was it! But it's a TAD too big. Though, I feel a really ****** seam on the inside of that seat tube, that I'm actually going to hone out before I give this a really fair chance of seeing if it's a true 25.8 or 25.6.
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70's Nuovo Record Jeunet Franche Compte, '88 105 Trek 1200, '85 Victory Bianchi Vittoria, '89 Exage Bianchi Strada LX, & '11 Shimano Masi Partenza
70's Nuovo Record Jeunet Franche Compte, '88 105 Trek 1200, '85 Victory Bianchi Vittoria, '89 Exage Bianchi Strada LX, & '11 Shimano Masi Partenza
04-29-22, 10:45 AM
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Yea, just remembered this; it's for an old (early 70's) Jeunet, which when I was researching this a few weeks ago, I didn't know 25.6 even existed, and from sheldon browns crib sheet, I ordered a 25.8 and when I tried to stick it in, it was a tad too tight. I was running with a 25.4 which worked, (before I found that crib sheet) but I still wasn't happy with how much of the seat post clamp lugs were wrapped around the seatpost, almost touching. I was like there's no way they let this go.. so I started searching more. When I found the 25.8 I thought that was it! But it's a TAD too big. Though, I feel a really ****** seam on the inside of that seat tube, that I'm actually going to hone out before I give this a really fair chance of seeing if it's a true 25.8 or 25.6.
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1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super
1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super
04-29-22, 10:56 AM
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To in my experience to correct, an adjustable reamer is best and does require some mechanic finesse to get that right. An adjustable reamer will Round out the typical heat distortion as observed on many frames, actually almost all with have some distortion that should be corrected.
05-02-22, 09:58 AM
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Ok, honed it out and it is indeed 25.6mm for this old Jeunet. Even before the honing of that internal seam, 25.4 was just too small, and 25.8 was just too big. Old Jeunets (at least this one) were actually 25.6mm ID's... Good to know. Now I don't need that seat post lol.
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70's Nuovo Record Jeunet Franche Compte, '88 105 Trek 1200, '85 Victory Bianchi Vittoria, '89 Exage Bianchi Strada LX, & '11 Shimano Masi Partenza
70's Nuovo Record Jeunet Franche Compte, '88 105 Trek 1200, '85 Victory Bianchi Vittoria, '89 Exage Bianchi Strada LX, & '11 Shimano Masi Partenza
