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Seat post diameter 1992 Cannondale ST 600?

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Seat post diameter 1992 Cannondale ST 600?

Old 07-20-20, 01:36 PM
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mplsbiker
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Seat post diameter 1992 Cannondale ST 600?

I know I should have a caliper for this, but I donít, so I am going to ask a stupid question.

Doing a new Cannondale ST600 build and was wondering what size seat post that frame takes and what is the seat tube diameter for a clamp on FD.

I figure someone out in C&V land knows this.

Thanks in advance and I am ordering a caliper!
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Old 07-20-20, 01:37 PM
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Originally Posted by mplsbiker View Post
I know I should have a caliper for this, but I donít, so I am going to ask a stupid question.

Doing a new Cannondale ST600 build and was wondering what size seat post that frame takes and what is the seat tube diameter for a clamp on FD.

I figure someone out in C&V land knows this.

Thanks in advance and I am ordering a caliper!
Off the top of my head, 27.2 is the standard 90s Cannondale size
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Old 07-20-20, 04:36 PM
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27.2 for the post and 31.8 for the FD clamp. If your inch ruler measures really close to 1 1/4" on the seat tube diameter, then it's 31.8 for sure.
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Old 07-20-20, 10:19 PM
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stardognine
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Originally Posted by RiddleOfSteel View Post
27.2 for the post and 31.8 for the FD clamp. If your inch ruler measures really close to 1 1/4" on the seat tube diameter, then it's 31.8 for sure.
Absolutely correct. 👍 I actually had an old Shimano MT62 FD, that was marked 1 1/4Ē, that fit an Ď85 ST seat tube perfectly. 🙂
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Old 10-05-20, 01:30 PM
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Just for fun I thought I would show some pictures of how it is going. I have not taken many pictures during the build, but now that it is getting close to finished I am excited and taking pictures.




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Old 10-05-20, 01:38 PM
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Very nice! Admire your flooring and the old library table too.
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Old 12-03-20, 10:04 AM
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Update on the project (Crossposted in "Touring"):

So the Cannondale ST 600 is finally finished, for now (Is a bike ever really finished?)

So here is the final build:
Frame: 1991 Cannondale ST600
Fork: (Original) Tange 90 Cro-Mo
Handlebars: Nitto Grand Randonneur 25.4 44cm
Stem: Nitto Technomic 25.4 70mm
Levers/Shifters: Campagnolo 8 Speed Chorus
Handlebar Tape: Brooks Microfiber Brown
Headset: (Original) Tange-Seiki
Brakes: Tektro CR-720 Silver (Some Kool-Stop pads are on their way)
Bottle Cages: 2x Zťfal Classic
Seatpost: Thomson Elite Seatpost Silver - 27.2 mm
Saddle: Brooks Cambrium C17 Brown/Rust
Bottom Bracket: Campagnolo Veloce Bottom Bracket English 155.5mm
Crankset: Campagnolo Racing Triple 46/39/26 T.A. Vento 46t and 39t Outer/Middle Rings, Sugino 26t Inner Ring
Cassette: Miche Primato 8 M Cassette 8-speed 13-28: (13|14|15|17|19|21|24|28)
Rear Derailleur: Campagnolo Racing Triple 8 Speed
Front Derailleur: Campagnolo Racing Triple
Chain: KMC X8
Tires: Panaracer Gravel King SKs 38mm (Tan Sidewall)
Wheels/Hubs: Northern Rose Custom Built 700c/Campagnolo Veloce 32H 9/10/11
Pedals: iSSi Flip double sided SPD/Flat
Cables/Housing: Jagwire




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