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1987 Cannondale SR400 vs SR600?

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1987 Cannondale SR400 vs SR600?

Old 09-04-12, 03:38 PM
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meatvision
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1987 Cannondale SR400 vs SR600?

Hey all,

I've been looking for a 1987 Cannondale SR600 frame to build up for a while, but I've had some trouble finding one. I've found a fully-built SR400 from the same year on craigslist for a price that I would have paid for the SR600 frame alone, and I'm thinking about getting this bike rather than just the elusive SR600 frame. Is there a large difference between the quality of different levels of Cannondale frames (SR400, 500, 600, 1000, etc), or is the main difference found in the components? I assume because they're not steel, then the frames produced in the same year can't be of hugely varying quality. But then again, I'm no Cannondale expert.

Will I find an SR600 frame to be more responsive, lighter, etc than an SR400? Or are they more or less the same frames but with a different quality of components?

Thanks for your help!
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Old 09-04-12, 03:41 PM
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What size you looking for ?
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Old 09-04-12, 03:42 PM
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I'm wondering if the frame angles on the 600 is steeper than the 400.....
Steeper = more responsive/quicker handling...some describe it as "nervous" handling too.

Chombi
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Old 09-04-12, 03:42 PM
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sloar: 56! or 54. 55cm would be ideal but I know Cannondale skipped that size.
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Old 09-04-12, 03:48 PM
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Originally Posted by Chombi View Post
I'm wondering if the frame angles on the 600 is steeper than the 400.....
Steeper = more responsive/quicker handling...some describe it as "nervous" handling too.

Chombi
That might just be it. The 1987 catalog has the SR600 with criterium geometry and the SR400 with standard geometry.
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Old 09-04-12, 03:49 PM
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So far as I know, in 1985 at least, all the SR frames were the same. The only difference was the components.

Edit: in '85 this was true but it looks like by '87 they did have two different geometries.
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Old 09-04-12, 03:55 PM
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Here's the comparison of SR600 to SR400 frame specs:

SR600 / SR400
Seat tube angle: 73.7 / 73.7
Head tube angle: 74.25 / 73
Top tube length: 22 / 22
Chainstay length: 15.75 / 15.75
Fork rake: 1.5 / 1.5
BB height: 10.75 / 10.75
Wheelbase: 38.48 / 38.9
Trail: 2.2 / 2.5
Ground to top tube: 31.9 / 31.9
BB to top tube: 22.07 / 22.07

I don't know what some of these mean but there are some minor differences. I don't know how large a difference these minor differences will make though..
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Old 09-04-12, 04:24 PM
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Originally Posted by BlueDevil63 View Post
So far as I know, in 1985 at least, all the SR frames were the same. The only difference was the components.

Edit: in '85 this was true but it looks like by '87 they did have two different geometries.
Yep, looks like they may have introduced criterium geometry in 87.
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Old 09-04-12, 04:38 PM
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meatvision, The frame with the steeper geometry was a criterium racing frame where quick handling is paramount. The other frame was the road race geometry and in time Cannondale kept that geometry and dropped the criterium frame. The road race frame will give a bit more warning when you're at the cornering limits and the crit frame is just as stable at speed as the road race frame. I have an '89 crit bike and is the one Cannondale roadie that I kept, selling off all of the others.

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Old 09-04-12, 05:04 PM
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Where does the SR500 fit in there?
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Old 09-05-12, 08:37 AM
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There's a 1987 Cannondale here: http://hudsonvalley.craigslist.org/bik/3234697962.html

Seller doesn't list the model. I think the 'criterium' frames had a larger down tube. Good luck with your searching!
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Old 09-05-12, 05:20 PM
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There's an '87 SR600 being parted out in the Classic & Vintage Sales subforum, better move quick if it's your size.
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