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Compagnolo rear dropouts measurment

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Compagnolo rear dropouts measurment

Old 02-15-16, 07:42 AM
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Shato37
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Compagnolo rear dropouts measurment

Hello guys, im looking to buy a set of compagnolo rear dropouts ( as shown in the pic - https://imageshack.com/i/pm3EQXxMj ) for a diy project. I couldnt find their measurment online anywhere. As anyone used these or owns a pair and can give me a few measurment of them to see if they will fit on my frame? Thanks again for your help!
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Old 02-15-16, 08:20 AM
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unterhausen
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have you already sourced the dropouts? Because it seems to me that they usually are fairly expensive
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Old 02-15-16, 08:54 AM
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Live Wire 
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For the amount of work those drops need to look decent, you'd be better off making your own. That way you can guarantee they will fit your frame...or get the ones from Henry James.
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Old 02-15-16, 09:30 AM
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Why do you need the drop out dimensions? Generally builders work to the frame design specs and make the cuts, miters, jig set up to suits whatever shape the drop outs have as the building process progresses. If you think you can cut/miter all your tubing and set up your jig in absence of the actual parts, like the drop outs, then good luck! These, as well as most forgedcast tab attachment type of road drop outs, have dimensions which the vast majority of road components have been designed to work with.

The only two dimensions that I get concerned about are the axle to der hanger mount hole and the angle between the seat and chain stay tabs. The hanger drop length is really only an aspect of how large a rear cog can fit above the upper pulley (which as we all know has many other contributing factors which play larger roles). The tab angle is only really a factor for cosmetics. Many, many thousands of small frames, with stay angles under 60*, have been made with drop outs with tab angles of greater then 65*. How one blends the stays and the drop out tabs is but a part of the frame building skills.

Lastly I'll mention that many more Campy drop outs have broken then any other brand. Some of this is from the high rate of production that some bike companies require, and less control of temp levels common to ramped up production. Some of this is the overly aggressing finishing of the stay end and the tab, and the material removal resulting. Some of this can be laid at the feet of the drop out it's self. There are many references in the history of drop out designers to strengthen their drop outs, as compared to Campy's.

I, and many others, will strongly suggest that you have all your frame parts on hand before you complete your design or cut any metal.

So I'll ask you, why do you wish to use Campy drop outs? There are very valid reasons to do so. What are yours? Have you considered other brands? Why not these? Andy. (who has more brands and types of drop outs in his stash then any other frame part).

Last edited by Andrew R Stewart; 02-15-16 at 09:33 AM. Reason: better phrasing
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Old 02-15-16, 10:19 AM
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I can't imagine that campagnolo track drops are particularly failure-prone. But they do seem to go for $50, whereas there are a lot of less expensive alternatives
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Old 02-15-16, 10:25 AM
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Hi andy, i really eont mind what brand of dropouts to use. Ive looked online and the only place that ive seen any for sale (ans that would ship to israel) are two on ebay that are campy dropouts. I would like to get my hands on a strong set at a resonable price. If you dont mind recomending and linking me to a good set of sropouts.
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Old 02-15-16, 10:36 AM
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I would ask Henry James if they would ship: Henry James Front Dropouts - No Eyelets : Henry James Custom Made Parts For Bicycle Frame Builders and Bike Enthusiasts

Also, I assume Ceeway will ship, given that they ship from the U.K. to the U.S. With Ceeway, you have to email for a quote
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Old 02-15-16, 06:09 PM
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Originally Posted by unterhausen View Post
I would ask Henry James if they would ship: Henry James Front Dropouts - No Eyelets : Henry James Custom Made Parts For Bicycle Frame Builders and Bike Enthusiasts

Also, I assume Ceeway will ship, given that they ship from the U.K. to the U.S. With Ceeway, you have to email for a quote
Eric- I'm showing my laziness in not even looking at the link Shato37 provided. Hence my assumption he was talking about road drop outs (as I was in my post). I guess wondering about dimensions for track drop outs is even further off my radar screen.

Henry James produces three different sizes/shapes of track drop outs because there are times when replacing road with track drop outs goes easier with more drop out tab to work with. One more example why it's best to have the parts on hand and why frame work isn't as cheap as some wish it could be. Andy.
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Old 02-15-16, 10:29 PM
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I've used the Henry James "conversion" track ends and like them because the stay tabs are long and there's enough material on the tabs to accommodate virtually any stay angles.

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Old 02-17-16, 01:30 PM
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CeeWay in Britain has a decent selection of dropouts and claims to ship worldwide:

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