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Old 08-03-12, 11:26 PM   #1
veryredbike
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Trimming tapered end of chainstays

I have these: http://www.cycle-frames.com/bicycle-...HAINSTAYS.html and these: http://www.cycle-frames.com/bicycle-...-IN-STYLE.html

The plugs on the dropout don't fit into the chainstay. The obvious solution seems to be cutting the tapered end of the chainstay until the plug fits, but I'm not sure excactly how they set up the butts on it. Anyone know how quickly it thins?

Thanks,
Jim
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Old 08-04-12, 07:25 AM   #2
Live Wire 
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The chain stay thickens because it it swaged down to 12.5 mm. So it starts thinning as it tapers out. That said, you'll be fine trimming till it fits as you won't have to cut much. You can file the plug a little too.
Your real issue is going to be the angle between the cs and ss. Those dropouts would be good for a bmx bike, I think nova sells another pair better suited to a full sized frame.
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Old 08-04-12, 11:37 AM   #3
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Good call. I'll do some looking for a replacement.
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Old 08-04-12, 12:04 PM   #4
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Does the same apply to fork blades?
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Old 08-04-12, 01:42 PM   #5
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I used those dropouts on the first two frames I built. I curved the seatstays to fit. They came out looking kind of good, in my opinion of course.
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Old 08-05-12, 02:56 PM   #6
unterhausen
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Originally Posted by veryredbike View Post
Does the same apply to fork blades?
I have put dropouts in the lathe to cut them down when I couldn't trim the taper the way I wanted. Usually you can trim the taper though
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Old 08-06-12, 12:25 AM   #7
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I have put dropouts in the lathe to cut them down when I couldn't trim the taper the way I wanted. Usually you can trim the taper though
Just took the metal lathe class, really looking forward to any excuse to play with it!

One remaining question: I just did a pair of these and found that the inside of the plugs for both chain and seat stays had some curves. I had to do some mitering to get the tube all of the way in. I've seen some references to just cutting the tube even and putting it in as far as it will go. Am I using a different dropout, are they wrong, or is it unnecessary to have the stay go 100% of the way in?

Thanks!
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