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LR 15 Dropout Compatibility

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LR 15 Dropout Compatibility

Old 06-11-13, 02:25 AM
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smithedward
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LR 15 Dropout Compatibility

I was interested in putting the LR15 track dropouts on a future build but was unsure of what tubes to use since they are "plug in" dropouts. Can I use this Chromor tube set with these dropouts?
Thanks,
Smith

(Dropouts: https://www.cycle-frames.com/bicycle-...-IN-STYLE.html
Tube Set: https://www.cycle-frames.com/bicycle-...E-TUBESET.html)
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Old 06-11-13, 06:56 AM
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unterhausen
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you can find the columbus catalog and check, I don't know if it works

One thing to take into consideration with those dropouts is that the cs/ss angle is a little weird. I have seen some bikes that looked really horrible because the ss angle didn't match the angle of those drops
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Old 06-11-13, 08:29 AM
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Here's the 2010 Cromor data. The LR 15 track end chain stay plug is 11.4mm, and the seat stay plug is 9.9mm

The tubeset offered by Nova includes the 24mm oval chain stay (CRM114OV) and the 16mm seat stay (CRM615560).

The chain stay at the dropout end has a 12.5mm O.D. and 0.8mm walls, so 12.5 - 1.6 = 10.9. The 11.4mm plug won't fit into a 10.9mm hole without some work.

Unfortunately, the seat stay diameter at the small end of the tube isn't provided on the data sheet, so you may want to contact Nova and ask. The wall thickness is 0.8mm, so subtract 1.6mm from the O.D. you get from Nova for the I.D., knowing that it needs to accept a 9.9mm plug.



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Old 06-11-13, 09:33 AM
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unterhausen
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having the dropout bigger than the hole is the desired situation. You have to reduce the size of the plug to fit.
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Old 06-11-13, 02:59 PM
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JohnDThompson 
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Originally Posted by unterhausen View Post
One thing to take into consideration with those dropouts is that the cs/ss angle is a little weird. I have seen some bikes that looked really horrible because the ss angle didn't match the angle of those drops
That's a nice thing with the Nagasawa dropouts; the seat stay socket is a separate piece that can pivot a little on the dropout to accommodate different angles:

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Old 06-11-13, 03:42 PM
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GrayJay
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16mm (big end) single taper stays are usually 12.5mm OD on the small end, too big for a good fit to those plugs. Better to use 14mm/10.5mm single taper stays. While they (and the chainstay ends) may initially be too small, you can cut some excess length from the small end to where they are a better ID fit to the plug as the taper expands. Combine with filing the plug down for an exact final fit.

To use the 16mm CS, you might consider using Novas MTB track DO;
https://www.cycle-frames.com/bicycle-...lug-style.html

Easy enough to cut& file away the derailleur hangar, the plugs are sized for 12.5mm OD CS & SS, the wider angle is more suitable for typical geometry than the 50 of the other track DO.


Plate track dropouts are also an easy and versatile option.
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Old 06-11-13, 09:43 PM
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smithedward
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Thanks for all the replies.
Where would I find those Nagasawa dropouts?
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