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Rear derailleur replacement

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Rear derailleur replacement

Old 02-02-14, 01:40 PM
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Pistard
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Rear derailleur replacement

Can I replace my old subtour rear derailleur with a more modern one, or more recent then 1976 or so? do I have to look for something specific? thanks
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Old 02-02-14, 01:49 PM
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I suppose you can replace it with whatever will fit. If you don't have a derailleur hanger, you may have to get a hanger- or use the one on your existing derailleur.

What bike and derailleur are you speaking of, and what derailleur were you thinking of replacing it with?
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Old 02-02-14, 02:12 PM
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Just about any nicer RD will work fine for this. You can pick one up off of EBay for under $20.
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Old 02-02-14, 02:16 PM
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Sure, just make sure it can wrap enough chain for your gearing. When in doubt, a longer cage will always work.
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Old 02-02-14, 02:47 PM
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If you don't care about being vintage correct you can buy a fairly nice new Shimano Tourney for about $10.
https://www.amazon.com/Shimano-Tourne...ear+derailleur
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Old 02-02-14, 03:22 PM
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Originally Posted by JohnDThompson View Post
Sure, just make sure it can wrap enough chain for your gearing. When in doubt, a longer cage will always work.
That's the biggest part, make sure it's a longer cage. Sheldon says it's the shift levers & cassette/freewheel that matter, not the RD, & I kinda believe him. I've just switched to a Ultegra RD-6500, from a SunTour XC Pro, because it's just a bit longer cage, & works great. I might have been able to mod the XC Pro to work, but I like having a little margin for error.
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