Rear derailleur replacement

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02-02-14 | 01:40 PM

Pistard

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From: Columbia county, NY

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

02-02-14 | 01:49 PM

The Golden Boy

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From: Waukesha WI

Bikes: 1978 Trek TX700; 1978/79 Trek 736; 1984 Specialized Stumpjumper Sport; 1984 Schwinn Voyageur SP; 1985 Trek 620; 1985 Trek 720; 1986 Trek 400 Elance; 1987 Schwinn High Sierra; 1990 Miyata 1000LT

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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02-02-14 | 02:12 PM

zukahn1

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From: Fairplay Co

Bikes: Current 79 Nishiki Custum Sport, Jeunet 620, notable previous bikes P.K. Ripper loop tail, Kawahara Laser Lite, Paramount Track full chrome, Raliegh Internatioanl, Motobecan Super Mirage. 59 Crown royak 3 speed

Just about any nicer RD will work fine for this. You can pick one up off of EBay for under $20.

02-02-14 | 02:16 PM

JohnDThompson

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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.

02-02-14 | 02:47 PM

zukahn1

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From: Fairplay Co

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

02-02-14 | 03:22 PM

spacemanz

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From: Seattle

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Quote:

Originally Posted by JohnDThompson

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.