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  1. #1
    Senior Member
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    Long-cage derailleur for 13-34 freewheel on older Schwinn?

    I have a 1970s Schwinn Continental with a 14-28 rear cluster. (Front chainwheels are 52 tooth and 39 tooth). I'd like to put a 13-34 7-speed freewheel on it. I know I'll have to re-set the distance between the rear dropouts and get a longer axle and skewer.

    I'll also need a new (or used) rear derailleur that can (a) pivot front-to-back enough to handle a shift from 52 front/34 rear to 39 front/13 rear while keeping tension on the chain, and (b) move right-to-left enough to cover all seven cogs on the freewheel.

    Can anyone recommend a decent (hopefully cheap) rear derailleur that will handle both (a) and (b) above?

    Thanks all!

  2. #2
    Senior Member demoncyclist's Avatar
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    Any current Shimano or SRAM long cage MTB derailleur should work fine. You can probably get one at the LBS for less than $20.
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    Satanic Mechanic
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    2011 Lynskey Sportive (Shimano Ultegra 10s)
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  3. #3
    BG BikeGarage's Avatar
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    What kind of shifters are you using? I would stick with Shimano as you may not have enough cable pull for some SRAM MTB deraillers.

  4. #4
    Elitist Troglodyte DMF's Avatar
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    Quote Originally Posted by Little-Acorn View Post
    I have a 1970s Schwinn Continental with a 14-28 rear cluster. (Front chainwheels are 52 tooth and 39 tooth). I'd like to put a 13-34 7-speed freewheel on it. I know I'll have to re-set the distance between the rear dropouts and get a longer axle and skewer.

    I'll also need a new (or used) rear derailleur that can (a) pivot front-to-back enough to handle a shift from 52 front/34 rear to 39 front/13 rear while keeping tension on the chain, and (b) move right-to-left enough to cover all seven cogs on the freewheel.

    Can anyone recommend a decent (hopefully cheap) rear derailleur that will handle both (a) and (b) above?

    Thanks all!
    I rebuilt a 1970 Continental about 6 months ago. It has an Atom/HurÍt RD that can be rebuilt pretty easily. If I recall correctly the hanger is a claw that seats in the dropout. You'll need to find a hanger along with an RD (some lower-grade components like Shimano Tourney use a claw). Unless the current RD is trashed, try using it. It might not have enough coverage (the cage length isn't an issue) but then, it might.
    Stupidity got us into this mess - why can't it get us out?

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