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  1. #1
    Senior Member badger_biker's Avatar
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    Need a recommendation for 7spd rear derailleur

    Can anyone recommend a good middle of the road Shimano 7 speed index rear derailleur? It will be for a triple and the chainrings and freewheel need to be swapped for some lower gearing. Probably looking at something similar to a 13-32 rear and 48-38-24 front.
    The bike is a 1986 Trek 300 which isn't ideal for touring but should be adequate for the 1 to 2 week trips anticipated.
    I'm thinking of a Deore LX or 105 but am not sure on the capacities. Any comments on what has worked for you would be great.
    1975 Motobecane Le Champion
    1984 Bridgestone 400 -- 1985 Specialized Expedition 1986 Cannondale ST400 and Nishiki Cascade -- 1987 Trek Elance 400T and Schwinn Voyageur
    1990 Cannondale ST400 -- 1994 Univega Via Carisma

  2. #2
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    I recommend Shimano Deore front and rear derailleur. You'll want a 42-32-22 MTB crankset. With an 11-34 cassette that should give you a low of 16". Good enough for riding up hills with a full load.

  3. #3
    Senior Member semperfi1970's Avatar
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    NormanF said it for me.
    Its more than just a bicycle, it changed my life.

  4. #4
    Senior Member Wogster's Avatar
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    Quote Originally Posted by badger_biker View Post
    Can anyone recommend a good middle of the road Shimano 7 speed index rear derailleur? It will be for a triple and the chainrings and freewheel need to be swapped for some lower gearing. Probably looking at something similar to a 13-32 rear and 48-38-24 front.
    The bike is a 1986 Trek 300 which isn't ideal for touring but should be adequate for the 1 to 2 week trips anticipated.
    I'm thinking of a Deore LX or 105 but am not sure on the capacities. Any comments on what has worked for you would be great.
    It may be tough to find a decent new 7spd dérailleur however, any 8 speed or 9 speed dérailleur should work, they may be easier to find and cheaper then a 7 speed these days. If your looking specifically at Shimano, check their website, capacities should be there.

  5. #5
    Senior Member caotropheus's Avatar
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    Any long cage dérailleur will do. Shifting depends on the shifter, not the dérailleur. The dérailleur is nothing but a spring with a couple of jockeys. If you cannot find a 7 speed indexed shifter, get a friction shifter. You will be surprised with the plasticity and reliability of a friction shifter!
    Last edited by caotropheus; 11-01-09 at 12:23 PM.

  6. #6
    Senior Member oldride's Avatar
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    I run a 7sp setup on one of my bikes. It has a triple crankset (48-36-26) and a 12-28 cassette with 105 triple FD and 105-GS (mid cage) RD and 9sp chain. Works great. Shimano says the 105 RD will only handle a 27t cog but I have heard of folks using a 32t cog with no problems.

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