switching from a triple to a double
#1
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switching from a triple to a double
Buying an 05 cannondale r700 that I was told has a triple crank. (have not picked it up yet). The bike is described on the cannondale site as having a double, a different model has the triple. Anyway if it has a triple will I be able to put a double crank on it without changing everything? Has 105 fd and an ultegra rd. I have done a search but did not find what I was looking for. Thanks
#2
Senior Member
You might have to change the front shifter but I can't think of a reason why you would have to change everything...
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1984 Cannondale ST
1985 Cannondale SR300
1980 Gary Littlejohn Cruiser
1984 Trek 760
1981 Trek 710
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1984 Cannondale ST
1985 Cannondale SR300
1980 Gary Littlejohn Cruiser
1984 Trek 760
1981 Trek 710
Pics
#4
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Proper chain line is the space between 2 chainrings on a double, lined up with the center of the rear cluster.
on a triple , the middle chainring is lined up with the center of the rear cluster.
so you may be able to buy different chainrings and a different BB and use the triple arm,
leaving off the 3rd chainring.
But current trend is fixing the BB spindle tube to the right crankarm.
Then you need buy the whole set.. the BB bearings on those are External.
on a triple , the middle chainring is lined up with the center of the rear cluster.
so you may be able to buy different chainrings and a different BB and use the triple arm,
leaving off the 3rd chainring.
But current trend is fixing the BB spindle tube to the right crankarm.
Then you need buy the whole set.. the BB bearings on those are External.
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If you want a double buy a double. Changing a used bike from a triple to a double may cost enough to make the purchase a bad idea.
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