motion5447
12-08-04, 12:04 AM
how does a top pull and bottom pull front derail differ, besides the exposed mechanism on the one? they both pull the cable from the bottom bracket dont they? can you apply both to the same set up?
Bicycle Mechanics - front derail bp or tp question
Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.View Full Version : front derail bp or tp question
meatwad
12-08-04, 12:27 AM
One of the two pulls the derailer in the same direction as the rear one by pulling back on the lever. they are interchangeble.
roadfix
12-08-04, 01:46 AM
how does a top pull and bottom pull front derail differ, they both pull the cable from the bottom bracket dont they?
No. Depends on your frame. Cable is routed under the BB with bottom pull. With top pull, cable is routed from the top tube and down the seat tube to the derailleur.
You also have a choice of either a top or bottom SWING... Either only one or both styles can work depending on your frame.
No. Depends on your frame. Cable is routed under the BB with bottom pull. With top pull, cable is routed from the top tube and down the seat tube to the derailleur.
You also have a choice of either a top or bottom SWING... Either only one or both styles can work depending on your frame.