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.bsyptak
04-19-06, 11:36 AM
I've got an old 1983 Trek 614 which has a Sugino AT triple crankset on it. I've pulled the BB & the spindle measures 125mm. Sheldon says the BB is either "127.5 + 2 mm spacer" or "122.5 Asym". Hm..
Anyway, probably doesn't matter. What I want to do is convert this thing to a SS, so I've removed the inner chainring. Now it looks like a double (no extra stuff in the way due to the triple ring). I will also remove the outer 50t chainring & put the middle 45t ring in the outer position. Any idea what size BB I should buy? I'm not too concerned with the chainline at this point, because I can use spacers in the back between the hub & ss freewheel to get the chainline straight (did that on the last SS & it worked perfectly). Though I suppose getting the correct bb will maybe solve this problem for me.
Thx in advance.
Anyway, probably doesn't matter. What I want to do is convert this thing to a SS, so I've removed the inner chainring. Now it looks like a double (no extra stuff in the way due to the triple ring). I will also remove the outer 50t chainring & put the middle 45t ring in the outer position. Any idea what size BB I should buy? I'm not too concerned with the chainline at this point, because I can use spacers in the back between the hub & ss freewheel to get the chainline straight (did that on the last SS & it worked perfectly). Though I suppose getting the correct bb will maybe solve this problem for me.
Thx in advance.