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Conversion from 1piece to 3 piece BB
I have seen and read a few posts about this topic. However the part needed always seems to be out of stock. It is for example a TruVative BB032 conversion kit. Can anyone provide more up to date information. I am trying to convert a 10-15 year old Sears bike with a single piece crank to a three piece crank. The chain ring teeth presently seem to be poor quality, although some experts suggest that the appearance is normal. I want to have more freedom to buy modern chain rings as I have been unable to find a double chain ring replacement for the existing Ashtabula type system. The bottom bracket 68 mm long and about 50 mm internal diameter. Will appreciate any help I can get.
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Originally Posted by hazelgrove
(Post 9473492)
I have seen and read a few posts about this topic. However the part needed always seems to be out of stock. It is for example a TruVative BB032 conversion kit. Can anyone provide more up to date information. I am trying to convert a 10-15 year old Sears bike with a single piece crank to a three piece crank. The chain ring teeth presently seem to be poor quality, although some experts suggest that the appearance is normal. I want to have more freedom to buy modern chain rings as I have been unable to find a double chain ring replacement for the existing Ashtabula type system. The bottom bracket 68 mm long and about 50 mm internal diameter. Will appreciate any help I can get.
http://www.bikepartsusa.com/bikeparts/item/01-78753/ and here's a conversion bottom bracket: http://www.bikepartsusa.com/bikeparts/item/01-98690/ |
Bikeparts.com has the Truvativ conversion kit which looks really great. ID # BPC110368 for $21. Out of stock, but you could check back if you're set on going to 3-piece.
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