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We can make this easy... Lets assume your frame is totally straight and not bent in anyway. Measure front chainline. Chainline is the distance the chain is from the bike's centerline. You will need an inexpensive machinist's scale . A machinist scale is just a small 6" long ruler. On a machinist's scale the zero mark is exactly at the edge of the ...


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I went to take pictures of the BB installation as @Batman suggested. After removing the crank arm, I actually noticed an offset of 1-2 mm on the drive side, like @mattnz anticipated. However, I also noticed that there was a gap of about 1 mm between the frame and the BB lid: After this observation I googled a little bit, and learned from this forum thread ...



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