Here are some measurements I took from some of the square taper cartridge bottom brackets we carry. The drive side length is measured from the edge of the bottom bracket shell to the very end of the spindle. These measurements should be good enough relative to each other for chainline adjustment, but I wouldn’t use this chart to compare with bottom brackets from other manufacturers, which may have different taper lengths.
| Bottom Bracket | Overall Length | Drive Side Length |
|---|---|---|
| Sugino/Tange 68-103 | 103mm | 18mm |
| Shimano UN54 68-107 | 108mm | 20mm |
| Shimano UN54 68-110 | 111.5mm | 20mm |
| Shimano UN54 68-113 | 114mm | 22.5mm |
| Shimano UN54 68-115 | 115.5mm | 23.5mm |
| Shimano UN54 68-118 | 118.5mm | 25mm |
| Shimano UN54 68-122 | 123mm | 28mm |
| Shimano UN54 68-127 | 128mm | 30mm |
All of us here at Harris Cyclery wish you the best, Jay and Ryan.
Origin8 Classique Saddlebag
An inexpensive alternative to a classic canvas saddlebag. Has the same dimensions as the “large” bag from a certain English manufacturer, but made in China from 600D polyester, rather than cotton duck. This makes for a lighter and less rugged bag. Has leather straps that are a little bit thinner than standard, but should hold up OK. Elton rode with this bag on his commute for a while, and it kept everything dry as expected. He was pleased with the overall function of the bag.
Mounts in the traditional fashion to any saddle with bag loops, such as the Brooks B17, B66, or B72. You can sometimes make do with a saddle without loops, but not always.
Origin8 Classique Saddlebag at Harris Cyclery