shimano sante freehub 7 speed to 9 speed conversion
02-10-11, 12:04 PM
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shimano sante freehub 7 speed to 9 speed conversion
how intensive will this conversion be? is it just a matter of removing the 7 speed body and replacing it with a 9 speed body?
02-10-11, 12:31 PM
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I'm not certain about the Sante but all of the Shimano freehubs (7-speed and above) I've dealt with have the freehub body held onto the hub shell with a hollow bolt that takes a 10 mm allen wrench. You remove the axle and bearings, insert the 10 mm wrench, unscrew the bolt and the body pretty much falls off. The new 8/9/10-speed freehub body then goes on using the same bolt. There will be a very thin washer/spacer behind the old body. Keep it in place and use it with the new one.
You will need to recenter the axle in the cones and locknuts since an 8+ speed hub is 4 mm longer than a 7-speed. The axle stubs sticking out of each locknut will go from 5.5 to 3.5 mm but that's sufficient. Also, the driveside cone and seal from your hub may not match up with the new freehub body and you will need the appropriate parts or be willing to jury rig the old ones. Finally, you will need to redish the rim to center it over the modified hub.
You will need to recenter the axle in the cones and locknuts since an 8+ speed hub is 4 mm longer than a 7-speed. The axle stubs sticking out of each locknut will go from 5.5 to 3.5 mm but that's sufficient. Also, the driveside cone and seal from your hub may not match up with the new freehub body and you will need the appropriate parts or be willing to jury rig the old ones. Finally, you will need to redish the rim to center it over the modified hub.
