Difference between revisions of "Eccentric Bottom Bracket Modification"
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The biggest complaint that they all have is the weight of the stock EBB cam. I figured that I would make a tool to trim some fat off the EBBs for these racers. Every gram counts. | The biggest complaint that they all have is the weight of the stock EBB cam. I figured that I would make a tool to trim some fat off the EBBs for these racers. Every gram counts. | ||
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| + | The Fisher EBB measures 56.5mm. | ||
This is a picture of the Fisher EBB. It is designed like a giant quill stem. It weighs over 300 grams. That is some serious bullshit.<br> | This is a picture of the Fisher EBB. It is designed like a giant quill stem. It weighs over 300 grams. That is some serious bullshit.<br> | ||
Revision as of 16:52, 17 January 2007
Problem
I know a few people around the country that are sponsored by Gary Fisher to ride 29" Rig Singlespeeds for the 2007 season.
The biggest complaint that they all have is the weight of the stock EBB cam. I figured that I would make a tool to trim some fat off the EBBs for these racers. Every gram counts.
The Fisher EBB measures 56.5mm.
This is a picture of the Fisher EBB. It is designed like a giant quill stem. It weighs over 300 grams. That is some serious bullshit.
Generic EBB Weigh In
This EBB cam is from a Zion Single. It's pretty generic and will serve as a good test peice untill I get the actual units in hand.
189 Grams.
Making the Arbor
Machining the EBB
Final Weight
135 grams.
I could probably pull off another 10 grams, but I've done enough for now.
