Main Vertical Rail
1"x6" Aluminum
Viewed: 2244 times.
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Horizontal and Vertical Rails
Back view of the horizontal rail showing the lap joint.
Viewed: 2067 times.
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Main Rails Assembled
The 1/2" countersunk cap screws lock the joint.
The bottom bracket post hole is centered on the back edge of the veritical rail to make measuring chain stay length easier.
Viewed: 1974 times.
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Bottom Bracket Post and Collet Pieces
The tubing fitting on the right of the post is for argon purge
Viewed: 1929 times.
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Closeup of the Bottom Bracket Collet
When the bolt is tightened the tapered washers expand the collet and center the bottom bracket.
The washer is used to center 68mm BBs and is removed for 73mm BBs.
Viewed: 2156 times.
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Bottom Bracket Collet - View 2
Viewed: 1902 times.
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Bottom Bracket Collet Assembled
Viewed: 2218 times.
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BB Post and Seat Tube Rail
Viewed: 1962 times.
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BB Post and ST Rail Installed
The seat tube rail pivors on the bottom bracket.
Viewed: 2035 times.
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