dddd
Joined: 11 Jan 2004
Posts: 3345
Location: NorCal7/10/14 8:45 AM |
The cross-section view of traditional aluminum frame joints shows extremely uneven stress distribution, so a lot of un-needed metal plus you have scary stress risers on the inside that need some of that extra metal to limit the peak stress points.
This method looks good.
In the motorcycle world, fine die-casting is replacing complex weldments and allowing ever-thinner walls on today's large-section aluminum frames and swingarms.
This Kirk Precision bicycle was one company's attempt at using cast magnesium for racing bike frames:
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