Step 1: Fixtures

The rear axle is higher than he front. A 24 inch wheel (that will give you an effectively lower gear) is one inch lower than the 26 inch.

For the second bike I will be using a fixture for the bottom brackets that will help keep the two halves of the frame straight, when clamped together for tack welding.

These hold devices should be mounted on a metal flat bar at least 5-1/2 inches wide x ¼ to 1/5 inch thick. Do not trust wood to be square and straight.

A frame jig of 1/2 inch steel plate would be very nice to have.

<p>I wish I had one of these.</p>
<p>I wish some bicycle company like Sun bicycles would make them. But it takes years to get them interested in a new concept. Just look at ow long it took for the Extra-cycle. Now several company make them. Write them letters.</p><p>see more bicycles of the future here <a href="http://commutercycling.blogspot.com/2011/08/ultimate-utility-bike.html" rel="nofollow">http://commutercycling.blogspot.com/2011/08/ultimate-utility-bike.html</a></p><p>and ask these people how much they would charge to build one <a href="http://hpm.catoregon.org/" rel="nofollow">http://hpm.catoregon.org/</a></p><p>I would make them my self, but no one would be willing to pay $3000 for the parts and labor.</p>
<p>I could build the frame for about $800... I will have to do some math.</p>
<p>Looks like about $500 worth of parts plus labor and wheels etc.</p>

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Bio: Read my non-profit blog about 'Utility Cycling Technology' I am the Professor! (Prodromal)
More by Prodromal the professor:How to build an Ergonomic Cycle Truck 
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