Step 2: Steer Tube Extension

The first thing to do is find a BMX front fork with a about 1.3 inches of rake or more. Then add and extension using an angle bar to hold it in place. You can buy threaded steer tube if you don’t want to use a thread-less head set. Cut the threads to fit the stack height.

But if you need a disc brake on the front, it would be much easier to buy a Recumbent bike disc fork off eBay and insert an extension. Better to use a rim brake for emergency only on the front, and use a really good disc brake on the rear. Hydraulic if your going to haul really heavy cargo down steep hills!

Steer tube 1 inch OD x .834” ID x .083” wall (use thread less headsets or buy a threaded steer tube )

Head tube 1- 3/8th OD x 1.185” ID x .095” wall


Steer tube 1- 1/8th inch OD x .955” ID x .095” wall

Head tube 1-1/2” OD x 1.334” ID x .083” wall

<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>

About This Instructable




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 
Add instructable to: