Jan 03

The challenge with the bike rack is actually going to be to figure out the rear hub. We are going to need a tandem hub with a straight through axle, We need this to be sure that it will accept the load, and also so that we can extend the axle to accept the rack. I would recommend the DT Swiss 540 Tandem hub, which is available through many distributors including QBP.

Using the McMaster ball, and the model of a rear hub, I have constructed the geometry for a rack to hitch the lead and the trail bike together:

hitch1

hitch2

hitch3

hitch4

hitch5

hitch6Assuming that we can extend the hub axle by 3/4 inches on both sides, I think that this rack should work to join the 2 bikes together, without interfering with foot clearance for the rider of the lead bike.

Let me know what you think.

On another note, I am aware that I am running behind schedule, with this design. I would like to try and push through this week, so that George Reynolds can start the fabrication phase without leaving you guys in the lurch for your May ride. I should be able to dedicate myself to this project full time until January 9th if needed……. after that point production of the 2010 handcycle is going to be underway, and my time will become much more limited.

Please let me know if you have any feedback coments or concerns.

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