Showing posts with label Section 4: Material Assemblies. Show all posts
Showing posts with label Section 4: Material Assemblies. Show all posts

Saturday, April 12, 2008

Trailer Hitch / Tarp Pole

OK, I think I've got the hitch/pole figured out. Imagine a telescoping pole with three sailboat halyards installed inside.

Of note:
-it extends from 1.5m (hitch mode) to 2.5m (max tarp mode) in 10cm increments
-it rotates on one axis at the cart end and on three axes at the bike end, eliminating the jacknife feature of the first prototype (thanks Adrian!)
-in hitch mode, the hook can be tightened down, eliminating the rattle feature of the first prototype. the new design also eliminates the pin that held the hook in place, which was both awkward and sketchy.
-the rope is 1/4" braided nylon - strong enough to hold a large sailboat sail up.
-aluminum would be ideal, and hopefully not too expensive.
-each cart would need a 100mm x 100mm x 5mm plate installed in front of the rotating wheel pivot, and on top wherever poles might go.
-in pole mode, there are three equalized ropes - one for the tarp (with a hook that can accommodate several grommets when the tarp is folded) and two to attach to the ground (a block, a fence, a stake)

Whaddya think?











Friday, April 11, 2008

Thanks to Smokey and Dave at the Community Bicycle Network!

We'd like to thank the Community Bicycle Network, especially Smokey and Dave, for their generous donations. Bicycle parts are an integral part of our mobile kitchen design, and we'd be lost without their time, their expertise, their patience and their facilities.

Thanks to Jack and Howard at Solway Metal Sales!

We'd like to thank Jack and Howard Bettel, brothers and co-owners of Solway Metal Sales, for their generous donations. Jack gave us a large quantity of 1-1/4" square-section steel for free, and Howard gave us access to his salvage yard and let us take anything we could find, also for free. These materials will be employed in our kitchen cart.

Thanks to George and Theresa at Canvas Specialty Company!

We'd like to thank George Dolik and Theresa from Canvas Specialty Company for their generous donations. They provided us with an enormous quantity of canvas end cuts for free. This material will be employed in our triangular tarp.

Wednesday, April 9, 2008

Tuesday, April 8, 2008

table cart

The table cart has been slightly altered. The new design features 'trainging wheels' on the corners of a box truss that is now the main support for the long tables (see image 2). These wheels will be on adjustable mounts that can be easily lowered to provide a stable table when deployed. The rear wheels will now be able to fully rotate to accommodate the different modes of travel. This will require that they are also equipped with a device to lock them into 'travel mode'.