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Unread 16-12-2006, 00:38
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Andy Baker Andy Baker is offline
President, AndyMark, Inc.
FRC #3940 (CyberTooth)
Team Role: Engineer
 
Join Date: May 2001
Rookie Year: 1998
Location: Kokomo, Indiana
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Re: AndyMark aluminum omnis now online, plus a surprise

These omnis are a combination of the best aspects of the old Trick Wheel and the current plastic omni wheel.

The main advantage of these wheels is that they are repairable. If they do take a hit that would bend them, you can bend them back. If the impact is so hard that a screw falls out, then you can put in a longer screw and put on a nut... good to go. We had one 8" version at the Team Ford FIRST this past October with "Break me" written on one side... kids were jumping up and down on it and throwing it against the wall. It did bend (a bit) and one screw fell out. I was able to stand on it to bend it back, and the screw could be re-inserted.

The plastic omni wheel and this new aluminum omni wheel have the same molded rubber rollers that are so much better than the old extruded rollers we used on the Trick Wheels (those were inconsistently made).

This aluminum omni wheel has a 1/8" thick bore for a 1/2" id flange bearing (1.124" dia o.d.). There are two ring plates that capture the rollers which are also 1/8" thick. This thin framed bore may be not preferred to some folks, and they will go for the 1" wide bore of the plastic omni wheel.

Oh... and the plastic omni wheel has been improved also. The mold was changed to have a tighter fit for the 1/2" bearing, and the dowel for the rollers fits a bit looser, to reduce stress risers. Also, we are now using no fiberglass filler in the black polycarbonate (natural polycarb. has a higher Izod impact rating than 10% fiberglass filled polycarbonate... go figure).

The stickers were fun to design. There is a sticker manufacturer here in Kokomo who make the "Throttle Jockey" stickers for the moto-cross industry. They make all of our stickers, which have a clear laminate over the top of them so the print does not wear off.

Thanks for the comments... we'll keep workin on stuff.

Andy B.

Last edited by Andy Baker : 16-12-2006 at 00:41.
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