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 studies have shown that postive feedback works better. Driver should get a shock until he obtains target lock, then it stops.
Performance incentive :^) - KenWittlief [more] |
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Here's a closer pic of the omniwheels we're using this year. They did amazingly at Chesapeake and with our treaded backwheels and chiapuas, allows for some amazing torque. The yellow stuff is 65 urethane; it's hard yet very sticky on the HDPE. The black is lexan. Thanks to the guys at BorgWarner who helped us make these.
Btw, stop by our pits in the Canadian Regional to test out your torque; 500lb load tester with digital readout.
Discussion
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29-01-2004 21:29
Alex Cormier
Re: pic: Team 639 Front Omniwheel
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Originally Posted by CD47-Bot
Thread created automatically to discuss this image in the Picture Gallery.
 |
30-01-2004 23:05
edomus
Re: pic: Team 639 Front Omniwheel
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Originally Posted by ElDiablo872
thats made out of lexan wow... how long did it last?
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31-01-2004 14:36
edomus
Re: pic: Team 639 Front Omniwheel
anyone else know where I can find roller similar to these?
31-01-2004 17:33
Yan Wang
Re: pic: Team 639 Front Omniwheel
To answer the above questions:
A pair of them lasted us through the Chesapeake and Canadian regional events. They were specially designed [by students] for last year's game to both stick very well on the HDPE and to clip onto the steel mesh of the ramp to provide extra traction 
The lexan was incredibly strong and the urethane was durable.
That urethane was provided for us by BorgWarner Automotive. Our head engineer brought sample material and we liked that version best. Then our staff of on-call machinists cut it. Have you ever cut urethane? It's about as hard as welding aluminium so we left it up to the pros. Even then it took a week before we got it back.
We may or may not be using omniwheels this year. But if so, then expect something interesting 
31-01-2004 17:44
GregT
Re: pic: Team 639 Front Omniwheel
Keep in mind that working with urethane isn't a simple task That wheel gave a machinist quite a headache.
31-01-2004 19:18
edomus
Re: pic: Team 639 Front Omniwheel
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Originally Posted by GregT
Keep in mind that working with urethane isn't a simple task
That wheel gave a machinist quite a headache. |
Do you think these were worth the effort?
31-01-2004 19:20
Yan Wang
Re: pic: Team 639 Front Omniwheel
Yes.
Er, that's me pretending to be the machinist who cut the urethane for us. The rest was relatively simple.
31-01-2004 23:52
edomus
Re: pic: Team 639 Front Omniwheel
when these ran did the metal touch the ground?
01-02-2004 01:15
Cory
Re: pic: Team 639 Front Omniwheel
No, the metal didnt touch, otherwise the wheel would have been illegal.
[edit] there isnt any metal on that wheel, barring the fasteners and the shafts the rollers run on. I think you're referring to the lexan, which doesnt touch.
01-02-2004 09:06
edomus
Re: pic: Team 639 Front Omniwheel
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Originally Posted by Cory
No, the metal didnt touch, otherwise the wheel would have been illegal.
[edit] there isnt any metal on that wheel, barring the fasteners and the shafts the rollers run on. I think you're referring to the lexan, which doesnt touch. |
Not last year it wouldnt have been. I saw a bot with entirely metal treads and they passed.
03-02-2004 13:53
Stu Bloom
Re: pic: Team 639 Front Omniwheel
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Originally Posted by edomus
Not last year it wouldnt have been. I saw a bot with entirely metal treads and they passed.
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| M17 - Robot wheels, tracks and other parts intended to provide traction on the playing field (“traction devices”) may be purchased or fabricated. In no case, will traction devices that damage the carpet or other playing surfaces be permitted. Traction devices may not have surface features such as metal or hard plastic studs, cleats or other attachments. The outer surface of off-the-shelf wheels may be modified by removing tread material only. In no case may a traction device protrude beyond the bottom surface of the Ramp mesh. |
Metal cleats and other attachments were allowed in previous years, but this rule was added to avoid field damage which had occurred in 2002.
07-05-2004 23:38
Andrew Schuetze
omni wheel hub research
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Originally Posted by CD47-Bot
Thread created automatically to discuss this image in the Picture Gallery.
Can you elaborate as to the hub which appears to be on the inside of the wheel? I notice two bolt holes. Do you have a metal hub bolted on the inside of the wheel which fits the keyed shaft you are using? APS Lead sponsor #499 San Antonio, Texas |
08-05-2004 21:36
Astronouth7303
Re: pic: Team 639 Front Omniwheel
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Originally Posted by Stu Bloom
From 2003 Competition documents - rule M17:
Quote:
Metal cleats and other attachments were allowed in previous years, but this rule was added to avoid field damage which had occurred in 2002. |
09-05-2004 12:02
Yan Wang
Re: omni wheel hub research
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Originally Posted by Andrew Schuetze
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09-05-2004 14:43
Cory
Re: pic: Team 639 Front Omniwheel
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Originally Posted by Astronouth7303
I believe that metal is refering to studs. a metal wheel would be permitted, assuming it wasn't blade-ish on the edge.
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Cory
19-05-2004 23:02
soezgg
Re: pic: Team 639 Front Omniwheel
Actually, the 'machinist' as we will call him, had to freeze the urethane to cut it nicely. Then he froze it again to drill the holes for the axles through it. Then, he placed each and every smaller urethane 'wheel' on a lathe and counterbored each side by hand, which took about 2 weeks, seeing as how urethane of that type is incredibly resistant to wear and extremely...squishy.
Good game.
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