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Unread 25-06-2010, 09:59
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Re: Drive Train Prototype

Quote:
Originally Posted by Hawiian Cadder
how much does that weigh?
I currently weighs around 90 pounds with everything on it. It's pretty ridiculous, but we didn't really worry about weight when designing it this time around. The frame members are pretty much all 80/20 and we didn't put lightening holes in any of the other plates, so I imagine the weight could drop quite a bit. Weight will probably be one of the next big considerations in this design.

Quote:
Originally Posted by GarrettF2395
Is there a reason as to why you decided to have the mechanums on the outside instead of the inside?
Did you guys play around with any other configuration ideas, such as having all 8 of the wheels on the ground at once?
We put the mecanum wheels on the outside because we thought those would be the primary driving wheels, and then the traction wheels would be used in a pushing match or a similar situation. And if a robot with a relatively high center of gravity is moving quickly on mecanum and switching directions, it is much more stable to have the wheels on the outside.

We thought about different things you could do with all 8 wheels on the ground, but it seems like you don't gain a lot with that because you lose both your traction and maneuverability.

Quote:
Originally Posted by Alan Anderson
Does it spin in place well? It looks like the mecanum wheels might need to be swapped.
We haven't had any problems with the mecanum drive spinning or strafing. I believe our wheels are on in the correct orientation. Unfortunately, we've already made the mistake of putting them in the wrong spot once this year, so we wouldn't want to mess up again .

Thanks for all the compliments, and if you have any other questions or comments, please post them.

Last edited by nitbaj : 25-06-2010 at 10:52. Reason: Answering Another Question
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