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Unread 09-11-2008, 07:28
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Re: pic: 6 wheel suspension

Quote:
Originally Posted by rc_cola1323 View Post
Is there anyway to download that???

Currently, the only version available is through the website. I do have the flash program still if you have a circumstance that does not let you see the website.

-Gabe
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Unread 09-11-2008, 10:47
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Re: pic: 6 wheel suspension

To test how tight they have to be we will prop up the mecanums up with casters and than run with just the omni wheels. This should give us a good idea on the amount of slippage under pressure.

In studying drive system that teams have used through the years I have found that the mecanum system is the best except for the following items.
1. When going up ramps you must hit it square, but with this suspension you can hit it At an angle.
2. They are not great for pushing. With the added omni wheels it will give a little help (not a lot but some is better than none). We were in a match with our standard drive system and was up against a mecanum system and every time we tried to push and block them the just went around us like we were not their.

The good of the system out weighs the bad by a large amount. We have use omni drive in the past and are familiar with it but are just learning about the mecanum system and we need to know what to look out for with problems. Please let as know.
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Unread 09-11-2008, 11:42
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Re: pic: 6 wheel suspension

Are the two chassis sides linked (ie when one side articulates, does it carry the other with it)?
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Unread 09-11-2008, 13:25
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Re: pic: 6 wheel suspension

Drawings are at http://www.team1322.org/ideas.htm under "six wheel omni".

It is semi independent suspension on all wheels but the right is separate from the left. Because the frame attaches at the two point’s center of each drive half (between the omni and mecanum) the frame lifts about half of the front wheel rise. No springs are required, the weight of the robot should keep it all down. We may add springs later if needed. We are thinking that we could add pneumatic control to help with it, also use it to lift the front wheels to get up onto a step. The weight is approximately 25 lbs for each drive assembly.
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Unread 10-11-2008, 22:09
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Re: pic: 6 wheel suspension

Very cool, not technically a suspension, but a flexing chassis (the only reason why i say that is because I work on cars all day at College). Although it is the closest thing to a suspension right now FIRST wise (from what I have seen). That idea would of be ideal for 2006 and 2007, maybe even 2009 if there is some sort of steep incline.

Like i said very cool and should come in VERY handy in the future since FIRST likes to use rams in some aspects of the games in the past.
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Unread 11-11-2008, 03:19
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Re: pic: 6 wheel suspension

looks nice, although it might obstruct manipulator mounting. do you not need chain tensioners?
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Unread 13-11-2008, 18:22
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Re: pic: 6 wheel suspension

We have the sprockets and wraped the chain around them and worked out the distance. For the #35 chain it was 15in +/- 1/16. Doing this we do not need to tension the chain. Add a link than add 3/8 in, add two links add 3/4in.....

The game commin up will determin how we will attach the arms.
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