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Unread 28-10-2008, 20:05
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Re: pic: Concept 8wd Drivetrain

Quote:
Originally Posted by Cory View Post
This is also true of any direct drive to the center wheel 6wd robot.

I'm always curious why so many people cite the desire to have a robot that can continue driving through multiple chain/sprocket/etc failures. In the hundreds of matches my teams have competed through, as well as our collaborative partners, I have only ever witnessed two chains break-in both cases it was a sprocket failure.

If your drivetrain is well designed and the chains are properly tensioned, the odds of losing a chain, let alone more than one chain are nearly negligible.
I do agree with you and in fact with all of the teams I have been a part of, I have never had a chain break. The first year we had multiple chains come off of sprockets, but ever actually had one break. I guess I am always worrisome and because of this like to design redundancy into the system. I do agree though it is probably unnecessary as long as the chain is properly aligned and tensioned there is really a very minimal chance of breaking, even with #25 chain.
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