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Unread 29-04-2014, 14:53
Abhishek R Abhishek R is offline
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FRC #0624
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Location: Texas
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Re: Butterfly/ octocanum drives

Quote:
Originally Posted by JesseK View Post
I had a great opportunity to talk to a couple of people on your team about your drive train, including manufacturing and maintenance. The insight was invaluable. If we decide to do it next year and improve upon it, we'll definitely send you a heads up with any of our new findings. From what I saw it was the best blend of simplicity, maneuverability and immovability. Who knew it was based upon a concept that was put out 3 years ago by the Killer Bees?

The only thing about the whitepaper I don't quite understand is the 'elastic tensioning'. Could you explain?
Quote:
Originally Posted by gotgreen
Apologies that it was not clear. The shifting bearing block is loose on the frame and has to be tensioned. Theraband is connected to the top of the shift plate where the pneumatic cylinder is attached and tensioned to the frame vertically. This seats the bearing block lower lip into the frame when the wheels are up. Also, when pivoting the blocks the chain is loose when up and tight when lowered. Ideally the pivot point should be moved out to reduce this issue. A small piece of theraband can be connected to the bottom of the block and tensioned to the frame. We are not using this. We just attached a small tensioner and it is working fine. The drivetrain complete w/o electronics is right around 30 pounds.
Here you go. And thanks, it was an experiment for us and it turned out pretty well.
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