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Unread 26-02-2009, 22:38
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VEX Robotics Engineer
AKA: Arthur Dutra IV; NERD #18
FRC #0148 (Robowranglers)
Team Role: Engineer
 
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Re: pic: Macbooks aren't the only Unibody Construction

Quote:
Originally Posted by s_forbes View Post
Very nice gearboxes, compact and simple. I'm a little confused though... Isn't your robot finished already? Are these upgrade parts, or perhaps for another team?
A robot is never truly finished - there's always something that can be upgraded, something that to be designed better, faster, stronger.

In this case, these transmissions are going to replace two Globe motors currently powering our polycord elevator which brings balls up to the shooter. Don't get me wrong, the Globe motor powered elevator works just fine right now without any problems, but we can only fire about 2.5 balls/sec right now. With these new transmissions powered by a single FP motor, we'll be able to get 8-10 balls per second to our shooter, with a net change in robot weight of -0.9 pounds.

The three gearboxes include one for competition robot, one for practice robot, and one for a spare that will probably be assembled with a Lexan (as opposed to aluminum) cover to have in the pits to show people. The gears used in the transmission are from the first two stages in the KoP FP gearbox. I couldn't think of an elegant way to mount one of the KoP FP transmissions while outputting through the second cluster shaft with a cantilevered load, hence the design of this.

Previous revision: (on almost completed practice robot)


New revision:


And the outer plate (the pockets are on the inside of final assembly)
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Art Dutra IV
Robotics Engineer, VEX Robotics, Inc., a subsidiary of Innovation First International (IFI)
Robowranglers Team 148 | GUS Robotics Team 228 (Alumni) | Rho Beta Epsilon (Alumni) | @arthurdutra

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