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Hey, SHIFT HAPPENS.... - David Kelly [more] |
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Isn't it nice when everything works out exactly as planned.
The second motor can't be seen in the actual picture because it is sticking through the 2x4 tube and inbetween the tank tracks.
Discussion
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09-03-2005 21:59
Max Lobovsky
Re: pic: Inventor to Reality
One cylinder for both gearboxes is pretty cool. What's the second plate near the output shaft for? Have any weights for the design?
09-03-2005 22:39
Rombus
Re: pic: Inventor to Reality
Can you explain how your using one cylinder to do the shifting? Also how many gears do you have?
10-03-2005 02:23
sanddrag
Re: pic: Inventor to Reality
Not to take away from the uploader of this image but I believe I can get a couple questions answered. The gearbox is a two speed. The two gearboxes are oriented such that (it's hard to see but lets just say) low gear is toward the outside of the robot and high gear is toward the inside of the robot. The gearboxes are mounted inline. The pneumatic cylinder is "floating" between them. The cylinder body is not on a fixes mount. The end of the body connects to the linkage on one gearbox while the end of the rod connects to the linkage on the other gearbox. When the cylinder extends, both gearboxes are pushed into low gear. When the cylinder retracts, bothe gearboxes are pulled into high gear. Hope this is accurate and helpful.
10-03-2005 04:26
Peter Matteson
Re: pic: Inventor to Reality
How effective is the one cyclinder shifting?
We toyed with the same idea last year but wimped out be cause we didn't want to go into gear one side before the before the other.
10-03-2005 07:48
Hunter
Re: pic: Inventor to Reality
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Originally Posted by sanddrag
The gearbox is a two speed. The two gearboxes are oriented such that (it's hard to see but lets just say) low gear is toward the outside of the robot and high gear is toward the inside of the robot. The gearboxes are mounted inline. The pneumatic cylinder is "floating" between them. The cylinder body is not on a fixes mount. The end of the body connects to the linkage on one gearbox while the end of the rod connects to the linkage on the other gearbox. When the cylinder extends, both gearboxes are pushed into low gear. When the cylinder retracts, bothe gearboxes are pulled into high gear. Hope this is accurate and helpful.
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10-03-2005 12:36
Hunter
Re: pic: Inventor to Reality
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Originally Posted by Max Lobovsky
One cylinder for both gearboxes is pretty cool. What's the second plate near the output shaft for? Have any weights for the design?
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Total it weghs 8.2 lbs with both motors and all the shifting mechanism and everything (except the cylider). And since there are tracks the output chaft from this drives the back pulley, all the reduction is done inside the trannsmission so there are no chains or any other form of reduction on the drivetrain.
11-03-2005 09:44
Andy Baker
Re: pic: Inventor to Reality
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Originally Posted by Dzdconfusd
How effective is the one cyclinder shifting?
We toyed with the same idea last year but wimped out be cause we didn't want to go into gear one side before the before the other. |
Andy
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