Chief Delphi - pic: Team Unlimited's Gear Shifter

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- - pic: Team Unlimited's Gear Shifter (http://www.chiefdelphi.com/forums/showthread.php?t=59735)

gdo	24-11-2007 11:31

pic: Team Unlimited's Gear Shifter

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WCRobotics

24-11-2007 11:32

Re: pic: Team Unlimited's Gear Shifter

What sensors are you using in the back of your robot?

fredliu168

24-11-2007 11:41

Re: pic: Team Unlimited's Gear Shifter

Quote:

Originally Posted by WCRobotics (Post 653379)

What sensors are you using in the back of your robot?

Pretty sure they are using optical shaft encoders to detect axle rotation.

basicxman

24-11-2007 11:50

Re: pic: Team Unlimited's Gear Shifter

how much vex do you guys have!?!?

WCRobotics

24-11-2007 13:05

Re: pic: Team Unlimited's Gear Shifter

Quote:

Originally Posted by fredliu168 (Post 653380)

Pretty sure they are using optical shaft encoders to detect axle rotation.

That's what I thought, just wondering if it had anything to do with stopping the motor that changes the gears.

Leav	13-12-2007 10:24

Re: pic: Team Unlimited's Gear Shifter

I think it would be best to use a real servo with a limited rotation and exact position for shifting the gear, instead of a motor...

all in all amazing design! very cool!

I really like how it shows the complex notion of gear changing in an easy to understand way...

-Leav

Akash Rastogi

13-12-2007 10:28

Re: pic: Team Unlimited's Gear Shifter

How did you guys get those three gears in the back flush against each other (cut off protruding edge or just different gears?)

Barry Bonzack

13-12-2007 13:39

Re: pic: Team Unlimited's Gear Shifter

Quote:

Originally Posted by XxMORTteam11xX (Post 658452)

How did you guys get those three gears in the back flush against each other (cut off protruding edge or just different gears?)

You got it, they would have had to grind down the edge.

11Mort11

23-12-2007 17:29

Re: pic: Team Unlimited's Gear Shifter

isnt that illegal

Barry Bonzack

23-12-2007 18:37

Re: pic: Team Unlimited's Gear Shifter

Quote:

Originally Posted by 11Mort11 (Post 663259)

isnt that illegal

Rule <R9> gives a list of which parts can not be modified, and other ways things can not be attached. Taking parts and modifying them is allowed, otherwise a team would not be allowed to cut metal.

GBIT	23-12-2007 22:30

Re: pic: Team Unlimited's Gear Shifter

that is cool,but do you guys have a problem with the gears grinding as you shift. or do you stop,then shift. Just wondering?

psyco_klown

25-12-2007 01:57

Re: pic: Team Unlimited's Gear Shifter

There design is shift on the fly but the can shift stationary. The rack and pinion make much it smoother. I dont know if you can see it or not they also beveled the gears with a drill and sandpaper.

GBIT	25-12-2007 10:24

Re: pic: Team Unlimited's Gear Shifter

o yea i see that now thanks.

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