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-   -   Rookie Team 3111 Week 1 Robot. (http://www.chiefdelphi.com/forums/showthread.php?t=71812)

aziobro 10-01-2009 15:49

Rookie Team 3111 Week 1 Robot.
 
Videos of Team 3111 (Rookie Team)
Testing Week #1
Rear Wheel Drive Configuration

General Driver Tests
http://www.vimeo.com/2783542

Flat out Speed Test
http://www.vimeo.com/2783567

Slow Start Speed Test
http://www.vimeo.com/2783586

www.n13robot.org For More Team Information.

Based on Video it looks like rear wheel drive may be difficult with a trailer.
The drivers seem to get a handle on "drifting".

Akash Rastogi 10-01-2009 16:22

Re: Rookie Team 3111 Week 1 Robot.
 
Very nice! Excellent work for week 1.

Keep at it.

Jherbie53 10-01-2009 16:32

Re: Rookie Team 3111 Week 1 Robot.
 
It looks very nice. A tip I would like to add is you should try and power the front wheels as well. That will make it easier to from a dead stop.

Leav 10-01-2009 16:45

Re: Rookie Team 3111 Week 1 Robot.
 
Cool, you seem to have answered my "friction puzzle"! (showing that two powered wheels cannot overcome the friction of two stationary wheels) with your two wheel drive set up.

Just FYI, it is really a bad idea to leave wheels unpowered this year, since you are wasting normal force on non powered wheels.

the friction each wheel can produce is proportional to the weight on that wheel, but if you divide the weight between four wheels and only power two, you half the available friction! :ahh:

I'll be happy to clarify if I wasn't clear... let me know!

-Leav

Mike8519 10-01-2009 16:49

Re: Rookie Team 3111 Week 1 Robot.
 
Looks great for a first week test. Just power all those wheels :)

sdcantrell56 10-01-2009 18:04

Re: Rookie Team 3111 Week 1 Robot.
 
Yes you really should power all of the wheels. Right now you are losing approximately half of your available force. Also just a word of advice, regolith has much less friction than a floor like what you are driving on. We did tests yesterday and it takes about 25% longer to accelerate to the same speed on regolith versus linoleum.

Other then that, great job guys!! Have a driving robot early will be a huge part of this competition so good luck.

Cyberphil 10-01-2009 18:38

Re: Rookie Team 3111 Week 1 Robot.
 
Quote:

Originally Posted by Jherbie53 (Post 797798)
It looks very nice. A tip I would like to add is you should try and power the front wheels as well. That will make it easier to from a dead stop.

Yes very good, but that would help a huge amount. And its pretty simple to do also.

Ian Curtis 10-01-2009 20:05

Re: Rookie Team 3111 Week 1 Robot.
 
Nice! Week 1 our rookie year, we were still sitting at a white board. :yikes:

I'd highly recommend you get that trailer built and start driving with it. While it makes traditional driving more difficult, it seems that there are all sorts of nifty tricks to be picked up.

As everyone else said, be sure you power those wheels! Have you thought about your ball manipulator yet?

Hanna2325 10-01-2009 20:07

Re: Rookie Team 3111 Week 1 Robot.
 
Wow, thats really good! Keep it up!!:yikes:

Chris Fultz 10-01-2009 21:33

Re: Rookie Team 3111 Week 1 Robot.
 
great work team 3111!

good luck dueing your season - hope to see you in Atlanta!


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