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-   -   mecanum wheel intake test (http://www.chiefdelphi.com/forums/showthread.php?t=143007)

Caleb Sykes 01-02-2016 21:19

mecanum wheel intake test
 
I haven't seen any videos yet of mecanum wheel intakes, so I thought I would share our test from last week.

https://www.youtube.com/channel/UCFU...M-n0wSA/videos

We have improved our bumper "mount" since then. ;)

asid61 01-02-2016 21:40

Re: mecanum wheel intake test
 
Holy smokes! We might just add some of those to our bot now. :P

jamesmcip 01-02-2016 21:56

Re: mecanum wheel intake test
 
Wow! That is actually really ingenious. Is there any issues when pushing the ball out of the robot as the mecanum wheels will be forcing the ball out to either side?

TimTheGreat 01-02-2016 22:08

Re: mecanum wheel intake test
 
Why mecanum? It seems like you could do this with any wheels. What is the advantage?

asid61 01-02-2016 22:14

Re: mecanum wheel intake test
 
Quote:

Originally Posted by TimTheGreat (Post 1533695)
Why mecanum? It seems like you could do this with any wheels. What is the advantage?

They have a component of motion that direct the ball to the cutout, which regular wheels do not have.

Kevin Sevcik 01-02-2016 22:23

Re: mecanum wheel intake test
 
Quote:

Originally Posted by TimTheGreat (Post 1533695)
Why mecanum? It seems like you could do this with any wheels. What is the advantage?

Watch closer. It scoots the ball sideways along the bumper before feeding it into the cutout.

dodar 01-02-2016 22:27

Re: mecanum wheel intake test
 
Look back at 180 in 2014 and 179* in Recycle Rush. Both used mecanum in their gatherers and worked amazingly.

*Used on their can claw

Mike dennis 01-02-2016 22:40

Re: mecanum wheel intake test
 
Quote:

Originally Posted by dodar (Post 1533703)
Look back at 180 in 2012 and 179* in Recycle Rush. Both used mecanum in their gatherers and worked amazingly.

*Used on their can claw

180 used them in 2014. The 2012 World Championship robot was a simple piece of PVC pipe painted red.

dodar 01-02-2016 22:41

Re: mecanum wheel intake test
 
Quote:

Originally Posted by Mike dennis (Post 1533706)
180 used them in 2014. The 2012 World Championship robot was a simple piece of PVC pipe painted red.

You are correct. Got the years mixed up.

Hadi379 01-02-2016 22:42

Re: mecanum wheel intake test
 
1986 in 2014 comes to mind

Caleb Sykes 01-02-2016 23:03

Re: mecanum wheel intake test
 
Quote:

Originally Posted by jamesmcip (Post 1533690)
Wow! That is actually really ingenious. Is there any issues when pushing the ball out of the robot as the mecanum wheels will be forcing the ball out to either side?

As long as our wheels are equally spaced, we have never had any problems shooting the ball straight out.

bEdhEd 01-02-2016 23:56

Re: mecanum wheel intake test
 
Quote:

Originally Posted by TimTheGreat (Post 1533695)
Why mecanum? It seems like you could do this with any wheels. What is the advantage?

Linear motion parallel to the rotation axis of the wheel. This is the advantage that these wheels give.

NinjaMunkeeNao 02-02-2016 00:27

Re: mecanum wheel intake test
 
Cool! Good job guys!

gurellia53 02-02-2016 15:32

Re: mecanum wheel intake test
 
What is your spacing between mecanum wheels? We are finding some dead zones if we space them out too much.

Here's a picture from a few days ago. I'll try to get a video the next time we run it.

Also, we are heavily considering printing hubs and using the purchased Vex rollers... It will bring down the cost a lot but not sure how this will hold up at competition.

mrnoble 02-02-2016 16:07

Re: mecanum wheel intake test
 
1619 used these in 2014 as well. I know other teams did too; I mention 1619 since their 2014 robot has inspired about half of our design for this year (including the intake).


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