Rookie Team needs help with D-Link and arm design

[simon911011]

We have decided to build a small arm that is capable of picking up the tubes for teammates to score and maybe even scoring in the autonomous round. However, we are not sure of which motor(s) to use for the arm. We are considering the DC motor that came in the Tetrix box or the window motor. Which one would be the better for the arm?

[Alan Anderson]

Originally Posted by simon911011

We are considering the DC motor that came in the Tetrix box or the window motor. Which one would be the better for the arm?

The window motor wins by default, because the Tetrix motor is only legal for use on the MINIBOT.

[Hawiian Cadder]

the window motors are your best bet, one reason is that you can put one on both sides of any kind of tower you have, this will make it less likely that you need further gear reduction. for a very basic arm i would recommend 2 window motors, the black plastic hubs that come in the kit fit on their default output gear, and they are unlikely to give you problems with back-driving.

[eedoga]

FIRST of all, the fact that your team found this forum is really good. Our team didn't find it until our second year out, and we would have been so much better off if we had seen it our first year!

I couldn't get to the youtube video you posted, so I'm not sure how helpful this will be.

Team 2980 has gone completely open source. We would be happy to share our CAD files as well as any pictures or information on how we are building our robot in order to help other teams, especially rookies.

Here is a link to our thread.

We will also be posting tutorials on our robot over the next week. Especially relevant is how we mounted the windshield washer motor.

There are pictures showing how to make this on the above mentioned thread.

Finally the connectors for the window washer motors. Another person posted a link to where to get them on this forum. The website is www.mouser.com and the product number is 829-12129487. That is for the plastic shell. There are also little metal pins that you have to put in there. 12129493. The total cost for these connectors will run you about $2 a piece.

If you have any questions feel free to contact us via PM.

Edoga