Originally Posted by Greg Needel (Post 1509471)

It is really simple. Get a 12 volt drill with variable speed(old ones with burnt out motors are fine). Remove the motor, gearbox, chuck, etc. All you are left with is a handle with a switch and battery contacts. Wire your connector of choice to the output of the trigger (Where the motor used to be). That's it.


The advantage of this is you get the right voltage (assuming a 12 volt battery), variability in speed that is easy to control, and reversibility (without removing the wires.

Originally Posted by IKE (Post 1509524)

Be warned, the really cheap ones can "burn up". did this with some $10 specials. It worked really well for a while then fried itself.

Thanks for the reminder that I need to make a couple new ones.

Originally Posted by jkelleyrtp (Post 1509528)

I'm interested in learning a bit more about shooters as our team hasn't had to do anything with flywheels just yet. The wheel selection was well presented, but I just don't understand 254's robot in 2014 could fire the balls with a shooter! Considering the speeds and torques the 2012 motors ran out, it boggles me that the yoga balls could be fired with significant speed. Allen, do you have any resources pertaining to the deeper physics involved with shooters?

Originally Posted by AllenGregoryIV (Post 1509469)

Lot of teams use them, they are very easy to build. Just open up a 12v drill (118 uses 18volt drills sometimes but that's a bit risky with some motors) and remove the motor. Connect the wiries to Anderson connectors or some other quick dissconnects. This allows you to change the speed and direction of whatever motor connects to it.

We use a small makita 12 volt drill that we broke the chuck off of and a cheap 12 volt model from Walmart that we bought specifically to use for that purpose.

Originally Posted by arc25565 (Post 1510488)

Does anyone know where I can get the power point that they used in the video as it had some great info. It was a great episode and I learned a lot, thanks!

Originally Posted by AllenGregoryIV (Post 1509532)

The Poofs do a great job of explaining their development process each year. Their build blog and technical binder are available on their website.

One suggestion is to go back and read some of the early season threads from previous shooter games. Each year we as a community learn a bit more.
2013 small wheel linear shooter design for example.

Another suggestion is the behind the design series. The 2006 book is getting hard to find but it's a great read.

The Fighting Pi posted some great Behind the Design articles for a variety of awesome 2012 robots.

Originally Posted by Mike Marandola (Post 1510489)

Originally Posted by arc25565 (Post 1510488)

Does anyone know where I can get the power point that they used in the video as it had some great info. It was a great episode and I learned a lot, thanks!

Originally Posted by topgun (Post 1510526)

I just reviewed the video again. Lucien mentioned a "magic rubber strip tape". What is that and what is it used for? Any links to where to buy it?

Thanks.

Originally Posted by ahartnet (Post 1510533)

Not from 118, but can confirm that it's linerless electrical rubber tape. I took a picture of it to remember what it was when I was talking to them once, because I knew magic tape wasn't going to help me find it later.

Originally Posted by AdamHeard (Post 1510534)

Rescue Tape?
http://www.rescuetape.com/

Originally Posted by ahartnet (Post 1510537)

The picture I took specifically says it's rubber tape and not silicone. I can't imagine you'd need the high temp resistance (or the cost) that would go with the silicone tape.