Re: Robot in 3 Days Robot Reveals
 

Even though it's completely impossible. I think It would be really cool to see these robots compete in an actual regional. It would be interesting to see how they size up against what everyone else builds this year.

Re: Robot in 3 Days Robot Reveals
 

No. I love it way too much to risk letting some high school kid drive it like he stole it ;-)

Joe J

Re: Robot in 3 Days Robot Reveals
 

haha.

Have you tried other materials for the intake system? A very popular sticky item back in 2010 was Dycem, I even pushed to use it on our floor intake last year.

Re: Robot in 3 Days Robot Reveals
 

Thanks Dan.

Would it be possible to provide a version of the Ri3D1.0 video with subtitles? Or maybe just a version with the background music completely muted when people are speaking? Their voices are muffled and I cannot understand what they are saying. Thank you.

Re: Robot in 3 Days Robot Reveals
 

Those are some pretty impressive robots. Is it true that nearly every team will be releasing their schematics and code for their robots? And if so anybody find any crucial flaws that would be difficult to overcome during a regional. I would love to talk through some of these designs with my team.

Re: Robot in 3 Days Robot Reveals
 

Dr Joe,

1) Can you also quickly comment on the Versa planetary gear ratio you used on the torro sticks and I'm thinking about ordering those today.

BTW, the motor/chain powered launch mechanism is leading me away from a winch/catapult style design for my team.

Regards,

Marc Center, FRC3548 coach

Re: Robot in 3 Days Robot Reveals
 

Dr Joe,

Out of curiosity, how did you fasten the "toro sticks" to the Versa planetary output shafts? What material are they?

Re: Robot in 3 Days Robot Reveals
 

Toro Horns. Schedule 80 PVC (thicker wall than Schedule 40). I heated up some 1/2" hex shaft and melted it in place so that a Versaplanetary shaft fits tight inside.

Very happy with the result.

Dr. Joe

Re: Robot in 3 Days Robot Reveals
 

The VersaPlanetary set up is this:

• Banebot 18V motor as input (crazy overkill but when you are building a robot in 3 days you use what you have in hand and once you find a thing that works, you don't change it unless you have to).
• 4:1 stage 1
• 5:1 stage 2
• 1/2 hex output.

I love the versaplanetary system. I think they are a huge help to teams prototyping because it is so easy to change the motor or the ratio or the output shaft. I've got no financial stake in the product or company, I recommend buying a boatload of ratios and output styles (1/2" hex and 1/2" round are my preference).

Calling 'em like I see 'em.

Dr. Joe

Re: Robot in 3 Days Robot Reveals
 

Dr Joe,

Thanks for your answer.

Sticky material (dycem?) from a previous post (Alex Cormier) found can be found at andymark here http://www.andymark.com/product-p/am-2454.htm

This may be a suitable substitute for the natural latex rubber product you used from McMaster-Carr, but needs testing for confirmation.

Regards,

Marc Center

Re: Robot in 3 Days Robot Reveals
 

I agree with Andy Grady on the judging show: El Torro will be the single most copied mechanism this year. To all the teams participating, good job, and thank you all for your time and effort.

Dr. Joe, if it's as planned, we may have a robot named after you (we have a tradition of naming robots after people) :)

Re: Robot in 3 Days Robot Reveals
 

Thanks for the feedback Either! We were dissappointed with the audio quality during that take, but did not notice it until editing. We will do our best to get some annotations in. In the mean time we will do a complete rundown of the robot. May be long and boring but we hope it to be informative. We have quite a few important features that need to be highlighted.

Thanks,

Dan

Re: Robot in 3 Days Robot Reveals
 

Thank you!

This does not sound the least bit boring to me! What you've described above will be an excellent teaching tool. It sounds somewhat like Joe Johnson's video, which was the most informative and helpful of the 4 posted.

Re: Robot in 3 Days Robot Reveals
 

Our team is working on a prototype of the catapult system used, our question is what are they using to pull back the arm on team JVN? What is the black material shown in the picture attached? :confused:

Re: Robot in 3 Days Robot Reveals
 

It is surgical tubing.

http://www.mcmaster.com/#surgical-tubing/=q6g64z