pic: 35 MPH Prototype

[sirbleedsalot]

Originally Posted by tkwetzel

Is it FIRST legal? I am assuming not because of the air tank you used.



Electric motors....nitrous oxide? They would get more power out of putting NOS stickers on their bot than actually putting a nitrous tank on it. Because all the NOS tank would do would be weigh down the bot .

Hey some of our team members decided it would be funny to put NOS stickers on our robot, so we have NOS.

[Mr. Ivey]

Really James, don't let the resource officer find out about that,the speed limit on that road is 25 mph. You could get a ticket. Just think if you were given a speeding ticket for breaking the speed limit with a robot!

[NoodleKnight]

Originally Posted by tkwetzel

Electric motors....nitrous oxide? They would get more power out of putting NOS stickers on their bot than actually putting a nitrous tank on it. Because all the NOS tank would do would be weigh down the bot .

Or they could just open a large dump valve to spray the nitrous backwards, kinda like using a fire extinguisher to create propulsion, I mean, with a full tank, it'll be some high compression there.

Or use it to fuel a rocket engine! Just a matter of heating the stuff right.

[elknise]

Originally Posted by NoodleKnight

Or they could just open a large dump valve to spray the nitrous backwards, kinda like using a fire extinguisher to create propulsion, I mean, with a full tank, it'll be some high compression there.

Or use it to fuel a rocket engine! Just a matter of heating the stuff right.

That would be cool, a 35mph bomb/rocket

[tkwetzel]

Originally Posted by cdr1122334455

try a bigger battery, like 24 volts. That may change some stuff. Also you may want to impliment a cooling system if you haven't already.

Cooling system? With it being as open as it is and running at 30+ MPH, I think they should get enough air flow to sufficiently cool everything.

[some young guy]

Originally Posted by NoodleKnight

Originally Posted by tkwetzel
Electric motors....nitrous oxide? They would get more power out of putting NOS stickers on their bot than actually putting a nitrous tank on it. Because all the NOS tank would do would be weigh down the bot .Or they could just open a large dump valve to spray the nitrous backwards, kinda like using a fire extinguisher to create propulsion, I mean, with a full tank, it'll be some high compression there.

Or use it to fuel a rocket engine! Just a matter of heating the stuff right.

what i was thinking was maybe get some sick nitrous perg nozels, 4 of them in the corners facing up. hit that botton and see the perge come out.... o it would be insane

[Adam Krajewski]

Originally Posted by tkwetzel

Is it FIRST legal? I am assuming not because of the air tank you used.

That tank looks familiar... I believe it was actually in the kit of parts way back in 2000.

[Jeff Waegelin]

Originally Posted by Adam Krajewski

That tank looks familiar... I believe it was actually in the kit of parts way back in 2000.

I think you're right about that, Adam. That was the first thing I thought when I saw the tank, too.

[Anthony Kesich]

Originally Posted by tkwetzel

Electric motors....nitrous oxide? They would get more power out of putting NOS stickers on their bot than actually putting a nitrous tank on it. Because all the NOS tank would do would be weigh down the bot .

I don't know. If they really wanted to they could rig up some sort of nozzle and an igniter. Jet powered robot anyone?

[Joe Menassa]

Originally Posted by Crebb

We did have trouble tripping the breakers. The first time we tried it out we only had one CIM per gearbox, but we added two more. The road we tested on had a slight hill, so if we started off in first gear and shifted into second it did fine. As for the football field in 6 seconds, it would be close. I need to find a radar gun somewhere.
I admit that it isn't practical and we wont use this setup on our robot next year (most likely), but it sure is fun.

Radar gun? Does anyone have a license? Just drive along side it in a car! JK! (-NOT SAFE-)

Back in high school a few friends and I attempted something similar with very minimal success.

Good job.

[Frank(Aflak)]

Originally Posted by M. Krass

That is approximately the CIM motors free speed. The motors are operating under load, so the actual output RPM is going to be something far lower than that. Additionally, if you're using the FIRST provided circuit breakers, the motors will draw more than 40A under load at a speed considerably lower than 5200 RPM, were they ever to go that fast.

If your robot were traveling 35 MPH, it'd be able to cross a football field in six seconds. Can it?

if you have efficient gearboxes the motor should be able to get fairly close to its rated freespeed.

it'll just take a while to get there, but the only resistive forces it would need to overcome would be innefficiency in the gearbox and wind resistance.