pic: 35 MPH Prototype

[tkwetzel]

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

Originally Posted by some young guy

o man i thought the black tank was for the Nirtous Oxide...darnet that would have been cool

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 .

[KTorak]

This looks like something I would want to do in the summer in my free time. Yay for using math calculations to figure out speed We used the long equations mentioned so we could gear our robot for ~12-15 Ft/S this season But heck, 35 MPH is insane.

[Conor Ryan]

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.

[ConKbot of Doom]

In 2004 for some reason someone thought 4:1 would be a good ratio to gear down the CIMs to the 12" skyway wheels. The bot moved all right, but it sounded angry. ugh... that thing was hard enough to control with a 13:1 gear down, I would have hated to try to drive it at 4:1... 2 side wheels, and a castor at each corner...

Very nice to see something as just proof of concept.

[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

[KTorak]

Originally Posted by elknise

That would be cool, a 35mph bomb/rocket

Sounds Awesome, I want in on it!

[NoodleKnight]

I was wondering, how controllable is it at high speeds? How do you keep it driving straight, or do you just drive this in an open area? And most importantly, how fast does it accelerate from 0-35mph?

[sanddrag]

I have a Mabuchi RS 750SH motor (bigger than the FP but still maybe 1/2 size of CIM) sitting on my desk that I pulled out of an old Makita Drill. I was thinking I'd either build an RC car around it or put it in a car I have. How do you think I should gear that in a ~9lb car? How fast could I get it to go do you think?

[Crebb]

Originally Posted by NoodleKnight

I was wondering, how controllable is it at high speeds? How do you keep it driving straight, or do you just drive this in an open area? And most importantly, how fast does it accelerate from 0-35mph?

It's hard to control when it starts bouncing around on the pavement. There's only one caster on the front and it fell off after a while. Acceleration is pretty good in first gear, but when I put it into second it takes a while to get the rpm's up.
We like to use that big pneumatics tank on prototypes because it lasts so long. It was just sitting around in the shop, so I wouldn't be suprised if it was from 2000.

[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.

[henryBsick]

Its cool and all..... but when I see a robot: tipping the scales at over 130 lb,with battery and all; using only two CIM motors/side and no liquid nitrogen or any other cooling implement that can turn the motors into superconductors; and still do 35 miles an hour while using 40 amp breakers. WOW that is the day I shave my head.
But aside form that is it shiggidy shweet to say "I have a 35 mph robot!"

[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