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Unread 16-02-2008, 09:15
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Re: pic: 1519 robot as of last tuesday

Quote:
Originally Posted by Drwurm View Post
needs a flagholder

other than that, it'll be interesting how many laps you guys can fit in, good luck.
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Originally Posted by Rob View Post
I can't wait to see the flag holder in this one...I will really look like an RC car!

RAZ
Yeah, the flag holder is on the end of a fiberglass pole
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Unread 16-02-2008, 11:14
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Re: pic: 1519 robot as of last tuesday

Quote:
The RC Car should reach its max speed much more faster than a robot, due to its mass.
But most RC cars don't have two CIMs driving them. This robot is roughly 1/4 the weight of a "normal" FRC robot, and has half the power (From what I've seen, most teams use 4 CIMs). Thus, it has roughly twice the power-to-weight ratio of most robots, and probably accelerates quite nicely.
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Unread 16-02-2008, 14:36
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Re: pic: 1519 robot as of last tuesday

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Originally Posted by StevenB View Post
But most RC cars don't have two CIMs driving them. This robot is roughly 1/4 the weight of a "normal" FRC robot, and has half the power (From what I've seen, most teams use 4 CIMs). Thus, it has roughly twice the power-to-weight ratio of most robots, and probably accelerates quite nicely.
In terms of power to weight; CIMs aren't that great. I'm sure the RC car has a much better power to weight ratio than the robot. Also, that car went way faster than 20 fps. I'm calling shenanigans on the 6 fps lap.
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Unread 16-02-2008, 13:41
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Re: pic: 1519 robot as of last tuesday

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Originally Posted by Tapoore View Post
We'll be glad to get some video and pics for you tomorrow... I should be able to do that, but we still have to finish the final version of this bot as well as some other things...
Thank you so much! Of course we want you to finish your robot before you take time to shoot a video. We are scrambling ourselves to finish with only 3 days left! So exciting for our rookie team! Thank you for your efforts to help us learn.
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Unread 16-02-2008, 00:39
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Re: pic: 1519 robot as of last tuesday

Beauuuuutiful.

20 FPS like ours.
But I'm pretty sure you accelerate crazy fast.
And if that's an Ackerman Steering System,
Good luck to the rest of its class

I say, bravo for staying so weightless. We could only manage a 60 (with battery and bumpers). And you managing a 36 lb? That's just insane.

Bravo.

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Unread 16-02-2008, 00:49
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Re: pic: 1519 robot as of last tuesday

6 seconds per lap?

At kickoff, the driver of 330 with a very nice electric RC racing car (was it 1/18th scale?) that was much faster than 20 fps was taking 7-8 seconds per lap.....
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Unread 16-02-2008, 01:33
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Re: pic: 1519 robot as of last tuesday

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Originally Posted by AdamHeard View Post
6 seconds per lap?

At kickoff, the driver of 330 with a very nice electric RC racing car (was it 1/18th scale?) that was much faster than 20 fps was taking 7-8 seconds per lap.....
Shane having an electric racing car? That's like saying that my Aero Design planes use rubber bands! They're gas-powered, like his car. (Unless he got another one.)

And yeah, those racecars are faster than 20 fps max. If you can't beat the car, you can't have 6 second laps...
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Unread 16-02-2008, 01:38
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Re: pic: 1519 robot as of last tuesday

Do you drift it? That would make cornering a little faster.
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Unread 17-02-2008, 04:11
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Re: pic: 1519 robot as of last tuesday

I'd love a 20 fps akerman steering robot, but the traffic and low speed maneuverability is what concerned us. This robot looks fun to drive though.

Quote:
Originally Posted by AdamHeard View Post
6 seconds per lap?

At kickoff, the driver of 330 with a very nice electric RC racing car (was it 1/18th scale?) that was much faster than 20 fps was taking 7-8 seconds per lap.....
Quote:
Originally Posted by EricH View Post
Shane having an electric racing car? That's like saying that my Aero Design planes use rubber bands! They're gas-powered, like his car. (Unless he got another one.)

And yeah, those racecars are faster than 20 fps max. If you can't beat the car, you can't have 6 second laps...
It was an electric brushless 1/18th scale. I wouldn't run a gas one indoors

It's strange comparing the accelerations of the two, but for overall acceleration, the 1/18th RC will smoke the robot. The 1/18 will accelerate to 50 fps in about 2 or so seconds with decent traction. Off the line, a robot might snap ahead momentarily because of it's torq/traction advantage, but once the 1/18th gets going, it's gone. The surface at the kickoff was slick flooring, so I had drift the car around the corners always and couldn't build up any speed. That's why I was doing 7-8 second laps. And as a side note, that field mock-up at the kickoff was maybe half the size of a normal regulation field, which shows just how great the lack of traction was.

While it might seem that drifting is faster, in most situations I don't think that's true. You can carry quite a bit more speed through the corner if you can maintain consistent control and rely on static friction. You can change your acceleration vectors (when turning) quicker. It's partly why you don't see Formula One, Nascar, etc. running sideways. But with the traffic that there will be, it will be difficult to hold any speed through a corner.

Last edited by ShaneP : 17-02-2008 at 04:20.
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Unread 17-02-2008, 11:01
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Re: pic: 1519 robot as of last tuesday

I saw this at the BAE unveiling and it is AMAISING....... Nice job guys!!!!
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Unread 16-02-2008, 01:54
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Re: pic: 1519 robot as of last tuesday

If that's true then it should simply be a theoretical value.

The RC Car should reach its max speed much more faster than a robot, due to its mass.

But we'll just wait 'til we see the blur in the video
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Unread 16-02-2008, 02:05
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Re: pic: 1519 robot as of last tuesday

Team 190 was able to get consistent 6.5 second laps with a small electric RC car.
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Unread 17-02-2008, 15:27
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Re: pic: 1519 robot as of last tuesday

Where is your flag pole, you have to add a 51" tall flag pole!
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Unread 17-02-2008, 17:04
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Re: pic: 1519 robot as of last tuesday

For those of you who wanted video:
http://www.chiefdelphi.com/forums/sh...threadid=64389
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Unread 17-02-2008, 18:46
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Re: pic: 1519 robot as of last tuesday

from your demionsions it looks like you could actually fit into the front of our robot, if there was a collision, if a robot like yours gets stuck inside another robot, do you still get 2 points when we cross your finish line?
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