20-04-2013 11:37

Richard Wallace

Re: pic: GoKarts! - BurnoutChibi

OK this is cool. I really liked the author's description (toward the end) of how he burned the motors and then rewound them.

BTW, that steering thingy resembles an old school lug wrench, and looks like a good way to impale oneself in the event of sudden deceleration.

20-04-2013 12:57

Travis Hoffman

Re: pic: GoKarts! - BurnoutChibi

I see the GoPro mount - looking forward to those vids.

20-04-2013 13:06

mman1506

Re: pic: GoKarts! - BurnoutChibi

How are the vex transmissions holding up? I have a few large outrunners laying around and It looks like it would be fun to modify one of are test bots with outrunners.

20-04-2013 13:07

Akash Rastogi

Re: pic: GoKarts! - BurnoutChibi

Small small world. I think I met Charles when he came to a regional up here with a MORT alum who he is friends with at MIT. Learned that Charles also knew Sean Cantrell (who at the time was with 1771).

Love seeing how FIRSTers all know each other

20-04-2013 13:41

Mk.32

Re: pic: GoKarts! - BurnoutChibi

Well the problem with cheap chinese motors is they do explode now and then... Those brushless motors are about $40 each and 4x as power dense as a cim, each one can pull about 2000 watts.

He has other goPRO video on his other carts on his site, and video of this one should come once things settle down in boston.

So far the vex gearboxes seem to be doing fine, I like the cable shifter idea instead of using pneumatics. The motors he used already had an 8mm shaft, so he just milled in 2mm key way and machined an adapter plate.

Oh awesome Akash small world indeed.

20-04-2013 13:53

mman1506

Re: pic: GoKarts! - BurnoutChibi

Thanks, have you guys looked at the simonK firmware for brushless ESC's? It allows you to add RC style forward/brake/reverse to Airplane ESC's. I have had some good results using the firmware on some small brushless vehicles. It also seems to reduce some cogging over the stock firmware and allows for more advanced configuration.

20-04-2013 16:51

Mk.32

Re: pic: GoKarts! - BurnoutChibi

The steering "wheel" is actually an 3/4 hex Kurt Vice speed handle from ebay I believe... and that defiantly seems possible...

20-04-2013 17:01

GBK

Re: pic: GoKarts! - BurnoutChibi

This looks like way too much fun. I would have to go for a steering wheel, or a handle bar. Looks like something we should be racing in the parking lot after pits close..

20-04-2013 17:18

Mk.32

Re: pic: GoKarts! - BurnoutChibi

Well they kinda do, in the parking lots of Maker Fairs. http://www.powerracingseries.org/ I don't believe this kart is race legal (PPPRS has a $500 budget/no LiPO rule).

20-04-2013 20:14

AlexH

Re: pic: GoKarts! - BurnoutChibi

http://www.youtube.com/watch?v=uN2G1BEsnU0

video of it


the lack of epic skidmarks makes me sad...

09-05-2013 16:31

martin417

Re: pic: GoKarts! - BurnoutChibi

Perhaps Charles was being too modest. Charles was the reason that 1771 existed. When he was a junior at North Gwinnett HS, he heard about FIRST and decided to form a team at North. He lobbied administration, begged a teacher to be a sponsor, found a build space at another school that already had a team, found a few other students to be on the team and started it all. With no mentors, no money and no experience. Charles was already at MIT when I joined 1771, but he was the genesis of the team, and it grew from the roots he created.