My son's A123 powered Powerwheel
 

Use to run 18-24V in my sons powerwheels. But charging them became a pain over time. I put in 6s1p A123 in there and he had a blast. 10s1p was just too much voltage for those poor motors. One run and you could smell them burn.

Here are the pics and Vid

http://i189.photobucket.com/albums/z...h_DSCF3708.jpg

http://i189.photobucket.com/albums/z...l/DSCF3707.jpg
http://i189.photobucket.com/albums/z...l/DSCF3709.jpg

Thats pretty amazing that little batteries like that can push a big plastic truck and a small child around so easily.

He used up about 2000mah after he was done/tired of "Bashing". Batteries were at ambient temps.

How long was the run? is it 1p or 2p?

:oops: Just saw that it's 1p...
BTW: Baller ass rig he's got.

I'll put the eagletree on it tomorrow. I'll see then how long he runs it for.

He had quite a few powerwheels before. People just throw them out and I pick them up for parts. They don''t last long when you start to double and triple the voltage.

Yup. I had one that I installed a gas motor on, then sold it at a garage sale for $30. Pity me, that was so fun!

My son and I did a 12 minute run onroad. Well I was biking beside him. Pulling around 3.8Amps average at 19.4V. Average was 73 watts with a peak of 1220Watts!

Check out the attached graph.
http://i189.photobucket.com/albums/z...6S1PONROAD.jpg

wow im inpressed

how big would a lipo have to be to handle a powerwheel

Thats awesome haha.

Semi Pro: the lipo would be smaller, they're a bit more energy dense than LiFe chemistry.

I let my son drive a few more times using the same 6s1p A123 pack on grass and concrete. Power usage went up a bit, but not by much. After the pack dumped, he asked to go faster, so I swapped in 7s1p A123's. He was content after that. The great thing is that I can charge these packs up in half an hour with my cheapo charger. Once I get my "better" charger, the charge time will drop down to 15 minutes. The great thing is, that after he is done driving around, I take the same packs and stick them in my RC's.

This is the on-offroad graph

http://i189.photobucket.com/albums/z...ON-OFFROAD.jpg



This is the onroad only 7s1p test.

http://i189.photobucket.com/albums/z...7S1PONROAD.jpg

Haha thats awesome. Have you thought about trying 2p for a bit more punch? at 77A theres quite a V drop.

naah, 1p is good as that is what it's averaging when he drives. I don't mind the voltage drop at all, as it "saves" those cheap plastic transmission/gearboxes which don't have clutches.

Lol good point. Still, I'd look into getting the drivetrain replaced with hardened steel machine bits, then you push some real power through it :lol:

Hey snellemin, one of those cheapo Chinese 4-wheelers from Traders Village would be an interesting setup. They would probably hold up to power a little better.

Only been there once for the VW "carshow" they had. Gonna hafta go again and look for those chinese 4 wheelers.

My son has 2 of the 12 volt John Deer Gator riding toys. They are made by Peg Perego. The stock motors are some kind of a 550 I believe. It goes really fast on 24 volts but the motors don't last long. :lol: I think a 775 brushed motor would do well in there. The motor mount holes would need to be enlarged to 1 1/8. I also eliminated the "shifter" that changes between reverse, 1st., and 2nd. gear.

cool, i dont know anything about a123 one of these days you guys will have to teach me

I've got some pretty good info in my FAQs I wrote for the traxxas forum noobs, worth scrolling down to the battery section and having a read.

Here is another clip of him tripping the circuit breaker and getting upset that it doesn't want to do wheelies. This one is on 7s1P A123

http://i189.photobucket.com/albums/z...h_DSCF3721.jpg

This is him driving around on the 7S1P A123.

http://i189.photobucket.com/albums/z...h_DSCF3727.jpg

Get some giant rubber bands to put around the tires! Needs a major dose of traction. Not sure if the rubberbands would work or not but that thing has some nasty push turning on the concrete and wouldn't hurt from some added traction to the back tires either! Now you just need to put a neu and a MMM in there and he could have some real fun!

you have to be the coolest dad ever


i have some 1/4 scale servos so im going to convert one for fun

Hehehhe thanks man.


Post your RC powerwheels when it's done.