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 Post subject: Powerwheelz Racing
PostPosted: Wed Jul 13, 2011 9:44 pm 
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Location: Minneapolis, MN
Here are the first couple of components of the powerwheels racing series build.

The donor Vehicle is a 1990 jeep powerwheels with metal frame and upgraded twin motor/gearbox wheels and has been converted to 12 volt.

Attachment:
File comment: Donor jeep
jeep.jpg
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The rear transaxle is from an old craftsman riding lawnmower. 3 speed w/ reverse. Its belt drive and belt slip clutched. So converting it to DC will be a snap. Its limited slip differental, so it should corner well under power. Need a new rubber shifter cover so everything doesnt get greasy. Oh and the transaxle even has a mechanical brake!

Attachment:
File comment: craftsman transaxle
transaxle.jpg
transaxle.jpg [ 43.89 KiB | Viewed 679 times ]


Front steering is from "some mower". Wheels need cleaned up, but came with the steering bars and the rims rotate freely.

Attachment:
wheels.jpg
wheels.jpg [ 36.28 KiB | Viewed 679 times ]


Once the donor DC motor is found, The belt hub on the transaxle can be sized up or down to the motor. I am thinking a hub half that size to get some speed out of it.

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 Post subject: Re: Powerwheelz Racing
PostPosted: Thu Jul 14, 2011 6:49 am 
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AWESOME! Now make a rockin' TC Maker theme design for that puppy!

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 Post subject: Re: Powerwheelz Racing
PostPosted: Thu Jul 14, 2011 9:38 am 
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I'd like to see us enter a vehicle or several in a Power Racing race... we should start planning now!

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 Post subject: Re: Powerwheelz Racing
PostPosted: Thu Jul 14, 2011 7:48 pm 
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I am going to work on the frame for the powerwheels racer this Sat (7/16). Little back story, a bunch of us are heading to Detroit Makers Faire this month. One of the events is a power wheels racing series sponsored by i3Detroit. Dave and I decided to enter a racer and started procuring parts. Budget is $500 Max. I think we have a contender with the trans-axle If we can get enough speed out of it. I think we can if we can keep the weight down and the RPM up.

If anyone wants to lend a hand PM me. (full disclosure, it will be hot and we need a full rolling chassis by Sunday to keep the build schedule moving, so no welding demos)

Also will be making a steel run to Discount Steel in the early AM Sat to pick up steel. May take the boat cuz I can stack 24' stock in it, where I can't in my trucks 5' bed. So if you want to come along PM me and we can cut yours down for easier transport with my chop saw.

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 Post subject: Re: Powerwheelz Racing
PostPosted: Thu Jul 14, 2011 7:59 pm 
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Yo, SwinkyD, where'd you get the Power Wheels Jeep?

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 Post subject: Powerwheelz Racing
PostPosted: Thu Jul 14, 2011 8:46 pm 
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Dunno if it has enough tork, but I have an electric lawn mower I can donate to the cause.

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 Post subject: Re: Powerwheelz Racing
PostPosted: Thu Jul 14, 2011 9:43 pm 
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cgallaty wrote:
Dunno if it has enough tork, but I have an electric lawn mower I can donate to the cause.


Hmm, It could! Has to be DC under 36V. Looking for a high RPM motor in either 12 or 24 volt and that might fit the bill.

Can you give me some specs on it so I can research it? A lot can be fine tuned to the drive assemblies with the right size belt hubs.

36v is the max in the rules, but I would like to keep the weight down to 1 or 2 12v batteries to keep the chassis light.

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 Post subject: Re: Powerwheelz Racing
PostPosted: Thu Jul 14, 2011 9:50 pm 
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wammie wrote:
Yo, SwinkyD, where'd you get the Power Wheels Jeep?


This wonderful thing called craigslist :)
The people I got it from had modded it for their son. upgraded motor/gearbox and such. My goal is to preserve those mods and original frame/wheels. I am going to make a new frame so I just use the body without destroying the original chassis mod. The gears in it are actually kinda sought after in the power wheel community from my understanding.

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 Post subject: Re: Powerwheelz Racing
PostPosted: Thu Jul 14, 2011 10:34 pm 
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Damn,

That's awesome, you don't mess around when you're collecting parts, so treadmill motors are out due to voltage what else works, golf carts perhaps, wheel chair / cart things? I to have a 12V lawnmower, but I need it awhile longer.

Pete


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 Post subject: Re: Powerwheelz Racing
PostPosted: Fri Jul 15, 2011 8:04 am 
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Ha, only have 12 days to build a rock star power wheels. So a man on a mission ;)

Sliding over to ax-man at lunch today to look for brackets and some springs to fabricate a belt tightener (clutch).

Couple things I am still looking for:
- variable speed control for DC motor that can handle some serious juice. (12-24 volt 50 amp+ kind of thing)
- DC motor 12-24V hi speed, love something in the 2hp range.

The transaxle can take +10hp, I plan to use a smaller belt hub on the axle or larger motor hub to bring the rpms up.

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