Gruber
HobbyMasters
M.L. Toys
KidsWheels
Gruber
HobbyMasters
M.L. Toys
KidsWheels
HobbyMasters M.L. Toys
Gruber
KidsWheels
Have you added running lights? Headlamps? Perhaps some spinners?
By dannyk
#132184
A few years ago we bought our son Hanma 12v Hummer style powerwheels seconf hand. The battery was no good so i shoehorned a 12v car battery in its place under the bonnet. He ran it like this for a year or so, but it was getting tired, the wheels were done and the motors had that hot electrical smell about them!

I started looking at this site for ideas on how to fit some lawn tyres and potentialy upgrading the motors, this is when i the project started to snowball.....

I'll let the pcitres do the talking but it no consists of the following:

4 link rose jointed arms front and rear on a steel 'ladder' chassis.
Coilover type suspension with 120lb springs.
Mobility scooter rear axle (inc 24v motor), front hubs, ECU.
2 x 12v 70ah leasire batteries.
18x9.00-8 tyres.
Smart Car steering rack.
Side lights, head lights, 4 spots, rear amber flashing leds.
4 point harness.
Bonnet pins.
etc.

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I've also just aquired a 6v ( i think) Ranger rover powerwheels, a bit smaller than the Hanma. I also have another son so this is next on the list, but nothing as involved as the Hanma. Just battery, wheels and motor, probably another scooter.
#132185
Impressive! :D :D

Please post more detailed pics, especially how you mated a smart car steering to the powerwheels! :geek:
By dannyk
#132187
The steering was a nightmare. I had planned to use a 'monster' servo to overcome the issue created by the 4 link suspension, i.e use a wiper motor with a modified RC servo and servo tester. I bought all the kit wired it up but it was not sprong enough to turn the wheels fast enough. So back to the drawing board. I thought the easiest option was use a proper steering rack from a car, the smaller car i could think of was a Smart Car. the steering rack was using in conjuction with a UJ and sleave arrangement from a mk4 golf which i had lying about, the sleave allows for the 'up and down' movement of the suspension.
#132188
Is the rack mounted to the axle itself?
By dannyk
#132460
Its center go gravity is fairly low down due to the weight of the wheels/tyres. I only let him go over relitivly flat ground just now. A rollcage is in the plan, as is relocating the batterys lower in the chassis. Time is always against me!

I also have my own mk1 golf berg cup project going on, but the kids stuff seems to be priority, mostly due to there moaning! lol.

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