making a car powered by its own wheels (guide) | Forums

[rlmergeuser]

since someone said it would have helped them in their level i've decided to type this up for anyone who wants to give it a go. please be warned it is VERY difficult to keep the car in a straight line for a long distance, even with sliders.

this can make the car front, rear or 4 wheel drive. i havent tried front wheel drive, but when the car is rear wheel drive and you use multiple force rotations is will often do a wheelie, so i used 4 wheel drive.

instructions:

1. choose any wheel of the car and glue a dummy object right at the center of it.
2. align a fast rotation hinge to the center of the wheel, and glue one side of that to the dummy object
3. center another dummy object to the wheel, and glue that to the other side of the force rotation hinge.
4. if you want the car to be faster, keep on adding force rotation hinges connected to each other by dummies. i would reccomend you limit it to 3 fast hinges per wheel.
when you have decided you do not want any more hinges glue the last dummy object you used to the car (i usually glue it to the main body of the car, both doors, the bonnet and the boot for rigidity)
5. copy all of the dummy objects to the next wheel and center them to it
6. glue the dummy that is closest to the wheel to the wheel, and the dummy that is furthest from the wheel to all the parts of the car.
7. repeat this until all the wheels you want to be powered have the dummys and hinges attached in this way
8. glue all the dummies that have been glued to the main body of the car to each other.
9. turn physics on for everything

testing.
you'll want to check that all the wheels are turning in the right direction:

1. move the entire car (hinges, dummies and all) into the air
2. place a random object above the car, and glue it to the main body of the car.
3. make sure this random objects physics are off, but everything else's physics are on
4. press back to turn on the physics, and check that each wheel is turning the way you want it to.

5. if something isnt turning the right way, then select the hinge that is powering it, and turn it round 180 degrees so that the left side of the hinge is now on the right, and vice versa
do this for each hinge seperately
6. if one wheel is spinning more slowly than the other then you probably have one hinge in facing the wrong way... good luck with finding it.

7. once all the wheels are turning the right way, delete the random object ONLY (dont delete the whole car like i did once) and then place the car back where you want it.

have fun with your car. oh, and feel free to ask me any questions

[noobaroniNcheez]

Sweet tutorial, I always forget about using the dummy hinges.