Algodoo

hmmm try starting the engine the opposite direction... that should work smoothly

If you want that engine would work in another way you need to remake timing.
Or you can simply add one more circle that connects engine and collides with gear box.
If you want to make this engine less powerful just look at all lasers scripts and look for that would say:
acc=: 500 (It could be and not 500 dont remember well)
Just low dont that number, should work smooth on 250

how do you connect the axels? please answer me!!