Algodoo

i have been doing some googling to find out how a transmission works i have been searching for around 3 hours now not kidding at like 6 speed autos but cant find anything until about an hour ago i found a simple little lego transmission and i thought it was the coolest thing anyways it starts out running out so all you have to do is grab the gear knob and screw with 2 gears!!! P.S. like all my other stuff that i make everything is a bit faulty well this trans dose not really change that failing traditon if you know what i mean oh and slide the knob for the gears REALLY GENTLY thanks for reading!!