Water has little gravitational power in phun or algodoo. Use water pressure to force the cog around. By forcing water down one thin pipe then round the cog your car will gain more power and speed.
I found the water generator a while back while browsing through the Japanese stuff and forgot who it was by . My water engine two is better than this as it doesn't use any motor after starting but this is just for demonstration purposes.
Despite my strong Capitalist views i will join you on this, most scenes on algodoo are just silly light shows. Back in the times of Phun REAL scenes were made! Who are they to restrict Algodoo to the people who buy software like this when basically the same software was given away by the same developers months earlier! What we need is an all out REVOLUTION!
I'm sorry for raining on your parade and it's hypocritical because I’ve tried the same thing and done so badly I didn't dare upload it (it was nothing compared to this) but:
-The electrons would be invisibly small compared to the protons/neutrons you've displayed
-The electrons would be a lot further away
-The electrons would be in a series of shells (3 to be precise)