my racing motor does 50
Maybe you can, it depent what weights is the go kart...
Very carefully.
The Razor Ground Force electric go kart has an electric rechargeable motor. Instead of using gasoline and a battery similar to a car's set up, the go kart only requires a battery.
Nope but you can win a go kart by doing every go kart race at the carnival and town
depends on motor and traction.
50 mph
Put a 12 hp motor on it.
Due to the inefficiencies in solar panel technology you likely could not create a direct feed go-kart which feeds solar power direct to an electrical motor to drive the kart. You would need to have solar panels set up to charge batteries and those batteries would then drive an electrical motor in a go kart.
A 3HP motor can reach speeds up to at least 30 mph depending on what you are using it for.
Usually a motor from a lawn mower, chainsaw or skidoo.
Honda makes consistently well-reviewed go-kart engines such as the GX120 and GX160. You can buy them at Northern Tool or Google these engines for other stores.