if you want to go cheap than you con toy around with the speed govener (kind of like a rev. limeter) that should get you going pretty close.
Just play around with or completely remove the governor. Also, swap the engine pulley for a bigger one and put a smaller one for the transmission pulley. Do that and you'll be pretty close to 45mph
No if we are talking about the starter solenoid.
Approx. 45mph is the top speed of this machine.
45mph
45mph
45mph
it goes about 45mph
35mph- 45mph
45mph with no mods
It will at least go 45mph
40 seconds
Depends on what brand but about 45mph
2 minutes.