The formula that works best only applies to the small newer normally aspirated (carburetor) 4 cycle engines. The ratios change slightly worse with altitude and slightly better with fuel injection and tuning. Most American mowers and the newer 4 cycle outboard motors fit into one of these two formulas:Typical new carbureted engine well tuned:1 x HP per each 25 ccFuel injected:1 x HP per each 22 ccNotes:Most engines are tuned down to a lower HP for better engine life.It is common for the same cc engine to be built in 3 different HP versions with the highest rated being the maximized HP per cc version. That is how you see price and HP changes on the same cc engine made by the same company.Some of the newest (2008 and newer) engines from Japan perform slightly better.A typical 150cc motor should equate to between 3.5 - 6 HP+ depending on tuning with 5 HP being the adv.The actual formula plots as a curve and not linear but does not apply to Max/High Performance engines like motorcycles.
Doesn't work like that. 15 hp is the power of the motor, but the speed you get from 15 hp would depend on how hard it is to push the boat through the water. 15 hp on a canoe would be scary fast while 15 hp on a barge won't do a thing.
Superheated steam, which comes as a result of burning fuel such as coal or using nuclear fuel. This is steam which has been heated to a temperature above the waters normal boiling temperature, so has a high pressure to enable it to drive a turbine.
Depends upon the voltage. At 110 volts, 800 watts = 7.27 amps. At 115 volts, 800 watts = 6.96 amps. At 120 volts, 800 watts = 6.67 amps. At 220 volts, 800 watts = 3.64 amps. Just divide the wattage by the voltage to determine the amperage. (You can also divide the wattage by the amperage to determine the voltage!)
hp
50:1
50:1
50:1
20/1
The 7.5 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
50-1
50:1
50:1
The 2.5 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
50:1
50:1 gas to oil ratio
A 3.3 hp Mercury outboard for 2007, requires a 50:1 fuel to oil mix. This is roughly 1 pint of 2 cycle oil, to 6 gallons of fuel.