Next on the list of factors is pressure. When you increase the surrounding pressure, you can usually dissolve more gases in the liquid. Think about your soda can. It is able to keep the fizz inside, because the contents of the can are under higher pressure.
Assuming a prop, it depends on how you are propped but with a redline of 6000 rpm, most outboards perform best with a cruise in the 4000-4400 rpm range. If you want top fuel economy, get a floscan or such and see what is the most efficient for your engine and prop.
This is taking into account that youâve got the right treadmill for the amount of exercise you do. Ideally, if you run on a treadmill the motorâs RPMs should be lower than 4000; if youâre a walker, the RPMs should be under 5000. Motors that spin faster than this are bound to overheat and youâre just asking for trouble.his is taking into account that youâve got the right treadmill for the amount of exercise you do. Ideally, if you run on a treadmill the motorâs RPMs should be lower than 4000; if youâre a walker, the RPMs should be under 5000. Motors that spin faster than this are bound to overheat and youâre just asking for trouble.