powellcrazy wrote:
Changing the gear ratio is similar to changing prop pitches.
I wouldn't want to change the gears unless you have found that to get proper RPM you are having to prop way up/down from where you want to be. Example: 15 to 21 pitch being the 'normal' pitch range to get the correct RPM at WOT. If you must install a prop with a pitch that would be out of this range to get RPM desired then consider regearing.
But you need to know that the tach is reading correctly, they are off some.
You really don't care what pitch prop your using vs. what is recommended from somewhere because most likely that was how to equip at sea level with a empty boat, no options, ect....
What you care about now, is getting the max rpm at WOT, with it today, loaded how you boat, where you boat. There are so many factors that effect performance; elevation, barometric pressure, humidity, weight in boat.
So true. I am thinking that being that I boat at 3600 feet or higher the majority of the time the gear ratio of 1.5 to 1 might be perfect for me. As soon as I can find out what is up with the tach I will get some proper numbers for us to disect.