"Regular" versus Lifter Prop

[Phoebe]

Guys,

I accidently ordered an Octura X445 instead of the M445. Is there much of a performance difference between the two styles?

BTW, this is my first post as a newbie. After 30 years of planes, helis, and cars I just bought a Revolt on a whim. I can't believe how addicted I've become in just a week!

[Todd Fleury]

The M445 is a detounged prop. If you want to really make your revolt perform, take the x445 and sharpen, balance, detounge and backcut the prop.

[tlandauer]

They ( M445 and X445) are not lifter props. As said above, the M445 is detounged, it unloads the motor a bit more than the X series so it may have an edge as far as top speed is concerned. The latter bites sooner and from a dead stop it gives better accel.

[Phoebe]

Thanks for the clarification. I understand how the drag caused by the tongue would decrease top end, but, being a newbie I have no frame of reference for how much.

I've searched all over unsuccessfully for detonguing guidelines, how much to remove, etc. Is it purely a hit or miss/experimental procedure or are there some rules of thumb?

[Fluid]

http://rcboat.com/prop.htm



.

[Phoebe]

Thanks, Fluid. I've seen that and it's pretty vague. Shows the general area but still leaves a lot to be desired. Guess I'll just start reprofiling and test the results...

[longballlumber]

Stick with what you have and work on getting the boat tuned in well. The difference you will see between the M445 and the X445 is minimal.

Later,
Mike