POWERPLAY J

[QUOTE=offshorexcursion;3940858]Still have not figured this one out.

So first I want to understand what forces the props have on the drives. For example. If the props are spinning out do they PUSH the props closer together which pulls the nose cones apart or...

Bingo. Turning out will push props together. Turning in will push props away.

Assuming your 36 is set up like most conventional V bottoms. Your props should turn out. You want your drives "toed in".

offshorexcursion

iTrader: (5)

Still confused

Pstorti thinks props spinning out spreads the props further apart (clockwise on the starboard drive, counter clockwise on the port drive)

PowerplayJ thinks props spinning out pushes the props closer together

????

No offense to anyone, I have read EVERY thread on this website and NONE of them say the same thing!!!! UGHH! LOL!

The only thing that 99% of users agree on is to toe in or out the measurement of 1/8th of an inch. Got that part down. I will set them at a 1/8th inch difference.

I have my own opinion but I want to hear what others think.

What force does the prop exert on a drive, does it make the drive go to the right or the left when spinning clockwise?

BenPerfected

Test 1/8" in, 1/8" out and then neutral in back to back test in flat water. The GPS will give you the answer and you won't care about "who's on first"....

bwd

iTrader: (1)

Go out and test. Start with them dead nuts straight. Go out and base line. Then turn in and out till you get the best speed. Bingo, Testing is the fun part.

pstorti

iTrader: (2)

That's not what I said i am talking about one prop on one drive so you get the concept of the force each prop exerts on the drive, once you grasp that then two props in or out are easier to understand. No offense to PowerplayJ but he is wrong it is opposite of what he wrote.

But really who cares Ben and bwd are right tinker around with it and see what happens, just make sure you do all 3 tests on the same day and in both directions.

offshorexcursion

iTrader: (5)

I agree that I need to try it each and every way for my personal boat

It would be nice for us all to come to a common understanding on the what, why, and how of this entire concept.

Does a RH rotation prop push the rear of the drive to the port or does it pull it to the starboard?

Does the water flow separation of a V-Bottom have any affect on drives

Etc etc.

Thanks for all the reply's so far.

Griff

If props spin out, then the leading edge/front of the drives should be 1/8" closer together than the propshaft centers.
Spinning out pushes the props together and the leading edges farther apart.

POWERPLAY J

That is exactly what I said. Are we both wrong?

raisingkane

You said out on both adjustment situations.

offshorexcursion

iTrader: (5)

My brain can understand how props spinning out can force the props closer together

I also can understand how props spinning out can pull the props apart.

to confuse us even more. I would think a surface style drive (Arneson, #6, NXT, Indy, M8, SCX-4) might be different because only the lower half of the prop is in the water.