Arneson, NXT or #6 / Single 24' Eliminator ?Anyone have success running the NXT as a Single on a Cat
24' Eliminator is the boat is Question

It was rigged with a #6 / 1.30 Gear
1" above the bottom
Big Block Turbo about 1,200 HP
Porpoises pretty bad in the 40-mph range
Day 2 of testing with a 4-blade transom picked up and kicked over a tad about 90 mph



Feel free to banter and the end of the day myself & some friends are trying to help
where the cards have already been laid.



What we are told at this point is
Bad gear choice / again card that was delt
Told (x) should be 4" above the bottom not 1"
Told that a single #6 will never work on a cat?

Not real excited about Bravo or IMCO options, respect to all of them
Just inviting more maintenance for the individual is not the plan.




(I / we) do not have much insight on the NXT's
But I'm told they like to run (in) the water, rather than surface?
It's built stronger than the (bravo) type drives in my humble opinion

As far as bolting right on in its current Height 1" above the bottom
Thoughts on.. Is it a better drive for single engine Cat?
Will it help & clean up any of the current challenges already listed with the #6?

Thank you for any and all insight / Goal is to move forward



Thank you
Cougarman

As long as we are playing with someone else's money, slap a M8 on there it's shorter.

I had the same thought, then I called Eliminator & they mentioned they typically need to run the #8 one inch higher than a #6 due to the bullet size on the #8

Eliminator also mentioned the #8 is heavier than the #6

i would ask the waterski racers from down under they run crazy power and one or two drives up to 140mph towing 2 skiers they really rock and get thru a river with lots of turns

Agreed... however the Australians are running V-bottom's not cats.

But they do have some awesome Rigs

I don't think an NXT would hold up to that much HP.

I think a 1.5 would be better, however as you said card that was dealt. I would think that by messing with props you would be able to do more with what you have, try both 3 and 5 blades as well as diff rakes and diameters to see if you can maximize the things you already have.

Any thoughts on good ole Arnesons for a 24 cat?

This is a 25 Talon
Not sure what the last hull is

What was causing the poirpoising at 40mph? Were you able to correct it with drive trim or how much tab?

What's unique witj a single engine Cat is the clean water it runs through, undisurbed or getting cleaned up by the hull.

The water comes up from the hull's transom shear point, and rises up at an angle dependamt on the hull speed. With the drive in the middle, you have to determine where you want the propshaft in the water.

The #6 may need to be higher than +1" above hull, effectily ventilate the prop. It would help if you setup a Gopro or something to observe how the water contacts the drive. Adjust from there.

Not sure on porpoise cause yet.
only tested twice.

Currently looking for different props to see if transom lift can be reduced or eliminated. Before any other adjustments are made.

It was pushing the bow down & never reached a point of packing enough air to carry it through.

Instead it picked the transom up & side stepped