Great day at the lake ,need to figure out torque roll

[petej]

More stable (possible sacrifice of speed), push bow down by lowering strut/prop. For mono hulls this reduces chine-walk. For cats, it could reduce blow-over.
Raise strut/prop to get hull out of water (less stable).

[kfxguy]

So bigger motor turning a bigger prop is not the answer,I'll try a 642 that just came in ,see if I can hit that ragged edge speed ,I'll adjust the strut back up ,but that seems to make it less stable ,don't really know why except maybe less boat is in the water ,I'm going out Saturday with my cat and a spartan ,finally got my flex shaft ,one problem is the rudder grabs long toolies floating in the water and once they grab on it won't turn anymore ,these trail about 3' out,gotta drive pro active and turn away from the dock ,these trailers have put me into the rocks a couple of times ,lots of hull repaire ,but can't wait to hit the water ,thanks for the tips ,

I had a single Daytona. Same hull as a genesis. With a bit of tuning mine was very stable. It does not like the prop in the water. It likes a m445, m545 and m646 (if you have the power). Like stated above you'll need to do some mods and get the strut up about .200 off the table. Here's a video of it while I'm tuning it in.

[MG1234]

Thanks for the tip that will definatly save me some time ,I assume MM adjustments are all it takes ?

[kfxguy]

Thanks for the tip that will definatly save me some time ,I assume MM adjustments are all it takes ?

It is sensitive to changes but .200" off the table will get you very close.

[SD Eracer]

A narrow cat with a single drive on is going to have torque roll when taking off, especially when taking off hard.

On my Genesis, when I was running a 4082 1600kv on 6S with a X642, I could make the boat rollover upside down with a single pull of the throttle. Now that I am running an even torquier 4092 1730kv on 6S, I can sometimes do a full 360 barrel roll!

I run a M445 prop now, and learned how to apply the throttle easier when taking off to reduce the torque roll. Once the boat is on plane, I can apply the throttle fully. Even then, you need to keep an eye on anything that can disrupt the boat's balance and jump off the throttle immediately. Even running across the wake I made earlier can induce the boat to torque roll.

I run that Genesis with a neutral strut and a air dam on the front to reduce blowover.

As for boat recover, I make sure to keep the boat within distance of my trusty fishing pole & tennis ball.

[MG1234]

Thanks for the tips ,I did a home made air dam under mine ,I assume an M prop is to run 1/2 out of the water? Just like real boats ,

[SD Eracer]

Thanks for the tips ,I did a home made air dam under mine ,I assume an M prop is to run 1/2 out of the water? Just like real boats ,

Here is my airdam, it's the UL-1 carbon fiber airdam sold by Kintec. Just cut to fit and use outdoor double sided tape. It has been on there for 1/2 the year running exclusively in saltwater, no issues with it coming off.

As for the prop, not sure how much of it is out of the water. My OSE 3/16 strut is flush with the strut mount, neutral position if that helps. In the picture below, that's when it was about 1mm down, it now flush, but I wanted you to see what I was talking about.


Airdam

Air Dam.jpg

Air Dam 2.jpg

Strut Position

[MG1234]

Thanks for the tips ,I did a home made air dam under mine ,I assume an M prop is to run 1/2 out of the water? Just like real boats ,

[MG1234]

Great pics ,what does the M on an M445 mean? I have regular 445 props ,

[SD Eracer]

Great pics ,what does the M on an M445 mean? I have regular 445 props ,

The "M" Octura props are the "X" version of the prop that have had their ears removed. This helps unload the motor, reduces the torque at lower speeds.

It states on the front of the prop what type it is, either an X445 or M445.

[MG1234]

KFX guy that's one cool vid ,I'm inspired now ,