***Skunkworks Cat Owners thread TIPS / TRICKS / PICS / SET UPS and SIMILAR HULLS***

[Heath M]

Raise the front of the strut up another mm, and keep the back flat on the table. Or as i did use 2 credit cards as packers to stick under the front to set the angle. The rudder looks very long too, might be worth cutting 1/2 inch off the bottom of it.
Hope this helps.

[domwilson]

The height looks good. If you still have the porpoise issue, try this adjustment in 1 degree increments. I would try the strut parallet with the angle of the last step of the sponson. Like this pic...

[exotica]

Very nice boat but there is no washer the strut and drive dog? Try to find PEEK VICTREX washer (graphite + carbon + teflon + bronze) those are very good and more stronger than PTFE

...thanks for the info Alfa, however this is not a square drive therefore as I have been informed a washer is not required. I did have one there but took Heaths advice and removed it as it did appear to be causing drag and heating up the drive line. Now that it has been removed the driveline does not heat up and I get no grease or water spinning up into the hull.

[exotica]

...Heath and Dom, you two have been a great help I must say and thank you for. One says go up 1deg and and the other says go down 1deg LOL. Im going to try both settings next time im out, hopefully this coming weekend again. Looks like ive got some fine tuning infront of me next time I hit the water.

Now to help me understand a little clearer, if there is some mild chop its better to have the strut angled down so the hull is running a little wetter and to help the hull tackle wake, and in really calm flat water have the strut parallel with the sponsons or 1deg up?

[domwilson]

...Heath and Dom, you two have been a great help I must say and thank you for. One says go up 1deg and and the other says go down 1deg LOL. Im going to try both settings next time im out, hopefully this coming weekend again. Looks like ive got some fine tuning infront of me next time I hit the water.

Now to help me understand a little clearer, if there is some mild chop its better to have the strut angled down so the hull is running a little wetter and to help the hull tackle wake, and in really calm flat water have the strut parallel with the sponsons or 1deg up?

I think Heath and I are saying essentially the same thing. He says to raise the front of the strut and I say lower the back. Basically were saying that the prop should point slightly negative....

http://www.modelpowerboat.com/forum/article/attitude.htm

[exotica]

...now that makes sence and thanks for posting that pic.

"Now to help me understand a little clearer, if there is chop is better to have more negative angle so the hull is running wetter, and in really flat water have the strut parallel or slightly more positive?

[domwilson]

Once you get the strut angle set where the bow is not up, I think it will handle chop just fine. But you'll have to experiment as I could be wrong.

[domwilson]

You may want to check out that link.

[exotica]

...thanks mate, there is some great reading there and thanks for the link. It sure has cleared up some more thoughts I had going on in my head.

[Heath M]

so instead of lowering the prop end of the strut like the picture shows, keep that level with the sponsons and raise the front of the strut to the desired angle about 3mm higher than the back.

[Heath M]

Here`s how mine looks

[exotica]

...im understanding what needs to be done but I dont think I have the adjustment in the strut to be able to do that. I would have to modify the key way in the strut to give me the flexability to make an adjustment like that. I think I can only move my strut up and down but I will go and check it out. The way it seems possible now is if I bend the stuffing tube a little to give me that negative angle in the strut.

Im also in the middle of a work through I will post shortly on the modification of the Mystery 200a ESC to keep it a great deal cooler under harder loads and im almost finished doing it.

[exotica]

...got it sorted guys. I removed the bolt from the strut and applied a little pressure to the stuffing tube. The back of the strut sits up approx 2mm and the front is still level with the bottom of the back sponsons. Ill get to test this set up on the weekend and ill get some more vid and pics.

[exotica]

...had another chance to run her over the weekend. I made the adjustments as suggested by my fellow FE'ers and thanks to Fluid, the hull has overcome the bouncing. I started the strut at level with the back of the sponsons and have now ended up approx 4mm lower. I was unable to get video and have also installed the Hydra 120 back into her. Still running the x445prop she ran beautifully and a consistent 75kph.

My temp guage arrived today, my new 2s 5500mah 35C are due tommorow and still waiting on my x640 which will be sharpened and balanced so im curious to see just how well this prop performs. Based on the FECalc it should give me a little more speed and not be so demanding on the Hydra.

I also found that if I power her up gradually the boucing dissappears. If I punch her into WOT right from the word go, she is not as stable on plane. Guess there is also some artistry in the driving. Ill get some more video this weekend with the new prop, lipos and Hydra.

Happy that she is running a very consistent 75kph on 4S1P. Im thinking about trying her on a 6S set up for a minute or so, just to see what she will do. I will have to run the Mystery 200amp ESC with the X440, which should give me in theory 128amp current draw and a speed of56mph. Is it okay to demand the 9xl to spin at 35k rpm???

[exotica]

...just came across this on you-tube. Im not going blind im 100% confident this is the hull I now own. If anyone know this person can you please put them intouch with me.

This looks like its screaming.....LOL

take a look at the video HERE.