Single motor cat strut/drive

[properchopper]

Peter,

Funny you mention that - Not long ago a customer of mine told me that I measured his CG the wrong way; that the 33% starting point rule of thumb was measured 1/3 or 33% of the wetted sponson area. Technically CG deals with weight-or gravitational pull if you will ;
thus if 33- 1/3 % " CG " is the amount behind the "CG" point the - entire-boat needs to be used to calculate this. Of course I have heard compelling counterpoint but if there was no differences in opinion there'd be no horse racing

I'm thinking that you may find that your boat loosens up Also going from 6S 5000 x 2 to 4S 5000 x 2 will loosen things up as well. Drop in a TP Power 4060 & prop up

[Peter A]

Peter,

Funny you mention that - Not long ago a customer of mine told me that I measured his CG the wrong way; that the 33% starting point rule of thumb was measured 1/3 or 33% of the wetted sponson area. Technically CG deals with weight-or gravitational pull if you will ;
thus if 33- 1/3 % " CG " is the amount behind the "CG" point the - entire-boat needs to be used to calculate this. Of course I have heard compelling counterpoint but if there was no differences in opinion there'd be no horse racing

I'm thinking that you may find that your boat loosens up Also going from 6S 5000 x 2 to 4S 5000 x 2 will loosen things up as well. Drop in a TP Power 4060 & prop up

It is going to end up with 2 x 4s 3000mah in parallel as our class rules allow for 6000mah max, so I dunno about a 4060 at this point.. I was reworking the cg last night and to get it back to 11" from the transom may require some lead. I will try it as I can with the current batts, the cg goes back to under 10 1/2" with the batts all the way back.

[properchopper]

Peter,

I'm sure you'll find the right combo

Sometimes 'tho it takes a little trial and error - lol

20211108_104351.jpg

[Peter A]

Getting better. Ran on Saturday with cg moved back and it was much better. First run was with an M445, was ok, then I tried a Dr Props 642/3 but changed to a cnc 444 which went really well.
Still really sensitive in the turns with a tendency to hook, as tunnels are prone to do. I have just ordered a speedmaster inline skeg strut rudder. I am preferring the inline rudder. Hope to have the parts and install them for another test in a couple of weeks. Got a few more props to test on it yet to find the "sweet spot".

[properchopper]

Sounds good - will keep looking for the results

[TallyFeli]

Hi....there is next to no fill to do, and I have as of now supported the whole internal body with carbon-kevlar material. Didnt need it yet I love the appearance of the dark/red material and the additional support will be extraordinary with my qd engine, adds weight yes yet I dont race, and the general apperance is wonderful. Besides I have an incredible boat painter to do all the completion work and the custom paint!