Tandem Wing Hydro balance point

[Mathieu]

Hi all,

I'm building a 1:8 scale hydro with tandem wing design and I would like to get some advice regarding the balance point.

Here are some shots from the hull :



I'm not sure what motor I'll choose, but hte power will be provided by 8S2P 5000 40C lipo and ESC will be a 40.160WK.

So my main concern for now is : where should be set the balance point for this kind of design ?

The builder of the hull said to place it as forward as I can : from the end of the sponsons to up to 50mm in front of the end of the sponsons. I'm suprised because I always seen the balance point set between the end of the sponsons and the back off the hull.
I owned a H&M Lifter several years ago and I set the balance point to something like 5 or 15% (can't remenber exactly) of the afterplane, but the design of the 1:8 is not the same so I don't know if the same rule of thumb apply...

I'll certainly have more questions later when I'll begin the build.

Best regards.

Mathieu

[carlcisneros]

who makes that hull?

thanks

[Mathieu]

Hi carlcisneros,

The hull come from MPM : http://www.mpm-hydros.de/

Mathieu

[carlcisneros]

oh cool

will check it out

thanks