helip on 19 in mini hydro

[a53hoop]

i found a set of drawings on a site i have since lost. this is a kneeler style 3 point boat and i have a ose mini outboard question is proper depth to mount motor. the other thing is with battery and speed esc placed fully forward i will need about 8oz balast in the nose to balance on rear of sponsons.where would be the correct cog on this type boat. tks AL

[NativePaul]

I don't know that specific boat, but the bottom of the strut level with the bottom of the sponsons, and CoG 10-15% of the afterplane behind the sponsons wouldn't be a bad place to start.

[a53hoop]

I don't know that specific boat, but the bottom of the strut level with the bottom of the sponsons, and CoG 10-15% of the afterplane behind the sponsons wouldn't be a bad place to start.

thanks for the help but bieng new to this not sure what afterplane behind the sponsons means.tks al

[NativePaul]

The afterplane is the area between the plaining surfaces, so the distance from the back of your sponsons to the prop, you typically want the CoG at 10-15% of that distance as measured from the back of the sponsons.
Untitled.jpg

[a53hoop]

thank you very much for your drawing and info. this should certainly help with my balance .tks AL