One or Two Rudders for the MMP Rapid?

[Alfa Spirit]

That is the question, I don' t want to use turn fins, the hull is 39" long. If rudders are too long I can easy make them shorter. What do you think?

[iamandrew]

Not too sure, but i noticed that in the video from MMP, they run an Inline rudder, and it looks like no turn fins , and no stabilizers either

[Alfa Spirit]

Ladislav from MMProducts sent me an e-mail :

Hello Alain,
Your components looks very well ... www.mini-meca-rc.fr ? ... :-D. Trim flaps are not needed , important is the centre of gravity (trim flaps decreases speed). We use one rudder in the centre but our friend uses two rudders and driving characteristic is very good so. I recommend back plate on the stern - like as photos 10, 11 (higher collision durability).
You can find some inspire photos in the attachment.

Best Regards,

Ladislav

[iamandrew]

is the pic of the hull above the one you have actually received? hows the build quality of it?

[Alfa Spirit]

Hi iamandrew,
Yes, This is the one, quality is very good, the best I never seen. Just one thing is to adjust the height of the hatch but this is normal for me

[Alfa Spirit]

What is exactly the advantage of twin rudder setup? Less effect motor torque? Better stability when offshore turns?
I like the idea and the twin rudder look