On surface drive mono I would advise offset the centreline of the strut to the right by 6mm. Martin had the idea, the prop because it leaves and re-enters the water creates a paddle effect, which pulls the stern to port, and the boat goes to the right. Known as prop walk. The offset thrust goes someway to balancing this out, though be aware that different props create different amounts of prop walk, and a good sharp prop is essential to reducing this.
As to height from tip of vee for the mono drive line height - build the model so you can adjust this, some props I use a centreline 13mm up from the tip of the vee and the same model with a different prop itr drops right down as low as I can get it. I do find the higher the strut the less prop walk and general prop effect, torque roll etc. Stands to reason really when you think about it.
Unloading the prop by lifting it can also sometimes improve performance by letting the motor get into a more efficient rev range, though all motors are different of course.
To your point on auto bailers and sinking, use them or don't, your choice, I have a hole in the transom to let water out, but whatever you do, ensure that you have enough flotation built in that the model will never sink, and test it with lead in the place of the engine and radio to prove it will not sink, there is little worse than the feeling of wondering if you have enough flotation in place as your stranded model gets lower in the water. Also check the radio box to ensure nothing gets in there when it is underwater.
Happy New Year to you too, and happy boating - what are you planning on building?
Glenn
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Topic: Strut Position (Read 2665 times)