servo question

[Shnegger]

Hi my name is Charles and I am new to the rc community. For my first build I am making a hybrid catamaran/air boat, powered by an e.d.f.

My question is about the lenght of the horn l on the servo and the rudder.

Here is my understanding: longer horn on servo=more travel but less force.
longer horn on the rudder = less travel and more force.

so using a short horn on the servo and a long horn on the rudder would give me the least amount of travel but the greatest force.

Are my assumptions correct ?

Thanks

 

[nino]

Yes. Don't know much about boats but in cars it's ideal to have the same length of horn and the sticky-out-thingy on the steering rack so they move in parallel. I guess it keeps the steering linear. Not sure if it applies to boats.

 

[Shnegger]

Yes. Don't know much about boats but in cars it's ideal to have the same length of horn and the sticky-out-thingy on the steering rack so they move in parallel. I guess it keeps the steering linear. Not sure if it applies to boats.

Thanks for your response nono

 

[9x19]

Welcome to RCT

 

[Lucifur10]

In my experience you want as much throw on the rudder as possible. I lost a sailboat due to lack of rudder. It just couldn't overcome the wind. Long horn will require a high torque servo as it is under a lot of load. Got any pictures? Sounds interesting.

 

[Lucifur10]

 

[nino]

Uhhh... That's a winch servo, a whole other thing. They turn indefinitely (aka don't have 120 or 180 or whatever degrees of motion). You need a standard surface servo. Hitec is a good brand otherwise.

*Edit: it has 3.5 full turns of motion so not infinite like a crawler winch but still not what you need

 

[Lucifur10]

Uhhh... That's a winch servo, a whole other thing. They turn indefinitely (aka don't have 120 or 180 or whatever degrees of motion). You need a standard surface servo. Hitec is a good brand otherwise.

*Edit: it has 3.5 full turns of motion so not infinite like a crawler winch but still not what you need

My mistake. Thought he was building a sailing catamaran. My regrets for "steering " in the wrong direction. Apologies.