oldfrog

My Feedback: (1)

What type of servos are people using with weed wacker engines ?
I'm goofing around with a Ryobi/Homelite 30cc leaf blower engine
with an electric start. The throttle return spring sure is a stiff one.

1QwkSport2.5r

You would need a 1/4 scale servo for a gas engine. Get ready to shell out some $$$... This is one of the reasons I haven't gone gas powered.

I too have a homelite 30cc sitting here, but no real intention of putting it on an airboat.

Lester Burch

The servo that we uses is a HItec HS-645MG about $32.00.
Torque: 106.93 oz-in at 4.8V 133.31 oz-in at 6.0V
This is a good servo for the rudders to and there is a waterproof one now.

1QwkSport2.5r

I use these servos with my glow powered boats, but depending on the weight and size of the engine, I would use a higher torque servo for the rudders at the least. Hitec has a high voltage servo that will handle 7.4v. I think it puts out somewhere around 300oz/in or more at 7.4v.

I should have rephrased what I said before, I would use a standard sized high-torque servo for the throttle but 1/4 scale for the rudders if using air rudders. Wet rudders could probably get away with a standard size high-torque servo like the 645MG.

Lester Burch

I have used the ΒΌ scale servos on our !/4 scale Airboats for years and they work good but they have been overkill on some of the Airboats and the 645 has been a good way to go.

If you have the room the Hobbico CS- 80 works good for the rudders.

Thats All Folks

rangerfredbob

My Feedback: (13)

you only need a standard servo for throttle even if the return spring is left on (it should be left on)

I've been using a standard size high torque on my gas airboat, I think it's in the 120 or so ozin, need to get that thing back on the water...

dadkins

Standard servo for the throttle, 1/4 scale for the rudders, That would be the only way I would feel safe.