Has anyone tried using the 9402 servos for a 60 size heli? Futaba does not list them for heli use, but they have a great torque and speed just wondering why they don't list for heli use?

I have used them on the tail, worked good for me. My listing off of Futaba's website lists them as " air, heli, off, on, gas, boat"......Coop

iam useing the 9402 on my r-30 w/401 gyro ,it has a death grip on the tail.

The 9402 is not the best servo for a helicopter. The futaba 9252 digital servo is probably better and the price is probably not too much different.

Digital servos are more precise and have better holding power. The analog servos have all their torque at the end of the rotation as where digitals have a more distributed amount of torque with location. Metal gears are not ideal for helicopters because they wear faster, but they don't strip as easily. A servo gear in a heli is not likely to strip even though it can happen. Digitals drain more power. If you read the correct specs on the servo on 4.8 volts it should be around the same as the 9252.

That servo can be used for anything, but it is costly.

Da_man.......agreed, but I'm using 9402's in my Fury Extreme without issues. I got them cheap and are new the specs of a 9252.

I don't know why they wouldn't work. I use 9205s in my 60 helis and yours have more torque. They are a little slower, but not much. They are not shown as heli servos, but I don't see why they wouldn't work. They seem to have higher specs than the 9205 in most cases.

I was thinking the same as with the specs on them pretty close to the 9252's I asked because I have a few fairly new that I was going to use instead of forking out for the new digitals at least for a little while anyway till I get some digitals

I have used them for the past five years on 30,s and 60,s. I have never had a problem with any of them. Just as steady as a rock. I wish you well and many happy landings

First of all, the 9402's are a bit heavier than most high-torque servos. The reason why they aren't so popular in helis is because the metal gears tend to develop slop very quickly unlike similar others that have nylon gears.

On planks, unless we're talking about a super high speed plane such as a Q500 or so, it doesn't really matter (at least for most of us) a .25mm play in the rudder or ailerons ... in a ccpm heli that would be the difference between perfectly vertical ascent to a crooked ascent.

basically, if you already have them, use them. If you're planning on purchasing them you might as well get the 9206's instead.

If the metal gears are used on a gyro they will wear out fast because the gyro serrvo moves a lot. I heard on RCU before that the brushes would die out because of all the movement.

If you can get 9402 for cheap then it is okay to use them. If you buy them new then the cost isn't that much different then the 9402's.

The main use of the 9402 is for a steering servo for a car. Mainly 1/8 scale buggies. I used them for that, but am not that competative and a cheap servo was good enough for me.