Can you use JR servos with a Futaba Rx. Do you have to change anything.

Yes you can and no you don't.

Check your direction, they usually rotate opposite the Futaba servos so if you are replacing servos you probably have to reverse the channel.

Other than that they work fine. Though its usually the JR guys sneaking Futaba servos

I'll add something to BH's post....


if you are replacing another brand servo DO NOT USE the same servo horn.... they DO NOT match...
you may get it to fit, but they do not have the same number of teeth on the output shafts.....

Yes, any brand of servo can be used with any receiver. But... There are a few wiring and plug issues to deal with. Consult the attached diagram to see what I am saying.

And Exeter is right on the money. NEVER use a servo horn from any brand other than the ones made for your servo. Most manufacturers use a little different tooth count on the shaft and if you use the incorrect arm on your servo you could find it stripping out or slipping in use, which usually leads to the plane coming home in a bag!!

Ken