I have 2 x 1/4 scale 14.5kg servos side by side on a Y lead opperating a leg on a large boat, in a push pull set up. The torque from the leg is over powering the servos.
My question is if I go to 1 servo in a hi torque range of about 28kg & using the single arm as a push pull, is there a chance of fixing the problem?
Speed of the servo is not an issue.
What servos are available for this application?

Second question is if I feed 6V into the reciever (Futaba PCM), is it a 6V output to the servo?

Thanks for your time
Paul.

Not being familiar with your needs, we can't give you a proper answer, but the most powerful servo Futaba makes is the S5301, and it has about 21 Kg-cm of torque when run on a 5-cell NiCd or NiMH battery pack.

Full specs are at:

http://www.futaba-rc.com/servos/futm0029.html

When a battery pack is connected to the receiver, the current is sent unregulated to the servos.