Quote Originally Posted by cjsowry View Post
Okay, dumb question time again!!

Looking to get a 20kg servo for the lifter.

http://www.ebay.co.uk/itm/Power-HD-4...gAAOSwTglYlokr

two questions.

I know they plug directly into the receiver, but the description mentions torque with the amount of volts. So do these servos need a direct supply from the battery as well?!

AND if so, if I want to run a 3s system will this be too much for the servo only stated at 6.6volts..!?!?!

Thank you again!
Hi Chris

the servo will be powered by the receiver yes, but that needs a 5/6v supply of it's own, which it usually gets from the BEC from one of your speed controllers. You should be careful however that the current draw from the servo won't be above what your BEC can supply (Ebay listing doesn't mention how much it needs for the one you linked). If so you will need a separate BEC to power the receiver, I use this one in my beetle lifter https://hobbyking.com/en_us/turnigy-...-for-lipo.html . So in my case I run a 4s battery, the drive gets 4s, and the receiver / servo gets a stepped down 6v.

Hope that's some help

James