Futaba 7C 2.4GHZ - 6.0V RX Power

[Nick Holmes 2]

Hi.  I have a Futaba 7c 2.4GHZ system,  I am told if I use a 6 volt RX battery power my S3152 Digita servis will have greater torque.  Is it ok to use a 6.0v battery with this system and S3152 servos?  Has anyone ever had any problems?

[Tim Mackey]

Speed:  .22 sec/60° @ 4.8V, .18 sec/60° @ 6V

Torque: 69 oz-in @ 4.8V, 87 oz-in @ 6V

Weight: 1.5oz (42g)

Length: 1.6" (41mm)

Width:  0.8" (20mm)

Height: 1.5" (38mm)

Remember that using 6V will use more power, so quite likely LESS duration for the same capacity 4 cell pack. The reciver is fine on 6V or even higher....and these are indeed 6V capable servos.

WHY do you want / need to use 6V ?

[Nick Holmes 2]

Thanks for the reply,  have put the servos, S3152's, into a Hanger 9 showtime 4d 90 which I was advised by TJD Models were good enough for the job,  however reading the Hanger 9 instructions it states they should be a minimum of 80oz torque hence me thinking I should use a 6v RX bettery toi give me 87oz-oin torque.  what do you think?. 

[Tim Mackey]

Well just my opinion of course...but a stronger servo is probably better TBH.

The specs of the 3152 may well claim 87oz @ 6V, but remeber these torque figures are as measured at the innermost hole of the servo arm usually, and for a 3d machine especially, you may well end up using outer holes, or indeed longer than standard arms, with a resultant dropping in torque, the "further out" you go on the arm.

[Nick Holmes 2]

Thanks for that,  any reccommendation on servo to use?

[Tim Mackey]

Well there is wide range availbale Nick, and many people have personal favs, - HiTec make pretty good servos actually, as do JR and MPX as well as Futaba. Check out the huge range available at webbies "servo shop"

Link here.

How about this ? 150+ oz torque and decent ball raced output shaft.

'Course...depends on your budget.