gapple12

I recently switched from 4.8 volt batteries to 6.0 volt batteries. After forming them I put them in the plane and turned everything on. The servos seem to chatter when I let the controls go to 0 deflection for about a second or two. It is not every time but pretty close to it. Is this normal? Do I need a regulator? I am running six metal geared High Torque Futaba servos and one Jr 8711a on my controls. Any ideas?? Do I need to cycle them?

mrasmm

looks like the JR is fine
DS8711 ULTRA TORQUE SERVO
Specs
Type: Digital Ultra Torque
Torque: 347 oz/in @ 4.8V, 403 oz/in @ 6V
Speed: .19 sec/60° @ 4.8V, .15 sec/60° @ 6V
Dimensions (WxLxH): .82" x 1.58" x 1.56"
Weight: 2.36 oz
Gears: Metal alloy
http://www.jrradios.com/Products/Tec...rodID=JRPS8711

is that one chattering too (the JR)? What model futaba servo's do you have?

my guess is maybe some of the servo's are not rated for 5 cells, but if you've already checked that, that's a weird one to me. Have you tried putting the 4.8v back in there to see if it still does it then?

Have you ruled out all possibilities of interference?

sorry I don't really have a straight definative answer, hopefully you get it figured out though.

MR G

It is normal for servos to chatter a little bit when turning a 6v system on with a battery that just came off a charger.
the battery voltage just off the charger could be as high as 7.3 or 7.4 volts. The servos will settle down in a few minutes when the battery discharges slightly.

IMHO

MR G

gapple12

Well, I thought that too about the voltage needing to drop a little, so I discharged them a bit and it got better but still does it. My Futaba servos are the S3305 High Torque Metal gear servos which say they can run on the 6 volt. When I put the 4.8 volt batteries back in, it goes away completely. This is weird....... Could I have bad batteries?

Ryan CSRC

There is nothing wrong with your battery, the servos are just hyperactive because of all the extra voltage. Higher volts is harder on the servos, but I personally have never had one fail because of the higher volts. All the servos you are using are rated for 6v so I think they will be fine.

Ryan Lefevre
www.CommonSenseRC.com
The Go To Guys For Electric Power

gapple12

Ok, well I think it is such a small movement that it shouldn't effect the plane, but just wanted to make sure before I flew. Thanks for the help.