JR servos on 6 volts.

I have recently bought a Spektrum DX7. I think it would be prudent to run it on five cells as the minimum voltage specified is 4.7v. the servos are JR and rumour has it they do not work too well on 6v. All the specs. I have found only mention torque etc at 4.8 v. Would any one care to comment.

Hi, I am running JR 8231 digitals on 6v via a regulator and lipo pack. I did a little research on the web and the general feeling was that this is OK. After all most servo specs give speed and torque on 4.8 and 6.0 volts. Having said that I have 9 Spectrum recievers ranging from 6 channel pak fly to 9 channel and 8 of them run on standard 4.8 volt packs or BEC off a speedo. So far no problems.
The ones in my slope soarers get a bit of a hammeing and I do keep an eye on the packs with a battery checker before each flight.

All trhe best

Dave S

George this one's been batted around on many of the forums for a long time now,most people who use JR servos that I know in the main say 6V is OK that said I don't have any JR servos myself. from what I've read I'd be more concerned about the "brown out issues with Spektrum on 4.8V.

I'd be even more concerned that JR have to use additional receivers to mask an inherent defect in their systems,

Rich quit living in the past mate lol,

Goerge as the lads have said running JR on 6v seems to be fine, my cap has JR8411`s running 6v and its fine, its only the euopean JR servos that state 4.8 only the US dont

M

I have already posted a message of thanks to those who replied, but I seem to have lost it to the Great internet in the sky, If therefore two replies are seen don't put it down to senile decay just total incompetence.

I had at least one bite & he took the hook didn't he Mark..!!!

Hi George

I have used the Spektrum DS821 servos (which are just rebadged JR DS589 digital servos) on a 5 cell nimh receiver pack, with no problems at all. I think JR are just being a bit cautious in saying that they are only rated for 4.8v in the UK (perhaps they think we are stupid or something?!)

Just make sure your linkages and surfaces move nice and freely, and you should be fine.

As for brownout, then this is a complete non issue if you use a sensible receiver pack that is properly charged and capable of supplying enough current for the servos installed. The Spektrum "Brownout" issue was just a load of dozy Americans (and some Brits I suppose) looking for a scapegoat because they installed a tiny little receiver pack into a model with a load of digital servos.

Cheers
Andy (a soon to be Ex Spektrum user!)

Thanks Andy.
I know now that ' brown out ' is nothing to do with bicycle clips and reinforced canvas trousers. or is it?
Thanks to all.
George