Log in

I forgot my password

RDMFC Social Media
RDMFC Facebook Page
Latest topics
» Proposals for Model aircraft flying ( CAA registration) April 2019
JR servos on 6 volts. Empty2019-05-08, 17:49 by Gary M Jones

» Police crash
JR servos on 6 volts. Empty2019-04-14, 15:36 by Roy

» Bit of indoors
JR servos on 6 volts. Empty2019-04-13, 16:49 by Roy

» For Sale
JR servos on 6 volts. Empty2019-03-03, 23:44 by Charles E Cornes

» selling up finaly!
JR servos on 6 volts. Empty2019-02-10, 16:31 by melfyn

Saturday 7/7/18

2018-07-07, 21:07 by Gary M Jones

I was at the field today between 14:00 & 15:00 all on my own , good flying too. There is a dead sheep along the fence line towards the gate from the pits, I saw the farmer so reported this to her. I hope no one had plans for a BBQ Smile .

Farmer …

Comments: 1


JR servos on 6 volts.

Go down

JR servos on 6 volts. Empty JR servos on 6 volts.

Post by George Robson on 2009-02-05, 17:17

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.

George Robson
RDMFC Member

Posts : 25
RDMFC Bonus points : 33
Join date : 2008-11-25
Location : Flint Mountain

Back to top Go down

JR servos on 6 volts. Empty JR servos on 6v

Post by Guest on 2009-02-05, 17:40

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 Very Happy

Dave S

Guest
Guest


Back to top Go down

JR servos on 6 volts. Empty Re: JR servos on 6 volts.

Post by Brian Colclough on 2009-02-05, 17:52

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. Wink

Brian Colclough

Posts : 3238
RDMFC Bonus points : 4736
Join date : 2008-11-17
Location : Rhuddlan

http://www.imacuk.co.uk/   http://www.rdmfc.org.uk/

Back to top Go down

JR servos on 6 volts. Empty Re: JR servos on 6 volts.

Post by Rich on 2009-02-05, 18:40

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

"FUTABA" it really is the future.
Rich
Rich
Treasurer/Membership Secretary

Posts : 4724
RDMFC Bonus points : 5636
Join date : 2008-11-18
Location : 53.3200°N, 3.4726°W

http://www.futaba-rc.com/

Back to top Go down

JR servos on 6 volts. Empty Re: JR servos on 6 volts.

Post by Mark Barnes on 2009-02-05, 19:03

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
Mark Barnes
Mark Barnes
Club Secretary

Posts : 6607
RDMFC Bonus points : 8238
Join date : 2008-11-16
Location : Rhyl North Wales

Back to top Go down

JR servos on 6 volts. Empty JR servos on 6 volts.

Post by George Robson on 2009-02-05, 19:26

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.

George Robson
RDMFC Member

Posts : 25
RDMFC Bonus points : 33
Join date : 2008-11-25
Location : Flint Mountain

Back to top Go down

JR servos on 6 volts. Empty Re: JR servos on 6 volts.

Post by Rich on 2009-02-06, 15:05

I had at least one bite & he took the hook didn't he Mark..!!!
Rich
Rich
Treasurer/Membership Secretary

Posts : 4724
RDMFC Bonus points : 5636
Join date : 2008-11-18
Location : 53.3200°N, 3.4726°W

http://www.futaba-rc.com/

Back to top Go down

JR servos on 6 volts. Empty Re: JR servos on 6 volts.

Post by Andy Sayle on 2009-02-06, 21:50

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. Smile

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

_________________
Chicks dig slop free linkages....
Andy Sayle
Andy Sayle
Club Chairman

Posts : 4739
RDMFC Bonus points : -487569787
Join date : 2008-11-16
Location : Abergele, North Wales

Back to top Go down

JR servos on 6 volts. Empty JR servos on 6 volts.

Post by George Robson on 2009-02-07, 12:17

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

George Robson
RDMFC Member

Posts : 25
RDMFC Bonus points : 33
Join date : 2008-11-25
Location : Flint Mountain

Back to top Go down

JR servos on 6 volts. Empty Re: JR servos on 6 volts.

Post by Sponsored content


Sponsored content


Back to top Go down

Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum