JR DS8411/DS8411SA Warning!

Sat Sep 14 06:17:15 AKDT 2002

I had the same on 8411, locked full up aileron,
horizon repaired the servo and others i had w/ a new
motors. motor was locked in the failed servo, i pulled
the cover and checked. anyway, sure wish they wouldve
replaced the plane. been flying the servos in the same
spot since and no problems so far....

--- "He nderson,Eric" <eric.henderson at gartner.com>
wrote:
> Nope! the pattern servos fail too! - In my case it
> was an 8231.. Locked on
> full up aileron.... very rough day! there was a
> recall last year on certain
> servos. I sent all of mine in. Got then back in 5
> days.
> 
> Eric.
> 
> -----Original Message-----
> From: Oscar Suarez [mailto:suarez at pacific.net.ph]
> Sent: Thursday, September 12, 2002 4:50 AM
> To: discussion at nsrca.org
> Subject: Re: JR DS8411/DS8411SA Warning!
> 
> 
> Hmmm... there must be something on the heli's that
> the digital servos can't 
> take (even though they have so much holding
> power/torque) ... vibration 
> perhaps, but if you think about it, our YS engines
> gives our a/c stronger 
> vibrations than the helis, yet, they're holding very
> well.  I don't think 
> the problem is only w/the DS8425/DS8411s, in my own
> experience, I had 2 
> different DS8455/8417 fail on my Vigor heli early
> this year on 2 separate 
> occasions (luckily I was still hovering on both
> times) and a friend who had 
> one fail as well on the first flight on his Voyager
> 50.  So why do the DS 
> work fine in our pattern planes which subjects our
> servos to more 
> vibrations compared to those on the helis? Oscar
> 
> At 09:30 PM 9/11/02 -0400, you wrote:
> >I just pulled this from the Horizon Site:
> >
> >Notice to Helicopter Pilots using JR 8411/8411SA
> Digital Servo (DS)  [ top
> ]
> >
> >As a result of our own investigations and feedback
> we have received from
> >websites such as RC Universe and Run Ryder, Horizon
> and JR have dedicated
> >all of our available resources to investigating
> reports of motor failures
> in
> >our 8411 digital servos when used in helicopter
> applications.
> >
> >Our findings thus far have revealed that only a
> small number of 8411 DS
> >motors have failed. However, Horizon is taking
> these claims of failure very
> >seriously - any failure is one too many. All
> additional findings will be
> >immediately shared with you on this site so please
> check back soon for
> >updates.
> >
> >Please know that your safety and trust is our
> foremost priority and will
> not
> >be compromised or taken for granted. We are
> committed to providing only the
> >best products and service available in the RC
> industry so if you have ANY
> >questions or concerns regarding your 8411/8411SA
> servos being used in a
> >helicopter application, please do not hesitate to
> call our product support
> >staff at (877)504-0233.
> >
> >________________________________________________
> >
> >Van Flowers
> >AMA: 6216 IMAC: 2229
> >IMAA: 26019 NSRCA: 2778
> >www.rc-aerobatics.com
> >
> >
> >
> >
> >----- Original Message -----
> >From: "Ronald H. Filteau" <filteau at sk.sympatico.ca>
> >To: <discussion at nsrca.org>
> >Sent: Wednesday, September 11, 2002 8:40 PM
> >Subject: Re: JR DS8411/DS8411SA Warning!
> >
> >
> > > Hi Folks
> > >
> > > What is the web address.
> > >
> > >
> > > Ron
> > > ----- Original Message -----
> > > From: "David Sweatt" <dsweatt at hotmail.com>
> > > To: <discussion at nsrca.org>
> > > Sent: Wednesday, September 11, 2002 8:30 AM
> > > Subject: JR DS8411/DS8411SA Warning!
> > >
> > >
> > > > I don't get on here very often, however I
> would like to make the
> pattern
> > > > community aware of some hubbub that is going
> on with the helicopter
> guys
> > > > right now. There have been quite a number of
> severe instances of guys
> > > > crashing helicopters due to motors failing in
> the 8411 and 8411SA
> >servos.
> > > So
> > > > much so that Horizon has made a official
> statement on their website
> >about
> > > > it. I personally fly these servos in both
> pattern ships and
> helicopters
> > > and
> > > > have not had any issues, but I know several
> heli guys who have, and
> > > several
> > > > guys who were able to prove it to Horizon and
> have all of their crash
> >paid
> > > > for. Palomar RC field in San Diego has
> actually BANNED the use of
> these
> > > > servos in any aircraft at their field until
> JR/Horizon resolves the
> > > problems
> > > > they are having with them. And several other
> fields in California are
> > > > following suit. Anyway food for thought, don't
> want to start a big JR
> >vs.
> > > > Futaba or whatever controversy here, I'm just
> passing along this
> > > > information. I have several good pattern
> buddies that also use these
> > > servos
> > > > and I wouldn't feel right if their ship
> crashed and I had kept my
> mouth
> > > > shut! Thanks, David Sweatt
> > > >
> > > >
> > > >
> > > >
>
_________________________________________________________________
> > > > Chat with friends online, try MSN Messenger:
> http://messenger.msn.com
> > > >
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=== message truncated ===

=====
Brian Young
Tulsa
b4598070 at yahoo.com
918-745-6046h
918-838-0900w

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