JR DS8411/DS8411SA Warning!

[Oscar Suarez]

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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> >
> >
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>
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