[RCSE] Mixing Digiital Servos

2002-07-28 Thread Pat McCleave

Hi Gang,

The following information was sent to me by a fellow modeler and this is the
first I had heard anything about it.  Has anyone experienced any problems of
this kind?  I personally have only owned one model that mixed digital servos
with analog and had absolutely no problems at all, but maybe I was lucky.
Any additional information would be greatly appreciated.  Also, does anyone
have George Steiner's email address.  I would like to contact him directly
about this as well.

 I am not sure if you have heard the latest on digital servos,

You can not mix brands of digital servos or mix analogue and digital
in the same plane.

George Steiner has discover a cross talking feedback problem that could
end up in a disaster for your plane..


See Ya,

Pat McCleave
Wichita, KS



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Re: [RCSE] Mixing Digiital Servos

2002-07-28 Thread Stephen Syrotiak

FWIW

I have 3 planes; an Addiction, a Compulsion and a Ariane V11 sporting
analog and digital servos in their wings.  No problemo.  So far...

Cheers
-- 
Stephen Syrotiak Building Service
Southern Connecticut
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Re: [RCSE] Mixing Digiital Servos

2002-07-28 Thread Bob Johnson

 The following information was sent to me by a fellow modeler and this is
the
 first I had heard anything about it.  Has anyone experienced any problems
of
 this kind?  I personally have only owned one model that mixed digital
servos
 with analog and had absolutely no problems at all, but maybe I was lucky.
 Any additional information would be greatly appreciated.  Also, does
anyone
 have George Steiner's email address.  I would like to contact him directly
 about this as well.

Pat,
I'm flying a Graphite using the following servo combination:
Ruddervators - HiTech HS 85
Flaps - HiTech HS 5125  (the 'singing' digitals)  :)
Ailerons - Dymond Modelsport D-200
Tiperons - Dymond Modelsport D-60

I've only got about 20 flights on the model, but so far have experienced no
problems with this combination.

Regards,
Bob Johnson
Fond du Lac, WI

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Re: [RCSE] Mixing Digiital Servos

2002-07-28 Thread Adam Till


Doesn't seem to be a big problem with MPX servos. I have (had...just sold) a Hera with 
two mini digitals on the flaps and analog
servos elsewhere (all MPX), and never had any sort of problems in two years of flying. 
I've had Superslim and IPD recievers in it,
with no change in performance. Specked out many, many times.

Cheers,
Adam

Pat McCleave wrote:

 Hi Gang,

 The following information was sent to me by a fellow modeler and this is the
 first I had heard anything about it.  Has anyone experienced any problems of
 this kind?  I personally have only owned one model that mixed digital servos
 with analog and had absolutely no problems at all, but maybe I was lucky.
 Any additional information would be greatly appreciated.  Also, does anyone
 have George Steiner's email address.  I would like to contact him directly
 about this as well.

  I am not sure if you have heard the latest on digital servos,

 You can not mix brands of digital servos or mix analogue and digital
 in the same plane.

 George Steiner has discover a cross talking feedback problem that could
 end up in a disaster for your plane..

 See Ya,

 Pat McCleave
 Wichita, KS

 RCSE-List facilities provided by Model Airplane News.  Send subscribe and 
unsubscribe requests to [EMAIL PROTECTED]

--
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If you can't beat them, arrange to have them beaten.
-George Carlin

Crinkle, crinkle, little spar,
strained beyond the yield-point far.
Up above the world so high,
bits and pieces in the sky...
-Darrol Stinton


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Re: [RCSE] Mixing Digiital Servos

2002-07-28 Thread Lee Estingoy

Dunno the physics behind it, but I have the mother of all servo mixers, and
she flies fine.

1 Singing JR 8411 on elevator  Digital
8 (EIGHT) Multiplex MCV2 Royals on flaps and ailerons - they don't sing.
Digital
1 Multiplex Jumbo on rudder - he doesn't sing either Digital
1 Hitec 705 monster servo on retract analog
1 Hitec 805 monster servo on tow release analog
2 JR 517 analogs on landing gear doors

RX is a simple little Hitec 8 slim.

Note this is in a 1/3 scale Duo Discus.  Fuse is 9 feet long. Wing span is
22+ feet. Lots of servo wire. Long, no really long, wire runs. All wire is
twisted, running on a 5 cell pack.

Oh yeah, lots of carbon fiber everywhere.

I can say without fear of contradiction that these servos do not antagonize
one another. They are a happy little family.  We flew this thing to a range
that may best be described as ABVR (Almost Beyond Visual Range) two weeks
ago, and that says a lot.  At least 3/4 of a mile out and specked, no range
or radio issues.

For pics, go here - www.courtforms.com/personal/

I have no doubt that some setups have experienced odd behaviors, but let's
please take note of other factors, most notably suspect TX/RX, poor wiring,
loose connections at any point in the harness, metal on metal contact in
anything near the plane, high or low battery voltage (5 cell jitters?) even
wacky RF at the site, that are far more likely than a Hatfields vs. McCoys
or Red v. Blue on board the plane.

Lee Estingoy
Overland Park, KS

BTW - finally got my hands on some of the Hitec 125 and 5245 servos.  The
little Hitecs seem really slick. Very tight gearing, smooth and QUIET.
Don't seem to have the extreme torque of the WingMaxx, but for 37.00 they
are pretty damned nice.  Noticeably thinner than the 81s.  Equal to or very
close to the thickness (thinness) of the Volz. The 5245 is a nice piece of
kit as well. 45.00 for a 60 oz, mini.  Again really smooth gearing, no slop.
It does whine a little under load.

Can't speak as to how the gearing will hold out. The older HS85 and 81s with
metal gears would pop their little plastic gear pretty quickly.  These are
supposed to be better

With the jump in value of the Euro we may do well to cultivate non-euro
based products in this little addiction of ours.  Hmm, maybe a TD ship from
Mexico -

Back to the books.


- Original Message -
From: Bob Johnson [EMAIL PROTECTED]
To: Pat McCleave [EMAIL PROTECTED]; RCSE [EMAIL PROTECTED]
Sent: Sunday, July 28, 2002 10:00 AM
Subject: Re: [RCSE] Mixing Digiital Servos


  The following information was sent to me by a fellow modeler and this is
 the
  first I had heard anything about it.  Has anyone experienced any
problems
 of
  this kind?  I personally have only owned one model that mixed digital
 servos
  with analog and had absolutely no problems at all, but maybe I was
lucky.
  Any additional information would be greatly appreciated.  Also, does
 anyone
  have George Steiner's email address.  I would like to contact him
directly
  about this as well.

 Pat,
 I'm flying a Graphite using the following servo combination:
 Ruddervators - HiTech HS 85
 Flaps - HiTech HS 5125  (the 'singing' digitals)  :)
 Ailerons - Dymond Modelsport D-200
 Tiperons - Dymond Modelsport D-60

 I've only got about 20 flights on the model, but so far have experienced
no
 problems with this combination.

 Regards,
 Bob Johnson
 Fond du Lac, WI

 RCSE-List facilities provided by Model Airplane News.  Send subscribe
and unsubscribe requests to [EMAIL PROTECTED]

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