[RCSE] Electrical Conecters

2000-02-27 Thread sailplanes

My stock of 4 and 6 pin conecters for wings has ran out.
Looking fo a sorce of quality long pin conecters.
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[RCSE] coreless

2000-02-27 Thread Richard Hallett

The FMA website  http://www.fmadirect.com   is the easiest site to get to
that lists a coreless servo.  The prime difference is the quality and type
of the motor.  In addition the gear system is normally of the higher
quality.  The problem is their size.  I have not had the chance to examine
any of their coreless servos.  With there better parts being the top of the
manufacturers lines of course they will center better.  So if you were only
to buy one it might be worth it just for the elevator.

The Horizon listing of servos is much harder to get to and does not list
which ones are coreless in the list that I viewed.   Their easiest list to
read is their former "Indy" ad or catalog division of Horizon in AMA.
Unfortunately the AMA magazine is available to probably less than half the
list.  In addition they don't always include the list.

Everyone else has decided the standard case is .812 inches wide but JR is
.75 wide.  The JR will do flaps on many wings with a standard case.  The
standard case gives about twelve options of which there are several coreless
and beyond that several digital.

The coreless JR are very smooth running.  The average person will be very
surprised when they attempt to move the top of the servo and discover how
easily it turns and smoothly.  I have not had the opportunity to try the FMA
this way.

I had one friend who flew helicopter.  Basically you had to have at least
ball bearings and often beyond that coreless for the desired performance.
But when it came to contest days for other types -  he was both a very good
flyer but an excellent builder- he would use bottom of the line Jr which was
at that time the 507.  His logic-  he needed the servo to last  three trim
flights a half dozen practice flights and then three or four contest flights
then he would sell it.  He felt that would last long enough for him to do
that but it would take a little more and you could tell they were
deteriorating.

His advice on gliders was to give the elevator a blip in either the up or
down direction your choice before launching but always the same direction.
This was to test for radio on and set the  elevator to the same position
each time for launch.  This took care of many of the non centering and
similar problems that we often see.

So the coreless if you can find one that will fit in the application::
because they are ball bearing , better gears, and coreless motor would
easily outlast the common servo.  But wouldn't you expect that at 3xs the
price.  Now the question is will it improve it enough to make it worthwhile?
Or will I keep it long enough to make it worthwhile?

Rick


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RE: [RCSE] Importance of foam core cutting sequence (long)

2000-02-27 Thread Scobie Puchtler or Sarah Felstiner

 This translates into wider kerf at the "slow" end.

 With that said, I'm not real sure but that "gravity-powered"
 cutters have the
 same problem.

They do have the same problem. It is especially well illustrated when
cutting wings for a delta in which the root may be twice the tip chord or
more. Doesn't matter what's doing the driving. In this extreme taper
situation, it is obvious that most of the pull work is being done at the
root templates, where the wire is doing maximum  speed within the system. At
the tip, the pull cord is still doing its job, but it barely has to work
against any resistance, because the wire has such a long time to eat foam
that there is virtually no resistance. In fact strange waviness in the foam
at the tip can always be expected to some extent because the hot wire spends
so much more time in so much less foam that the surface is affected by the
constant radiant heat. Its all kind of fascinating once you get to thinking
about it.

Lift,
Scobie in Seattle

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Re: [RCSE] Re: Alternative Servos

2000-02-27 Thread Tom Broeski

If everyone looked in their "old servos" box and listed what they have, it might make 
the point.  I looked and have 80's 81's, locked up 255's, Dads, several different CS 
servos, an assortment of Airtronics servos (4 141's that won't center right, some 
151's I just put new gears in and they are fine now, a couple 131's and some standard 
servos) and two Volz wing max (broken shafts) and I had some Critter Bit servos until 
Karlton said to send them to him.  I have sent several Hitec servos in and they were 
replaced at no charge.  Now... the last two years (and with some major crashes 
included) I have not had to replace one MPX servo.  I used to go through 141's like 
crazy.  I have Micro 3 BB's and FL's  and they just keep on ticking.

In the long run I could have been using the best mc/V2 servos and actually saved money.

Tom

"Jerry R. Craft" wrote:

 Use the HS-85MG, the nylon gears are too thin and
 will not take any abuse.

 - Original Message -
 From: [EMAIL PROTECTED]
 To: [EMAIL PROTECTED]
 Cc: [EMAIL PROTECTED]
 Sent: Sunday, February 27, 2000 4:37 AM
 Subject: [RCSE] Re: Alternative Servos

  Mark -
  Sounds like you are on the right track here. I agree with your choices -
 with
  1 possible exception. I used the HS85's in the ailerons of a Sapphire
 wing,
  and on a really hot zoom they would give up. The ailerons would flutter
 and
  I'd have to swap out a gear set. No huge deal, I learned to slow down a
  little. It should be noted that the ailerons on a Sapphire are huge, long,
  and a little "springy" - factors that can all add to the problem.
  What kind of plane are you putting these in?
  happy trails - Rob
 
I ordered HS225BB's for aileron, elevator and rudder. HS225MG for
 flaps.
   Could save a bit of weight with HS85's for ailerons.
   Mark 
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--
Tom Broeski -- Afton, VA

TG Exhibits  (Exhibit and Prototype Design)
http://www.adesigner.com
TG Hobbies  (Home of the "Quote")
http://www.adesigner.com/hobbies.htm
BRASS (Blue Ridge Area Soaring Society)
http://www.adesigner.com/brass.htm
BRIC  (Blue Ridge Inventors' Club)
http://www.inventorclub.org
540 943-3356


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Re: [RCSE] Electrical Connectors for Wings

2000-02-27 Thread GoneSoarin

Hi,

I use connectors from Digikey.

These 4 pin connectors similar to the Deans but much longer. They are made by 
Waldom/Molex, are gold plated and .450" long on the male end. The other end 
is .172" for soldering. The receptacle is also gold plated. These connectors 
are very nice. 

See Digikey at:   www.digikey.com  A 
HREF="http://www.digikey.com/DigiHome.html"Digi-Key Corporation /AThe 
part numbers are WM5004-ND for the male connector and WM2102-ND for the 
female receptacle.

You can also see a good picture of the connectors at the Waldom/Molex site 
see: A 
HREF="http://www.molex.com/scripts/productsearch.cgi?RT=BROWSEFAM=wbUS=IDL=
2803SEQ=1PRODUCT=2478,08xx01xx%3B+2139,09507xx1,+09503xx1+-+41661,+2648xxx1,
+2651"Wire-to-Board Application/A
http://www.molex.com/scripts/productsearch.cgi?RT=BROWSEFAM=wbUS=IDL=2803S
EQ=1PRODUCT=2478,08xx01xx%3B+2139,09507xx1,+09503xx1+-+41661,+2648xxx1,+2651x
xxx   


Hope this helps,
Tom 
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[RCSE] servo lead question

2000-02-27 Thread Cliff Schwinger

I have a used CR Climax that I purchased from someone through the
internet.  It came with two Cirrus CS-20 BB sub-micro servos with
Airtonics connectors.  I would like to clip the Airtronics connector and
splice on a Hitech connector.  The servo leads have one red wire (an end
wire) and two black wires (the center wire and the  other end wire)  The
wire color chart on the back of the package of one of my servo extension
wires indicates that the for Airtronics connectors, the red wire is the
positive lead, the center wire is the negative lead and the other end
wire is the signal lead.  The same chart indicates that for Hitech
connectors, red is positive, black is negative, and yellow is the
signal. 

Is it safe to clip the leads and splice on my Hitech extension using the
wire color chart as a guide? 

Thanks for any advice anyone might have regarding this matter.

Cliff

(I have really high expectations regarding the anticipated performance
of my CR Climax. It has a small sticker on the wing indicating that it
was flown in the 1999 IHLGF!  To me, that’s like buying a used car and
then finding out that it was raced in the Daytona 500!)
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Re: [RCSE] servo lead question

2000-02-27 Thread Art Mcnamee

Hi Cliff,
your servos should work fine if you change plugs.  The only thing is make
sure you get the red (B+) in the center of the plug and the middle black wire (B-) to
the edge of the plug. the other black wire is as you said, the signal or information 
lead
and goes to the other edge of the new plug.
Thermals,
Art

Cliff Schwinger wrote:

 I have a used CR Climax that I purchased from someone through the
 internet.  It came with two Cirrus CS-20 BB sub-micro servos with
 Airtonics connectors.  I would like to clip the Airtronics connector and
 splice on a Hitech connector.  The servo leads have one red wire (an end
 wire) and two black wires (the center wire and the  other end wire)  The
 wire color chart on the back of the package of one of my servo extension
 wires indicates that the for Airtronics connectors, the red wire is the
 positive lead, the center wire is the negative lead and the other end
 wire is the signal lead.  The same chart indicates that for Hitech
 connectors, red is positive, black is negative, and yellow is the
 signal.

 Is it safe to clip the leads and splice on my Hitech extension using the
 wire color chart as a guide?

 Thanks for any advice anyone might have regarding this matter.

 Cliff

 (I have really high expectations regarding the anticipated performance
 of my CR Climax. It has a small sticker on the wing indicating that it
 was flown in the 1999 IHLGF!  To me, that’s like buying a used car and
 then finding out that it was raced in the Daytona 500!)
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Re: [RCSE] servo lead question

2000-02-27 Thread James V. Bacus

At 04:02 PM 2/27/00 -0500, Cliff Schwinger wrote:

Thanks for any advice anyone might have regarding this matter.

http://www.fatlion.com/sailplanes/servos.html

The above link should be helpful.


Jim
Downers Grove, IL
ICQ 6997780
Visit my R/C Soaring Page at http://www.mcs.net/~bacuslab/soaring.html

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[RCSE] Contest announcement F3J March 18th and 19th

2000-02-27 Thread Joe Rodriguez

Harbor Soaring Society is proud to present 2 days of F3J soaring
competition, current F3J rules – 2 man tows. Each day will be flown as a
single contest with scores combined for overall champion. To run this
contest as efficiently as possible there will be a pre-determined matrix.
This means entries close March 1, 2000. We will accept ONE pilot per
frequency, there will be no team protection. Everyone will fly against
everyone at some point in the contest. Contestants are expected to provide
their own launch equipment. Top 8 pilots will be in 15min fly-off rounds,
trophies for top 10 finishers combined.
Contest entry forms now available on the Harbor Soaring Society web page.

http://www.1hss.org/



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[RCSE] Wanted: FX 66-H-159 coordinates

2000-02-27 Thread Bill Bunny Kuhlman

Would like to have the coordinates for the Wortmann FX 66-H-159.

This airfoil is not on the UIUC web site.

Please reply via e-mail rather than through the list.


B^2B2Streamlines
Bill  Bunny Kuhlman  'specialty books for aircraft modelers'
[EMAIL PROTECTED]http://www.halcyon.com/bsquared/
P.O Box 975 P.O. Box 976
Olalla WA 98359-0975Olalla WA 98359-0976
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[RCSE] Vision's are sold..

2000-02-27 Thread Orbitone

thanks all for the replies on  the 2 vision radios are now sold..
Mike.MHSS/SWSA Member

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