HDTenEightyP/NetNews huggingface dataset:
From: worley@a.cs.okstate.edu (WORLEY LAWRENCE JA)
Subject: Re: HELP - MOS/FET Speed Controller Problem
Organization: Oklahoma State University
Date: Thu, 7 Jan 93 04:44:28 GMT

From article <9310016@hplsla.hp.com>, by davidc@hplsla.hp.com (David Cook):
>
> [stuff deleted about equipment description]
>
> was particularly apparent at slow speeds. Anyway I realized that since the
> Airtronics receiver is a BEC type I should not feed the regulated +6 volts
> from the controller back via the servo connector but should split it off and
> feed it to the receiver's battery connector. I did this and got some improve-
> ment but not what it should be. I can run the receiver with a seperate battery
> and everything works great. Why is the +6 volts from the MC12B not good 
> enough for the Airtronics receiver? I checked it with my meter and it is +6
> volts although I have not looked at it on a scope to see what kind of noise
> may be riding on it. Do I need another capacitor across the motor terminals?
> What is the proper configuration for motor capacitors?

I have raced RC Stadium trucks and 1/10,1/12 scale electrics for many years.  
If this jittering problem only starts when you apply some throttle control,
then it definately sounds like an incorrectly "capped" motor.  The Futaba
MC112B should have a MINIMUM of 3 capacitors on it.  The small .01uF or .1uF
disc-type caps (just the normal thin caps that come with most motors).
You should have one across the terminals of the motor (+ to -), and one from
each terminal to the case of the motor.  Be sure to "scruff" up the motor can
before you solder these connections, to insure a good connection.  If you were
using a high-frequency speed control, you would also want a fourth cap across
the terminals of the motor.  A polarized 4.7uF cap of at least 15V rating.
Be sure to observe proper + and - on these caps.  I would not suggest using
this fourth cap on the MC112B speed controller, or any other low-freq speed
controller.

Another possibility, if the jitter is present when all controls are at 
idle, is that your antenna is too close to the speed controller.  Try moving it
to another position on the car/truck.

Feel free to e-mail me if you continue to have problems.

-Jason Worley
 
Newsgroups: rec.models.rc
From: goza@norm.JSC.NASA.GOV (Mike Goza)
Subject: Message for Howard Kaplan of Washington State
Organization: IGOAL
Date: Wed, 6 Jan 1993 14:21:28 GMT

Hi Howie!

I wish to send you email to see how you are doing, but I have
misplaced your email address.  Could you please send it to me?


Later,
Mike Goza
goza@cheers.jsc.nasa.gov
Newsgroups: rec.models.rc
From: ntaib@silver.ucs.indiana.edu (Iskandar Taib)
Subject: Re: Engine problems 
Organization: Indiana University
Date: Mon, 4 Jan 1993 20:02:22 GMT

Check and see if you have a cracked crankcase or some other
kind of crankcase leak. These can cause untold grief.



-- 
-------------------------------------------------------------------------------
Iskandar Taib                          | The only thing worse than Peach ala
Internet: NTAIB@SILVER.UCS.INDIANA.EDU |    Frog is Frog ala Peach
Bitnet:   NTAIB@IUBACS                 !
From: cbusch@ub.d.umn.edu (Chris)
Newsgroups: rec.models.rc
Subject: I need FAQ
Date: 8 Jan 1993 01:30:44 -0600
Organization: University of Minnesota, Duluth
NNTP-Posting-Host: ub.d.umn.edu

Can someone please email me the faq. Thanx a huge bunch.

--
-=-=-=-=-=-=-=-=-= Chris Busch     cbusch@ub.d.umn.edu =-=-=-=-=-=-=-=-=-=-
 C(o_o))        _                        "The use of COBOL cripples the
   (=)         (_ -|- -|- is the         mind; its teaching should, 
  --|--        language of choice.       therefore, be reguarded as a
   /^\      Protest the use of BASIC!    criminal offense." -E.W. Dijkstra
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Wanted: Cheap run-of-the-mill standard VGA board. 
Wanted: RC airplane engines, radios, planes, etc
Newsgroups: rec.models.rc
From: antoine@osd.ulaval.ca (Antoine Gautier)
Subject: Re: Attaching canopy to fuselage
Organization: Universite Laval
Date: Mon, 11 Jan 1993 16:39:20 GMT

In article <1195667335@trsvax> earl@trsvax.tandy.com writes:
|=|
|=|
|=|/* ---------- "Attaching canopy to fuselage" ---------- */
|=|I am just finishing a Super Sportster 40.  The last thing that I need to do
|=|is glue the canopy to the fuselage.  The instructions mention using CA glue
|=|but I was wondering if epoxy or some other glue might be better.  Also, 
|=|should I glue the canopy to the monocote or should I cut the monocote where
|=|the canopy touches the fuselage?  I would appreciate any advice or personal
|=|experiences.
|=|Thanks,
|=|Michael
|=|-- 
|=|JONES,MICHAEL D.
|=|Georgia Institute of Technology, Atlanta Georgia, 30332
|=|uucp:	  ...!{decvax,hplabs,ncar,purdue,rutgers}!gatech!prism!mj4
|=|Internet: mj4@prism.gatech.edu
|=|**********************************************************
|=|

I found that a glue gun does the job very well.

--
+-------------------------------------------------------+
|    Antoine Gautier                                    |
|    Departement OSD, FSA                               |
|    Universite Laval, Quebec, PQ                       |
+-------------------------------------------------------+
Newsgroups: rec.models.rc
From: mwp@ms9.mis.semi.harris.com (Mark W. Poole)
Subject: Re: Airborne Battery Monitor Schematic
Date: Tue, 5 Jan 1993 15:30:38 GMT
X-Newsreader: TIN [version 1.1 PL6]
Reply-To: mwp@ms9.mis.semi.harris.com
Organization: Harris Semiconductor
From: sbixby@cup.portal.com (Steven W Bixby)
Newsgroups: rec.models.rc
Subject: Re: Attaching canopy to fuselage
Date: Thu,  7 Jan 93 10:47:10 PST
Organization: The Portal System (TM)


>I am just finishing a Super Sportster 40.  The last thing that I need to do
>is glue the canopy to the fuselage.  The instructions mention using CA glue
>but I was wondering if epoxy or some other glue might be better.  Also, 
>should I glue the canopy to the monocote or should I cut the monocote where
>the canopy touches the fuselage?  I would appreciate any advice or personal
>experiences.

I would choose to use thin CA, very sparingly and slowly.  The idea is to
let the minimum amount of glue dry completely before adding more to a 
joint - otherwise, the fumes from to-quickly-curing glue will fog up the
canopy.  

If you stuck down the monokote well, it will make a great gluing surface
for the canopy - if you tacked the edges and used a heatgun to shrink
the center flush (no scratches, etc), then I'd suggest using the iron
to firmly tack at least the area where the canopy will touch before
gluing.

If you want to trim back the monokote under the joint, you'll know the
joint is as strong as it can be, but it looks a little messier, IMHO.
But you can keep it neat, and just use a trim stripe over the joint
to finish it off; something I'd do for plastic-to-monokote, too.

Good luck with the Sportster!  This was my all-time favorite airplane;
I probably flew through 15 gallons of fuel before a battery connector
failure doomed the ship.  I felt so good about this airplane, I'd fly
inverted about 3-4 feet off the runway at 1/3 throttle.  But one day
the battery connection failed (I think...?) and it went into a hill
at full throttle.  ("Funeral March" plays here...)  Saddest day of
my R/C career.  Well, anyway...  I built a SS120 - it flew well also;
I just ended up trading it for a heli.  I have a SS60 and an SS 40 Bipe
in the closet waiting for workbench time... building, not repairing!

  -swb- (Steve Bixby, sbixby@cup.portal.com)
From: SRINGROS@bcsc02.gov.bc.ca
Newsgroups: rec.models.rc
Subject: Re: Electric Aircraft Publication
Date: 12 Jan 93 18:50:54 GMT
Organization: BC Systems Corporation

>MAN had an article about an all electric fly-in that mentioned electric
>ducted fans but did not provide any detail what-so-ever.
>
Speaking of electric ducted-fans, Keith Shaw did a Gotha Wing a while back,
I have only seen a few pictures and would like more info. Anyone? is
Mr. Shaw on the net? please E-mail, thanx
 
Scott Ringrose
Printing and Presentation Services
B C  Sytems Corporation, (604)389-3729 BCSC01(MVS)=SC32169
BCSC02(VM)=SRINGROS INTERNET=SRINGROS@BCSC02.gov.bc.ca
Newsgroups: rec.models.rc
From: svoboda@rtsg.mot.com (David Svoboda)
Subject: Re: Jet engines...
Organization: Motorola Inc., Cellular Infrastructure Group
Date: Tue, 12 Jan 1993 04:40:15 GMT

In article <1993Jan11.044646.13055@c3177208.ssr.hp.com> bill@ssr.hp.com (Bill Chidester) writes:
|Chris (cbusch@ub.d.umn.edu) wrote:
|
|: to ducted fan engines, how do they work? If there are rc jet engines,
|: are the jet engines pulse jet or normal turbine jets?
|
|  There are ram jets available, but nobody in their right mind will fly
|  them.  As near as I can tell, 49% of the energy emitted is heat, 50% 
|  is sound and about 1% is thrust.  

Those are not ramjets, those are pulsejets.  And you can keep your right mind 
to yourself. :-)

|  A ducted fan engine uses an extremely nervous reciprocating engine to drive
|  a multibladed prop (or fan) inside a shroud.  There are also stationary
|  blades which serve to "unscrew" the air, resulting in a more laminar airflow

Laminar?  I think not.

|  Trainers should be like first girlfriends.  You will learn a lot more with
|  one that's big, cheap and slow than you will with fast, good looking and
|  expensive.

Well, aside from the distateful sexism of that remark, he is right.  Leave the
ducted fans for a while.

On the other hand, a really fun little airplane that could be a second or
third airplane of a talented student is the Fantrainer.  From MAN plans,
the little airplane uses a Cox TD .049 and a three-bladed pusher prop in
a little shroud.  While not good for rank beginners, it is small, and
cheap, and easy to scratch-build.

		Dave Svoboda, Palatine, IL
From: mikey@hpcuhe.cup.hp.com (Michael Manlove)
Date: Fri, 8 Jan 1993 17:33:47 GMT
Subject: Re: Re: Dynaflite Skeeter and other HLG
Organization: Hewlett Packard, Cupertino
Newsgroups: rec.models.rc

/ hpcuhe:rec.models.rc / dqwelch@sgidq4.sdrc.com (Mike Welch) writes:

>
>  Nothing comes close the Chuppy's versatility.  It's great on a slope and 
> will thermal very good when build light.
>
I'll second that.  I built an aileron/SD7037 Chup over a year ago, and it's
the most versatile plane I've ever had.

> The other Chuppy used a SD7037.  This is an extremely smooth flyer.  I built
> it light (13.75 oz.)
>
You're way ahead of me...mine came out at 19 oz.  If I build another one,
I'm going to take steps to lighten up the tail.

> Are there any other Chuperosa fans out there?
>
At least one.  Chups are great.
		

mikey  (Mike Manlove)  (mikey@cup.hp.com)
Newsgroups: rec.models.rc
From: goza@norm.JSC.NASA.GOV (Mike Goza)
Subject: smoke systems for YS120FS
Organization: IGOAL
Date: Wed, 6 Jan 1993 14:17:43 GMT

Does anyone out in netland have experience with smoke systems on
YS120FS engines?  Which ones are available?  Which are the best
based on experience?

The only one I have been able to find commercially is one made by
AMP 912-367-0567.  It comes with a preheater, pump and valve for
$50.00.  It sounds like it would work fine, but I would like to
hear peoples experiences.  This is my first smoke system and I 
would like to get it right the first time! ;)

Any help would be greatly appreciated.

Thanks,
Mike Goza
goza@cheers.jsc.nasa.gov
From: pfoss@cmsa.gmr.com (Pete Foss PO/46)
Newsgroups: rec.models.rc
Subject: Re: Spinner backplate slippage cure
Date: 11 Jan 93 16:41:09 GMT
Reply-To: pfoss@cmsa.gmr.com
Organization: .................

How about the cutoff wheels that have a fabric reinforcement???  Should
be much more durable than the brittle ones.
From: dqwelch@sgidq4.sdrc.com (Mike Welch)
Newsgroups: rec.models.rc
Subject: Re: Building Board
Date: 8 Jan 93 15:27:50 GMT
Distribution: usa
Organization: SDRC

In article <C0Htu5.Dp2@csn.org>, eeak@teal.csn.org (Ed Krejcik) writes:
|> Here's a new thread that should start some lively conversation...
|> 
|> What do you all use for a building board?  I'm going on 
|> building my third plane now and I'm planning on putting
|> together a more robust build board.  Any ideas?

This is easy.  The cheapest ceiling tile I can find out the hardware store.  Great
for pins.

|> -- 
|> *** Ed Krejcik                  +--------------------------------------+  *** 
|> *** Precision Visuals, Inc.     | "Don`t be outraged, be outrageous!!" |  *** 
|> *** Boulder, CO                 +--------------------------------------+  ***
|> *** 303/530-9000      Email to: eeak@pvi.com          Disclaimer: mine... ***


				Mike

******************************************************************************
  Mike Welch                 * "Gun laws go against Darwin's Theory.
  SDRC                       *  Let stupid people kill each other."
  2000 Eastman Drive         * 
  Milford, Ohio 45150        * "Governments should not mandate the
  Tel: (513) 576-2514        *  use of safety belts.  Let Natural
  Email: Mike.Welch@sdrc.com *  Selection work."  - me
******************************************************************************
Newsgroups: rec.models.rc
From: mkfeil@bcrki9.bnr.ca (Max Feil)
Subject: Winch construction query
Organization: Bell-Northern Research
Date: Mon, 11 Jan 93 17:30:31 GMT

Some friends of mine want to build their own winch for launching sailplanes
(sport flying - not necessarily competition). I wonder if somebody could send
me some relatively detailed plans, with parts list, where to get stuff, etc.
I know some of the basic parts, but not the details...

Automotive starter motor - but what goes on the motor's output shaft?

900 feet of line - what kind, and where do I get it?

Turnaround - Is a bicycle wheel hub good enough? How should it be mounted to 
avoid line tangles?

Car or marine battery - Preferrably one that can handle deep-discharge, since
it won't constantly be on charge.

Vielen Dank!
Max
--
Max Feil  mkfeil@bnr.ca | Disclaimer:
Bell-Northern Research  |   What do I know? I'm just a Nerd on the Big Ranch.
P.O Box 3511 Station C, |
Ottawa, Ontario, Canada.| "Enrich The Soil, Not EveryBody's Goal" Peter Gabriel
Organization: University of Maine System
Date: Monday, 4 Jan 1993 13:36:23 EST
From: <WOLPERT@MAINE.MAINE.EDU>
Newsgroups: rec.models.rc
Subject: Pica 1/6 Cessna 182 kit for sale/trade

Like the heading says, I have this kit, new in the box, that I
would not be able to get to for a while.  (A problem with my
time-not the kit.)  I would like to sell it or trade it for some
other more beginner-oriented plane, or similarly valued engine
or radio gear.  For reference, this kit retails for $185 and
Tower sells it for $125.  Its wingspan is 72 inches, and it takes
a .60 sized 2-stroke or a .90 sized 4-stroke, and a 4 or 5-channel
radio.  Construction is all balsa and ply, with a plastic outer
shell.

Please e-mail responses to this address, or to :
wolpert@wimsey.eece.maine.edu
for a fast response.

Many thanks

Seth Wolpert
Bangor R/C Gulls.
Newsgroups: rec.models.rc
From: careyb@dallas.jsc.nasa.gov (Brian Carey 283-4181)
Subject: re: Chris Kaiser on Hobby Store Adress
Organization: MDSSC
Date: Tue, 5 Jan 1993 18:26:38 GMT

>I'm currently building a model that requires a micro servo in each
>V-tail surface. The smallest available here is the Futaba 143 (same
>as the 133 I think) which is about 13mm thick. However this is a bit
>too thick, so could anyone tell me if there are any smaller servos
>out there. I think Airtronics make a small one, I've also heard of
>one called the "Union 12gm", and also a super micro Kyosho one.
>Does anyone have any info on these servos?

>The second problem is obtaining them. I've been told Tower is a
>good place to try, so could someone please email me their address
>so I can order a catalog.

>Thanks for any replies.

>Chris Kaiser

>Postgrad, Elec. Eng. Dept.
>University of Canterbury
>Christchurch, NEW ZEALAND

Chris here is some Hobby stores you may want.

Hobby Lobby
5614 Franklin Pike Circle
Bentwood, Tn 370271
-800 Don't have one.
(615)373-1444 non toll free order line
(615)377-6948 FAX order line

INDY R/C Sales INC.
10620 North College Ave.
Indianapolis, Indiana 46280
1-800-338-4639
(317)846-0766 customer service

Tower Hobbies
PO Box 9078,
Champaign, Illinois 61826-9078
1-800-637-4989 orders only
1-800-637-6050 order assistance
(217)356-6608  FAX order line
(217)398-3636  non toll free order line

INDY R/C Sales INC.
10620 North College Ave.
Indianapolis, Indiana 46280
1-800-338-4639
(317)846-0766 customer service

Nationwide Hobbies
979 Kettle Creek Rd.
Eagan MN 55123
1-800-945-2121
(612)688-7885 non toll free order line 

Hope they help Brian.

From: phan@hpcc01.corp.hp.com (Eric Phan)
Date: Thu, 7 Jan 1993 03:52:16 GMT
Subject: QUERY: Magnum Pro .45
Organization: the HP Corporate notes server
Newsgroups: rec.models.rc

I'm venturing into R/C after talking to people and reading about it for several
months, and have more or less decided what to get initially.  The equipment
list looks something like this :

Futaba 7UAPS transmitter/receiver (FF7 Super here in Singapore)
OS 40FP engine
Thunder Tiger Right Flyer 40T ARF trainer (repackaged by Hobbico in the US)
(the other choice is an EZ Sportsman 45H at 65% more in price)

Another dealer here has offered a Right Flyer / Magnum Pro 45 package at an
attractive price, and I'm tempted to go for that, mainly for the extra power
(1.4 HP vs 1.0 HP, I think).

Has anyone had any experience with Magnum engines (both the GP and PRO),
either good or bad ?  Most of the people at the field where I intend to fly
use OS, so there is a wealth of experience in this engine make.  I'd 
probably go for the OS for ease of maintenance, especially for a beginner
like me, but a bit of extra power is tempting.

Thanks in advance for any input.

Eric

Newsgroups: rec.models.rc
From: goza@norm.JSC.NASA.GOV (Mike Goza)
Subject: Message for Duane (duane@intermec.com) in Washington State
Organization: IGOAL
Date: Wed, 6 Jan 1993 14:28:49 GMT

I have been trying to send the following message for the past week
or so.  I am unable to get it to duane@intermec.com  is that the
complete pathname?  Please email me back so I can try again just to
see if the connection works.

Attempted message follows:

Subject:  Magic
Glad to see that it will fly again!!!  I hated seeing those parts just
sit there.  I'm glad they found a good home.  With a YS in it, it should
scream!!  Let me know how it goes! 

Good Luck,
Mike Goza
goza@cheers.jsc.nasa.gov
Newsgroups: rec.models.rc
From: ntaib@silver.ucs.indiana.edu (Iskandar Taib)
Subject: Re: Rocket powered R/C (Estes Astro Blaster)
Organization: Indiana University
Date: Thu, 7 Jan 1993 17:04:42 GMT

In article <1993Jan5.134515.7312@linus.mitre.org> mmcevill@mitre.org (Michael A. McEvilley) writes:
>I was searching thru old issues of RCM last nite for other information and 
>came across reviews of the Estes Astro Blaster and also the Phoenix, which 
>is some other companies (Aero-Tech???) rocket glider.   The Phoenix is a glider with conventional design (i.e., horizontal stab, rudder) and I think the price for a complete system (included launcher, etc) was $189.

>If you are interested I will get the specific references for you.



Well, the Phoenix is quite a bit bigger and sophisticated. It uses a 
sheeted, glassed foam wing and has ailerons. The AstroBlaster flies 
on Estes "D" (and a proposed "E") motors but the Phoenix uses a re-
loadable composite "F" or "G" motor. The F reload runs for 4 seconds,
the G for 8 - very long in terms of rocket motors. 

You get quite a bit more airplane with this one.

Problem is that Aerotech is supposedly having problems shipping re-
loads at this point in time due to DOT regulations. You might have 
to fly them with expendables.



-- 
-------------------------------------------------------------------------------
Iskandar Taib                          | The only thing worse than Peach ala
Internet: NTAIB@SILVER.UCS.INDIANA.EDU |    Frog is Frog ala Peach
Bitnet:   NTAIB@IUBACS                 !
From: bill@denali.Central.Sun.COM (Bill Meine [Sun Denver MTS])
Newsgroups: rec.models.rc
Subject: Re: out of control
Date: 6 Jan 1993 16:27:32 GMT
Organization: Sun Microsystems, Inc.
Distribution: world
Reply-To: bill@denali.Central.Sun.COM
NNTP-Posting-Host: denali.central.sun.com

In article 72854@cup.portal.com, sbixby@cup.portal.com (Steven W Bixby) writes:
> 
> On my power planes, I still mount the switch inside, but I run a wire
> to the outside to actuate the switch - this solves the problem of 
> goo getting inside the switch mechanism.  On one plane, I rigged up
> a tiny spring-loaded hatch to cover the switch - best of both
> worlds.  The hinge was about 1/3 along the length of the hatch (about
> 1/2" by 1") and room was made under the 1/3 portion to be able to
> press on it to open the other side.  (Does that make sense?)  It
> was very clean and aerodynamic.  It was also a hassle to make, but
> what can ya say?  I enjoy my building efforts.
> 

I also have been mounting my switches on the inside with a rod to the
outside.  The rod is bent or capped on the outside and "in" is "on"
(with the wire end as flush with the fuselage as I'm willing to make
it).  There is almost no way to accidentally pull the rod to the "off"
position while launching.  I did a couple of these installations custom
until I found that there are several standard kits to do this from
Dubro and Goldberg (I think).  Works great, hard to screw up.

-Bill Meine
wmeine@Sun.COM



Newsgroups: rec.models.rc
From: jbadger@bigd.cray.com (Jon Badger)
Subject: Wanted: 75 Mhz Futaba Frequency Module
Reply-To: jbadger@bigd.cray.com (Jon Badger)
Organization: Cray Research, Inc.
Date: 12 Jan 93 13:19:27 CST

I would like to make use of my old (vintage 1984) Futaba T6FG
and want to put it in a boat for my kids but DONT want to shoot
down anybody at the local R/C field. The system is so old that
I can't find a 75 Mhz plug-in frequency module for it. If any
one has one (or knows of a source) I would appreciate hearing
from you. Of course I would also need a matching receiver crystal.

In lieu of finding one I would be interested in a used 2 channel
system (complete with tx, rx, batt & servos).

Thanks in advance,

>=====================================================================<
 Jon Badger - CRAY Research, Inc. - Network Supercomputing Support
 5005 LBJ Freeway, Suite 800        Dallas, TX 75244  214-450-9558
 Internet: jbadger@bigd.cray.com    UUCP: uunet!bigd.cray.com!jbadger
>=====================================================================<


Newsgroups: rec.models.rc
From: ntaib@silver.ucs.indiana.edu (Iskandar Taib)
Subject: Re: Jet engines...
Organization: Indiana University
Date: Tue, 12 Jan 1993 21:28:55 GMT

In article <1993Jan12.145111.7995@c3177208.ssr.hp.com> bill@ssr.hp.com (Bill Chidester) writes:

>  If somebody wanted to advance the state of RC modeling, they could develop
>  an affordable contra-rotating transmission for the RC airplane engine.  It 
>  would pay for itself by fixing tail heavy planes and giving a .40 size
>  engine .60 sized performance.  Not to mention calming the "take off, roll
>  left" effects for beginners.  You could also break two props at once...

What about the freewheeling reverse-rotating prop just behind the 
driven prop like someone tried on a C/L Stunter two years ago? It
supposedly did a real good job straightening out airflow.




-- 
-------------------------------------------------------------------------------
Iskandar Taib                          | The only thing worse than Peach ala
Internet: NTAIB@SILVER.UCS.INDIANA.EDU |    Frog is Frog ala Peach
Bitnet:   NTAIB@IUBACS                 !
Newsgroups: rec.models.rc