HDTenEightyP/NetNews huggingface dataset:
From: Iskandar Taib <ntaib@silver.ucs.indiana.edu>
Subject: Re: Another net.deal: Taipan props!
Organization: Indiana University
Date: Tue, 14 Apr 1992 19:37:14 -0500

Oops I forgot to mention: Taipan props have huge "droop 
roots" so you might have to trim your spinners to suit.
Us Combat fliers don't use spinners so we don't care. 


-- 
-------------------------------------------------------------------------------
Iskandar Taib                          | The only thing worse than Peach ala
Internet: NTAIB@SILVER.UCS.INDIANA.EDU |    Frog is Frog ala Peach
Bitnet:   NTAIB@IUBACS                 !
-------------------------------------------------------------------------------
From: toree@swix.uucp (Tore Eriksmoen)
Newsgroups: rec.models.rc
Subject: Reading battery voltage on a pc
Date: 7 Apr 92 10:49:08 GMT
Organization: University of Trondheim, Norway

I've been asked to develop a battery test system for PC-compatibles.
It will be used to monitor the batteries used in electric RC-Cars 
(1:10 scale).

The software part will be quite easy, but the 
hardware is a bit more tricky. I will need a dongle which connect
to one of the external ports on the pc. I've been told that the
parallell port can be used. I'm not interested in internal pc-cards
as this system must be cheap, and compatible with most machines.

Can any of you RC-folks help me with this?



Tore
----------------------
toree@swix.ifi.unit.no
Newsgroups: rec.models.rc
From: ron@etch-eshop.Berkeley.EDU (Ronald Viegelahn)
Subject: Question about propellors
Reply-To: ron@etch-eshop.Berkeley.EDU (Ronald Viegelahn)
Organization: University of California, Berkeley
Distribution: usa
Date: Thu, 9 Apr 1992 15:31:17 GMT



 Hello

 I have a question conserning propellor size. 

A little explanation of what I'm up to... I am just now getting
around to finishing a 1/3 scale Gere sport. A 1929 bi-plane with
a 96 inch wing span, formerly marketed by Bud Nosen models.

 The plans call for a .60 to .80 glow engine (2-stroke), and suggest
a Quadra type engine for more realistic performance. This is easy to
understand.

 Now being your basic cheap-skate, I have gone out and purchased a
Mcullagh weed eater and removed the engine from it. I don't want to
get into the details of mounting etc, but I now have a 28cc single
cylender 2-stroke gas engine that is readily adaptable for use in a
large model.

 My question is what size prop can this size engine turn ?
An 18-20 diameter prop " looks " right on the plane. I was kind of
thinking about trying a 18-8 or so. I'm hoping that someone out 
there in netland will have some expirence with a similar situation.


 One last thing I will add is that I will have to retain the flywheel
for the ignition, I also think that it probly would not idle to good
without this rotating mass.



                                 Thanks to all,


                                 ron@etcheshop.Berkeley.EDU
From: bloom@inland.com
Newsgroups: rec.models.rc
Subject: Re: R/C flight simulator
Date: 13 Apr 92 14:25:30 GMT
Distribution: na
Organization: Inland Steel Company; East Chicago, IN

In article <1992Apr9.191831.1309@nmt.edu>, david@baervan.nmt.edu (David Fritchman) writes:
>      I hope this subject has not been covered in the past, but it
> came up recently in the office.
>      Does anybody know of a R/C plane flight simulator on
> microcomputers (preferably of the MS-DOS type)?  The typical flight
> simulator "games" show flight from inside of a cockpit.  What is
> being looked for is the simulation of the visuals of a model plane
> being flown from the ground, eyes about 5 to 6 feet (1.5 to 2
> meters) from the ground, etc.  Any information on this subject will
> be appreciated.
> 
> --
> xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> x                  David Fritchman    david@baervan.nmt.edu               x
> x                                                                         x
> x                           Sic pilum iactum est.                         x

The Dave Brown flight simulator is designed just for R/C models, planes 
or heli packages available.
Newsgroups: rec.models.rc
Subject: Flaps Vs Brakes (1st time in 92!)
From: elec140@csc.canterbury.ac.nz
Date: 13 Apr 92 11:01:55 +1200
Organization: University of Canterbury, Christchurch, New Zealand

I think it's over a year since this subject last came up, so it must be about
time for a rehash :->

I flew my electric glider in a glider contest yesterday (our clubs lets
electrics compete with the gliders, which works quite well), but as usual had a
few problems with the spot landing. With a $300 (NZ) motor on the nose and
lightweight construction, I'm very reluctant to bang the model in hard like the
glider guys do (some of them dig holes!). So I'm going to build a new wing soon
with a bigger span, and am wondering whether to install flaps or air brakes.

So the question is: What are the pro's and con's of brakes Vs flaps, especially
wrt (gentle) spot landings. I'm not worried about getting the model out of
thermals, it's quite strong enough to loop, roll, and/or spin to lose height.

Any responses much appreciated, thanks.

--
*********************************************************
Chris Kaiser
Postgrad - Elec Eng Dept
Canterbury University
Christchurch, NEW ZEALAND

E.MAIL: kaiser@elec.canterbury.ac.nz
*********************************************************
	"When you're fresh out of lawyers
 	 You don't know how good it's gonna feel"
		- Al Stewart, 1988
*********************************************************
From: rob@firefox.UK.Sun.COM (Robert Latham - Sun EHQ - CS)
Newsgroups: rec.models.rc
Subject: Help with Expoy
Date: 7 Apr 92 08:16:23 GMT
Reply-To: rob@firefox.UK.Sun.COM
Organization: Sun Microsystems, Inc.


I applied the usual wing bandage and epoxy to a foam wing on Sunday, and this
morning 36 hours later the expoy is still very sticky. I left the wing next to
a radiator last night in the hope that some heat may speed thing up, but no
change. I've not used this type of epoxy before, the instruction were for a 5
to 1, exopy/hardner mix.

I've always dreaded this happening is there anything I can do other than strip it
off and start again, or should I wait a few more days.

Thanks
Robert
Xref: sparky rec.models.rc:1602 sci.aeronautics:954
From: kvk@questor.sw.stratus.com (Ken Koellner)
Newsgroups: rec.models.rc,sci.aeronautics
Subject: Flying Wing Glider Power Conversion
Date: 8 Apr 92 18:55:49 GMT
Followup-To: rec.models.rc,sci.aeronautics
Organization: Stratus Computer, Software Engineering

This is an RC project but I figured I'd cross-post to sci.aeronautics
in case the theorticians there can also provide advise.

My basic situation is that I need to be aware of any consideration
when providing power to a flying-wing aircraft.  Things like thrust
angle come to mind right away.

I'm going to build a 78" span flying-wing aerobatic glider (from a
Future-Flight Klingberg Flying Wing kit).  This ship looks like your
typical flying wing with tapered planform and the normal amount
sweptback.  Aerodynamic control is via elevons on the trailing edges
of the wings.

I intend modify the ship to allow the attachment of a small fuse with
an 05-electric flight system (Astro-flight 05 geared cobolt with
sontronics 12-7 folding prop).  If you have ever seen a Peck-Polymers
Genisis, it will look pretty much the same but bigger and with a prop
on the fuse.  A PP Genisis is a 60" hand-launch glider with a fuse
about 20-25" long with only a veritical fin and rudder for surfaces.
I intend to add a similiar fuse to my ship.  It will attach below the
wing.  The prop will be about 7" in front of the leading edge and
probably about .5-1" below the leading.  The prop will probably extend
about 10-15" behind the trailing edge, enough so the battery position
will offset the wieght of the motor so that the ship balences in the
same spot with and without the fuse.  The issues I can think of
follow:

What should the angle of the wing to the fuse be?
	My impression is that for an aerobatic ship
	it should be zero.  I figure that a flying
	wind has to have some fairly critical positive
	angle of attack though.  Whether having the fuse
	is exactly at the same angle is the most efficient
	configuration is beyond my theoretical expertise.

What should the thrust angle be?
	I was going to go with 2deg right 2deg down.
	Since the prop is in tracker mode and will be
	slighly below the wing, I thought a little down 
	should be used.  The 2deg right seems to be 
	typical for most ships.

Anyone got any tips or ideas?


-- 
Prohibition goes beyond the bounds of reason in that it attempts to control
a man's appetite by legislation and makes crimes out of things that are not
crimes. A prohibition law strikes a blow at the very principles upon which our
government was founded. - Abraham Lincoln
Newsgroups: rec.models.rc
From: Iskandar Taib <ntaib@silver.ucs.indiana.edu>
Subject: Re: Interested in building/purchasing BIG battleship model
Organization: Indiana University
Distribution: na
Date: Wed, 15 Apr 1992 19:43:24 -0500

In article <3406@equinox.unr.edu> malc@pyramid.unr.edu (Malcolm L. Carlock) writes:

>"I have a dream..."  I've been thinking about attempting a LARGE (say,
>canoe-length) RC battleship.  I'm currently a rank beginner in RC, but
>I'm a meticulous model craftsman and I like to think that I have a
>reasonable amount of mechanical/electrical/structural aptitude, and this
>is a project I'd be interested in taking on.

>Plus, I live near a large, mostly calm body of water with many enclosed
>rocky coves, and I look forward to watching swimmers gawk at this thing
>as it steams past the opening of their particular cove :)  (wonder if I'd
>be violating any boating regulations.)
>
>If anyone has had experience building/operating such a beast, and has
>any advice on construction of the boat, powerplants, seals, servos, etc.,
>I'd really be interested in hearing from you, whether via posting or email.

Check out Flying Models magazine. Despite the name, they have a "Floating
Models" section in the back. Some time last year they ran a six-month (I
think..) series on R/C submarines. Some of their columnists are very much
into large warship models and often talk at length about construction me-
thods, powertrains, ballast, scale detailing, etc.

I'd say I've learned a LOT from reading the magazines.






-- 
-------------------------------------------------------------------------------
Iskandar Taib                          | The only thing worse than Peach ala
Internet: NTAIB@SILVER.UCS.INDIANA.EDU |    Frog is Frog ala Peach
Bitnet:   NTAIB@IUBACS                 !
-------------------------------------------------------------------------------
Xref: sparky rec.models.rc:1605 sci.aeronautics:959
From: bdd0066@zeus.tamu.edu (Bryan, kick the tire and light the fire, Duke)
Newsgroups: rec.models.rc
Subject: Re: Slats v.s Flaps
Date: 16 Apr 92 03:26:00 GMT
Organization: Texas A&M University, Academic Computing Services
News-Software: VAX/VMS VNEWS 1.41

In article <1992Apr14.210454.16695@bmerh2.bnr.ca>, petera@bcrka398.bnr.ca (Peter Ashwood-Smith 1600361) writes...
> 
>   Has anybody given any thought to slats? I read a while
>back in rec.aviation that slats can contribute more than flaps
>to increasing a wing's lift. I've seen dozens of models
>with flaps/spoilers but never one with working slats, what gives?
> 

They are harder to make and get to work correctly.  Flap/spoilers
are easy to do and accomplish what most are looking for--so they
are used the most.  

bryan.
Organization: Carnegie Mellon, Pittsburgh, PA
Newsgroups: rec.models.rc
Date: Tue, 14 Apr 1992 15:09:00 -0400 
From: Massimo Bigliardo <mb7r+@andrew.cmu.edu>
Subject: R/C simulator for Mac!  

In my previous posting (April 13th), I really meant Flight simulators
for Radio Controlled planes, developed or translated for Mac. I apologize,
    ^^^^^^^^^^^^^^^^
I thought it was clear, since this group is all about rc models.. BTW, if none
postes a reply, I should conclude that you can't be a Mac user and a R/C modelerat the same time...
From: rogue@hill.gnu.ai.mit.edu (The Mystic)
Newsgroups: rec.models.rc
Subject: Batteries
Date: 15 Apr 92 11:42:33 GMT
Distribution: usa
Organization: Parthix Development Corp <> Project Vortex

This question is probably answered in some other place that I know not of..
but.

The most common packs seem to be 1400 or 1700 SCR and SCE packs, and those
cheapo quickcharge ones.  Are there places to get packs with even more
capacity?  Say, 1800+?  Do people make these for entertainment?  I mean, I
would not use it to race, but for recreation on the side, so the output
rate is not that important.

Thanks in advance for any answers!

BTW: My happiness is uncontainable.  I just switched from doing business
with Tower to doing business with John Hamilton (Hamilton Hobbies).  The
prices are competetive (if not better) and the response is fast!  Besides,
I like talking to SOMEBODY, not just a bored order taker that nails you
with Tower 1500 OTHER deals that month, as soon as you're done ordering.
The personal touch is nice.  Good work, John!

--


[-=*=-][-=*=-][-=*=-][-=*=-][-=*=-][-=*=-][-=*=-][-=*=-][-=*=-][-=*=-][-=*=-]
Ben Grubin - KA1UEB          The opinions stated above are my own.  Period.
The Free Software Foundation - Project GNU   Email: rogue@gnu.ai.mit.edu
Member of the League for Programming Freedom-Contact league@prep.ai.mit.edu!
[-=*=-][-=*=-][-=*=-][-=*=-][-=*=-][-=*=-][-=*=-][-=*=-][-=*=-][-=*=-][-=*=-]
From: umteghts@ccu.umanitoba.ca (david teghtsoonian)
Newsgroups: rec.models.rc
Subject: Re: R/C flight simulator
Date: 13 Apr 92 03:36:31 GMT
Distribution: na
Organization: University of Manitoba, Winnipeg, Canada

In <1992Apr9.191831.1309@nmt.edu> david@baervan.nmt.edu (David Fritchman) writes:

>     I hope this subject has not been covered in the past, but it
>came up recently in the office.
>     Does anybody know of a R/C plane flight simulator on
>microcomputers (preferably of the MS-DOS type)?  The typical flight
>simulator "games" show flight from inside of a cockpit.  What is
>being looked for is the simulation of the visuals of a model plane
>being flown from the ground, eyes about 5 to 6 feet (1.5 to 2
>meters) from the ground, etc.  Any information on this subject will

   Many of the newer flight simulators have a "ground view" mode which
lets you fly the plane while observing from the ground. Flight Simulator
4.0 has this feature as does Knights of the Sky. I use this mode for practice
during the winter months, when I can't RC fly. The aircraft in Knights of 
the Sky seem to handle remarkably like RC aircraft. The only unrealistic
thing about using these flight simulators for RC practice is the landings.
Knights of the Sky landings are quite good, since you see the shadow of
the aircraft which lets you judge your altitude during the flare, but the
simulator is a bit too forgiving of bad touchdown attitudes. There used to
be a flight simulator for PC's and Apples made by Dave Brown. The graphics
on the version that I had were pretty crude wire-frame type but the flight
model was pretty realistic. I'm not sure if updated (re better graphics)
versions are available. If not, I would try KOTS or FS4.0 since you also
get a neat game/simulator along with the RC practice capability.
From: bdd0066@zeus.tamu.edu (Bryan, kick the tire and light the fire, Duke)
Newsgroups: rec.models.rc
Subject: Re: Pulse Jet Engine
Date: 16 Apr 92 02:16:00 GMT
Organization: Texas A&M University, Academic Computing Services
News-Software: VAX/VMS VNEWS 1.41

In article <1992Apr9.173014.1694@vax1.mankato.msus.edu>, ultra10@vax1.mankato.msus.edu writes...
>There is an add I see all the time in RCM for the plans to a pulse jet engine
>you can build out of an aerosol can. JET ENGINE TECHNOLOGIES in Tx, sells the 
>plans.
> 
>I am wondering if anyone has bought the plans and tried to make the engine ?
>If so - Did it work? What kind of thrust did you get? Could you throttle down
>to near zero thrust without the flame going out?
>Is it easy to build ?

I ordered both sets of plans (3 & 7 hp) plans.  Don't order both.  
They are just about the same.  

The engines are easy to build.  I took about an afternoon to build
the smaller one.  I have yet to make a fuel system for it, so I
don't have it running yet.  Due to the way a pulse jet works, i don't
think you could slow it down very much.  It's probably pretty much a 
full military power all the time kinda thing.   

One definate problem is that you pretty much have to design a plane
around the engine.
Also, there are no good mounts in the plans--but these could easily
be added.  

I have sorta designed a plane to fit the engine, but i'm waiting 
to finish the design and build it until i do some engine testing.
I'd like to know what kind of power it *really* is gonna have and
how much fuel its gonna suck before I commit any more money to the
project.

bryan
From: N42@psuvm.psu.edu
Newsgroups: rec.models.rc
Subject: Where is the FTP site?
Date: 10 Apr 92 14:50:39 GMT
Organization: Penn State University

I seem to have misplaced the address of this groups ftp site.  Would somebody
be so kind as to send it to me?  Thanks in advance
Scott Gregory
Newsgroups: rec.models.rc
From: eagle@vesta.acm.rpi.edu (Kirk Adams)
Subject: Re: Predicting Servo Failure
Organization: The Voice of Fate
Date: Tue, 14 Apr 1992 22:45:40 GMT

Well, my experience is that some servos are well built, and falure is not a 
problem.  I have some 6+ year old JR 505 servos taht have survived an 
amazing ammount of abuse in both planes and a helo.  On the other hand,
I was using an Indy servo on throttle in my cap21, and guess what?
a wire to the servo motor form the circuit board broke, driving the
servo hard over to full throttle.  Im kinda well known for huge fuel
tanks in my planes, so 45min later, i ran out of gas and landed dead
stick...  had it been the elevator though....  I preflight my planes,
and there was no indication at all that this was going to happen...
I have also had Aristocraft servos fail in my helo on the tail rotor,
fortunately only twice (2 different servos), and with out damage.  
Personally, Ill stick with equipment i know i can trust from now on,
which means either buying good stuff, or resoldering all wire connections
in teh cheap servos and checking them once in a while (and using them 
in cheap "beater" planes...)

Eagle


-- 
Eagle@acm.rpi.edu  
                   Hi, I'm a .signature virus
                   copy me into your .signature file
                   and watch the fun  :-)
From: mkfeil@bcrki9.bnr.ca
Newsgroups: rec.models.rc
Subject: Re: Great Planes Super Sportster 90/120 review
Date: 8 Apr 92 21:25:00 GMT
Organization: Bell-Northern Research

In article <1992Apr07.204912.6582@bmerh2.bnr.ca> petera@bcrka398.bnr.ca (Peter Ashwood-Smith 1600361) writes:
>I can also highly recommend the Great Planes Super Sport 40 although I would
                                              ^^^^^
I think you meant "Ultra" sport, Peter. 

As for the super sportsters, I also recommend them. I have the 60 size,
and an OS 50 FSR powers it very well. They do take longer to build than say
a Sig four-star 40, but I just love the rounded lines. My 60 size sportster
is also quite easy to rebuild after being damaged. My last major crash
(with movie camera on board) was pretty horrific thanks to the 2 extra
pounds of weight. Got some great footage for analysis though...

Max
--
Max Feil                 
Bell-Northern Research    Internet: mkfeil@bnr.ca
P.O Box 3511 Station C,
Ottawa, Ontario, Canada.  - What do I know? I'm just a Nerd on the Big Ranch. -
Newsgroups: rec.models.rc,sci.aeronautics
From: biesel@javelin.sim.es.com (Heiner Biesel)
Subject: Re: Flying Wing Glider Power Conversion
Organization: Evans & Sutherland Computer Corporation
Date: Wed, 8 Apr 1992 20:26:35 GMT

kvk@questor.sw.stratus.com (Ken Koellner) writes:

>This is an RC project but I figured I'd cross-post to sci.aeronautics
>in case the theorticians there can also provide advise.

>My basic situation is that I need to be aware of any consideration
>when providing power to a flying-wing aircraft.  Things like thrust
>angle come to mind right away.

>I'm going to build a 78" span flying-wing aerobatic glider (from a
>Future-Flight Klingberg Flying Wing kit).  This ship looks like your
>typical flying wing with tapered planform and the normal amount
>sweptback.  Aerodynamic control is via elevons on the trailing edges
>of the wings.

Unless you're already committed to modifying the Klingberg wing, you
might consider the Graupner mini SB-13, a sorta-scale version of the
SB-13 flying wing sailpane. It can be built as a glider, or as an 
electrically powered ship; plans include instructions for both. I'm
flying the glider version currently, and it seems to perform well.
You can order the kit for $299.- (ouch) from Hobby Lobby. Nice
sheeted foam wings, very tough plastic fuse.

Regards,
       Heiner biesel@thrall.sim.es.com
Newsgroups: rec.models.rc
From: larrie@beaufort.sfu.ca (Larrie Simon Carr)
Subject: Re: Controlling Glow Plugs
Organization: Simon Fraser University, Burnaby, B.C., Canada
Date: Mon, 13 Apr 1992 01:21:36 GMT

In article <wdu8GCe00UzxM1dIhu@andrew.cmu.edu> mm7q+@andrew.cmu.edu (Michael Oliver Muller) writes:
>
>>I don't really understand your question.  You want to have a way 
>>to control the current thru the plug element.  On my power panel, 
>>about 3 amps gives a nice bright orange heat to the element.  The 
>>only way I know how to alter the current in a fixed resistance 
>>circuit (glow plug) is to alter the voltage that the plug sees.
>
>Two questions about this comment:
>
>1.     Does the resistance change as the glow plug heats up?
>
>2.     What is the resistance of a glow plug?
>

The resistance does change and varies for different manufacturers
and temperatures.  Typical values range between 0.4 ohms to about
0.9 ohms.

My brother has a old 12v to 1.5v power box which is a bunch of
connectors and a 10 watt resistor.  However, the 1.5v depends
on the glow plug used.  One set (dont know the manufacturer at
the moment) were toasted as the applied voltage was around
2.2v.

I see in various RC magazines these power boxes with a adjustable
control.  Do these boxes control the current or the voltage
across the glow plug?

Maybe a better question is:  How are glow plugs rated, by a
maximum current or a maximum voltage? 

As for help from mail: 2 votes say it is the current, 1 vote 
says the voltage.


-- 
Larrie Carr                 
Engineering Science               (604) 291-4451  
Simon Fraser University           (604) 298-1050
British Columbia, Canada          larrie@sfu.ca
Newsgroups: rec.models.rc
From: mmcevill@mitre.org (Michael A. McEvilley)
Subject: Re: soft engine mounts
Organization: The MITRE Corporation
Date: Thu, 9 Apr 1992 14:50:20 GMT

Just a P.S. to any discussion on soft mounts.  If you are using a tuned 
pipe, dont forget to soft mount that also.  Performance Products makes a 
nice "Hush Clamp" which consists of a Lord Mount, a pipe mounting 
bracket, and a rubber strap.  The mounting bracket is screwed to the Lord Mount, and the tuned pipe is held in place by a rubber strap.

Michael