HDTenEightyP/NetNews huggingface dataset:
From: svoboda@rtsg.mot.com (David Svoboda)
Subject: Re: National Sailplane Symposium - Trip report
Organization: Motorola Inc., Cellular Infrastructure Group
Date: Fri, 6 Nov 1992 20:20:50 GMT

In article <Bx9KMy.Ht3@cantua.canterbury.ac.nz> kaiser@elec.canterbury.ac.nz (Chris Kaiser) writes:
|In article <1992Nov5.004627.1837@rtsg.mot.com>, svoboda@rtsg.mot.com (David Svoboda) writes:
|> |   He currently holds the worlds records for altitude = 26,990 feet.
|> |   33.3 hours duration (the subject of this talk).
|> |   150 MPH speed record.  I don't know what class this is or if was
|> |   an old sailplane record that is no longer standing?
|> 
|> I don't think it can be right.  The current record is well over 250mph, with
|> a glider (that's faster than the powered record--model props don't work too well 
|> at those sort of speeds).
|
|Wasn't that the record set in Austria, where they thermalled/mountain-soared a
|F3B styled brick (called a "Dassel" or something?) to several thousand feet and
|then put it into a vertical dive before levelling out through the speed course...
|I think the reg's have been changed since then, and it is now required to fly a
|closed course, or do a return run within a time limit, or something like that.
|Perhaps this guy holds the record under the current rules.

Y'know, I'm not too sure of the current record holder's methods, except that
it was with an engineless aircraft.  I can tell you one thing, though; I was
peripherally involved in some speed record attempts in the `70s and, what these
guys used were thin metal-reinforced airplanes with huge servos mounted in
rigid foam, and OPS engines with homemade props.  In order to nullify any
help from the wind, they record attempts had to fly through the traps twice,
once in each direction.  The usual method was to vertically climb until just
about out of sight, scream back down vertically, gradually pull back to level
and fly through the entry trap.  (They mounted the servos in rigid foam because 
they kept breaking servo mounting flanges with the flight loads; in foam all 
they had to do was be sure to correct with rudder, as the elevator loading 
moved the servos around in the foam.)  The aircraft then SCREAMED downfield
through the other trap, then back to vertical, almost out of sight, roll over
in a split-S, vertical dive, big pullout, and scream back through the other
way.  From what the guys said, the engines were used pretty much only for the
climb and start of dive, and the props were just big flat sticks out there for
the actual speed run.  They had thought about an adjustable-pitch prop, but
couldn't figure out a way to make one stay together at that sort of revs.

Anyway, my point is that the rules back then required a double-pass, so I bet
the glider did a double pass.  Maybe the rules don't say you have to do the
other pass *immediately*, so they did one pass, worked their way back up the
slope lift, and did another pass the other way.

		Dave Svoboda, Palatine, IL
Newsgroups: rec.models.rc
From: miked@syscon.rn.com (Mike DeMetz)
Subject: Re: Heli flight simulator
Organization: Syscon Corporate Headquarters - South Bend, IN USA
Date: Mon, 09 Nov 1992 13:03:07 GMT
X-Newsreader: TIN [version 1.1 PL6]

Which one did you see. The Dave Brown(IBM),Skylark(IBM) or Aerochopper
(IBM,ATARI ST,AMIGA,MAC)?

Newsgroups: rec.models.rc
From: JIRAPINYO@kcgl1.eng.ohio-state.edu (Yujira Jirapinyo)
Subject: testing
Organization: The Ohio State University
Date: Fri, 6 Nov 1992 22:47:22 GMT

Newsgroups: rec.models.rc
From: haley@ee.ualberta.ca (Richard Haley)
Subject: motor speed control
Summary: parts list for schematic motor.ps
Keywords: throttle , speed, motor
Organization: University Of Alberta, Edmonton Canada
Date: Thu, 12 Nov 1992 18:24:46 GMT



September 1992    Proportional DC electric Motor control 0 - 100%
Circuit board for surface mount 3/4" x 2 1/8" 
Valid for any DC motor with a current rating less than the FET used
IRFZ48 60 Amps TO-220 $5 Can.
Control connects to +/- and signal from Airtronics receiver 
Circuit board replaces servo in standard mounting bracket
Break existing circuit at fuse to allow current to flow through FET
add one small wire to switch as reference for Q3

SPEED CONTROLLER PARTS LIST:

1- LM324 Op Amp  (everybody makes one) Single supply, Quad, low cost
   LM224, LM124 are temperature specs

R1, R2, R4, R5, R9, R12,R14 - 4.7 k resistors as small as possible
                                        (or 2.2 k or whatever you
                                        have lots of.)
R3 - 33 k (ramp generator)
R6 - 180 k (current limit to avoid trouble in the receiver)
R7, R8 - 1 Megohm (filter for 50 Hz noise)
R10 - 10 k pot ( or 50 or 100 or whatever)(offset since control signal
is never zero)
R11 - 27 k ( or whatever you need to get a nice full throttle travel)
R13 - 2.2 k (or whatever you need to turn the MOSFET fully on)
C1 - 0.033 uF (collects signal input and averages over severalpulses)
C2 - 0.047 uF (filter with R8)
C3 - 0.033 uF (part of ramp generator)
D1, D2, D3 - 1N4148 ( small signal diodes try without D3 )
Q1 - IRFZ40 MOSFET ( or any fet that can take 15 Amps and 15 volts with
a low On resistance; IRFZ40 - 0.028 ohms, IRF540 - 0.085 ohms, IRFP064 - 0.009 ohms)
Q2 - 2N4401 NPN transistor
Q3 - 2N4403 PNP transistor


Richard Haley
-- 
Richard  Haley                          haley@ee.ualberta.ca
Electrical Engineering                  VE6AKF 
University of Alberta 238 Civil Elect   Voice (403)492-2954
Edmonton, Alberta, Canada               Fax   (403)492-1811
From: sbixby@cup.portal.com (Steven W Bixby)
Newsgroups: rec.models.rc
Subject: Re: Non-total loss oiling?
Date: Mon,  9 Nov 92 08:14:51 PST
Organization: The Portal System (TM)

<Looking for engines that don't burn all their oil>

>What I am getting at is, are their any model engines out there that
>don't burn their oil?  Either wet or dry sump designs would be 
>acceptable.  I am just looking for something that is a little more
>environmentally conscious.  Actually, I am looking for something that
>can run on pure alcohol or propane and thus be run indoors like a 
>forklift engine does.

The only model engine I've ever seen that has oil in the crankcase is
the Kavan FK50 (or something close to that).  This is a 50cc four-stroke
engine modeled after the Continental 2 cylinder twin.  It had some sort
of oil reservoir in the crankcase.  I haven't seen any ads for this
engine for several years, and I heard something about Kavan's owner
(his name was somepin Kavan) having passed away recently.  I have no
idea if the engine is produced or not.

It was a gorgeous piece of machinery, tho...!  Very scale appearance, with
a stamped metal mount reminescent of the Continental, and even having 
"Continental" molded into the rocker covers.  I recall the price being
in the $2700 range.

If you're at all interested, try to find a library with back issues of
RCM or Model Airplane News, about 6-7 years back - they had ads for this
engine then.  Maybe some guys here have a good clue about it too... Or maybe
one of us may have actually bought one of these jewels?????

  -swb- (Steve Bixby, sbixby@cup.portal.com)

What about that O.S. wankel?  Any experience with it?  What about
the O.S. supercharged four stroke engine?  Is that still total-loss?
Does it use regular tappet valves like an automotive four-stroke?  How
is it lubricated?  Could it be modified?

Thanks for any and all opinions.
Good lift!
CB
Newsgroups: rec.models.rc
From: miked@syscon.rn.com (Mike DeMetz)
Subject: Re: Attaching Plastic Windows
Organization: Syscon Corporate Headquarters - South Bend, IN USA
Date: Thu, 12 Nov 1992 13:03:24 GMT
X-Newsreader: TIN [version 1.1 PL6]

Use RC56 or PFM. Both dry clear and can be rubbed or peeled off.

Newsgroups: rec.models.rc
From: kaiser@elec.canterbury.ac.nz (Chris Kaiser)
Subject: Re: National Sailplane Symposium - Trip report
Organization: Electrical Engineering, University of Canterbury, New Zealand
Date: Thu, 5 Nov 1992 22:18:33 GMT

In article <1992Nov5.004627.1837@rtsg.mot.com>, svoboda@rtsg.mot.com (David Svoboda) writes:
> |   He currently holds the worlds records for altitude = 26,990 feet.
> |   33.3 hours duration (the subject of this talk).
> |   150 MPH speed record.  I don't know what class this is or if was
> |   an old sailplane record that is no longer standing?
> 
> I don't think it can be right.  The current record is well over 250mph, with
> a glider (that's faster than the powered record--model props don't work too well 
> at those sort of speeds).

Wasn't that the record set in Austria, where they thermalled/mountain-soared a
F3B styled brick (called a "Dassel" or something?) to several thousand feet and
then put it into a vertical dive before levelling out through the speed course...
I think the reg's have been changed since then, and it is now required to fly a
closed course, or do a return run within a time limit, or something like that.
Perhaps this guy holds the record under the current rules.


Chris Kaiser

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

Newsgroups: rec.models.rc
From: svoboda@rtsg.mot.com (David Svoboda)
Subject: Re: What radio to get? (After 20 year absence)
Organization: Motorola Inc., Cellular Infrastructure Group
Date: Fri, 6 Nov 1992 00:13:55 GMT

In article <1992Nov3.220831.1363@awdprime.austin.ibm.com> stand@austin.ibm.com writes:
|
|I gutted the transmitter and cabled it to my IBM PC game port, bought
|Dave Brown's simulator program (without the transmitter/joy stick) and use it
|for that program.  

Can you explain what is necessary to do this?  I don't know much about the
Dave Brown program except that I've liked it every time I've played with it,
but the cost drives me away.  I bet an old pre-91 AM transmitter would be fairly
easy to find, though.

What are the resistance values necessary for the IBM gameport, and which gimbal
pots go to which pins?

Oh, and how much does the program cost without the control unit?  I have never
seen it for sale that way.

Also, last weekend at the Chicago Hobby Model Show, I met the fellow who authored
the DB simulator.  I don't rememeber his name, but I am curious if he is reading
this.  If so, I'm the bearded guy that did the eight-point roll, and attempted the 
rolling circle, on Sunday afternoon. :-)

		Dave Svoboda, Palatine, IL
Xref: sparky rec.models.rc:4556 misc.forsale:30767 ny.forsale:1890 ont.forsale:1230
From: v129raaq@ubvmsb.cc.buffalo.edu (Richard T Ciesla)
Newsgroups: rec.models.rc,misc.forsale,sunyab.forsale,ny.forsale,ont.forsale
Subject: R/C CARS AND EQUIPMENT FOR SALE
Date: 10 Nov 92 00:25:00 GMT
Distribution: na
Organization: University at Buffalo
News-Software: VAX/VMS VNEWS 1.41

I have the following for sale:

ASSOCIATED 12LW GRAPHITE - 1/12th scale on-road car w/graphite chassis,
                           Nissan GTP body, stock motor, Futaba S132H
                           high-speed mini steering servo, various 48
                           pitch gears, three Panasonic P-170 1700 SCR
                           4-cell battery packs, turnbuckle steering rods.
     Asking $180 plus shipping or best offer.

ASSOCIATED RC10L - 1/10th scale on-road, fibreglass chassis, stock motor,
                   Futaba S148 steering servo, 4-40 turnbuckle steering
                   rods, Holeshot motor heatsink, three Sanyo 1400 SCR
                   290+ 6-cell battery packs (configured for oval racing),
                   Chevy Lumina body.
     Asking $180 plus shipping or best offer.

Futaba Magnum Jr. - Pistol grip transmitter w/tx/rx crystal set, includes a
                    Tekin mini-receiver, but no servos.
     Asking $70 for the set, plus shipping.

Tekin 408s Electronic Speed Control - $40 plus shipping or B/O.

Take both the radio/receiver and the ESC for $100 plus ship.!!!

Protech 701 Nicad charger, AC/DC, adjustable amperage w/ammeter, mechanical
        timer removed, but it still works using the 'voltage' charging method,
        I'm including a pocket-sized digital voltmeter with it,
        and i'm asking $40 plus shipping!

SPECIAL DEALS!!!

Take the Radio, receiver, ESC, charger, and voltmeter for $130 plus shipping!

Take either car with the above package for $300 plus shipping, or make an offer.

And finally, you can have both cars and everything else for a total of $450
plus shipping!!!!!                                                     ^^^^

Remember, all prices negotiable!!!!!

Thanks,

Rich
Organization: Carnegie Mellon, Pittsburgh, PA
Newsgroups: rec.models.rc
Date: Sun,  8 Nov 1992 21:37:31 -0500 
From: Chris Beasley <cb1p+@andrew.cmu.edu>
Subject: Non total-loss oiling?

Hey folks, 
I am wondering about lubrication systems as applied to
model aircraft engines.  I have several helicopter engines in various
sizes and they are all two strokes, and all use total loss oiling.

I am also under the impression that model four strokes (and the O.S.
wankel?) also use total loss oiling.  How does the lubrication system
work on a four stroke?

I am aware that there are full-size two and four strokes that get by
without total-loss oiling and are much more "green".  Of course, many 
full sized two strokes (like in my motorcycle and lawn-mower) still
burn their oil as designed.

What I am getting at is, are their any model engines out there that
don't burn their oil?  Either wet or dry sump designs would be 
acceptable.  I am just looking for something that is a little more
environmentally conscious.  Actually, I am looking for something that
can run on pure alcohol or propane and thus be run indoors.

What about that O.S. wankel?  Any experience with it?  What about
the O.S. supercharged four stroke engine?  Is that still total-loss?
Does it use regular tappet valves like an automotive four-stroke?  How
is it lubricated?  Could it be modified?  Have any folks out there
ever tried to modify an engine to be lubricated in any way other then
total-loss oiling?

Thanks for any and all opinions.
Good flying!
CB
From: howie@intermec.com (Howard Kaplan x1696)
Newsgroups: rec.models.rc
Subject: Shuttle ZX Fan/Hub Alignment with Enya Engine
Date: 5 Nov 92 16:38:44 GMT
Reply-To: howie@intermec.com ()
Distribution: world
Organization: Intermec Corporation, Everett, Wa.

Come on guys! Someone out there must be running the  Shuttle ZX with Enya
engines.

Repeating my problem - After about two hours on my ZX I noticed a significant
wobble in the clutch bell.  Traced it to the fan/hub assembly not running
true.  I pulled the engine assembly to see what I could do.  Looks like there
is no real easy way to dial this assembly in.  At first (previous posting) I
thought the problem was due to the metal hub assembly shifting within the
plastic fan thinking the lower fan plastic surface was what was seating
against the engine bearing.  Upon closer inspection I realized the metal hub
at the lower fan surface is what rests on the inner race of the bearing.  This
surface is slotted for the key that mates with the engine crank.  Pushing the
fan/hub assembly onto the crank reveals the fact that it can be rocked
slightly due the slop in the hole drilled though the hub.  There appears to
be more slop at the top than at the bearing race.  Since the mating area of
the hub at the engine bearing race is so small the assembly will always shift
from vertical when tightening the crank bolt.  The result is a run out of
over .015 when dialing at the top center of the fan hub. This is way beyond
acceptable and will cause serious shaking/wear of the machine.

I tried removing the key and rotating the hub to various places, but no matter
what position, once the crank bolt is tigthened the run up goes up beyond
acceptable limits.

Called Altech and they said to not tighten the bolt much since the key
prevents the fan/hub from spinning and to use locktite. Tried this, but in
order to keep it running true the bolt was basically finger tight.  One tap
or a pull with a force roughly equivalent to the side pull of the starter
belt immediately forced the fan/hub out of true.  It is hard to believe the
ZX has been on the market so long with this problem.  Am I missing something?

Called heli-unlimited and he confirmed the problem.  He deals with it by
drilling out the hub a few thousanths and gradually tigtening/tapping and
dial indicating to get the hub to run true.  He sometimes retains the key,
but in most cases has to remove it to get it to run true.  He also pointed
out that the zx engine mount holes are slighly off also which also compounds
the clutch/fan/hub alignment problem.  He solves this by drilling out the
engine holes a bit and truing the engine to mount angle.  

Any enhamcement to this proecedure or tips would be appreciated.

Thanks,

Howard Kaplan
From: nebres@iftccu.boeing.com (Dan Nebres)
Newsgroups: rec.models.rc
Subject: Re: Heli flight simulator
Date: 9 Nov 92 18:37:48 GMT
Organization: Boeing Commercial Airplane Group

/ iftccu:rec.models.rc / schiewer@pa881a.inland.com (Don Schiewer) / 10:36 am  Nov  6, 1992 /
For those helicopter people, (I don't fly)
I saw a neat helicopter flight simulator at the Chicago Hobbie
show.  The novel thing was that they wired an interface right 
into a real helicopter transmitter.  I did not try the demo, but
assuming the simulation is good, this would be a good way to save
money (in terms of crashes)  while learning to fly your heli...


-- 
Don Schiewer   | Internet  schiewer@pa881a.inland.com    | Onward Great
Inland Steel   | UUCP:     !uucp!pa881a.inland!schiewer  | Stream...
----------

This is probably the heli simulator - Areochopper by Ambrosia.  I am
doing some beta testing on the PC model.  It's pretty nice since
almost all the variables can be programmed in (ie. wind, pitch, transmitter
gliches, etc.)  The transmitter is not a real helicopter transmitter, but
it is made by Futaba and does look and feel like the real thing.  
Ambrosia has had other models out for the Apple and the Amegia.  This is
also an Airplane/glider simulator too.

dan

nebres@iftccu.boeing.com
From: sringrose@galaxy.gov.bc.ca
Newsgroups: rec.models.rc
Subject: Re: Attaching Plastic Windows
Date: 12 Nov 92 14:40:02 -0800
Organization: BC Systems Corporation

RC56 seems to work ok, I don't know how long or how durable the bond is
but I have used it on a P-51 canopy. (I don't know how durable it is
because the p-51 is a HANGAR QUEEN)

Scott
P & PS BCSC
INTERNET SRINGROS@bcsc02.gov.bc.ca
Newsgroups: rec.models.rc
From: rhk2j@csissun14.ee.Virginia.EDU (Robert H. Klenke)
Subject: Re: Top Flite P39 Airacobra
Followup-To: rec.models.rc
Reply-To: rhk2j@csissun14.ee.Virginia.EDU (Robert H. Klenke)
Organization: University of Virginia
Date: Wed, 4 Nov 1992 21:58:52 GMT

 

In article <1d9a8jINN3lc@msk.Warren.MENTORG.COM>, msk@Warren.MENTORG.COM
(Mark Kaplan) writes:
|> I just acquired this kit as a gift.
|> Has anybody built and/or flown one?
|> 
|> I am a little concerned about weight.
|> The plans say 5/12 to 6/12 lbs. It seems hard to
|> beleive it could come out that light,
|> especially if I add the retracts (Anybody have experience
|> with the CG retracts). I want something slow and
|> releastic.
|> 
|> Has anybody added the flaps. Are they effective in
|> slowing the thing down for landings?
|> 
|> Planned power is an old ST bluehead 60. Perhaps this
|> won't be enough.

	One of our club members here had one and he had a lot of 
trouble with it. He flew it 4 or 5 times that I know of and it crashed
every time. I think the problem was excess weight. The plane seemed to
tip stall and roll on its back whenever it got too slow (which was in
fact not slow at all!) It was powered by an ASP 60 and had air
operated retracts. I looked pretty good, but didn't fly well at all.
By the way, this guy is a very good pilot, but he may build heavy.

	If I were you, I might think about building the plane without
retracts to save weight. All of the War Bird models are very sensitive
to excess weight, some more than others. I had a Top Flight Corsair
that would snap roll in the blink of an eye if you let it get too
slow. It also had retracts and 16 oz of lead in the nose to make the
CG come out right.

	I have used the Goldberg retracts, and I don't really 
like them. I have the Dave Brown retraces in my GP Mustang and they
seem to work better.

Bob
----------------------------------------------------------------------
 Bob Klenke, Research Associate       Dept. of Electrical Engineering
 (804) 924-6079 [office]              Room E208
 (804) 924-4489 [lab]                 Thornton Hall  
 (804) 924-8818 [fax]                 University of Virginia 
 e-mail: rhk2j@Virginia.EDU           Charlottesville, VA 22903-2442
----------------------------------------------------------------------
Newsgroups: rec.models.rc
From: mhanafi@magnus.acs.ohio-state.edu (Mahmoud Hanafi)
Subject: Building The Great Planes Patriot
Followup-To: mhanafi@magnus.acs.ohio-state.edu
Keywords: Patriot
Organization: The Ohio State University
Date: Tue, 10 Nov 1992 05:15:49 GMT

Does anyone have any tips or experiences on building the Great Planes Patriot.
Especially on the subjects of engine size, retracts, and covering tips. Any
information that could be provided would be greatly appreciated.
From: sringrose@galaxy.gov.bc.ca
Newsgroups: rec.models.rc
Subject: Re: Winter Flying
Date: 12 Nov 92 14:49:21 -0800
Organization: BC Systems Corporation

Just a note from another part of Canada on winter flying.  We just make
sure our footwear is waterproof and try not to land in puddles!
 
Scott
P & PS BCSC
Victoria B.C.
Internet SRINGROS@BCSC02.GOV.BC.CA
From: pricejoh@CS.ColoState.EDU (john russel price)
Newsgroups: rec.models.rc
Subject: test
Date: 7 Nov 92 03:31:43 GMT
Article-I.D.: yuma.Nov07.033143.33504
Organization: Colorado State University Computer Science, Industrial Technology

This is a test.

-- 
John Price    email: pricejoh@handel.CS.Colostate.Edu
Newsgroups: rec.models.rockets
From: Roger.Wilfong@umich.edu  (Roger Wilfong)
Subject: Re: Chicago Trade Show Results?
News-Software: FTPNuz (DOS) v1.0
Organization: UofM Hospitals
Date: Fri, 6 Nov 1992 11:17:00 GMT

In Article <1992Nov5.235726.24234@cbnewse.cb.att.com> "mckiou@cbnewse.cb.att.com (kevin.w.mckiou)" says:
> 
> OH YEAH - THE ESTES EGGLOFTER!  "Something for Bob Kaplow" was the way
> Mike Hellmund put it.  It's a dual egglofter with a  capsule that
> screws together.  Real streamlined and the bodytube looked like it
> was just fine for >D dual egglofting.  Real efficient looking model.
> The colors and trim were kind of funky, though <G>.  Comes with
> molded foam to cradle the eggs.
> 
> Kevin
> 
Is 'something for Bob Kaplow' a reference to his and Allan Jones old team
nems 'Dual Eglofters'?  They changed the name to 'The Usual Suspects' a 
couple of years ago.
  
A reissue of the MacDonalds happy meal flying saucer could rightly be
claimed as 'something for Bob Kaplow'.
Newsgroups: rec.models.rockets
From: hack@arabia.uucp (Edmund Hack)
Subject: Re: Reload Status ?
Summary: RSN
Organization: Lockheed ESC, Houston
Distribution: usa
Date: Thu, 5 Nov 1992 22:27:12 GMT

In article <1992Nov5.212322.27615@scic.intel.com> 
    johnu@scic.intel.com (John Urbanski) writes:
>
>Anyone hear anything about the status of RMS ?
>
According to a message from Aerotech on CompuServe earlier this week,
they expect a (presumably) favorable ruling "soon".


-- 
    Edmund Hack - Lockheed Engineering & Sciences Co. - Houston, TX
  hack@aio.jsc.nasa.gov - I speak only for myself, unless blah, blah..
   Papoon for President - You Know He's Not Insane! - Endorsed by the
  American Friends of the Martian Space Party, League of Winged Voters
Newsgroups: rec.models.rockets