Re: [RCSE] Celebs in RC Soaring

2001-05-23 Thread LJolly

Pat,
Thanks for the kind words, but my work can hardly qualify me as a celebrity. 
My team and I are just a few of the thousand or so individuals who bring a 
movie to the big screen. We did win an Emmy for Visual effects on Miracle 
Landing for the 1/10 737. Recently my team did the 1/4 scale Hueys for 
Charlie's Angels, a nice explosion all done in the camera no CG enhancements, 
The 1/4 scale aft fuselage and tail section MD11 for Castaway, Bell 212s for 
Segals Exit Wounds, 1/6 th B25 for the Doolittle crash for Pearl Harbor, 1/4 
scale MDX 900 for Travoltas Operation Sworfdish, and WE have just finished 14 
Biplanes for Stuart Little 2 in various sizes and versions. I have worked 
everyday since JAN 3 except Easter and Mother's day. I am now ready to start 
training for the F3J finals and am desperately looking forward to some model 
and full-size glider flying. By the way  I am lucky to have several people 
you guys fly with helping me. LJMP crew who also fly RCsaiplanes are Steve 
Addis, Dennis Brandt, Bob Pope, Dan Fink, and many others. You can check out 
some past work at LJMP.com .Thanks Larry
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[RCSE] How do you read a polar?

2001-05-23 Thread Marc Webster

Hello everyone,

I went to the selig website to look up some airfoils and the polars are 
completely greek to me.  How do you interpret the data?  Is there any 
website that explains how to read a polar.  I am not an aeronautical 
engineer so I need a practical explanation if possible.  I have seen a book 
called understanding polars without math.  Anybody read it?  I would really 
like to learn what makes some airfoils are better than others, and make an 
informative decision on which airfoil to choose rather than what everbody 
else uses.

Currently, my TD airfoil of choice is the SD7075.  I prefer it to the SD7037 
as it seems to have a bit more range, responds to camber well and will still 
slow down almost as slow as the SD7037 when thermaling.  This decision is 
based solely on my flying style and personal experience and I am sure others 
will dissagree with me.  I would however love to learn why one airfoil suits 
my flying style than another?

Any information will be greatly appreciated,

Marc Webster
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[RCSE] Understanding Polars without math.

2001-05-23 Thread Bill Swingle

Years ago I read the book Understanding Polars without Math. Let me whole
heartedly recommend this book. It's a wealth of information and really
doesn't require any math. None believe it or not.

The book answered some questions and shed quite a bit of light on airfoils
and reading polars. Very useful.

Bill Swingle
[EMAIL PROTECTED]
Janesville, CA


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[RCSE] why are ailerons top-hinged?

2001-05-23 Thread Arne Ansper


hi!

simple question: why are ailerons top-hinged? i have two explanations:

1) they look better this way

2) since the pushrod is usually on the lower side of wing one can use
shorter control horn (by the thickness of the aileron), to achieve same
throw that helps to reduce drag somewhat.

since i'm putting the pushrod on the top of the wing i would like to put
the hinge to the lower surface. are there any aerodynamical consideration
which make the top hinged ailerons with continous upper surface more
desireable?

arne


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Re: [RCSE] How do you read a polar?

2001-05-23 Thread Arne Ansper



 I went to the selig website to look up some airfoils and the polars are
 completely greek to me.  How do you interpret the data?  Is there any

take a look at http://members.tripod.de/MartinHepperle/Airfoils/howdoi.htm

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Re: [RCSE] motorcycles

2001-05-23 Thread Easwen6877


I only fell once with my motorcycle many years...but I was traveling at 75mph.

A safer sport/activity may be slope soaring with a lead sled in big winds...a 
real rush, like motorcycles, but it's the plane that  hits the ground, not 
you.

E. Swenson
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RE: [RCSE] motorcycles

2001-05-23 Thread Gavin Botha

I have been riding bikes continously for over 30 yrs., and have competed in
everything from off-road Trials to 750cc Superbike and F1 Racing.  The once
a year thing is absolutely false, I have'nt dropped a street bike in over 12
yrs. I agree with Dennis, ride smart and enjoy!

Gavin (garage stuffed with 5 motorcycles) Botha


Dudes,
Actually:
There are only two kinds of motorcyclists, those who have fallen and those
that
will.

There's no truth to the once a year, so enjoy the sport.

Dennis
--- tony estep [EMAIL PROTECTED] wrote:
 Just remember what every rider knows. If you ride on the street, you
 will fall once a year. It could be on an untraveled road into soft
 grass; or it could be in front of an oncoming 18-wheeler. But it will
 happen.


  I turned 40 last year and began seriously eyeing
  motorcycles.

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RE: [RCSE] motorcycles

2001-05-23 Thread tony estep

YMMV!


--- Cottrill, Flash [EMAIL PROTECTED] wrote:
 After 35 years of motorcycling it seem that one major accident for
 every
 10,000 miles ridden is a good (bad) average.
 
 Gordon.


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Re: [RCSE] why are ailerons top-hinged?

2001-05-23 Thread Adam Till

It's usually because ailerons have more upward deflection than downward, 
especially in a crow or spoileron setup. Having the hinge on top allows for 
this larger movement with a smaller cutout (gap) in the wing. That's why 
flaps are usually bottom hinged...greater deflection downward.

It all becomes academic with wipers however, since the hinge is pretty free 
to move sans-gap up to about 60 degrees (in most cases).

Cheers,
Adam


From: Arne Ansper [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: [RCSE] why are ailerons top-hinged?
Date: Wed, 23 May 2001 17:06:07 +0200 (Israel Standard Time)


hi!

simple question: why are ailerons top-hinged? i have two explanations:

1) they look better this way

2) since the pushrod is usually on the lower side of wing one can use
shorter control horn (by the thickness of the aileron), to achieve same
throw that helps to reduce drag somewhat.

since i'm putting the pushrod on the top of the wing i would like to put
the hinge to the lower surface. are there any aerodynamical consideration
which make the top hinged ailerons with continous upper surface more
desireable?

arne


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Re: [RCSE] why are ailerons top-hinged?

2001-05-23 Thread Harley Michaelis

Arne, they certainly look better, since nothing is much uglier than a
control horn sticking up. Another reason is that to get enough up
deflection, the gap would have to be very large if bottom-hinged and create
unwanted turbulance. If top-hinged, very little gap is needed to allow down
deflection.

I think you are a prime candidate for eliminating any control horn,
backplate, clevises, keepers, output arm,  threaded rod, exit guide, etc.
by using the all-internal, Rotary Driver System to operate the ailerons.

See http://www.proptwisters.org/rds2/ for details. See the SOURCES page. I
have a supply of the couplers on hand.
--
 From: Arne Ansper [EMAIL PROTECTED]
 To: [EMAIL PROTECTED]
 Subject: [RCSE] why are ailerons top-hinged?
 Date: Wednesday, May 23, 2001 8:06 AM
 
 
 hi!
 
 simple question: why are ailerons top-hinged? i have two explanations:
 
 1) they look better this way
 
 2) since the pushrod is usually on the lower side of wing one can use
 shorter control horn (by the thickness of the aileron), to achieve same
 throw that helps to reduce drag somewhat.
 
 since i'm putting the pushrod on the top of the wing i would like to put
 the hinge to the lower surface. are there any aerodynamical consideration
 which make the top hinged ailerons with continous upper surface more
 desireable?
 
 arne
 
 
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and unsubscribe requests to [EMAIL PROTECTED]

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Re: [RCSE] Celebs in RC Soaring

2001-05-23 Thread Chuck Anderson

At 08:09 AM 5/23/2001 -0500, you wrote:
RCSE member Mike Conte was on Wheel Of Fortune last night... I guess that 
counts.

--Bill

If TV counts, how about Jef Raskin.  I have heard his name mentioned
several times on the TechTV channel, most recently, last night.  Jef was
one of the principle developers of the early Macintosh computers.  He was
one of the first proponents of slope aerobatic competition and an early
developer of cheap, expendable slope models.  Anyone remember his fight
with RCM over a product review of his cardbard slope model?  As I remember,
they gave his kit a very negative review without even flying it.

Chuck Anderson
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Re: [RCSE] why are ailerons top-hinged?

2001-05-23 Thread Arne Ansper



 It's usually because ailerons have more upward deflection than downward,
 especially in a crow or spoileron setup. Having the hinge on top allows for

yes, right. i didn't think about it. thank you very much.

arne


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Re: [RCSE] Celebs in RC Soaring

2001-05-23 Thread Bill Harris

Nifty website.  It amazes me how realistic the special effects have become 
over the past few years, much better than the model-on-a-string effect of 
years ago.

I'm curious...  how were the Harrier scenes done in _True Lies_?  I assume 
that they really didn't have Ahrnohld flying a plane in downtown Miami.

--Bill


From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
CC: [EMAIL PROTECTED]
Subject: Re: [RCSE] Celebs in RC Soaring
Date: Wed, 23 May 2001 10:37:45 EDT

Pat,
Thanks for the kind words, but my work can hardly qualify me as a 
celebrity.
My team and I are just a few of the thousand or so individuals who bring a
movie to the big screen. We did win an Emmy for Visual effects on Miracle
Landing for the 1/10 737. Recently my team did the 1/4 scale Hueys for
Charlie's Angels, a nice explosion all done in the camera no CG 
enhancements,
The 1/4 scale aft fuselage and tail section MD11 for Castaway, Bell 212s 
for
Segals Exit Wounds, 1/6 th B25 for the Doolittle crash for Pearl Harbor, 
1/4
scale MDX 900 for Travoltas Operation Sworfdish, and WE have just finished 
14
Biplanes for Stuart Little 2 in various sizes and versions. I have worked
everyday since JAN 3 except Easter and Mother's day. I am now ready to 
start
training for the F3J finals and am desperately looking forward to some 
model
and full-size glider flying. By the way  I am lucky to have several people
you guys fly with helping me. LJMP crew who also fly RCsaiplanes are Steve
Addis, Dennis Brandt, Bob Pope, Dan Fink, and many others. You can check 
out
some past work at LJMP.com .Thanks Larry
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unsubscribe requests to [EMAIL PROTECTED]

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RE: [RCSE] How do you read a polar?

2001-05-23 Thread Clarkson, Tom

There is also an excellent book called Understanding Polars Without Math by
Bill and Bunny Kuhlman. I found it very helpful.

http://www.halcyon.com/bsquared/

-Original Message-
From: Arne Ansper [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, May 23, 2001 8:08 AM
To: Marc Webster
Cc: [EMAIL PROTECTED]
Subject: Re: [RCSE] How do you read a polar?




 I went to the selig website to look up some airfoils and the polars are
 completely greek to me.  How do you interpret the data?  Is there any

take a look at http://members.tripod.de/MartinHepperle/Airfoils/howdoi.htm

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

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unsubscribe requests to [EMAIL PROTECTED]



RE: [RCSE] motorcycles

2001-05-23 Thread Bill Harris

I haven't dropped the R60 in many years, so the yearly thing may not be 
true.  But the midset of being mentally prepared to drop the bike (or to 
have a mishap) every time you ride is good defensive riding, IMO.  It ain't 
like a car where you simply hop in and go somewhere.

Truth is, I've not ridden my R60 since I moved to Jasper 10 years ago-- it 
was in storge for 5 years, and I've been planning to get tires and a 
battery for the last 5 years.  Finally did this year and when I get time to 
put the tires on and check over the bike, I'll start riding again.  
Cautiously, until I get my sea legs back, then I'll start making longer 
trips.

--Bill



From: Gavin Botha [EMAIL PROTECTED]
To: Dennis Phelan [EMAIL PROTECTED], [EMAIL PROTECTED]
Subject: RE: [RCSE] motorcycles
Date: Wed, 23 May 2001 08:16:21 -0700

I have been riding bikes continously for over 30 yrs., and have competed in
everything from off-road Trials to 750cc Superbike and F1 Racing.  The once
a year thing is absolutely false, I have'nt dropped a street bike in over 
12
yrs. I agree with Dennis, ride smart and enjoy!

Gavin (garage stuffed with 5 motorcycles) Botha


Dudes,
Actually:
There are only two kinds of motorcyclists, those who have fallen and those
that
will.

There's no truth to the once a year, so enjoy the sport.

Dennis
--- tony estep [EMAIL PROTECTED] wrote:
  Just remember what every rider knows. If you ride on the street, you
  will fall once a year. It could be on an untraveled road into soft
  grass; or it could be in front of an oncoming 18-wheeler. But it will
  happen.
 
 
   I turned 40 last year and began seriously eyeing
   motorcycles.


_
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