[RCSE] source for black poplar veneer

2002-01-08 Thread Jon Syvertson

Greetings
Is there any good source for comparison of black poplar veneer compared with 
other hardwood veneers.

I notice that many of the sailplanes I'm seeing with wood veneer wings that 
are relatively low weight are using black poplar.

What is the thickness of these veneers.

How does obechee compare to black poplar.  How does black poplar compare to 
other poplar wood veneers.

Anyone with experience with this type of wing construction?

Thanks,

Jon Syvertson

[EMAIL PROTECTED]


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[RCSE] Repair technique on openclass foam/cf wing

2001-04-04 Thread Jon Syvertson

Yesterday I was out for the first time this year.  Almost my last flight of 
the evening I was launching.  At the top, I was gaining speed for a nice 
zoom when bang / wap !  Whats this? . . . My left wing looks like I have a 
oversized poly bend in it the way my oly 650 looks, only this is a 80/20 cf 
over foam wing, straight wing.  A Friend is yelling lookout! thinking I'm 
going to be spiraling in at big speed.  My plane takes a leap left and then 
its flying.  I guess I lucked out because I had all my controls left.  The 
broken wing went back to a slight poly bend in it & I had all my controls 
including flaps.  I flew it into the wind a while until I was low enough & 
then kicked in the flaps for a landing.  I was lucky.  The thing looked like 
it should have had another poly bend in the other wing.

The damage was to 1 wing.  I have complete a split on the top of the wing 
and about 6 -8 inches of delamination on the top side.  It looks like the 
bottom side is ok.  The foam on the top side is scrunched a bit.

What would be the best way to repair this.  I've got 80/20 cf, 3 oz fg, 2 oz 
fg on down to .75 oz cloth and mylar and vaccuuming stuff.  Just looking for 
ideas on fixing this before I dive in.

Thanks for any help. . . Jon
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Re: [RCSE] Reversing Hitec Servo

2000-12-25 Thread Jon Syvertson

For those like me that do not know electronics, It would be far simpler to 
buy a servo reverser.

See following web site
http://www.ohmark.co.nz/reverse.htm

Jon Syvertson

>From: "Robert Massmann" <[EMAIL PROTECTED]>
>To: "Stephen Syrotiak" <[EMAIL PROTECTED]>
>CC: "Soaring Exchange" <[EMAIL PROTECTED]>
>Subject: Re: [RCSE] Reversing Hitec Servo
>Date: Mon, 25 Dec 2000 13:57:28 -0800
>
>You will destroy your servo if you switch the supply power leads. To 
>reverse
>a servo, switch leads that is connected to each end of the pot and leave
>variable resistance lead alone.  Also swap the power supply leads to the 
>the
>motor. You may have to re-center your servo after the wires have been
>switched.
>
>Hope you understand.
>
>
>- Original Message -
>From: "Stephen Syrotiak" <[EMAIL PROTECTED]>
>To: <[EMAIL PROTECTED]>
>Sent: Sunday, December 24, 2000 12:12 PM
>Subject: [RCSE] Reversing Hitec Servo
>
>
> >
> > I'm looking at a new 85mg+.  This servo needs reversing. There are 3
> > wires running to the pot; Red, yellow, and green.  Which two of these
> > three are  the pos. and neg. wires?
> >
> > The + and - feeding the servo will be switched when this unit is
> > hard-wired into the wing.
> >
> > Many thanks.
> > --
> > Stephen Syrotiak
> > Southern Connecticut
> > RCSE-List facilities provided by Model Airplane News.  Send "subscribe"
>and "unsubscribe" requests to [EMAIL PROTECTED]
> >
> >
>
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[RCSE] RDS Retrofit questions

2000-11-26 Thread Jon Syvertson

Hello Harley,
Looks like I had problems with the original post
Hotmail has this new richtext format option that must have some bugs in it.  
Here is the original post.  I will cc: [EMAIL PROTECTED]

Jon
==
Greetings . .

I am going to be retrofiting my open class ship with RDS.  I've read the 
material Harley M. has on RDS on retrofitting for RDS.  I've got some ideas 
but thought I'd see if anyone else had something to that this as this is my 
first time at this.

The wing I'm working on now is a carbon fiber wing.   I've removed the 
servos and cut the carbonfiber skin back about 1/4" or more in a square 
around the hole for the servo and then filled the hole with scrap foam.  
What do you use to fill the slots around the foam that fit it in? just fill 
it with spackling and sand?  I'm then going to lay down a square of cf cloth 
to fit the square I removed, and then overlap out about 1/2" more with 2 oz 
fg with an even bigger square of mylar so it is smoothed out.  Then I'l tape 
this in place and put it in a bag with breather over the area.   I just 
wanted to run this by the soaring exchange because it seemed too simple.

I've gone through Harley's RDS pages and think I understand most parts of 
it. I mostly wanted ideas on fixing the old servo holes before cutting new 
ones.

Thanks,

Jon Syvertson

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[RCSE] kevlar hinges on carbon wings - aftermarket

2000-11-20 Thread Jon Syvertson

Hello,
I've been thinking about whether it would be a worthwile effort to put 
kevlar hinges on a set of wings I've got.  Is it possible to put kevlar 
hinges on a typical set of wings that have already been manufactured and cut 
out and taped for regular tape hinges.

Just wondering if anyone has done this before?

I'm thinking the hing would be better than a typical tape hinge but not sure 
if I wanted to go to the work of doing it.

Jon
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[RCSE] hs85 MG - slop

2000-11-20 Thread Jon Syvertson

I have a single HS85 MG servo on a flap that has a lot of slop in it.  What 
is the typical way to fix this?  Is there a way to repair it or do I need to 
replace the gears on it.

Thanks,

Jon Syvertson
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Re: [RCSE] RV: JR 347 For a full house sailplane..

2000-05-29 Thread Jon Syvertson

Fernando,
You should be able to do about everything you want to do.  I've had guys 
tell me they didn't like it, but when I checked out some articles on this 
radio, It would do everything you can imagine.

Like; Crow,Flaps with elevator compensation. elevator to flaps programed to 
take effect when a switch is turned on. full trailing edge camber and 
reflex, launch flaps programmed to a switch. and of course all the regular 
stuff like subtrim, trailing edge endpoints, ail diff, eil to rudder and 
turn the mix off with a switch.  I'm sure I'm missing stuff.

I,ve never programmed crow however but Sherman Knights article says you can. 
  I'm sure the newer radios are easier to program however but I've no 
experience to say.

FYI - Jon Syvertson

For more details here is Sherman L Knights article.  This should tell you 
most things about the radio you would want.
http://www.nesail.com/progjr347.html



>From: "Fernando Magnetti" <[EMAIL PROTECTED]>
>To: "RCSE" <[EMAIL PROTECTED]>
>Subject: [RCSE] RV: JR 347 For a full house sailplane..
>Date: Mon, 29 May 2000 19:28:50 -0300
>
>
>- Original Message -
>From: Fernando Magnetti <[EMAIL PROTECTED]>
>To: RCSE <[EMAIL PROTECTED]>
>Sent: Sunday, May 28, 2000 11:30 PM
>Subject: JR 347 For a full house sailplane..
>
>
> > I have a chance to get a JR 347 but i want it to fly a full house
>sailplane
> > (six servos, batterfly, etc)
> > something like an F3B.
> > Its Ok this radio for this?
> > It have all the mixes that I need?
> >
> > Fernando Magnetti
> > [EMAIL PROTECTED]
> >
> >
>
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Re: [RCSE] Just curious. . scratch-builder headcount

2000-05-15 Thread Jon Syvertson

Hello Harley,
  Count me in as a scratch builder.  However I do not claim to be a 
designer, I've built a couple of originals of my own in the hlg size using 
composites.  I've built the midget that was published in rcm,  it was a bit 
sluggish with std radio equipment however.  Also basically did some kit bash 
of a saggitta 900 as a composite ship with the help of another builder.  You 
know my current project because it is your design, the Genie.  I've only 
been at it a couple of years now after being out of it for about 10 now.

>From the land of Pigs and Corn . .  Jon


>From: "Harley Michaelis" <[EMAIL PROTECTED]>
>To: <[EMAIL PROTECTED]>
>Subject: [RCSE] Just curious. . scratch-builder headcount
>Date: Mon, 15 May 2000 18:38:22 -0700
>
>Just wondering what % of subscribers here do scratch-building. Please be so
>kind as to sign in if you do. I'll relate the response to 1,000 subscribers
>and see what the figure is and report back to the list.  Sometimes I wonder
>if I am the only designer, builder, flyer, crasher, repairer left on the
>planet. . . at it since age 8, born 1921. I estimate I have scratch-built
>at least 500 models of all kinds including over 100 original R/C
>sailplanes.  It has been an immense adventure in experimentation and
>creativity.
>
>Harley Michaelis, LSF023,  26 S. Roosevelt, Walla Walla, WA. 99362.
>(509)529-2562   RDS website: http://www.proptwisters.org/rds2/
>
>
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