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Author Topic: Polly B glider.  (Read 827 times)
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gossie
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« on: January 02, 2020, 10:57:34 PM »

Have just finished a 17in span POLLY B glider....I have an original plan from 1949, but it is on Outerzone if you wish to build it.
My Dad built one of these in 1949 and we often flew it nearby to our home in Melbourne Victoria Australia.
It weighs 30 grams as is but will likely need a couple of grams on the nose to have it flying well.
Attached files Thumbnail(s):
Polly B glider.
Polly B glider.
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gossie
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« Reply #1 on: January 02, 2020, 11:14:48 PM »

Thanks. Pics ok now.
« Last Edit: January 03, 2020, 01:11:26 AM by gossie » Logged
OZPAF
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« Reply #2 on: January 03, 2020, 03:54:03 AM »

Nice looking vintage chuckie! You can't have been too old then Gossie!

John
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gossie
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« Reply #3 on: January 03, 2020, 06:01:17 AM »

I was eleven.
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OZPAF
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« Reply #4 on: January 03, 2020, 05:05:46 PM »

That's about the age or a year or so earlier that I really started to throw bits of balsa around and call them gliders Smiley I had one high aspect ratio chuckie of about 20" ws that had to fly - after all the tips were shaped like feathers Smiley It didn't - not very well anyway. Smiley
Good luck with your nice looking Polly.

John
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-John-
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« Reply #5 on: January 12, 2020, 01:33:17 PM »

Hello gossie, thank you and OZPAF for posting about this glider. Interesting that you have an original plan(a bit of envy here), and that you experienced it as a child.

The Polly B seems to have a number of features in common with modern gliders, including a pollyhedral wing, long tail moment, and fin mounted on top of the stab;
remarkable that it was designed quite a number of years ago. In doing reasearch, it looks like it may have been the first HLG to top one minute indoors(indoor thermals &
Chicago Aeronuts the other possibility), and possibly 70 seconds also(Joe Foster variation); Lee Hines may know.

How does your new model fly?

P. S. hope everyone is OK down under in regards to the fires.
« Last Edit: January 12, 2020, 01:53:33 PM by -John- » Logged
gossie
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« Reply #6 on: January 12, 2020, 04:15:19 PM »

Hi John, all ok here regard fires, but back in September they were close and we had lots of smoke where we are on the coast.

POLY B got an outing last week at the park.  Even though that long stick fuselage is 1/4in rock hard balsa a slight up slightly crept into it, but I tossed it anyway.

Got it up there and it was waffling around a bit not turning well, even with some built in tail tilt for a left glide turn.   Couple of times it went up high but nosed straight down with no damage.
It's home waiting for the next outing after having taken tail off with a very fine saw, taken a little wood off the rear on a slight angle so as we should now have zero zero incidence.
Also cemented the tail back on with more tilt, and a fraction right rudder bent into it to keep the nose up under power.   So that's where we are at the moment.
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USch
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« Reply #7 on: January 12, 2020, 04:23:48 PM »

What a nice, modern looking HLG, Gossie. Modern means "before discus launch" models  Wink

I always thought POLLY was a HLG from the late '60, coming from the Texas boys. Well, you always learn something new.

Urs
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gossie
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« Reply #8 on: January 12, 2020, 06:07:34 PM »

Hi Urs, great to hear from you.
When I get the chance I shall take a pic of the 1949 plan and put it up via my phone.

Are you aware VERY nice things were said of you last week on Facebook about that magnificent F1C you built and flew at the 1977 World Championships, and where I first saw you fly it.
I think you might have said you still have it all boxed away.
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USch
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« Reply #9 on: January 12, 2020, 06:16:21 PM »

OK, Gossie, let's make a deal (from that remark you can understand that I follow closely todays politics  Roll Eyes )

You put up the plan of the POLLY and I will open the F1C box and if the worms had not eaten away the models take a picture  Grin

Urs
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gossie
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« Reply #10 on: January 12, 2020, 07:03:01 PM »

Urs, the deal is done......I just realized I put the plan up when I started the thread........So we REALLY want to see that magnificent machine, PLEASE. 
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gossie
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« Reply #11 on: January 12, 2020, 08:06:02 PM »

Site does not like large pics but will try this one.
Attached files Thumbnail(s):
Re: Polly B glider.
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D/T
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« Reply #12 on: January 13, 2020, 05:36:36 AM »

The plan and mag article are on outerzone.co.uk - search 'Polly'. A fine looking model, ahead of its time, I should think.
Thanks for introducing it.
Don
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NormF
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« Reply #13 on: January 13, 2020, 07:14:29 PM »

I always thought the Polly was a Joe Foster design. Looks like it was an Oakland  Clouduster group project. Just spoke to Lee Hines, lets see if he will chime in.

Norm
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gossie
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« Reply #14 on: January 13, 2020, 07:43:11 PM »

There is a great looking Joe Foster HLG in March 1953 Aeromodeller magazine that I built long ago. Bit different to POLLY.
It was a good outdoor HLG.  I might even repeat that exercise?
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gossie
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« Reply #15 on: January 14, 2020, 09:01:57 PM »

Just to keep you up to speed I did take Polly to the park before it being a beautiful summer’s day.
As said earlier I adjusted the fuselage to give zero zero incidence and put more tilt on stab for more left glide turn and a touch more right rudder squeezed in.
I overdid the tail tilt even though it’s flying quite well, just too tight to on glide.
But it is nice and waffley bouncing around at height so ease the stab off, a little less tilt and I think we will be just about there. 
And if you care having not thrown a chukie hard in a long time I can feel my arm.   More practice needed no doubt.
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« Reply #16 on: January 14, 2020, 10:16:08 PM »

What a nice, modern looking HLG, Gossie. Modern means "before discus launch" models  Wink
I always thought POLLY was a HLG from the late '60, coming from the Texas boys. Well, you always learn something new.
Urs
There is a later "Polly"  by Bill Blanchard, similar to the 1948 "Polly"
30 years later!

Kitted years ago by Campbell's Custom Kits.
Looks like it is still avalible at -
http://retrorc.us.com/hlgandclgcompetitiongliders.aspx

Here are the plan and article -   (hope the attachments post)
Attached files Thumbnail(s):
Re: Polly B glider.
Re: Polly B glider.
Re: Polly B glider.
Re: Polly B glider.
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gossie
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« Reply #17 on: January 14, 2020, 10:44:06 PM »

Yes thanks for that and interesting.
It was also mentioned on Facebook.
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OZPAF
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« Reply #18 on: January 15, 2020, 03:07:19 AM »

Fascinating coverage of early HLG design and trimming. I first started having a bit of success in the late 80's after reading an article on HLG by Dave Thornburg in the series he was writing for Model Builder at the time. Although Dave was a very successful RC Glider pilot (Bird of Time) he also had a love of FF and particularly HLG.

It's fascinating to see the difference in approaches.

Thanks for the post.

John
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USch
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« Reply #19 on: January 15, 2020, 04:42:56 AM »

There is a later "Polly"  by Bill Blanchard, similar to the 1948 "Polly"
30 years later!

Thanks Pete, that's exactly what I had in mind.  Cheesy
Bill Blanchard with Polly, Bo Weevil from Don Chancey, Flash from Dick Mathis, US Kid from Tom Peadon. Dont know if Bill B. is from Texas, but in my memory they form a unique team.

Urs
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OZPAF
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« Reply #20 on: January 15, 2020, 05:39:49 PM »

Radical RC still carries many of these old classic HLG's and gives a brief description  https://www.radicalrc.com/category/Free-Flgt----HL-Gliders-148

John
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gossie
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« Reply #21 on: January 15, 2020, 05:58:40 PM »

Blanchard Polly is much newer and different including a DT B
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-John-
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« Reply #22 on: January 28, 2020, 08:51:12 PM »

There is a great looking Joe Foster HLG in March 1953 Aeromodeller magazine that I built long ago. Bit different to POLLY.
It was a good outdoor HLG.  I might even repeat that exercise?
You have a vote in favor!

Thanks to EboPete for the Blanchard article also, thats the first I've seen of it.
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