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Author Topic: George Perryman's "Whistler"  (Read 5374 times)
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boca55
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« Reply #25 on: May 28, 2014, 02:49:31 AM »

Here is little Whistler from aeromodeller annual.
http://i43.photobucket.com/albums/e374/watt1992/130-131_zpsddc81568.png
George Perryman's "Whistler"
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Beazld
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« Reply #26 on: May 28, 2014, 06:04:19 AM »

Thanks for the tip about the sandpaper!  I'll add some to it.  My first one didn't last long enough to need it.
Somebody once told me if you still have a HLG it probably wasn't  a good one! Cheesy
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« Reply #27 on: May 28, 2014, 06:17:53 PM »

Thanks Boca!  Can you post in the plans gallery?
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Peter Hess
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« Reply #28 on: June 06, 2014, 08:15:11 PM »

Beazld:
How are you doing with Whistler Take 2?  I am eager to hear whether you have been successful in getting it trimmed to fly right/left or, if not, how you did get it trimmed to fly to your satisfaction.  Good luck.
I have postponed my Whistlers until I hear a bit more about how folks get it trimmed to fly a more or less typical pattern.  Instead of the Whistlers I intended to build, I have two Tiny Piglets that I should finish this weekend and get to start testing next week.  The Whistlers remain on my to-do-soon list however.
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Ratz
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« Reply #29 on: June 07, 2014, 02:17:34 AM »

Thanks Boca!  Can you post in the plans gallery?

The plan has been added to the Gallery.
http://www.hippocketaeronautics.com/hpa_plans/details.php?image_id=6700
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« Reply #30 on: June 07, 2014, 06:33:50 AM »

Thanks Ratz for posting in the Gallery! 
Peter, I haven't had a chance to trim Whistler #2 yet.  I think it is going to have a left glide since i noticed a bow in the fuse Tongue. I am a noob when it comes to FF and i am hopinf to make it down to NC for CAFFA's monthly gathering to see what the real FF'ers can teach an old dog! Lol!  I'll be sure to post my results!
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FLYACE1946
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« Reply #31 on: February 28, 2016, 09:43:14 AM »

FWIW  I am now in the process of trimming my Whistler for an upcoming HLG event coming in April. Sure enjoying myself.
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« Reply #32 on: February 28, 2016, 11:26:19 AM »

I have long been a Perryman fan, and have been looking for a way to transform my pent up energy into bliss.
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Art356A
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« Reply #33 on: February 28, 2016, 08:59:29 PM »

I never saw this thread until today. I built a 12" Whistler a couple of months ago, and found it untamable. Adding a little more dihedral to the outboard tail panels helped a bit, but she never flew like the old Thermics of my youth. You couldn't launch those thing wrong. I read thru the entire thread, looked at the wings, got out a couple of sanding boards (1" x 6", 220 paper), and went to work. 10 or 15 minutes of fat removal from the aft 70% made a big difference in the model's behavior. It was swooping into a departure stall, and a .031 x .062 Gurney flap 1.2 long under the left stab fixed it.

Then, as conversion to CLG had been mentioned, I rigged it with a hook in maybe the right place, maybe not, but it seems to work. The remains of the paint mixing stick which had donated the fuselage now did double duty as a launching stick. I reinforced the glue joint on the sub-rudder and launch with that. This appears to work well and I'll have to get it out to a real field next week and try it out there. What is the standard catapult rubber spec? I'm using two 6¼" loops of 1/8 because that's what fell to hand, but I know that's wrong.

What should the Little Whistler weigh? Mine's 12.409 gm.

a.
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« Reply #34 on: February 29, 2016, 01:16:21 PM »

I got the Little Whistler flying well. Catapult launched at approx 45º right bank and 5-10º elevation, but that's in a very small area with lots of trees.  This should change when I get it up to my 40 acre field.  

Then I took the advice in the thread and applied it to the Misguided Missile. I took a bigger sanding board with coarser paper, sanded the lumps in the aft end of the airfoil flat and thinned the TE down as much as I dared, test flying between steps. I ended up with 1.3 grams more noseweight, 3 inches of Gurney flap under the stab, and a nice stout CLG hook installed. The plan calls for balance at the TE for the Chuck glider application. It's now 3/8" fwd of that, which is probably better for a CLG. On a fairly gentle cat launch (45º Rt/5-10º Up) it gets about 20 feet up, transitions with almost no loss of altitude and glides dead flat until it hits something. Remarkable what absorbing advice from one's betters and then some fine tuning will do.

I also made up a regulation launcher (two 9 inch loops of 1/8 on a 6" dowel). We'll get the gliders and the two Elves up to the field Thursday or Friday. Maybe the Twin Fins, too. Here's this week's fleet.
a.  
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« Reply #35 on: February 29, 2016, 01:31:06 PM »

You will have a busy flying day, Art  Grin Grin Grin Make two more push-up's to be prepared.

Urs
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« Reply #36 on: February 29, 2016, 02:00:44 PM »

Art you made a "Spirit of St Elf" I see... Roll Eyes
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« Reply #37 on: February 29, 2016, 04:45:48 PM »

That push-up was two years ago. But not a problem, they're both cat launch now. The rheumatologist won't let me do HLG's. Push-ups are optional.

Crab, Pete Fardell named it…Sprite of St. Louis.
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My arms are so weak, it's like that pushup I did last year was a total waste.
FLYACE1946
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« Reply #38 on: March 01, 2016, 05:13:12 PM »

I see the cg is marked on the Little Whistler but that feature is missing on my Whistler plan. If you know where it should balance I would appreciate you letting us in on the secret location. Also      How do you hold it when launching  the Whistler. Let us know if you can help here ok?

THANK YOU VERY MUCH.
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FLYACE1946
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« Reply #39 on: March 04, 2016, 03:24:33 PM »

UPDATE As of 4 March 2016 the Whistler I found flies best when launched holding the fuselage right under the wing leading edge. I got it going by trying to hold it behind the wing with a pointer finger placed behind the wing trailing edge. No good most of the time. Now I will be cutting away the finger rest  I thought the Whistler needed. My whistler goes up, turns right and glides level until running out of altitude. No where does it start to stall. Just gotta be sure to launch it horizontal, also not in too much of a hurry. The picture of my Whistler will show up here eventually. I am already pleased to see it flying as well as it does. Probably other fights will be longer than the 20 or so that flew today in the 15 to 20 second range. Gusty wind kept me unsure of what to expect from the next launch. I hope George Perryman told somebody what the ideal weight would be. I haven't even weighed mine yet. It does float down and is going slow when the touchdown occurs.
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« Reply #40 on: March 04, 2016, 03:44:12 PM »

What I like about Perryman is he reminds me of my Aunt Addie, who made a totally off the hook mincemeat pie. It was a State Fair Blue Ribbon winner... we ate it before the turkey every Thanksgiving and she would GLADLY share the recipe, except.... for a few tiny but major ingredients. Nobody could match it.
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FLYACE1946
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« Reply #41 on: March 04, 2016, 05:18:32 PM »

What Gentleman George liked to admit: If anybody beats me with one of my designs he will sure have to work hard. George built in the air and didn't use a building board. He also never wore glasses. He was truly one of a kind. Sure do miss seing him and talking to him on the phone. Roll Eyes Roll Eyes Roll Eyes Roll Eyes Roll Eyes Roll Eyes Roll Eyes
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« Reply #42 on: March 04, 2016, 09:30:05 PM »

Mine balances at 58% of the root span.
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FLYACE1946
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« Reply #43 on: March 05, 2016, 03:27:59 AM »

Thanks DHfan that is very helpful.
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« Reply #44 on: March 05, 2016, 12:16:28 PM »

George at a TTOMA indoor contest in 2002.
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FLYACE1946
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« Reply #45 on: March 05, 2016, 01:32:21 PM »

Yes that is the man all right. Usually wore flight suits and then the biggest smile of us all. Thanks for the snapshot. Did you ever witness his nocal chambermaid when he put it in action and would have it land in the basketball net having been launched from half court ? He was really good at winding,building, and designing models for us. 
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FLYACE1946
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« Reply #46 on: March 21, 2016, 11:07:18 PM »

I just finished another Whistler and after balancing it I took out my scale. The weight came in at 1.5 grams, Sure is much lighter than the last one. Took it out for flight after the wind calmed down and it was fling between 15 and 20 seconds.
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