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Author Topic: Big Jim's N30 designs Patternmsater  (Read 19660 times)

Offline Joseph Daly

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Re: Big Jim's N30 designs Patternmsater
« Reply #50 on: November 11, 2020, 03:36:50 PM »
Photo of Black Sunday.
From Jose art collection!

Offline Joseph Daly

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Re: Big Jim's N30 designs Patternmsater
« Reply #51 on: November 15, 2020, 07:18:12 AM »
Another shot of Black Sunday and the 900
Courtesy of Jose art collection

Offline Joseph Daly

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Re: Big Jim's N30 designs Patternmsater
« Reply #52 on: November 26, 2020, 06:54:44 AM »
Here is another of Jimís designs, the Griffon.

Happy Thanksgiving all!

Offline gene poremba

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Re: Big Jim's N30 designs Patternmsater
« Reply #53 on: December 20, 2020, 11:26:34 PM »
 I noticed that in the AMA magazine on page 94 of the October 2020 issue, is a picture of a young man that did pretty well with a Patternmaster. Steven Daly, Senior C/L  Stunt National Champion. Great to see a young man bring back the Patternmaster to the winners circle again.....Gene

Offline Joseph Daly

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Re: Big Jim's N30 designs Patternmsater
« Reply #54 on: December 23, 2020, 12:11:17 PM »
Gene,
That is my son Steven's plane. And it is based off a PM. If you read this thread, there were 4 PM's. Anyway, Steven's PM is based off the second one Big Jim built (Which is the B&W picture at the beginning of this thread). The cores for that plane were actually cut by Big Jim and they belonged to Hank Forbes, which then ended up with Jose Modesto, who in turn gave them to Steven. On the wings themselves was a note from Big Jim! Recently I have been trying to understand all of his designs and he had quite bit of them.
thanks
Joe

Offline gene poremba

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Re: Big Jim's N30 designs Patternmsater
« Reply #55 on: December 23, 2020, 12:28:54 PM »

 Thanks for filling me in. You must be proud. Big Jim seems to have been ahead of the curve for his time....Gene

  PS. Congrads to your son too!

Offline Air Ministry .

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Re: Big Jim's N30 designs Patternmsater
« Reply #56 on: December 24, 2020, 07:01:52 PM »
1:58:30. Jose Modesto . P.M. 46 (  ? , I assume ) Big Jim Memorial Contest . Flushing Meadow .


Offline Air Ministry .

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Re: Big Jim's N30 designs Patternmsater
« Reply #57 on: December 24, 2020, 07:04:38 PM »


J. D. . Do you have the wing chords ( & thicknesses ? ) .  H^^

Offline jose modesto

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Re: Big Jim's N30 designs Patternmsater
« Reply #58 on: December 28, 2020, 03:43:01 PM »
Thank you for posting the Windy video. I loved that PM.
And yes we have all dimensions for that plane in photo
We are working on a set of plans covering the Big Jim designs
Bob Hunt is creating new foam cutting templates for the foam wing and tail  components
Thanks again for posting video
As of today we have completed two planes.
1) BJ Sig Banshee
2) large PM
 Next  the high aspect ratio LJ 49/46 and the 3 RD PM 40/46 pattern master
All model plans will have options for Electric and Gas
Nose Modesto


Offline Air Ministry .

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Re: Big Jim's N30 designs Patternmsater
« Reply #59 on: March 08, 2022, 04:16:30 PM »
From 37:40 , L J Build ( foam wing ) .
1: 38 : oo Stab Alignment ! on the Strega I ran 3/32 over the full Stab / elevator chord .
To Avoid the Down Elevator at Neutral for even turn . Hanging it on a line , It Turns Even . Both Ways .

As the Stabs further aft & narrower , around 1/16 overall 'd be ' Appropriate . Or Bretts One Degree .
A  l  o  n  g   stick ea side , packed even and spacered same as stab root depth , run way forward ,
getting ' The Fine ' setting of slight Pos.  is vastly refined . Any Neg. would be Atrocious .
So dont leave it in the sun .

These  L  o  n  g   Flaps , you relly want rock hard dead evenly matched ( adjacent sheets from the mill )
Evenly TORSIONALLY matched . Twist Along Length holding each end . Lightest youve got .
But the SELECTION is on STRENGTH . TORSIONAL . MATCHED .

Purely on lightness you can find air loading has the tips still at neutral , on soft stuff . Al Rabe used FIVE Layers  of Glass Cloth , to stiffen & match Big Satio & Ro Jett plane flaps .
Missmatched torsionally , youll get Roll , Hinging & Yaw . So Itd never Trim Out at varying wind speeds / Pressures . SO TAKE YOURE TIME TO SELECT THE STIFFEST WOOD AVAILIACLE .

Even 11 Lb Stuff . Youll Need It !!!!!!!!!!!!!!!!!!!!! specialy if Dope & tissue rather than Epoxy / Polyester finish ( Where the skin strength is more ridgid  . Still . Dont Use Soft Light Wood on LONG FLAPS )



ditto . 6:45





See Jose for Drgs . or blow up previous photo . Comes out very straight .



« Last Edit: April 03, 2022, 12:27:43 AM by Air Ministry . »


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