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General control line discussion => Open Forum => Topic started by: Scott Richlen on December 07, 2017, 06:42:58 AM
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Being that it is winter and time for building season to be in full tilt I started cogitating on a new build. Except I'd like a new build that doesn't quite look like everyone else's new build. What to do? What to do??
Well, last fall AMA had a sale on its plans and I had gone a bought the plans for Windy's Mig Sweeper.
Oh-oh! Guess where this is going?
A new build that doesn't look like everyone else's new build by looking like an old build? Hmmmm....
Since the Mig Sweeper has already been built (just a few years ago, ahem!) I would obviously have to update the plans to modern standards to have an actual "new" build. Follow the logic so far? No? (Okay, well neither do I , but why stop now?)
So, obviously(?) I roll out a second set of plans. The current "gold standard" for stunt-plane redesign guidance (IMHO)
Ta-da: the T-Geezer.
After carefully comparing dimensions I request help from my trusted building assistant, Igor (but pronounced Eeee-gor, with a bit of a fake English accent.)
"Eeee-gor: hand me my skissors and also get me the bucket of white-out and my 6 inch Weather-beater house paint brush. I am about to do magic...
oh, yes, and also bring the Mig Sweeper into the 21st century!"
Wait 'til you see the pictures!
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I am waiting. D>K D>K D>K
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Sorry for the delay Doc. Busy couple of days.
So I sectioned 4 3/8" out of the nose and 5 7/8" out of the tail! It is now officially "de-sweepered."
Interestingly, when you do that it actually looks a bit USA-1 ish.
I'll see if I can get a good shot of the fuselage plans after all of the white-out dries... ;D
Now I gotta figure out what to do about the wing....
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Oh, and I also cropped the tail height and cut a small vertical section out about mid-rudder.
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See? Sort of USA-1 like. No?
Like all the white-out?
Now I gotta figure out what airfoil to use - don't know if you can make it out or not, but I've reduce flaps and stab and elevator to Geezer dimensions.
And what should the span be??
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John said that my Subject line was too obscure and that no one understood what it meant. So I fixed it.
Well, that didn't work! How do I modify the subject line so it is changed at the "forum" level?
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does this mean its gonna be a Eager Sweezor ?
Willyou need a Bigger Car now too , or Was that the Reason.
Knactually , wing'n all - mightpay todo cardboard outlines to get a sense of proportion .
Me Faughts'd be lower A.R. Tailplane ,maybe Fancher/Walker airfoil ??
HOWEVER ; long wings want long moments , or a fair bit of taper , like a U 2 . Though a T tailwould help, there . ;D S?P
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Heres a link tothe Mig Sweeper setup; http://library.modelaviation.com/ma/1987/3/mig-sweeper
which is Greenaway derived series III .
Not discimilar totheese
(https://stunthanger.com/smf/nostalgia-30/big-jim's-n30-designs-patternmsater/?action=dlattach;attach=56817;image)
Bin clowning with drg , 2 in round things , makes fuse just under 36 in,would / will use 60 span , for a 'LongJim'. Jose Modesto plan/ picture .
This actually looks fearfully modern : (https://images.duckduckgo.com/iu/?u=https%3A%2F%2Ftse2.mm.bing.net%2Fth%3Fid%3DOIP.X1duZwpzrM3Y9YrUOALD-gEsDd%26pid%3D15.1&f=1)
and is dimensinally same as the mig . ( predeceeds it ) .
Would think it'd be a good candidate for Igors flap system .
THIS is ANCIENT .
https://images.duckduckgo.com/iu/?u=http%3A%2F%2Fi.imgur.com%2FxRkQiMg.gif&f=1
(https://images.duckduckgo.com/iu/?u=http%3A%2F%2Fi.imgur.com%2FxRkQiMg.gif&f=1)
Apparently techniques have improved since then , though .
post addenum .
Just listening to " Windy Spinners " Tape . At 1:04 he says of Sweepers " & fourth was really Larry Scareinzi lue Angle in disquise ".
( Being the B A is a small .60 ship , he first modern type S?P one could just start , and finish , there . VD~ . . . . . . ) H^^
at the risk of being tedious , we'll put the picture on . Seeing as the cats out of the bag . Who'd of thought , under rated , eh .
(http://www.pampacl.org/images/phocagallery/1960sContests/thumbs/phoca_thumb_l_yfuywj43hz1.jpeg)
was to iconoclastic to omit , borrowed curtosy P.A.M.P.A.
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I was thinking you wanted to restyle David's plane to look like Windy's old Sweeper, i.e., throw away the Sweeper plans and rework the ThunderGazer plans to look like something else. To do otherwise.... ;D Steve
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No Steve, that would be the easy (and probably smart ;D) thing to do. This is about "if you took an icon of past years and modernized it to today's standards, what would you do?" And since I can't afford to buy a new vehicle as Matt pointed out, I have to start by shrinking it. Considering the size of the Sweeper, I could build it stock and then discover that it wouldn't fit through any of my doors - stuck forever in my basement!
In a sense I am sort of redrawing the Geezer plans in that it is the reference for moment arms and chord lengths. But haven't decided about the wing. Not sure how I would mount the back part of trike gear in a geodetic wing like the Geezers. Since I am trying to modernize it, I would like to use the geodetic wing or similar.
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Sure seems like this Scarinzi guy's name comes up in a lot of C/L circles in regards to such things as "firsts", "innovations", "pioneer"...
P.S. Having seen Larry's original Blue Angel in person, after all these decades, the finish is still SPECTACULAR. He was/is a master craftsman.
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So, how do I mount the rear set of landing gear (for a trike gear system) in a geodetic wing like the ThunderGeezer?
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I haven't looked at the internal structure of that wing. I have a wing that I have used with wing mounted gear. I was able to use the same wing and gear block location and rearward sweep the LG wire and use for trike gear. I didn't need to move the mount point back.
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Just thew this picture on the other gear fred .
(https://i.ebayimg.com/images/i/131780295934-0-1/s-l1000.jpg)
Running the rib thru aft of the spar , undrside at least , ( you wouldnt leave to to bit under on the covering aft of the spar ,
Youd get a workable system .
Or Carry two nose ribs through , say 2 inch aft of spar or so , fit the shear web , then ply doublers ( 1/16 lite ply )
to inside each for a flat 1/8 ply gear mount / diaphram .
OR ;
a Swiss Cheesed flat ply plate from shear web to Fr t E Web , horizontal / flat . Youd need a few gusstes to the spar or suchlike .