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Building Tips and technical articles. => Building techniques => Topic started by: Air Ministry . on April 06, 2015, 10:04:55 PM
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Seeing I accidently crashed someonesles P 51 trip , will throw these here , as its got some Building Tecniques . Descernable clicking on the pretty pictures .
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(http://stunthanger.com/smf/index.php?action=dlattach;topic=38778.0;attach=160628;image)
youll have to click on these others here " http://stunthanger.com/smf/index.php/topic,38778.0.html "
to get the detail , if your after it . Hardly discernable on the pansey wee things . there down below .
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(http://stunthanger.com/smf/index.php?action=dlattach;topic=38778.0;attach=160630;image)
(http://stunthanger.com/smf/index.php?action=dlattach;topic=38778.0;attach=160636;image)
(http://stunthanger.com/smf/index.php?action=dlattach;topic=38778.0;attach=160638;image)
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At the moment its heading this way .
(http://www.mustangsmustangs.com/p-51/p51who/images/86.jpg)
Had it all done very nicely , with the scoop etc in 98 , but a ascarlewt woman said she " Dropped a Load of Steel through it "
and a few others . I saw here destroying them . Seqquentially . A years work down the drain & a foul odour for Melbourn fo life ,
in my books . ANYWAY .
Threw this togeter last week or so . But sides are to soft ' Contest ' 3 / 32 . Planks are 1/8 & lower under ( shown ).
The tops a sheet of 1/4 let in between upper 1/8 runners . BUT i got it ( pressed Down 0 to low forward .
Working at 3 am with wombles tittering adjacent to get me Isomnic .
Tip ribs are 60 apart . Owes a lot to Al Rabe but designed outside his formular , though parralell .
Scale Dimensions for datumns , Tryn ta keep the aft light ( Tissue Cover ) and C.G. Fwd , with a
Airfoil to suit , so it ' Points ' a way , an hopefully ' hooks in ' to the turns , and doesnt bounce .
We Shall see , a way to go yet . doghouse up next - the F51H type as in the picture .
Ive used this ' planked Curve ' tecnique severaly . But the P 47 'l have a be Moulded if its for The Stalker .the bog Stalkers .
This gets you a P 51 without a lot of set up , but ou need to use a ruler to 1/32 of a inch . which is o.k. if you can pick a tength of a m.m.,
But a eyeglass , magnifying specs , strong light (s) etc arnt a bad idea .Easiest to lay out cut grid on formers , Tracing wobles it and
pasteing a photocopy on seems to get it out, nomatter how much cares ensued . So A TASK is to ' parrallellogram ' the bulkheads
and New Blade in the knife , trace cut the angles. And Mind the Fingers with the new blade - as itll go straight though em .
The G 51 turns a dual 11 x 5 Zinger ( 4 blade ) effortlessly , if it comes to it . But the old Como 51 is virtually a last pdp ST 60 cousin
so anticipate itll be fine with a 12 x 5 zinger .The G 40'll fit too , if I go fine pitch ( 4 in . ) seems at 20 knots 4 in is better ,
but as the wings just sheeted LE & capstrips aft of the spar , im not anticipateing its my ' windy weather ' model .
CONSTRUCTIVE criticism & discussion welcomed .
much to do and others on the stove , so it might not be nailed together ill christmass . So dont hold your breath .
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Did this start out as a kit? What/who's design?
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CONSTRUCTIVE criticism & discussion welcomed
Matt,
The Mustang is a great aircraft to model, Seen the real deal a few times.
I'm glad you have no issues talking about your construction. It's good to share so thanks for that. H^^
About your "planking?" You said planking right?
How did you cut the planking strips?
I believe you said you used 1/8" thick planking. Could you have used 3/32" thick planking?
Why did you use planking?
I gotta tell ya, I'm really curious about your choice of using planking on your fuselage. ;D
Have you ever used planking on a CL model before?
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" Why did you use planking? "
I Tried Ferro Cement moulding , but it was a bit heavy ! . ;D >:D <=
Welll , . . .
' planking ' is generally something about right , maybe .
The sides are 3 / 32 or suchlike , but the ' curves ' need to be caught . So strips of sheet are nailed on , trimmed to the next ' cut line '
and the next strip added . Three Runs over sides & a 1/4 sheet let in for top . The rear underside needs only one run @ 45 deg .
Lets you capture the curves , carving back at the longitudeinal joins first with 80 / 100 Wt. on a block , or the dreaded coarse file .
as long as it doesnt slip .
Theres a TYPHOON ( More Violent Hurriocane ) in the design section - which youll see how it works .
Planked things five centuries ago. Butt Joined Cliker Built . ;D
SEASONED timbers essential , which is the problem with the grotty sides - though the dope stiffens it up .
the sides were GREEN timber , though thats not the half of it , when wood cracks across the grain or chunks , STORED - it aint quite right . :(
Inteligently done , the 1/8 strip ( these are around 9/16 max - then trimmed to conture ) act as lngitudeinal co joined spars
so is immensly strong / ridgid . Which is the objective. No flexy fliers . Wobbly Wizzbangs were didaianed by even a pre unit Bonneville.
unless it was a 59 .
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Its designed by Moir ( who's the revolutionary Labour Movement according to wiki , but I thought it was ' Me ' . :-\)
Ive Got a KIT after Ive cut out all the pieces ! . Free Firtytwo and youd end up holy . %^@
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Im at the limit of my whittles electrickerally transfering the pictures , as the pix 500 thingo , so have to do them one per wotsit . IF I can manadge THAT > n~ >:(
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:P
[BAHG . wont delette . :(
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More infernal pictures , after 1/2 hour of . . . .
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The Cowl , 1/8 ply ' ingress ' , rest dual laminations of 1/ 32 ply over spay can & 1/4 x 3/8 cedar runners , cause they were there .
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How to cheat authoritively . ;D
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