Author Topic: Northrop N-9MA  (Read 21843 times)

Offline jcf

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Re: Northrop N-9MA
« Reply #25 on: December 08, 2014, 10:12:44 AM »
Graham White's trailer setup has exactly zero to do with an actual airframe installation.
It's all his own design.
Center to center on the axles is 36".

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Offline Old Wombat

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Re: Northrop N-9MA
« Reply #26 on: December 08, 2014, 10:45:03 AM »
Didn't know that.

So that brings it down to about 6' 6".

What I did know was that the frames we used to support the R-1820's when they were removed from our Trackers, back in the day when I was working on them, used a minimum 3" square-tube steel frame. I made a reasonable assumption that the frame used to support this engine was approximately the same. Looks like I was wrong.

We had one that used 4" square-tube framing but, knowing the RAN, that was probably a left-over from when we operated Sea Furies.
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Offline jcf

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Re: Northrop N-9MA
« Reply #27 on: December 08, 2014, 11:05:11 AM »
Drawings from the photo gallery:
http://www.enginehistory.org/iv-1430_pics.shtml




“Conspiracy theory’s got to be simple.
Sense doesn’t come into it. People are
more scared of how complicated shit
actually is than they ever are about
whatever’s supposed to be behind the
conspiracy.”
-The Peripheral, William Gibson 2014

Offline LemonJello

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Re: Northrop N-9MA
« Reply #28 on: April 04, 2015, 11:01:41 PM »
Thread Necromancy! But I wanted to get back to this project.

Where we are now:





Now to start enlarging the engine areas to represent more horsepower.

Offline taiidantomcat

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Re: Northrop N-9MA
« Reply #29 on: April 05, 2015, 01:33:01 AM »
This is looking good  :)
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Offline arkon

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Re: Northrop N-9MA
« Reply #30 on: April 05, 2015, 11:40:53 AM »
Sweet!!
the paper gods demand sacrifice

Offline LemonJello

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Re: Northrop N-9MA
« Reply #31 on: April 06, 2015, 05:17:32 AM »
Update. I found a matched set of drop tank halves to use as the basis for my enlarged engine compartments.

The outboard gun locations have been set - the guns will be recessed back into the wing, unlike the pair inboard of the engines/intakes.



Working on the engines.  Outboard:



Inboard:



Head-on:


Offline finsrin

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Re: Northrop N-9MA
« Reply #32 on: April 06, 2015, 06:41:34 AM »
Exactly right kinda build to do with this kit :)
Hope to do similar some time.

Offline KiwiZac

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Re: Northrop N-9MA
« Reply #33 on: April 07, 2015, 06:59:48 AM »
I like it! Great idea, I'll follow with interest.
With warm regards from Whanganui, New Zealand

Offline LemonJello

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Re: Northrop N-9MA
« Reply #34 on: April 08, 2015, 09:25:11 AM »
Getting the drop tanks (courtesy of Fontaine Consulting Ltd) positioned:





The tank pylons will have to be reduced in height a little more.  I could lengthen the landing gear, but it's going to need enough work as it is just to get a solid connection that I don't want to deal with giving this one longer legs to stand on.  Unless one (or more) fails, then I'll have to try and scratch some from brass rod/tube.

Offline kerick

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Re: Northrop N-9MA
« Reply #35 on: April 08, 2015, 09:31:56 AM »
Very nice. I'll be watching this one. 8)

Offline Jeffry Fontaine

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Re: Northrop N-9MA
« Reply #36 on: April 08, 2015, 11:19:25 AM »
The drop tanks look like they were made for the N-9 :)

Did you shorten up the pylons or leave them as is?  The oblique view suggests a shorter in height but that may well be an optical illusion.
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Offline finsrin

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Re: Northrop N-9MA
« Reply #37 on: April 08, 2015, 11:51:43 AM »
The drop tanks look like they were made for the N-9 :)

Did you shorten up the pylons or leave them as is?  The oblique view suggests a shorter in height but that may well be an optical illusion.

Drop tanks sure do.  Great late 40's early 50's look :)
Question:  spose area-ruled drop tanks would present a 60's look ?

Offline LemonJello

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Re: Northrop N-9MA
« Reply #38 on: April 08, 2015, 07:57:20 PM »
Jeff, I had cut about half the pylon off in those photos, then I started working with the landing gear legs and realized the tanks would probably be close to, if not actually, dragging on the ground, so I trimmed the pylons down to almost nothing to get a higher clearance.

It may all be moot, I don't have the greatest confidence in the strength of the kit legs - I may just go ahead and make new sets that are a little taller and a lot stronger.

finsrin, I have a wide selection of drop tanks on hand thanks to the good Mr. Fontaine, and I tried some others, but these just seemed to be the right ones.  Now, when I make a kerosene converter out of the other N-9M I have, I'll go with some more modern tanks...

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Re: Northrop N-9MA
« Reply #39 on: April 09, 2015, 02:39:00 AM »
Looking good
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Offline elmayerle

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Re: Northrop N-9MA
« Reply #40 on: April 09, 2015, 10:16:44 AM »
Just a thought, you could move the drop tanks all the way up and make them faired-in slipper tanks like the Buccaneer uses.

It's looking beautiful as is, though.

Offline LemonJello

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Re: Northrop N-9MA
« Reply #41 on: April 09, 2015, 07:52:37 PM »
No photos today, but last night I added roughly 5mm to each leg to give the tanks a little more ground clearance and I think it'll work just fine with that adjustment made.  Also started rescribing the panel lines, just to clean up some spots that were looking a little soft.  Still need to add some wire details to the landing gear and finish closing up the engine nacelles and then its off to paint.

Photos to come as we near the next stage.

Offline KiwiZac

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Re: Northrop N-9MA
« Reply #42 on: April 10, 2015, 10:12:16 AM »
The drop-tanks really add to the look of this built. Fine work LJ!
With warm regards from Whanganui, New Zealand

Offline finsrin

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Re: Northrop N-9MA
« Reply #43 on: April 10, 2015, 12:10:27 PM »
finsrin, I have a wide selection of drop tanks on hand thanks to the good Mr. Fontaine, and I tried some others, but these just seemed to be the right ones.  Now, when I make a kerosene converter out of the other N-9M I have, I'll go with some more modern tanks...

Yes, I agree.
Jet or prop version could be built-finished for SEA service.  Or in 50s-60s NATO flightline diorama.  Desert Storm?

Offline LemonJello

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Re: Northrop N-9MA
« Reply #44 on: April 18, 2015, 10:26:57 PM »
Just a couple of photos today.  Hope to get primer on her this weekend.






Re: Northrop N-9MA
« Reply #45 on: April 20, 2015, 07:23:45 PM »
That is looking soooo sweet  :-*
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Offline KiwiZac

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Re: Northrop N-9MA
« Reply #46 on: April 22, 2015, 06:00:24 AM »
Wow, she's looking great. I must say that this photo



reeeeeeeeeeeally makes me want one. It just looks the business!  :-* :-*
With warm regards from Whanganui, New Zealand

Offline finsrin

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Re: Northrop N-9MA
« Reply #47 on: April 22, 2015, 10:27:08 AM »
Wow, she's looking great. I must say that this photo



reeeeeeeeeeeally makes me want one. It just looks the business!  :-* :-*


Exactly the words for me too:
reeeeeeeeeeeally makes me want one. It just looks the business!  :-* :-*

Offline LemonJello

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Re: Northrop N-9MA
« Reply #48 on: April 22, 2015, 07:53:59 PM »
Thanks everyone for the kind words. 

I've had to take a pause from getting this into the paint barn - had a sick pup to take to the vet for emergency surgery (blocked bowel from chewing up his blanket and eating some of it) He's home now and recovering.  Also, both girls are playing soccer now, so evenings are being taken up with that.  Hope to get back to it this weekend.

Offline taiidantomcat

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Re: Northrop N-9MA
« Reply #49 on: April 23, 2015, 02:59:33 AM »
That front view is a winner!  :)  :-*
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