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Author Topic: Old School Modelcraft Miss Tiny  (Read 611 times)
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Mark Braunlich
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« on: June 06, 2020, 05:10:37 PM »

I'm building the 1938 Modelcraft (Los Angeles) Miss Tiny as authentically old school as possible using only the plan (no kit).

Engine, post war Ohlsson .23 side port.

Ignition, period correct coil, condenser, Austin pneumatic timer, and lead acid pen cell batteries.

Some of the modifications for practical sport flying per Alex Imrie's article in the Aeromodeller have been incorporated.



 
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Mark
Mark Braunlich
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« Reply #1 on: June 06, 2020, 05:38:51 PM »

Additional photos
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Mark
Mark Braunlich
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« Reply #2 on: June 10, 2020, 04:26:50 PM »

More photos.  Covering is Esaki silk over Silkspan.
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Mark
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« Reply #3 on: June 10, 2020, 06:45:31 PM »

Super cool Mark. Great that you are keeping it all vintage. Keep the pictures coming.
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Mark Braunlich
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« Reply #4 on: June 13, 2020, 04:07:26 PM »

Fuselage is painted.  Going to wait a bit to harden the dope and then an off-white trim stripe goes on.

Genuine vintage Voit Rubber Products pneumatic wheels/tires were a fortunate eBay find.  The valves need some work to get them to hold air for a suitable period of time.  They are the wheels shown on the 1938 Modelcraft plan.

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Mark
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« Reply #5 on: June 13, 2020, 04:20:20 PM »

What a gorgeous colour.  I do so hope you can get the tyres to hold air.
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Mark Braunlich
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« Reply #6 on: June 15, 2020, 12:03:15 PM »

Modified Ohlsson gas/petrol tank to cure excessive leaking through the stock check valve.  No original parts were modified or damaged.  The mounting screw in the fibre cover plate is offset .045" from center.  The spraybar is also home-made to replace original broken at the thread.
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« Reply #7 on: June 15, 2020, 08:16:04 PM »

Interesting project Mark. A trip back in time.

John
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Mark Braunlich
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« Reply #8 on: June 27, 2020, 12:45:18 PM »

Photos from earlier in the build, yes, out of sequence.
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Mark Braunlich
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« Reply #9 on: June 27, 2020, 12:49:21 PM »

Mock up with Townend Ring made by Berkeley for their C/L Curtiss A-12 Shrike kit of the 1950s.
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« Reply #10 on: June 27, 2020, 01:42:59 PM »

It's a great looking model Mark. Did Alex use an Elf in his, I seem to remember?
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Mark Braunlich
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« Reply #11 on: June 27, 2020, 11:06:47 PM »

No Bill, Alex used a pre-war Ohlsson .23 side-port.
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Mark Braunlich
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« Reply #12 on: July 22, 2020, 09:51:13 AM »

Painting and decals completed.  The Ohlsson decals on the fuselage flanks are approximately 75 years old but went on with no problem.
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« Reply #13 on: July 22, 2020, 04:33:54 PM »

I've got 2 sets of plans...the zipper may be built, but I want a buzzard bombshell too.......ahhhhhhh!!!!!!!!!
im gonna use electric, as my O&R is pristine, and I just cant bear to use it.....so I salute your work! Grin

please post flight pictures someday!
marc
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Mark Braunlich
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« Reply #14 on: July 23, 2020, 09:54:45 AM »

My 1938 old-school Miss Tiny is finished.  Trexler wheels on it in these photos.  I will try to modify the correct Voit tires/wheels and mount them as time allows.  CG came in pretty close to plan location with the batteries moved to the aft fuselage.  Putting the batteries in the plan location would make the airplane very nose heavy.
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Mark
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« Reply #15 on: July 23, 2020, 01:24:33 PM »

That's a beauty Mark!

Mike
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« Reply #16 on: July 23, 2020, 01:39:41 PM »

Quote from: MKelly
That's a beauty Mark!
+1
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Squirrelnet
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« Reply #17 on: July 23, 2020, 04:05:33 PM »

That is one beautiful vintage model Mark. I love the Trexlars and a very nice O&R 23 up front. There's nothing to beat the sound of an old sparkie but I've not flown one for years, not since we lost Middle Wallop as a flying site here in the Uk.  It's great you can you still fly these models they are my archetypal idea of a vintage model aircraft
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« Reply #18 on: July 25, 2020, 09:10:17 PM »

Beautiful effort Mark. That middle photo with the Ohlsson 23 prominent looks like it could have come straight out of a 30's Popular Mechanix! Very charismatic.

John
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