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Re: 1/3 scale Japanese vintage glider Mita type 3

Posted: 16 Nov 2019, 12:50
by norm
Martin, thank you for your comment. You can see more picture in my blog. Although it is written in Japanese, you may possible to understand by viewing pictures. Please try!

http://normsan.blog.fc2.com/archives.html

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Re: 1/3 scale Japanese vintage glider Mita type 3

Posted: 16 Nov 2019, 12:55
by norm
Let me show you my 1/3 scale Mita's beautiful flight over the rice fields. This view is taken from a drone.

[youtube]https://www.youtube.com/watch?v=-qNezx_ ... e=youtu.be[/youtube]

I belive the scenery is quite different from those of Europe. Did you enjyoy it?

Re: 1/3 scale Japanese vintage glider Mita type 3

Posted: 16 Nov 2019, 13:32
by Adam C
I've used a similar approach with Ww1 scale power models that used wooden dowel to emulate steel tubing. The idea is interesting but suffers from easily cracked joints even with pining.

Thin walled steel tubing is practical and can be welded.

Re: 1/3 scale Japanese vintage glider Mita type 3

Posted: 17 Nov 2019, 07:54
by norm
Wing Build

The wing is composed of four sections, 2 center sections and 2 outboad sections. The full scale Mita has a single center section but I have broken it in two sections because of ease for transportation. It has a single spar at 35%C and an auxiliary spar in front of the airlon. The spar was built with a square carbon tube frange and a plywood web.
Each section was built on an assembly jig. Total weight of the wing is about 4 Kg after covering and painting.

Re: 1/3 scale Japanese vintage glider Mita type 3

Posted: 17 Nov 2019, 09:52
by RobbieB
Super vids (and model) Norm - always nice to see something a bit different.

Quite a 'tight' flying field you have there but I suspect Rog would still be a bit envious :lol:

It will be interesting to see how the epoxied joints stand the test of time re Adam C's point - do please keep us informed.

Re: 1/3 scale Japanese vintage glider Mita type 3

Posted: 17 Nov 2019, 13:41
by norm
Adam C and RobbieB, Thanks for your comments. I will check the epoxied joints before every flight and inform you if anything wrong would be found.

Re: 1/3 scale Japanese vintage glider Mita type 3

Posted: 17 Nov 2019, 19:40
by Jolly Roger
What a beautifully engineered model and a really atmospheric video. I love the long shadows and rich sunlight of early morning / late evening.

Yes that landing area is a little cosy! But the model was flown very skillfully.

I experimented with gluing carbon tubes together for my 1/3 scale cub undercarriage and found the joints far too fragile for the shock of landing loads, so I created the strength from the carbon tows and epoxy pulled through the tubes. However I think in a large interconnected frame like your fuselage, the parts support each other so I think it may be strong enough.

One last thing - I hope you took great care to avoid breathing in the carbon dust as it is highly toxic. :)

Thanks for posting.
Roger

Re: 1/3 scale Japanese vintage glider Mita type 3

Posted: 17 Nov 2019, 21:59
by Jolly Roger
Some further info on the Mita...

Re: 1/3 scale Japanese vintage glider Mita type 3

Posted: 18 Nov 2019, 14:21
by norm
Rojer, Thank you for your comment.
Yes our field is small because Japn is composed from small mountainious islands. There is little open space.
How I want to fly my models in Europe!

Norm

Re: 1/3 scale Japanese vintage glider Mita type 3

Posted: 19 Nov 2019, 13:24
by norm
Landing Gear
The Mita has a landing gear which has a single wheel supported by two rubber shock absorbers. I simulated it in my model.
Attached, you can find the drawing, parts cutted from carbon sheet/pipe and the assembled gear.