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Author Topic: Mig15 EDF  (Read 984 times)
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« on: May 12, 2013, 11:02:10 AM »

Hi All,


Thought I'd share some pics of my first build in a loooong time build. Recently got back into the hobby.  Smiley

While I was browsing the local Hobby Store, I noticed this little 35mm EDF motor. Just had to do something with it.

Took a old Guillows Mig15 plan which I downloaded from the plan gallery and scaled it up to 133% Its my first EDF, so, take a look at the pics and if you have any comments, please share.

Done the fuzz with cardboard inner tube which worked well with the motor. The fuzz is really strong as shown, but a bit heavy. Lets see how it goes....  Not sure how heavy it should turn out. Any thoughts from the gurus out there?

Oh well. If it does not fly well, at least its gonna look great. Have a real soft spot for the MiG15. Cant decide if it should be silver or red!  Grin


Thanks for all the inspiration guys. Love this forum!   
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« Reply #1 on: May 12, 2013, 11:03:30 AM »

Some more pics

 Grin
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« Reply #2 on: May 12, 2013, 11:04:44 AM »

And some more....
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« Reply #3 on: May 12, 2013, 06:45:55 PM »

Model Airplane News had a nice ducted fan MiG 15 back in the late 50's early 60's.  A few months later that had a Cougar.  I was finally able to get a copy of the Cougar plan but never of the Mig 15.  I just wondered if anyone might have a copy that they would sell or send to Ratz to upload to the plans section.
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« Reply #4 on: May 13, 2013, 07:32:36 AM »

I guess it may be a bit too late, but a rolled bond-paper efflux (thrust tube - the "blow" end) would have been a better choice, and a lot lighter - SLIGHTLY tapered to the rear (~10-15%).  These puppies need to be as light as possible - epecially in the back end.  The inlet using a higer density bond paper (100gm) might be beneficial and have enough strength to withstand the "suck".

That particular fan looks like the Chinese one (aren't they all?).  Not very much thrust with the blade and motor supplied, but it DOES work.

Weight is THE enemy for EDF!
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« Reply #5 on: May 13, 2013, 08:25:56 AM »

Awesome. Thanks for the input, Pit!

Never to late. Let me build removable wings and I will build another fuzz!  Grin What sort of weight should I be aiming at?

Will try the rolled up bond and see how it works.


Yes, Chinese fan. Like my fun cheap.  Cheesy

Building the wings tonight and will post more photos.
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« Reply #6 on: May 13, 2013, 10:36:28 AM »

Looks nice---any chance of the Cougar plan being uploaded to the Plans Gallery?
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« Reply #7 on: May 13, 2013, 10:44:39 AM »

Would be great to get a few more of these in the gallery. 

I have a copy of a twin Ducted mini called a Javelin. Was designed by Chris Golds in the UK and published in Radio Modeller, May 1992. Designed for twin Cox 020s! Would make a great convert to EDF.

How do I go about uploading plans?  Huh

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« Reply #8 on: May 13, 2013, 12:57:47 PM »

Lots of good info HERE.  One of the experimenters (copbat73) is also a member here on HPA and has cross-posted most of his stuff.

For plans uploading, you'll have to register on the Plan Gallery (instructions at the top of the Forum main page).  Takes a day or two to get it set up and for you to get accustomed to the idiosyncrasies.  OR, you can sent the plans files directly to Ratz (preferably already scanned as a .pdf file - please NOT a pdf.js file) as he checks them for compatibility anyway.

Pete
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« Reply #9 on: May 19, 2013, 09:02:14 AM »

Been a busy week, so have only been able to finish the wings......  Tongue

Will post as it progresses.  Smiley
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