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Old Feb 11, 2007, 09:30 PM
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You've covered a lot of ground in just over a week. Impressive!
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Old Apr 11, 2007, 08:44 PM
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Finished Pic's


finally got time to finish the Mig-15, here are some current pic's, AUW ~ 2 lbs 6 oz.

AD
Old Apr 12, 2007, 12:41 AM
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Maiden soon, or is it snowing there too?
Old Apr 12, 2007, 08:13 PM
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not snowing today, just cold! I won't maiden for a little while, until the weather is good.

AD
Old Apr 13, 2007, 03:50 PM
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Quote:
Originally Posted by AeroDude
not snowing today, just cold! I won't maiden for a little while, until the weather is good.
I first thought GAANDAHL was kidding, until I checked yahoo ...

Poor guys, this what is expected for this weekend in 'cold germany'
http://weather.yahoo.com/forecast/GMXX0250.html.
Looks like it's warmer than in southern California.

I like global warming

We have the yearly fly-off meeting this weekend on our club field.
Hope you soon see similar flight conditions soon . . .

Peter
Last edited by vampire67; Apr 13, 2007 at 04:01 PM.
Old Apr 13, 2007, 04:32 PM
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Hey AD

Man, you did a great job on the Mig!
I checked out RT Models site and am very tempted to get the Mig for my first EDF Kit. Just wondering from looking at your build where to put the battery mounting plate? What did you do, and with your power set up what battery did you go with?

Regards,
Nut
Old Apr 13, 2007, 09:18 PM
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nut,

check out the first pic in second row, show the bottom bay for ESC, Rx and battery, the Kokam 3S 2000 mah 15C Lipo fits in the forward bay.

I think I could have done a little better, but I'm happy with it

thanks,

AD
Old Aug 08, 2007, 01:15 PM
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Hey, I just purchased the Mig 15 and it will be my first EDF. I was just wondering how you make the air intakes and exhaust. Is it just paper rolled up and fitted to the formers? Or is it something special, or can you even buy air ducts? Sorry for the simple questions.
I like your Mig by the way.
Old Aug 08, 2007, 10:31 PM
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https://www.rcgroups.com/forums/showthread.php?t=413622
Eric,
Go to the link above and read the discussion by Steve St. Martin on making ducts for the RT Mig. He does great-looking work.
GA
Old Aug 08, 2007, 11:55 PM
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Thank you GAANDAHL! Thats all I needed. I purchased the larger one, but the concept is the same.
Old Aug 12, 2007, 09:26 AM
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Eric,

sorry, not on here much lately, too busy, anyhow the way I made the ducts is to use card stock, fiberglassed both sides with 3/4 oz glass and Polycrylic, used my heat gur to dry it, painted it black, then use a small piece of PVC pipe or a pastry roller to initially shape the duct, once the duct was shaped to fit into the fuse I marked it and used black electrical tape wrapped around the duct in several places to hold its shape, I then epoxied it into the fuse. You will need one section up front and two sections aft of the motor.

A fully constructed fiber glass duct is nice but too heavy, the one GAANDAHL refers to weights a pound more than mine.

I have yet to fly mine, not sure what I am waiting for, I constructed a trolly for takeoffs which has been tested and works great, but not the soccer goals are back up at the park which will make landing difficult, we have had alot of windy days this summer, I will get it in the air soon.

AD
Old Aug 13, 2007, 12:03 PM
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For inlet ducting I use Krispy Kreme donut box, the dozen size large box, usually with the shiny side on the inside. I've started using it wet which makes it easier to bend to complex shapes for rectangular inlets, but a making a simple cylinder with dry paper would probably work fine. It's attached to the lite ply bulkheads in my scratcbuilt F-4 and modded EJF 90mm F-18, it holds up fine to the sucting of a Midifan and 1200 watts. I do have some carbon tow wrapped around the F-18 ducting I think, between bulkheads, at least in it's first version, but on the rebuild I glued on 1/8 x 1/4" balsa stringers to the ducting and that's kept them from collapsing, much easier than working with carbon tow (tangled mess). The material is stiff enough I could probably get by without the stringers but I put a couple on anyway to play it safe.
Old Aug 13, 2007, 01:20 PM
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Cool idea! And thanks for the info guys!
Old Oct 14, 2007, 11:37 AM
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Finished!


I recently got new LiPo's for the Mig-15 from Aero-Nuts, 2 3S-1700 mah for a 2S3P 3400 mah total pack. They lay nicely in the forwad bay in the bottom of the aircraft. I also added the fences on top of the wings. With the new bat's I have a little nose down which should be just fine. Can't find any info on aileron/elevator throw's so I have yet to fly her. I have done one test launch off the trollie, it come off fine and I let her sit back down on the runway and skid to a stop. My AUW is ~ 40 oz.

here's the finished pic's

AD
Last edited by AeroDude; Oct 14, 2007 at 11:54 AM.
Old Oct 14, 2007, 07:27 PM
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Nice work! I look forward to hearing about your control throws and final CG.
GA


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