Semi scale Mig-25 Foxbat, 70 mm - Page 8 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 02-20-2016, 11:55 PM   #71
Dutkoski
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Re: Semi scale Mig-25 Foxbat, 70 mm


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Did a lot of little things, framed in the rear hatch and got it fitted nicely, then shaped the fuselage bottom sides. Started covering the airframe, the bottom of the wings first and the upper main hatch. Also sealed the balsa flying stabs. Not going to cover them with fiberglass, just a few coats of urethane. And trimmed and fitted the two tail cones.
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Old 02-22-2016, 06:55 AM   #72
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Re: Semi scale Mig-25 Foxbat, 70 mm

Nice work so far, John!
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Old 02-22-2016, 12:21 PM   #73
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Re: Semi scale Mig-25 Foxbat, 70 mm

Thanks Max, hard to believe it's all made from 1/2" thick foam and less that a full sheet to boot.

Yesterday, finished applying the fiberglass cloth with the water based urethane clear coat. This morning, lightly sanded everything with 320 grit sand paper. This smoothed out the stipples caused by dust and such, also you can sand through any bubbles that may have occurred, and some did.

Applied the second coat on the underside, will wait for this to dry before painting the top surfaces.

I sure hope this thing flies 😏, I've been doing some thinking and I guess the grey scheme will have to do for this copy of the Mig. I want to do another, but as a twin 90 mm. Most likely twice the size and it will be a two piece fuse, plug in wings and vertical fins. Easy for transport and fixing. I have the fans, motors, ESC's and batteries. Just need a set of those inexpensive HK retracts. Imagine, building the airframe portion for well under $100.00, ya gotta like foam.
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Old 03-13-2016, 08:16 AM   #74
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Re: Semi scale Mig-25 Foxbat, 70 mm

John
Any further progress on this project. Have you flown it yet?

Marty
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Old 04-14-2016, 09:35 AM   #75
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Re: Semi scale Mig-25 Foxbat, 70 mm

I just got back from the Deep South, Canada welcomed me when I crossed the border Sunday with really nice weather, high winds and blowing snow ......... Great to be back. Since my last post and now, I have been very busy so no further progress on the Mig has been done. It's still in the trailer but after I get my workshop back in shape, I will continue the build. One thing I want to improve is the twin vertical fins. The balsa ones just don't do it for me, so now that I have all my various styles of hot wire bows at hand, I will cut a pair of foam vertical fins that also will have a NACA airfoil.
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Old 04-14-2016, 04:46 PM   #76
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Re: Semi scale Mig-25 Foxbat, 70 mm

Welcome back John!- this weekend should be more to your liking.
Now- get to work, we want to see progress.
Tom
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Old 04-15-2016, 11:25 AM   #77
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Re: Semi scale Mig-25 Foxbat, 70 mm

Hey Tom, well, this weekend is the big swap meet in Newmarket, so getting stuff ready for that event, lots of EDF units and motors and Dura Grit, and stuff, hope to sell all and lessen my clutter.
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Old 04-15-2016, 04:15 PM   #78
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Re: Semi scale Mig-25 Foxbat, 70 mm

Hope it goes well for you John- too far for me unfortunately.
Tom
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Old 04-18-2016, 11:01 AM   #79
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Re: Semi scale Mig-25 Foxbat, 70 mm

Wanted slightly bigger main wheels and found I had a set of 2 1/2" Dave Brown Lite foam wheels hanging on the wall. However, they are slightly thicker. The wheel collet was too thick, stuck out too far and would not go through the wheel well opening.

I noticed a nail I had laying on the bench, a common straight shank, and saw the head of the nail would be perfect if I could locate a thicker shank. So at Home Depot, located 3 1/4" common straight shank nails that were perfect in size, fit the axle hole just right. So for under $5.00, I now have several life time supply of axles.

I just cleaned up the head a bit and cut the nail to size. The head of the nail sits flush with the wheel hub and actually looks pretty good.
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Old 04-18-2016, 11:29 AM   #80
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Re: Semi scale Mig-25 Foxbat, 70 mm

Nicely done!

Note those foamy's are ver soft and will wear fast on any paved runway especially if you got any kind of crosswinds
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