60" C-5 Galaxy fully molded (in work) - RC Groups
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Sep 13, 2010, 10:11 AM
Retired C-5 Flight Engineer

60" C-5 Galaxy fully molded (in work)

I have decided to move this over here to the scratch built forum, as it is scratch built! I didn't really have any thread before just posted some odds n in's pix.

Anyways, this is a smaller version of my in works turbine powered one. It will be a fully molded fuselage/wings when completed with carbon reinforcement in critical areas. Hoping for less than 8 lbs ready to fly and will be setup for 4 x 60mm fans for the scale size nacelles. Operational retracts and flaps and lights will be incorporated...

The airplane was derived from Lockheed plans/maintenance books that i had..

Here are some pics of the in-work plug, still needs some work on the finish but it will be smooth as a baby's butt when done.

The build will probably take longer than most as i fly for a living and am gone very frequently, so stick with me as i do this......This will be the official forum for this build
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Sep 13, 2010, 10:38 AM
Bajora's Avatar
I'll be watching this progress! And when you are ready to fly it, maybe I can shoot some photos and video for you?
Latest blog entry: 2017 Reno Air Races
Sep 13, 2010, 10:46 AM
Retired C-5 Flight Engineer
sounds good Bajora
Sep 13, 2010, 12:03 PM
Have you seen my nut?
Lithonion's Avatar
That is going to be one sweet looking plane. It already looks the part. Oh, as for the build being slow cause your a pilot. Hey no worries, I bet that plane will be done before you have paint on the walls and thats all that matters.

Sep 13, 2010, 12:09 PM
Retired C-5 Flight Engineer
HAHA, I have just never painted those walls because i didnt want to ;-)))
Sep 13, 2010, 09:32 PM
EDF rules... :)
AirX's Avatar
Good to see the build thread. Good luck with your build.

Eric B.
Sep 14, 2010, 05:27 AM
Registered User
Si Goodchild's Avatar
Good effort matey! Just a thought: if you're reckoning on 8lbs all-up weight you might want to hop up your EDFs from 60mm as I fear you may suffer a lack of performance. Can you go to 4x 64mm without spoiling the look of your aircraft? I'm currently getting over 900g installed from a really basic cheap-as-you-like 5-blade fan in my Art Tech Typhoon, so without the lengthy intake, bifurcated exhaust etc you should get more. I simply use a nice chunky 4000kv motor sourced from ebay and delivered for 10 GBP (about $16 USD). These suckers pull up to 50A static on 4s and sound great. I use a bargain ESC too (about the same price as the motor) rated at 45A (60A burst) and it runs flight after flight after flight without breaks and never misses a beat or gets hot.

I'm not trying to sell you this stuff, but if you want improved performance on a budget I can point you in the right direction, please feel free to PM me. Might be useful when hauling that big old jet of the deck!

Sep 14, 2010, 03:39 PM
Retired C-5 Flight Engineer
Thanks fo the idea.. But the galaxy should do just fine on 4 60mm, as it is not meant to be a powerhouse :-))
Sep 15, 2010, 06:11 AM
I failed linkage geometry
salisbug's Avatar
Cool project
Sep 15, 2010, 10:18 AM
Retired and Lovin' it!
TPfingston's Avatar
Great looking project. Terrific job so far on the fuse. And not to throw cold water on a hot project, but I really worry about a flying weight of 8 lbs on a 60 inch wing span. You didn't give a projected wing area but I'm guessing in the neighborhood of 700 sq. in. The plane will have to be pretty fast flying with that wing loading (estimated ~24 oz/sq ft.). I guess what I saying is that it won't have a scale flying appearance. Anyway, best wishes.
Sep 15, 2010, 10:49 AM
Retired C-5 Flight Engineer
Hey Tony.....thanks, but i just want to say that-8 lbs is a max guess on the weight...As there will be no formers other than gear formers, and the layup will be glass and carbon in all the right place, i am thinking it will be way lighter!! We will see!
Sep 28, 2010, 07:41 PM
Retired C-5 Flight Engineer


OK, been a long time because i have been having battles trying to find my (normally easy to procure) pink foam. Anyways, heres the top of the wing done (minus a little finshing sanding). Time to blend the bottom!! Almost ready top mold!! BTW- I desided on a clark y airfoil to make it really nice with slow flight!!
Sep 28, 2010, 08:58 PM
Registered User
I want one!!!!!!!!!!!!!!!!!

No but seriously... lookin good there buddy. Did i read right that you are moving? where to?
Sep 28, 2010, 09:09 PM
Retired C-5 Flight Engineer
Just moving to a new house here (we live on base, and they just built REALLY nice 4 bedroom homes!)..

Thanks bud@!
Sep 29, 2010, 01:54 AM
Official Boat Bum
Eddie P's Avatar
Outstanding work Nick. Just for reference... my BAe-146 flies nice on 800 watts (watts IN, it's probably only about 60 percent efficient on brushed motors) and it weighs about 8 pounds. So depending on how much air you will move, and it could be a lot less, you should be very happy on anything around that watt figure even if you are moving less air (small fans) given my sizable disadvantage in motor efficiency.

PS - I used to always be able to buy pink and blue high density foam at Home Depot but I see they no longer sell the stuff. Are you mail ordering it these days? I'm penciling a new scratch build and I'm almost thinking about using depron formers and balsa sheet with glass over the top as it's so hard to find carving foam these days.

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