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Old Jan 09, 2016, 05:52 PM
JakesNell is offline
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South Africa, WC, Langebaanweg
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The Black Beauty

Mugi Evo that I just finished building, going to maiden it tomorrow, does the prop look correct, its a 6x4E? and the wing spacing? should the CG be EXACT or can it be a bit nose heavy?Final weight is 590g
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Old Jan 10, 2016, 11:09 AM
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Prop backwards. Put it on the motor so that any lettering on it faces forward. The rest looks pretty good though.
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Old Jan 10, 2016, 02:31 PM
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Correx IS Always The Answer!
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Thanks man i did that and had my first flight ever today with a mugi, flew quite successful on the third try at launching (other two where nose dives ) Butt i noticed it kept flying with its nose almost 15 degrees upwards and i had to lean on the up elevator to keep it going straight. What might that be?
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Old Jan 13, 2016, 07:10 AM
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First off, flying wing so you must have a little up in it to fly level. But 15 degrees means you arer nose heavy. Move the cg back a bit at a time. What I always noticed was with a nose heavy plane you pull back on the stick, the tail rotates down and then the plane starts arcing up a bit whereas when the CG is close to correct you move the stick, the plane rotates (not just drops its tail) and the flight path changes immediately.
Too far back and you will have your hands full. Do this.
Find a point in your house where you can hang a loop of cord. You want to wrap a the loop arond a wing, up over the suspension point and back down to the wing. It's alittle hard on a wing as they like to tip forward. I usually loop around the nose to the opposite side wing, anythign to get it to hang level. Then put a nut on a piece of kite thread or sewing thread, something lite. I use just a 1/4 x 20 standard nut out of the junk drawer, just need something with a little weight to make a plumb bob, hang that from the same point you hang the plane from. You've made two plumb bobs, they both hang from one point and the center of mass of each is in between that point and the center of mass of the earth SO the plumb bob points to the CG of the plane.
Add weight to the tail to move that slightly back . I like between 15-19 percent of the MAC on my wings. I've had a wing at 21% and it weren't fun. You can calculate where this falls on the plane by going to the Palos RC CG calculator page and entering your dimensions. I think the Mugi plans have the CG range on them, follow those if they do. I bet your closer to 11% that's where it was when I last flew mine nose heavy.
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Old Jan 13, 2016, 10:15 AM
JakesNell is offline
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Correx IS Always The Answer!
South Africa, WC, Langebaanweg
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Thanks man that really helped alot! Here's a vid of me flying, ill post more soon
Beginner Mugi Evo Flight (0 min 58 sec)
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Old Jan 18, 2016, 11:20 PM
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Lands rather abruptly but other then that looks good. Hard to tell the difference in top and bottom with an all black plane.
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Old Jan 21, 2016, 12:35 PM
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Correx IS Always The Answer!
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Lol yeah the landing was the hardest part but it was my first real full mugi flight .Yeah it is pretty hard, going to make the bottom all yellow and see how that goes :P
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Old Jan 25, 2016, 06:59 AM
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My first Mugi wasn't. It was called something else and it was made out of DTFB that you peeled the paper off of. Basically the same construction though and ended up with a Mugi that weighed nothing. I coupled a bunch of rubber bands together to make a 6 foot bungi and wrapped that around a pitchfork that I stuck in the ground. Shot it out of my backyard, up over my neighbors house brought it back around over another neighbors yard and back to my hand to do it again and again. The next Mugi I built I took to lake Wilson for MWSC days. Got out of the car and the wind was blowing gently and decided I'd give this a test glide. It was heavy but balanced right. I gave it a casual toss and you'd think it was the foam one it floated almost 100 yards up to the cliff edge. I walked up fully prepared to give it a good flying and the wind died for the next 4 days. Never got back with it darn it. I don't have a worthy slope for one though I suppose I could power it like yours. Just another project to do.
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