Comet Ercoupe Build

MZ250Ben

Well-known member
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It's a snow day here in northeast Ohio, and I am NOT going to work we got easily 18" since last night. My drive home was just aiming the car at the space between mailboxes. So what better excuse to start another old balsa kit, I have at least 6 more in the queue. I may make this one bank'n yank since rudder action will likely be weighty and ugly. Aside from that. she seems pretty straightforward. I'm pretty sure this aircraft made a lengthy appearance in the movie "San Fransisco International," a straight-to-tv cheese fest that I only know of because it was feature on Mystery Science Theater 3000. It's red in the movie, so I'm going to finish it that way, thus becoming the only person ever to emulate anything from that film.
 
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Piotrsko

Legendary member
Hmmm ercoupe comet kit. You're either a way better builder than I can ever dream about, or it will be lumpy......
 

MZ250Ben

Well-known member
Fuse is started, but I'm waiting on radio gear before I stringer it up. It will be substantially heavier than the aeronca, I think. More formers and bigger ones at that, but also a longer chord, so more area. Let's hope it's a wash. Time to cut some ribs...
 

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MZ250Ben

Well-known member
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She's coming along, just a few hang-ups, like my misplacing of wingtip piece #5 (not ruling out feline intervention) so I had to fudge out a new one. I use the Scrabble letter as a mini square for the ribs. Look how on the tissue you can see the chemical shadows of the wheels and the rubber string. I find this foamboard to be a far superior pin-holding platform than corrugated cardboard like I used to use. I use medium and thin CA with "Zip Kicker" accelerator. It does not damage the plans or finished tissue, but it does mess up the celluloid and the scent annoys the wife.

If you look closely in the last pic you can see the fiberglass rod that I use to double the upper spar to the 4th rib. This is actually called "tracker rod" and it is from a mechanical pipe organ, which is what I built for the first 20 years of my working life. One job's worth of tracker cutoff scraps will supply an aeromodeler with pushrod and spar stock for life. You can also burn the end briefly and it will become a mini brush.

On another subject, I discovered that these little crossover rx brick esc/servo things are pre-setup to run opposing ailerons. You can change it with the app of course, but by default the two ports will run two servos inverse of each other. Maybe this was common knowledge, but I thought the 4th port was data and the 3rd was the only extra channel. This is a propitious revelation, as I have a new board with one bad servo, so I will use the good one as elevator and run two loose servos as the ailerons of the two ports.

That's all for now, I have the day off and snowpocalypse is inbound, so I should get some serious work done this weekend. I hope to have it done for the next Kent indoor fly on the 28th of February, I'm optimistic.
 
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