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Old Jul 16, 2013, 08:35 PM
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Higgins R-10

Time for another build. This time it's a Higgins R-10. The R-10 is a little thicker in the fuse than the typical Rodent. It has an integral fin, saddle mounted wing with turtle-deck cap fairing and a horizontal stab with elevator that is mounted in a slot that is cut into the fin.

I have a set of wing panels that I sheeted with 1/32" birch ply from Aircraftspruce.com. The leading edge is capped with oak and sanded nice and sharp.

So what's left?

-Finish Wing
-Make Tail
-Install Gear

That's the abbreviated list.

I'll add pics as I go. Feel free to post pics of your Higgins planes.

Adam
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Old Jul 16, 2013, 08:43 PM
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Adam,

Looking forward to your report.
Just received my Mole from Sir Higgins just yesterday.

Lp
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Old Jul 16, 2013, 10:58 PM
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I liked the fixed stab/elevator I put on my Rodent. I used a Brodak horn setup that's meant for control-liners.

On my recent F-20 I only glassed the tips and in about 3" or so. In my experience that's where most problems are. The rest of the wing is painted (poorly) ply.

I sold my R-10 fuse, so I need to talk to John about getting another. That's a seriously beefy fuse.

Oh, and Harry S. got me thinking about building it as a 1-piece plane.

Oh-I forgot. I did one of those Russ Thompson style stabs where you sandwich 1/32" ply between two pieces of 1/8" balsa. The ply's grain is oriented chord-wise, and before you glue it all together you cut out openings for ez-hinges. I glue in the ez hinges with E-6000 once the tail is finished.
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Last edited by slopemeno; Jul 16, 2013 at 11:06 PM.
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Old Jul 17, 2013, 05:44 PM
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A few pic of my white R10 and Seth Penery's black R10 @ Sunset Beach .
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Old Jul 17, 2013, 06:49 PM
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John,
Nice pics. How did you get the pair to land so close to each other...lots of practice?

Tony,
thanks for the tips. I like the sandwich tail concept. Sounds strong. Do you have a link for the control horn deal?

LP,
glad you got a MOLE. You should post some pics of it on the "MOLE" thread. If you hurry you may be the first to fly one.

Here are some pics of the airframe and misc. parts. Nice and simple.
- Fuse w/angled slip-on nose cone
- Sheeted wings with carbon strips top and bottom and at the leading edge
- Preshaped balsa for the tail
- Wing hold down block and hardwood wing tips

Adam
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Old Jul 17, 2013, 09:42 PM
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Well I don't like to brag or anything , so let's just say I hand placed them .....
Seth probably could have made such a close grouped landing , as he has superb flying skills,
way beyond a level my fingers and eye sight could articulate .
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Old Jul 17, 2013, 09:49 PM
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Eldorado CA
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Hey I think I seen those 2 R10s flying some where. The black one looks really familiar for some reason . Adam, good luck with the build! I'll be keeping an eye on this thread!

My 2 cents would be to go with the wing layup like Tony mentioned. Keep them light with a nice little glass over the leading edge joint. Really makes the R10 fun in lighter conditions.
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Old Jul 18, 2013, 12:06 AM
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My first R10 was 130oz and it was rock solid. I started to build a secound, sheeted wings with 1/32nd ply and two layers of 6.75carbon with 3/4oz vail cloth, the wing panels are 17oz each without my 5200 marine adhesive hinge, or servos, I stopped the project because I felt I was getting out of hand, I was shooting for 170oz which is crazy. Anyway keep building Adam
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Old Jul 18, 2013, 03:15 PM
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The Bluffman has a weight he considers crazy...???



Rubio
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Old Jul 19, 2013, 11:24 PM
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I did say maybe
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Old Jul 20, 2013, 07:29 PM
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A little bit of progress today. I sanded the horizontal stab and elevator. I stuck with the supplied 1/8" balsa stock. Fiberglass is next.
Adam
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Old Jul 20, 2013, 10:59 PM
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Keep going Adam.
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Old Jul 25, 2013, 03:24 PM
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Adam- this is the pic I was looking for. As you can see, the "core" of the elevator will have the recesses left open for EZ hinges, plus if you do the garin the "wrong" way- i.e.- chordwise. you get some incredible ding resistance on the LE and TE of the tail.
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Old Jul 26, 2013, 08:07 PM
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I see what you mean by LE and TE ding resistance. I'll have to try this technique on a future build.

Adam
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Old Jul 26, 2013, 11:01 PM
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It's not light at all, but my R-2 came out at only about 60 ounces or so with one of these tails.
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