Old_Pilot's blog View Details
Posted by Old_Pilot | Yesterday @ 11:16 AM | 5,434 Views
I was one for two yesterday...the Kombat flew great...the Plank, not so much...wing is in three pieces..whatever I did wrong, it was serious..she was unflyable..here's the video of the Kombat III EDF

Kombat III Music (3 min 32 sec)

Posted by Old_Pilot | Oct 22, 2021 @ 09:33 AM | 9,910 Views
I got real tired of paying $1.50 for a pair of duBro control horns......so I made 36 of them for less than $1.00
Posted by Old_Pilot | Oct 20, 2021 @ 02:34 PM | 12,887 Views
Hope to maiden her this weekend
Posted by Old_Pilot | Oct 19, 2021 @ 05:39 PM | 14,004 Views
Spent two days covering the wing.....Almost 1.5 rolls of yellow...orientation strips on the bottom.

The white splotches are reflected light
Posted by Old_Pilot | Oct 18, 2021 @ 10:14 AM | 17,045 Views
Getting ready to start covering...but first I had to make the wing-to-fuse fairing.....
stacked up (8) individually cut (CNC) profiles, glued them together, and then to the top of the wing.....
not bad for Mr. Thumbs
Posted by Old_Pilot | Oct 15, 2021 @ 01:36 PM | 24,875 Views
Got the ailerons and elevator mounted and hinged....And she balances right where she is supposed to......now to figure out color

Just ran the wing loading calc's.....48 oz all up over 6 sq ft of wing....8.0 oz/sq-ft......that's pretty light wing loading...very pleased......anything below 10 would have been acceptable
Posted by Old_Pilot | Oct 13, 2021 @ 07:22 AM | 27,115 Views
Got the wing assembled and the servos mounted..will build the control surfaces today....sewn hinges

And I got most of the fuse done..had to surface mount the rudder servo....not enough room inside the fuselage.....oh well....The cowling is the bottom of a Hug Fruit Juice Barrel......the only glider on the planet with a radial engine.LMAO
Posted by Old_Pilot | Oct 08, 2021 @ 06:44 AM | 11,492 Views
Not much interest over in the Balsa Builders forum regarding the Plank, so the build log will continue here.

This one is called "The Irresistible Plank", a tailless slope soarer from the late 1970's. The original wingspan was in the neighborhood of 110", with a Reflex-S airfoil, and flown as a single channel (rudder). When I returned to the hobby some years ago, I tried to hone my skills by cleaning up, or redrawing a number of plans for Steve Smith at OuterZone. The Plank was one of them.

Since the club does not possess a winch, and I'm not inclined to build a high-start, I decided to take the original design and scale it down (so it would fit in the car) and add a folding prop electric motor. I've also added elevators to the center section of the wing, and aileron/flaperon/spoilerons to the outboard panels.

Finally got back to The Plank........got the fuselage sides and formers assembled......working on the outboard starboard wing panel. I've decided to make the wing flat because I have aileron/flaperon/spoileron control. The original glider had a polyhedral wing and was rudder only.. Decided on dual I-beam spars. Spar joiners are 1/8" birch ply. Shear webs are 1/8" balsa. Wing will be D-boxed from the LE back to the first spar, and V-boxed at the TE . Ribs will be capped...See, I can build with balsa..LMAO

A bit more progress on The Plank..wings are D and V-boxed, ribs are capped (except at the panel joints) , and the wings have been rough sanded..now for the middle section
Posted by Old_Pilot | Oct 02, 2021 @ 11:32 AM | 12,486 Views
Slight detour....it's what happens when you and your flying buddies are drinking coffee, watching it rain, and spit-balling airplane ideas...

35" compound delta wing
KF-2 airfoil
Powerfun 11 blade 70mm fan with a 3400kv motor
80 amp ESC
3000 mah 60 C 4S
17 gram metal gear digital servos
Admiral 8 channel receiver
Posted by Old_Pilot | Sep 24, 2021 @ 07:28 AM | 14,966 Views
Finally had to replace my old combat ship

36" WS, KF-2 airfoil
3530-1200 Kv motor
8x6 APC-E
17gr MG digital servos
Admiral 8 channel receiver
60 A ESC with 5V/5A BEC
2600 mah 60C 4S battery

SOMETIMES, BIGGER ISN'T BETTER.........
Posted by Old_Pilot | Sep 15, 2021 @ 07:29 AM | 10,823 Views
Mike,

I've used vellum (tracing paper) to cover a few of my birds (Alvin, Clearprint, Helix, etc). It's a lot stronger that tissue, but not as strong as Mylar, has no directional grain so it shrinks uniformly, and it accepts paint readily.

You can also use brown paper, but it's heavy. I've never tried the iron on fabrics, though lots of people have had great success with it
Posted by Old_Pilot | Sep 13, 2021 @ 06:00 AM | 11,387 Views
This is as close as we could come to "formation" flying....LOL
Posted by Old_Pilot | Sep 03, 2021 @ 01:55 PM | 27,062 Views
Just finished these two .... one for a flying buddy, and one for me (the green one) ........

I changed the color scheme and the livery for the green one ... the inspiration came from the Luftwaffe squadrons of WWII, with a lot of poetic license.
Hope you guys like it

Keep your nose up in the turns

C
Posted by Old_Pilot | Aug 17, 2021 @ 07:11 AM | 22,099 Views
Finally got the drawings in shape, developed the patterns and parts, and wrote the NC code
Posted by Old_Pilot | Aug 16, 2021 @ 07:07 AM | 20,359 Views
My wife is really into feeding Hummingbirds, and she's always coming up with new feeder ideas.......I've made them out of spice jars, Margarita Salt containers, plastic bottles, etc...here's the newest one...test tube feeder ....a bit of 1/8" ply and a dowel
Posted by Old_Pilot | Aug 13, 2021 @ 05:32 PM | 21,660 Views
Just about finished with the drawings of the Plank, but I had to rebuild the jet fleet....was down to one
Posted by Old_Pilot | Jul 30, 2021 @ 06:43 AM | 14,414 Views
I discovered OuterZone.co.uk when I first returned to the hobby in 2012. OZ was still fairly new, and I ended up volunteering to help clean and or redraw some of the plans that had been submitted. Long story short, one of the plans that I redrew was "The Irresistible Plank", a large flying wing from the late 1970's (MAN Jan. 1979). I never built it........well until now.....I've been searching for something different to build, so I'm going to give this one a try. Other projects are on hold for now....The original aircraft had a 110" WS.....gonna scale it down to ~ 72", and make it a powered glider...stay tuned
Posted by Old_Pilot | Jul 21, 2021 @ 06:08 PM | 16,561 Views
My friend Tom, chasing one of my flat jets

Einzpfeil Chase 1 (2 min 30 sec)