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Old_Pilot's blog
Posted by Old_Pilot | Mar 19, 2015 @ 06:01 PM | 1,902 Views
No complaints

Motor: Powerforce G15 (LC3542/6T) 920 kV 42A max 36A load
ESC: 40A
Batteries: 3300 3S or 2200 4S
Prop: 11x6 (ESC gets a little hot) probably change to a 10x6
Servos: Towerpro MG90S Micro
Receiver: Lemon 6 channel mini (DSMX/DSM2)

Post maiden notes:
1. PLENTY of power (4s)..unlimited vertical at FT.
2. Plenty of aileron and elevator control....dampened with 35% expo and 80% travel adj in trans.
3. Not enough rudder....already changed.
4. Less than 10 deg of flaps and she'll all but stop in mid air....
5. She'll land dead stick with ease..no tip stall...she'll land even slower with flaps....
6. Good sport plane with a 3s....unbelievable with a 4s.......and I'm sold on sewn hinges !

Altagerra Maiden (3 min 35 sec)

Posted by Old_Pilot | Mar 03, 2015 @ 06:14 AM | 1,591 Views
2nd entry in BBCC 6......wont's start on it until after I finish the Altagerra

Posted by Old_Pilot | Feb 19, 2015 @ 05:17 PM | 3,968 Views
35" foam combat ship derived from a 1964 C/L stunt/combat wing called the Blue Bayou....haven't flown her yet......will post video when the ice melts off the runway !...Continue Reading
Posted by Old_Pilot | Feb 06, 2015 @ 03:22 PM | 2,375 Views
Scratch-built Foamie Contest Build - Einzpfeil 2.0 - Proof of flight...sorry for losing sight of her occasionally. I was busy watching the airplane and not the viewfinder....she's plenty fast and maneuverable...though I don't have the stabilizer gains set correctly....she'd flutter with the stabilizer engaged, but only at full throttle.....

Einzpfeil 2 Maiden (5 min 20 sec)

Posted by Old_Pilot | Feb 01, 2015 @ 01:05 PM | 1,895 Views
This one is a little larger than Einzpfeil 1.0 and not quite as big as Doppelpfeil 2.0....single 70 mm fan, no winglets........Continue Reading
Posted by Old_Pilot | Jan 15, 2015 @ 02:41 PM | 2,353 Views
Sorry for the blank spot at the beginning, but I had to launch her and then grab the camera.....

Einzpfeil Maiden (2 min 29 sec)

Posted by Old_Pilot | Jan 09, 2015 @ 04:39 AM | 2,057 Views
After a few tweaks..........Was nervous about flying her, but after big Al told me she's easy to fly, I flew her the rest of the day......
I'm pleased.....the goal was to develop a more aerobatic aircraft , and she seems capable of just about anything

NasTee Maiden (4 min 56 sec)

Posted by Old_Pilot | Jan 02, 2015 @ 10:23 AM | 1,503 Views
Progress pictures are under the Uberpfeil build, but here's the finished product....will mount the servos and push rods this morning
Posted by Old_Pilot | Dec 03, 2014 @ 01:40 PM | 1,949 Views
Here's another one off that I built for BBCC 3 (almost 2 years ago) and never flew. She was underpowered and tail heavy.....I fixed that and flew her for the first time this morning......she's another one of my one off's that has never been kitted..as far as I know this is the only RC replica of the original......

Bristol 138A Maiden (3 min 7 sec)

Posted by Old_Pilot | Nov 20, 2014 @ 05:31 PM | 1,848 Views
Doppelpfeil 1.0 Maiden (1 min 45 sec)

She's a handful..working on Doppelpfeil 2.0.......

flew her 5 times successfully..it was that "Oh let's put her up one more time" that killed her....got her in the sun, lost orientation, and she went in hard....BUT..the foam board crumpled like the front of a Mercedes, saving all the electrics........
Posted by Old_Pilot | Nov 11, 2014 @ 03:53 PM | 2,826 Views
This is for all the guys on RCAAA......you know who you are !

I've decided to try to build a 3D-ish foamie......so I stole the stuff I liked from 4-5 ARF's and came up with this....takes (2) sheets of 3/16" Elmers board and a 2 liter bottle for the canopy.....I'll revise and annotate once I build her, but you guys get the idea......As always, drawings are on 36x48 paper.. foam board blanks are 40x30.

I did a box fuse because I don't like batteries, ESC's, and Receivers flopping around in the wind !

This ain't Dollar Tree foam !

Preliminary electrics:


Golden Power 2217/6 1500 kV...

No. of Cells: 2 - 3 Li-Poly
Kv: 1500 RPM/V
Max Efficiency: 80%
Max Efficiency Current: 8 - 22A (>70%)
Load Current: 1.6A @10V
Resistance: 0.100 ohms
Max Current: 28A for 60S
Max Watts: 311W for 60S
Weight: 70g / 2.45 oz.
Size: 27.5 mm x 30 mm
Shaft Diameter: 4mm

Buddy RC


Prop : APC E 8060 or 9060 (probably change, but I'm sure either will fly her)

Battery 2100 mah 20C 3S


9 gram...Continue Reading
Posted by Old_Pilot | Oct 31, 2014 @ 10:27 AM | 2,548 Views
I gave up on the CF 105 Arrow after several attempts to get the EDF mounted......came back into the house, sat down at the computer and came up with this......another morph of the Jetstream....

I'll post the drawings and patterns if anyone is interested.

why I gave up on the 105...I fired up the EDF and it wouldn't stay in the bulkheads....nothing seemed to want to stick to the plastic housing of the EDF....'course, watching the motor go through the front of the aircraft in mid-flight might be worth a look or two....or.....once!

Here's the drawing and the patterns.....thanks Rick !

Update 11/5/2014: fitting out and bench testing this morning....and everything was going fine until I heard "CLUNK" and all the fan blades exited the rear of the aircraft and imbedded themselves in the foam backstop I'd set up.....so, two more hatches in the bottom of the fuse and a new impellor. good to go !

Update: 11/7/2014........Too much weight and not enough thrust....and now I have a Concorde....so I eliminated the lower fuse, added another fan and stuck them to the side of the fuse...added a little bit of wing and got the elevons in the jet stream....Continue Reading
Posted by Old_Pilot | Oct 23, 2014 @ 01:36 PM | 2,705 Views
Three more to build...next week

Added 3/8 sq balsa to front of wing and sanded to the shape of a leading edge.

Update: 10/28/2014

APCE 9050 prop

Golden Power 2217/6 1500 kV...

No. of Cells: 2 - 3 Li-Poly
Kv: 1500 RPM/V
Max Efficiency: 80%
Max Efficiency Current: 8 - 22A (>70%)
Load Current: 1.6A @10V
Resistance: 0.100 ohms
Max Current: 28A for 60S
Max Watts: 311W for 60S
Weight: 70g / 2.45 oz.
Size: 27.5 mm x 30 mm
Shaft Diameter: 4mm

Buddy RC

Posted by Old_Pilot | Oct 21, 2014 @ 07:10 AM | 2,285 Views
Preliminary plans and parts for an easy Avro CF-105 Arrow......3/16" PFF and a little balsa (nose). I'll build and fly her sometime next week.....revise and annotate the drawings then.
Foam blanks are 30x40 printed on 36x48 paper. 3-View is not to scale

32" WS x 40" OAL
50% KF airfoil

64mm EDF - 4400 kV
HiTec HS 82 MG servos
3000 mah 30C 3S

Update: I'm going to add a 3/8 sq balsa stick to the front of the wing and sand to shape a leading edge....same thing for the Stealth Stream

Added color scheme......will print the markings

Update....EDF didn't want to stay put when I fired it up........nothing wanted to stick to the EDF housing and the bulkheads
Posted by Old_Pilot | Oct 14, 2014 @ 07:25 AM | 2,918 Views
Several of my buddies at the club asked me if I could make the Jetstream look like the F-117......I cut it out yesterday and will finish the assembly today...hopefully fly her Thursday...weather permitting....The F-117 doesn't translate well to elevons.....but it's close

Parts are on 36x48 paper......blanks are 30x40x3/16 PFF (outline).......Assembly drawing is not to scale

She's a lot easier to cut out ...no curves.....I used a 48" long aluminum sheet rock ruler...took about an hour

Update......My wife said....."OOOO...that's wicked"

The yellow tape is "Frog Tape".....anybody ever used it for hinges ?

Update...flew her this morning....she's a handful...I cut the throws down to 50% and she would still do a nice tight roll......biggest thing I learned........don't fly a flat black airplane against an overcast sky in gusty winds.......I got her down with no damage.. got the right gust at just the right time and plopped her down right in front of me...not even a grass stain....

Today was a much better day to fly......clear and calm...and the runway was cut this morning......perfect

Big Al is the launch crew, I'm the cameraman, and Group Captain Richard "The Gudgeonmaker" is at the controls.

10/16/2014 Flight Notes:

1. Don't paint the bottom an already low-vis airplane sky blue.....What was I thinking ?
2. The 1050 prop seems to be the best all around. 1060 has better speed. 1070 overheats the motor.
3. Best balance point so far is right at the front of the fins.

StealthStream I Maiden (1 min 43 sec)

Posted by Old_Pilot | Oct 13, 2014 @ 11:34 AM | 2,400 Views
I've had a couple of requests for my spreadsheet that calculates tail volumes based on the mean aerodynamic chord and CG....Spread sheet is in the .zip file and the discussion on the values is in the link below..Vv should not be less than 0.03 and Vh should not be less than .5....that's what's worked for me......

I use AutoCAD to find the MAC and AC's graphically, since I draw all my planes before I build them.....makes it easy to play "what-if"......see example (pdf)

http://www.eaa62.org/technotes/tail.htm (Vv and Vh discussion)
Posted by Old_Pilot | Oct 08, 2014 @ 02:53 PM | 2,384 Views
Gunnery Sergeant Carey Ratcliff at the controls......I'm the camera man...guess what.......I have orders for 3 more

Jetstream III (3 min 9 sec)


I'm going to move the fins out another 1/2" each side and enlarge the prop opening to accommodate a 10" prop. Also going to sandwich a piece of 1/16 birch ply to strengthen the nose. Moving the motor to a middle position helps eliminate ballast for balancing. Indicated CG is 1/2" in front of the projected intersection of the trail edge of the KF airfoil. One more thing.....I'm not going to cut off the point of the "cockpit" (which I used for an air inlet), rather I'm going to cut in scoops..(2) in the front facing forward, and (2) exit scoops in the back facing backwards.