Dan's Radio ControlledSailplanes



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The Hi-Start Launch.

There is a hook on the bottom of the sailplane. Four hundred feet of surgical tubing and nylon cord are stretched and then used to pull the plane up. The line drops off and then it is up to the pilot to find rising air and skillfully use this to gain even more altitude. Typical flights are from three to 15 minutes. This is my favorite way to launch sailplanes.

Schweizer TG-3

Manufacturer

Dave's Aircraft Works

Wingspan (in)

71

Length (in)

41

Wing Area (sq in)

609

Weight (oz)

38

Wing Loading (oz/ sq ft)

9.0

Airfoil

Thinned Clark-Y



This is my first radio controlled sailplane.  I gave it to my brother, Gus, after a couple of years of hard use.

Multiplex Alpha Junior

Manufacturer

Multiplex

Wingspan (in)

84

Length (in)

41

Wing Area (sq in)

632

Weight (oz)

41

Wing Loading (oz/ sq ft)

9.5

Airfoil

SD 8040 mod.


My beautiful second sailplane, from Germany.  2006: I folded the wing on launch off the winch in high wind.  I have a new one in the box, though . . .

MH42

Builder

Dan Tandberg

Wingspan (in)

102

Length (in)

51

Wing Area (sq in)

1024

Weight (oz)

47

Wing Loading (oz/ sq ft)

6.6

Airfoil

MH 42


This is the first rc sailplane that I designed and built from scratch.  The strip ailerons didn't work at all on this polyhedral ship and I took them off.

Olympic II

Manufacturer

Skybench Aerotech

Wingspan (in)

100

Length (in)

49

Wing Area (sq in)

928

Weight (oz)

38

Wing Loading (oz/ sq ft)

5.8

Airfoil

10% thick flat bottom


This sailplane was given to me by Richard Shagam. I am the fourth or fifth owner of this graceful old classic!!  I recently passed it on to Zak, a new ASA club member.

SD7080

Builder

Dan Tandberg

Wingspan (in)

100

Length (in)

50

Wing Area (sq in)

707

Weight (oz)

49

Wing Loading (oz/ sq ft)

10.0

Airfoil

SD 7080


This was my first four servo wing (flaps and ailerons). Mike Carris gave me the wing. After about a hundred flights, I folded up the wing on launch. [R.I.P.]

Optima Pro

Manufacturer

World Micro Planes

Wingspan (in)

97.5

Length (in)

50

Wing Area (sq in)

800

Weight (oz)

59.8

Wing Loading (oz/ sq ft)

10.8

Airfoil

Under cambered


This Czech sailplane is heavy, but flies great in high wind. It has ailerons and spoilers. The fuselage finally broke up and the plane now flies as a slope glider with a new fuse.

Bird of Time

Manufacturer

Dynaflite

Wingspan (in)

118

Length (in)

50

Wing Area (sq in)

1070

Weight (oz)

59

Wing Loading (oz/ sq ft)

7.9

Airfoil

9.5% flat bottom


One of the best radio controlled sailplanes form the 1970's.  Original design by Dave Thornburg who still flies locally. Recently passed this on to Rocky Stone, but have a new in box kit in my shop.

Spoiled Lady

Manufacturer

Carl Goldberg

Wingspan (in)

78

Length (in)

41

Wing Area (sq in)

630

Weight (oz)

26

Wing Loading (oz/ sq ft)

5.9

Airfoil

RG 14


This is the first model sailplane for many pilots. I added the spoilers after I had flown it a lot.  The spoilers help you land more precisely.  It also flies with an electric fuselage.

Riser 100

Manufacturer

Sig

Wingspan (in)

100

Length (in)

48

Wing Area (sq in)

1000

Weight (oz)

45

Wing Loading (oz/ sq ft)

6.5

Airfoil

Eppler 205


Rudder, elevator, and spoilers.  An old standard class sailplane that is still a joy to fly. I finally gave this away to Carlos Reyes after he got some important files off of a crashed hard drive.

Roter Kasten



Builder

Dan Tandberg

Wingspan (in)

102

Length (in)

51

Wing Area (sq in)

1024

Weight (oz)

46

Wing Loading (oz/ sq ft)

6.4

Airfoil

MH 42


"Roter Kasten" means "Red Crate". One of my favorites.  2006: Traded it away to Dennis Clingan for a stepladder.

Red 'n White

Builder

Dan Tandberg

Wingspan (in)

104

Length (in)

50

Wing Area (sq in)

1091

Weight (oz)

59

Wing Loading (oz/ sq ft)

7.8

Airfoil

SD 7037


This wing is fiberglass over balsa over white foam. Richard Dick built it.  Flies great off the winch or on the slope.

Aspire

Manufacturer

Hangar 9

Wingspan (in)

79

Length (in)

45

Wing Area (sq in)

680

Weight (oz)

29

Wing Loading (oz/ sq ft)

6.1

Airfoil

Selig 7037


Rudder (pull-pull) and elevator.  Still flying great after almost ten years. The blue Monokote is fading badly, though.

The Edge

Manufacturer

Northeast Sailplanes

Wingspan (in)

123

Length (in)

51

Wing Area (sq in)

980

Weight (oz)

65

Wing Loading (oz/ sq ft)

9.6

Airfoil

SA 7036


My first "full house" molded sailplane. Crashed after about 400 flights. I miss her.

Yellow HLG


Builder

Dan Tandberg

Wingspan (in)

57

Length (in)

30

Wing Area (sq in)

330

Weight (oz)

10.5

Wing Loading (oz/ sq ft)

4.6

Airfoil

Flat Bottom


I bought the wing at a sidewalk sale.  Broke the fuselage flying it off the Albuquerque volcanoes.  Now fitted with a new pod and boom fuselage, it is my best light wind sloper.

Typhoon-S   

Builder   

Dan Tandberg

Wingspan (in)

106

Length (in)

50.3

Wing Area (sq in)

764.3

Weight (oz)

52

Wing Loading (oz/ sq ft)

9.8

Airfoil

SA 7036


Mike Carris built this wonderful wing for his own Typhoon electric sailplane..  He gave it to me after "landing" on the roof of the gym next to the Corrales post office.  It's now not nearly as pretty as it was, but it flies very well.  The "-S" on  the name signifies 'sailplane', 'salvaged', or what he uttered when it crashed.  [R.I.P.: I launched it with the radio off at the CASL contest 2005.]

Chrysalis



Manufacturer

DJ Aerotech

Wingspan (in)

78.5

Length (in)

50.5

Wing Area (sq in)

723

Weight (oz)

30

Wing Loading (oz/ sq ft)

6.0

Airfoil

Proprietary


This two meter sailplane has an elliptical wing planform.  Flies very well in light lift, yet penetrates like an open class molded ship. It was built from a beautiful DJ Aerotech kit. It now has an electric fuselage, too.

 

Cookie-75



Builder   

Dan Tandberg

Wingspan (in)

75

Length (in)


Wing Area (sq in)

450

Weight (oz)

16.5

Wing Loading (oz/ sq ft)

5.28

Airfoil

SA 7036


I designed this especially for the ASA "Hiss 'n Boink" contest.  It is very light and launches well off a small hi-start.  The v-tail is contest grade balsa glassed with 3/4 oz. cloth.  It also flies with an electric fuselage: speed 400, 7xGP1100. [R.I.P. 2010 at the La Bajada slope site.]

Cookie-112



Builder   

Dan Tandberg

Wingspan (in)

112

Length (in)

50.4

Wing Area (sq in)

950

Weight (oz)

42

Wing Loading (oz/ sq ft)

6.4

Airfoil

SA 7036


This is a 1.44 scale version of the Cookie 75.  It has carbon fiber spar caps and can withstand a full pedal winch launch.   Currently my best open-class RES glider. Also flies well with a new electric pod and boom fueslage.

Addiction



Manufacturer

Fred Sage

Wingspan (in)

122

Length (in)

51

Wing Area (sq in)

980

Weight (oz)

70

Wing Loading (oz/ sq ft)

10.3

Airfoil

SD 7037


Buzz Averill crashed this model and he sold me the wing (undamaged) for just a tad more than the price of the servos.  This is an amazing sailplane!  I have also built an electric fuselage: Hacker 40, 7xGP3700 cells, Hacker-Jeti 125 controller.

Alcyone



Builder   

Bob Woods

Wingspan (in)

121

Length (in)

54

Wing Area (sq in)

948

Weight (oz)

70.5

Wing Loading (oz/ sq ft)

10.7

Airfoil

SD 7032 to 37


Stan Johnson got this from Bob Woods, the original builder, and he passed it on to me.  The kit came from around 1992 or so.  A fun, forgiving, stable flier.

Spirit Elite



Builder   

Dan Tandberg

Wingspan (in)

78.5

Length (in)

46

Wing Area (sq in)

645

Weight (oz)

35

Wing Loading (oz/ sq ft)

7.3

Airfoil

SA 7035-36

R.I.P., Summer 2006.  Launched with the wrong model on the transmitter.  Have a replacement in the box, but haven't built it yet.

Playboy



Builder   

Dan Tandberg

Wingspan (in)

68

Length (in)

43

Wing Area (sq in)

568

Weight (oz)

16.75

Wing Loading (oz/ sq ft)

4.25

Airfoil

proprietary

This was an old free flight model wing that Chuck Auerbach threw out when he moved.  This is a great light-weight glider!

 

Omega 1.5



Mfg   

Frankenmodellbau

Wingspan (in)

59

Length (in)

34

Wing Area (sq in)

333

Weight (oz)

14.5

Wing Loading (oz/ sq ft)

6.27

Airfoil

SD 7035 mod

Doesn't thermal very well, but one of my favorite small aileron slope gliders.  Bought it on consignment at Hobbies 'n Stuff for servo price.

Easy Glider



Mfg.   

Multiplex

Wingspan (in)

70

Length (in)

44.5

Wing Area (sq in)

648

Weight (oz)

27.75

Wing Loading (oz/ sq ft)

6.2

Airfoil

under cambered

This is a wonderful first "foamy" sailplane model for new pilots, either off the slope or from a high-start.  An adjustable tow hook is a useful modification.

Cookie 85



Builder   

Dan Tandberg

Wingspan (in)

85

Length (in)

40

Wing Area (sq in)

526

Weight (oz)

26.5

Wing Loading (oz/ sq ft)

7.43

Airfoil

SA 7036

This is an electric glider for the new ASA 'Outrunner' class.  Hacker A20-20L, 13x8 folding prop, 7x1400 mAh,  Intellect NiMH battery pack.

Helen-J



Builder   

Dan Tandberg

Wingspan (in)

72

Length (in)

46

Wing Area (sq in)

632

Weight (oz)

22

Wing Loading (oz/ sq ft)

5.0

Airfoil

Flat bottom

Helen Johnson of Hobbies 'n Stuff gave me this broken up wing that was dropped off at the store.  I rebuilt and recovered it and made a new tail and pod-and-boom fuse.  I think it was originally an Olympic 650.   Flies great!

Cookie 142



Builder   

Dan Tandberg

Wingspan (in)

142.5

Length (in)

70

Wing Area (sq in)

1650

Weight (oz)

78

Wing Loading (oz/ sq ft)

6.8

Airfoil

SA 7036

This wonderful, huge glider exploded on winch launch after about 120 flights.  A second version is in the works.

Southwind



Designerer   

Max Mills

Wingspan (in)

99

Length (in)

51

Wing Area (sq in)

780

Weight (oz)

46.25

Wing Loading (oz/ sq ft)

8.54

Airfoil

Eppler 103

This is a wonderful old standard class "woodie", a low wing-loading glider from the early 1990s. In is unusual in that it has flaps for landing and camber, but no ailerons. The model was designed and kitted by Max Mills and his wife Gloria (who have recently returned to Albuquerque!) This plane launches high, signals lift well, and can turn very tightly in narrow thermals. It is a joy to fly!

Bard



Manufacturer   

The World Models

Wingspan (in)

80

Length (in)

36.5

Wing Area (sq in)

409

Weight (oz)

37

Wing Loading (oz/ sq ft)

13.0

Airfoil

Proprietary

This is a small, somewhat heavy, semi-scale glider intended for slope soaring. At this point, it has only been flown off of a high start. The wing is foam, skinned with balsa, covered with Monokote.

ASW-19



Manufacturer   

Robbe

Wingspan (in)

123.3

Length (in)

53.2

Wing Area (sq in)

822

Weight (oz)

91

Wing Loading (oz/ sq ft)

15.9

Airfoil

Eppler 193

This is my first large scale glider. It has been flown off the winch, but it is really intended for slope or aerotow. The wing is foam, skinned with balsa, covered with Ultracote. [R.I.P. Crashed on tow, Summer 2011.]

Laser



Builder   

Dan Tandberg

Wingspan (in)

124

Length (in)

63

Wing Area (sq in)

1000

Weight (oz)

59

Wing Loading (oz/ sq ft)

8.5

Airfoil

SA 7035

This wing was given to me by Fred McClung after a long post-crash incubation in the rafters of his shop. I had to repair several delaminations, and other dings. The replacement fuze is a Hi-Aspect pod and boom from Art Hobby. I have made an electric fuselage for this as well

“A1” Hand Launch Glider



Builder   

Unknown

Wingspan (in)

59

Length (in)

38.5

Wing Area (sq in)

410.5

Weight (oz)

9.5

Wing Loading (oz/ sq ft)

3.33

Airfoil

undercambered

This is a 1.5m free-flight hand launch glider, probably a German kit from the 1970s. It is balsa and Micafilm construction. The motor is a Hyperion Z17 Micro Series outrunner with 6 turns [model number Z-1709-6, 24 grams, 9.5 max efficient current A, KV=2100.] The battery is Flight Power Evo Lite 2S Lipo [45 grams, 800 mAh, 28C, 22.4 A max burst.] The controller is a Castle Phoenix 10 Amp version. It draws 9.8 Amps with a 7x4 APC gray composite propeller [LP 07040SF] I believe this may currently be the electric glider with the lowest wing loading in our club. It flies best with the CG at 50% of the root chord, probably due to its large tail surface area and its older free-flight airfoil. Charlie Zaffery found this up in his attic and graciously passed it on to me; the original builder is lost to history.

Gogi



Builder   

Dan Tandberg

Wingspan (in)

37.25

Length (in)

27.75

Wing Area (sq in)

235.75

Weight (oz)

9.25

Wing Loading (oz/ sq ft)

5.65

Airfoil

flat-bottomed

This was hanging in the hobby shop and for sale cheap! It had two servos and a cheapo GWS 4 channel radio in it. I fixed it up and redid the linkages. I use it in very light conditions off the slope.

Dodo 85e



Builder   

Dan Tandberg

Wingspan (in)

59

Length (in)

38

Wing Area (sq in)

362

Weight (oz)

18.5

Wing Loading (oz/ sq ft)

7.4

Airfoil

SA 7036

This model was made from discarded parts. The fuselage was from Buzz Averill and the wing was from Mike Carris. An electric glider, it has a Czech Mega 16/15/6 brushless inrunner, a Thunder Power 18 A controller, and 1500 MAh LiPo 2S pack. It is, of course, named after the extinct flightless bird.

Multiplex Alpha Junior Electric Version



Builder   

Dan Tandberg

Wingspan (in)

84

Length (in)

40

Wing Area (sq in)

632

Weight (oz)

53.5

Wing Loading (oz/ sq ft)

12.2

Airfoil

SD 8040 mod

This is the alpha junior with an electric fuselage and t-tail. The motor is a Mega 22/20 with 3 turns, the controller is Castle Phoenix 60, and the battery is FlightPower 3200 mAh 2S. I am running it at 58 Amps (430 Watts.) This sailplane is perfect for those days when it it "too windy to fly."

Cookie 67 Electric



Builder   

Dan Tandberg

Wingspan (in)

67

Length (in)

38.5

Wing Area (sq in)

455

Weight (oz)

10.75

Wing Loading (oz/ sq ft)

3.4

Airfoil

SA 7036

This is an ultra light-weight version of the Cookie series. It is balsa, spruce, carbon and Ultracote Lite construction. Like the “A1” Hand Launch Glider above, the motor is a Hyperion Z17 Micro Series outrunner with 6 turns [model# Z-1709-6, 24 grams, 9.5 max efficient current A, KV=2100.] The battery is a Rhino 3S 360 mAh Lipo. The controller is a 10 Amp Castle Phoenix. It draws 8.9 Amps with a 6x3 propeller. This is a wonderful electric glider in light lift conditions. It launches well and will thermal on the smallest puff of upgoing air.

Modified Southwind Electric



Manufacturer   

Max Mills

Wingspan (in)

100

Length (in)

51

Wing Area (sq in)

853

Weight (oz)

55

Wing Loading (oz/ sq ft)

9.3

Airfoil

Eppler 103

This is an extra strong electric verson of Max Mills' SouthWind from the 1990s. He built this wing while living in Texas, gave it away, and had it returned after crashing. The spar was undamaged, and it was fairly easy to repair. It is balsa, spruce, carbon and Ultracote Lite construction and has had spoilers installed. The motor is a Mega 20/22/3 inrunner. The Mega gearbox is 3.33:1 The controller is a Castle Phoenix 60 Amp version. The fuselage is from Andre at Art Hobby.

Redback EPP Slope Pylon Racer



Manufacturer   

DezzaMet Pty Ltd (Australia)

Wingspan (in)

59.6

Length (in)

35.4

Wing Area (sq in)

340

Weight (oz)

35.4

Wing Loading (oz/ sq ft)

11.65

Airfoil

HN354 mod

This is an EPP foam slope racer kitted in Australia. V-tail and ailerons. Flies great in big wind, thanks to the high wing loading.

Playboy Electric



Designer

Joe Elgin

Wingspan (in)

68

Length (in)

37

Wing Area (sq in)

568

Weight (oz)

31

Wing Loading (oz/ sq ft)

9.1

Airfoil

proprietary

This is an electric version of the antique (1940) Playboy. Built (with lots of help) from old plans borrowed from Richard Dick. The motor is a Neodyn 450-880 outrunner powered with a Thunder Power Extreme V2 3S 2200 maH LiPo battery. You'll need at least an 18 A brushless controller. A delight to fly!

Tern 74



Builder

Max Mills

Wingspan (in)

74

Length (in)

45.5

Wing Area (sq in)

447

Weight (oz)

26 1/4

Wing Loading (oz/ sq ft)

8.5

Airfoil

RG-15

This wing was a gift from Max Mills, who built it decades ago from a forgotten kit. The fuselage is an Andromeda pod and boom from Art-Hobby. Power is with a Czech Mega Motor ACn16/15/6, a Thunder Power TPE-18SGB3 ESC, an Aeronaut 11 x 7 folding prop, and a Thunder Power Extreme V2 2200 LiPo battery. The Tern 74 flies wonderfully.  It launches well, recovers from a stall gracefully, and turns tightly is very small thermals. [R.I.P. 2011 Crashed at Green's Peak at camp during a wind storm. Blew 1.2 mile away before going down.]



RES-Monster



Designer

Jack Womack

Wingspan (in)

155

Length (in)

79

Wing Area (sq in)

1383

Weight (oz)

84 1/4

Wing Loading (oz/ sq ft)

8.77

Airfoil

SD 7037

Jack and I were waxing poetic about "big wings" out at Amarillo and he remembered that he had this crashed one up in the rafters of his garage.  He graciously gave it to me, even brought it up to Albuquerque.  Wouldn't take a cent for it.



Local Slope Aspirant



Designer

Dan Tandberg

Wingspan (in)

72

Length (in)

53

Wing Area (sq in)

864

Weight (oz)

76

Wing Loading (oz/ sq ft)

12.7

Airfoil

Clark-Y

This is a 4mm Coroplast slope plane for 20+ mph conditions. The spar is carbon arrow shafts with spruce caps. The ribs are wire-cut foam to support the skin. The wing root ribs are carved from 3/4" pine, 2" wide, joined with 1/4" dowels and epoxy. Wing construction was with Gorilla Glue and woodpecker holes. The fuse is machined from pine with 1/8" plywood sides. The boom is a carbon driver shaft from the Goodwill. I designed this high wing loading very strong glider to someday try to fly off Sandia Crest. The name is, of course, an anagram. Currently it is stored in the top of a tall pine tree at Green's Peak.



RES-Monster Electric



Designer

Jack Womack

Wingspan (in)

155

Length (in)

77

Wing Area (sq in)

1383

Weight (oz)

93

Wing Loading (oz/ sq ft)

9.6

Airfoil

SD 7037

Here is the RES-Monster with its new electric fuselage. Axi 4120-14, 5S x 3850 Lipo, Castle 60 A controller. Blows your hat off when you launch it.



Cookie 90 Electric



Designer

Dan Tandberg

Wingspan (in)

90.25

Length (in)

51

Wing Area (sq in)

760

Weight (oz)

37

Wing Loading (oz/ sq ft)

7

Airfoil

SA 7036

Here is the latest version of my electric F5J Cookie series. It has bigger relative cord for better visibility at altitude and has been designed for use in altitude limiter contests. It has a Turnigy Aerodrive XP TR 35-36C 1100kv brushless outrunner, 3S 1350 mAh Lipo, Castle Phoenix 40 A controller, and is running an 11x7 Aeronaut folding propeller.



Troglodyte



Designer

Dan Tandberg

Wingspan (in)

76

Length (in)

45

Wing Area (sq in)

652

Weight (oz)

39 1/4

Wing Loading (oz/ sq ft)

8.66

Airfoil

Clark Y

This fuselage was left over from a crashed Spirit Elite that was given to me. The wing was obtained during a club auction. Put the single spoiler in the middle. Makes a good sloper.



Chrysalis Electric



Designer

DJ Aerotech

Wingspan (in)

78.5

Length (in)

46

Wing Area (sq in)

723

Weight (oz)

28.75

Wing Loading (oz/ sq ft)

5.73

Airfoil

proprietary

I have flown this wing with the stock glider fuselage for many years. I recently fitted it with an Art-Hobby fuselage, Hacker A20-20L brushless outrunner, Hacker 30 amp controller. It flies wonderfully and will go up in very light air.



Cookie 79



Designer

Dan Tandberg

Wingspan (in)

79

Length (in)

48

Wing Area (sq in)

685

Weight (oz)

23.5

Wing Loading (oz/ sq ft)

4.9

Airfoil

SA 7036

This is a two meter version of my Cookie series sailplanes. It was built with very light wing loading and a long tail boom specificly for our local "Hiss 'n Boink" contests, where points are given for scale landings that "hiss" with no rotation. The airfoil is SA 7036 as are all the Cookie series.



Electra



Designer

Tops Models

Wingspan (in)

100

Length (in)

55

Wing Area (sq in)

768

Weight (oz)

66

Wing Loading (oz/ sq ft)

12.4

Airfoil

proprietary

This wing was passed along to me from LP How after he crashed it rather badly at La Bajada. I built a new pod and boom fuselage and installed a Turnigy Aerodrive Xp SK Series SK35-42 1000kv outrunner, a Turnigy plush 60A ESC, a 2200 mAh 3S lipo, with a 12x8 Aeronaut folding CAM prop. It flies wonderfully, especially in windy conditions. thank you, L.P.!



Omega 101e



Designer

?Frankenmodellbau

Wingspan (in)

101

Length (in)

52

Wing Area (sq in)

680

Weight (oz)

44.25

Wing Loading (oz/ sq ft)

9.3

Airfoil

proprietary

Buzz Averill passed this wing on to me after someone else crashed it. I put Hitec HS-81 and 81MG servos in the wing. The fuse is an Art Hobby Odyssey pod and boom. The motor is a Hacker Evo A20-12XL 1039 kv outrunner. I am using a Castle Creations Phoenix Ice Lite 50 A ESC and 1800 mAh 3S Lipo battery. The propeller is an Aeronaut 11x7 CAM folder. This results in a 120 Watts per pound climb to soaring altitude.



Lark 69e

Builder

Dan Tandberg

Wingspan (in)

69

Length (in)

39

Wing Area (sq in)

469

Weight (oz)

23.75

Wing Loading (oz/ sq ft)

7.3

Airfoil

Under cambered


This small electric glider has spoilers, a v-tail, and motor control. The wing was built by John Adair and its origin is unknown. Turnigy 2830 1000kv motor, 1000 mAh Turnigy battery, Hitech micro servos, 10 x 6 folder. The long fuselage and generous tail feathers contribute to excellent thermal detection.

Palio 100e



Designer

Scorpio

Wingspan (in)

99

Length (in)

45

Wing Area (sq in)

806

Weight (oz)

52

Wing Loading (oz/ sq ft)

9.3

Airfoil

proprietary

This is an older Czech-designed RE sailplane. It is fitted with an inexpensive KDA 36-10L 1185 kv outrunner and a Turnigy AE-45A ESC. The battery is an 1800 mAh 3S Lipo turning an Aeronaut 11x6.5 folding prop. This sailplane draws 40 A with a fully charged battery and climbs briskly at 135 Watts per pound. Flying a lightweight rudder elevator controlled sailplane in light lift is one of my favorite things to do! Sold to Rocky Stone who flies it very well.



La Bajada Bomber

Builder

Dan Tandberg

Wingspan (in)

122

Length (in)

50

Wing Area (sq in)

952

Weight (oz)

94

Wing Loading (oz/ sq ft)

14.3

Airfoil

RG-15


This 3.1 m wing was crashed by Fred McClung and looked to be pretty much a goner. The spar was ok, but there were about 20 big cracks and delaminations. He gave it to me when he moved and I decided to rebuild it into a big heavy slope glider for windy conditions. It took a long time to fix it, though. Buzz thinks the wing is from an old Austrian F3B Eagle. I don't remember for sure what models the fuse and tailfeathers were scavenged from.

Reichard Ellipsoid 108

Design

Reichard Modelsport

Wingspan (in)

108

Length (in)

47

Wing Area (sq in)

725

Weight (oz)

51

Wing Loading (oz/ sq ft)

10.1

Airfoil

SD 7080


This 2.8 m Czech motorized glider was crashed and given to Buzz. He passed it on to Dennis Clingan, who recently gave it to me. There was some slight wing damage, some cracks in the fuselage, and some breaks in the horizontal stabilizer. It took about two weeks to fix it all up. It has been fitted out with a KDA 36-08XL outrunner motor and flys very well. It will circle in the tightest thermals without tipstalling. With an 1800 3S LiPo and a 14x8 folding prop it produces about 400 Watts and launches aggressively.

WS92

Design

Dan Tandberg

Wingspan (in)

92

Length (in)

46

Wing Area (sq in)

587

Weight (oz)

54

Wing Loading (oz/ sq ft)

13.0

Airfoil

Unknown thick undercambered


This 2.34 m motorized glider was made up out of parts that had been left over from our club raffle and stored in barrels in Rocky's barn. I picked out the wing and fuse and Buzz gave me the stab. It has been fitted out with a Turnigy 3635 1100kv outrunner motor and a Turnigy plush 60A controller. With an 1800 3S LiPo and a 12x8 folding prop it produces about 380 Watts and launches sharply. It also thermals surprisingly well for having such a high wing loading.

Pulsar

Design

GIR Model

Wingspan (in)

79

Length (in)

44

Wing Area (sq in)

498

Weight (oz)

22.5

Wing Loading (oz/ sq ft)

6.5

Airfoil

thin undercambered


This 2-meter motorized glider was made up out of parts. The wing is (probably) from a Pulsar 2 meter. This was given to me by another modeler. It has two ailerons and a single flap. The fuse is a scratch built pod (balsa, ply and glass) and boom (carbon arrow shaft.) V-tail area is about 13% of the wing. It has been fitted out with a Hacker A20-20L 1022 kV 200 W outrunner motor and a Turnigy Plush 30A controller. With an 800 3S 20C LiPo and a 13x9 folding prop it produces way over 225 Watts. With this prop you will need to set the high throttle end point adjustment down to keep from overpowering and overheating the motor. It thermals wonderfully and and launches quite briskly. Will be used in ALES contests, I think.

Sagitta XC

Manufacturer

Airtronics Kit

Wingspan (in)

177"

Length (in)

70

Wing Area (sq in)

2100

Weight (pounds)

11.5

Wing Loading (oz/ sq ft)

12.6

Airfoil

Eppler 205


This 4.5-meter motorized cross-country glider was made from an Airtronics kit that I bought from Lee Goettsche. He started it but only finished the spar, airfoiled stab and larger than stock rudder. It came with an aftermarket 6" longer than stock fiberglass fuselage. I built it with flaps for landing and have them set up as spoilerons. It has been fitted out with a Turnigy Aerodrive SK3 - 5055-430kv brushless outrunner motor and a Turnigy Plush 80A controller. With an 4000 mAh 5 cell 30-40C LiPo and a 17x9 folding prop it produces 1330 Watts at 75 Amperes. It flew perfectly the first flight, even in the brisk winds. It turns very well with the spoilerons and bigger rudder. Thanks to Rocky Stone for giving it a monster heave! Hoping to to get Lee out soon to bend the sticks.

Cookie 79e



Designer

Dan Tandberg

Wingspan (in)

79

Length (in)

46

Wing Area (sq in)

685

Weight (oz)

30

Wing Loading (oz/ sq ft)

6.3

Airfoil

SA 7036

This is an electrified two-meter version of my Cookie series sailplanes. The pod and boom fuselage design has been retained while the aspect ratio has been diminished from the original Cookie 85 plan-form for better high altitude visibility. It was built with very light wing loading and a longish tail boom, 58% of span. The airfoil is the Selig/Ashok Gopalarathnam SA 7036 which is a 9.2% thickness design optimized for light lift conditions. Power system: Hacker A20-20L outrunner, Turnigy Plush 30A ESC, 1000 mAh 3S Lipo pack.



Photon II



Builder

Dan Tandberg

Wingspan (in)

58

Length (in)

41.5

Wing Area (sq in)

371.9

Weight (oz)

12.5

Wing Loading (oz/ sq ft)

4.74

Airfoil

Drela AG-16

Originally designed by Jerry Krainock. Passed down from Jon Davis. Started out as a discus launched glider, but now launches with a high start. Excellent flier.



Spirit



Builder

Dan Tandberg

Wingspan (in)

78.75

Length (in)

48

Wing Area (sq in)

680

Weight (oz)

27

Wing Loading (oz/ sq ft)

5.71

Airfoil

modified Selig 3010

This plane started out its life long ago as a two-meter Spirit built by some long forgotten modeler. It was crashed badly and the wing seems to have been passed around to several people, ending up with Nick Pergakis. When he moved away, he passed it on to Jim Correll, who decided not to fix it and instead gave it to me. I have built it as both a high start glider and an electric version and both fly very well. It launches briskly with a 1000 mAh 3S LiPo battery, a Turnigy 30A controller, and a wonderful new Turnigy SK3 2836-1500 kv outrunner that easily handles 30 A peak current. Currently a 10x6 Aeronaut CAM prop is being used.



DW 121



Builder

Dan Tandberg

Wingspan (in)

121

Length (in)

49.5

Wing Area (sq in)

963

Weight (oz)

83.3

Wing Loading (oz/ sq ft)

12.5

Airfoil

SD 7037

This wing was started by Dave Williams of Placitas, NM. I never have met him, but we was clearly an outstanding modeler. He had the cores cut and got the balsa sheeting done, but then never finished it. I recently acquired the wing and the nice glass fuse. The tail is from a crashed Bird of Time. It launches nicely with a 2200 mAh 3S LiPo battery, a Turnigy 60A controller, and a Turnigy SK3 3542-1250 kv outrunner. With a 12 x 6.5 prop it easily handles 55 A peak current without getting more than a little warm. I am still flying it a bit on the nose-heavy side, but it still signals lift well and flies aggressively, even in high winds. I am really enjoying flying this model.



Yellow Bird 122



Builder

Dan Tandberg

Wingspan (in)

122

Length (in)

64

Wing Area (sq in)

885

Weight (oz)

68.7

Wing Loading (oz/ sq ft)

11.2

Airfoil

Unknown

This sailplane is called the “Yellow Bird 122”. I built it on a whim—one day I decided just to pull old abandoned junk out of the rafters and make up a three-meter electric sailplane. The yellow outer panels appear to be balsa-sheeted foam with plastic Hoerner-type winglets. I have no idea where they came from. I traced the airfoil and built up a sheeted center section to make it 3 meters. The tail pieces seem to be from a large Pulsar-style glider. (I think Buzz left them in the back of my truck.) The fuse pod is glass and carbon from an Adriana Hotliner, probably left over from the John Adair post-auction fire sale. The boom is tapered carbon, not sure from where. Power is by a Turnigy Aerodrive SK3 - 3542-1250kv Brushless Outrunner Motor (US Warehouse) with a 60 Amp Turnigy ESC and 2200 3S Lipo. Prop is 12.5 x 6.5 Aeronaut folder with the top end point reduced to keep it under 54 max Amps. Flies like a dream.



Redwing 109



Builder

Dan Tandberg

Wingspan (in)

109

Length (in)

48

Wing Area (sq in)

701

Weight (oz)

74.5

Wing Loading (oz/ sq ft)

15.3

Airfoil

? Clark-Y

This plane will be a heavy-ish sloper. The wing was left over from the Auction. The fuse is from an old crashed and repaired Bird of Time. The Tail is unknown. The rudder is from a Terry Pierce crash.



Supra Electric



Designer

Mark Drela

Wingspan (in)

134

Length (in)

59

Wing Area (sq in)

1052

Weight (oz)

79

Wing Loading (oz/ sq ft)

10.8

Airfoil

Drela AG40-43

I bought this lightly used electric sailplane from Bruce Twining in near perfect condition. This is the electric version of the Supra with the elevator and rudder servos in the fin. It launches with a Neu 1506 - 3Y motor with 6.7:1 gearbox, a Castle Creations 80 Amp controller , a carbon 20x12 prop and spinner, and a 5s 1800 mAh Lipo pack. Airtronics 94761 55.0 oz-in digital servos are used for all surfaces. So far I am very happy with its performance.



An Observation

Don't ever let your spouse see more than two or three of your sailplanes out at one time. They may think you are developing a serious problem!