Installation of upper fuselage skin with cutouts (above left) for pushrods. 1⁄32- inch sheet balsa base (above center) and 1⁄16-inch sheet balsa intercostals for battery mount. Battery mount (above right) installed between laminated front bulkhead and F3. Cut relief in F2 and forward part of wing as required to nest. Bottom skin (below left) installed with cutout for battery mount. Battery provisions (below center) and close up of area before the additional lower forward skin is added. Ironic that the final flying weight of the R/C conversion
Baby Biwinger (below right) is within a very few grams of the weight of the engine and period propeller that the original freeflight Baby Biwinger was designed for. It bears dramatic witness to how far the technologies in this hobby have come, particularly in the past 10 years, since the last one Daniel had built still had to be freeflight. There was no alternative commercially available back in that time period for a model this size. Up until now, Peanut Scale was still strictly a freeflight event.
cleanest installation so far has always been a “permanent” one with these systems. Wel- come to the age of disposable electronics. 6. Make sure you can see the LED from outside the aircraft to be sure you have solid radio contact.
7. Keep the trim and decoration simple, clean and to a minimum. Besides reducing weight it also makes the model simpler to build. As has been voiced in the past by many Peanut Scale advocates in the hobby, a few well executed details always outper-
form a large host of half hearted details and are always lighter. I could have painted the tires on the wheels black on this model, but like Dorothy’s ruby slippers, those red wheels can transport those who remember them across time and space to a place found only in their youth. A quality difficult to find these days. The model also does not have any clear protective coat on it either in the interest of reduced weight.
8. Use readily available sub assemblies if possible. I find the pushrod replacement part
COMPONENT
MODEL COMPONENT WEIGHT CHART WEIGHT
Upper wing blank Lower wing blank
Extended fuselage side
.025 diameter piano wire LG Wheels (North Pacific) Horizontal stab & elevator Vertical stab & rudder
Fuselage bulkhead assemblies Laminated front bulkhead Interplane struts
Fuselage upper skin Fuselage lower skin
ParkZone PKZ3624 motor assembly GWS EP5043 prop & spinner ParkZone Ember 2Rx and mount Pushrod assemblies Model finished weight 150 mAh flight battery
FLYING MODELS
2.7 grams 2.4 grams
2.0 grams each (2 required) 0.7 gram
0.3 gram each (2 required) 0.65 gram 0.3 gram 0.5 gram 0.2 gram
0.15 gram each (2 required) 0.4 gram 1.0 gram 6.8 grams 2.5 grams 3.9 grams
0.3 grams (each, 2 used)
32.3 grams w/o flight battery (around 1.2 oz.) 3.3 grams
kits from some of the micro R/C aircraft on the market make perfect “kits” for pushrods for your project with only slight modification and the price is not all that unreasonable for what you get in the package.
So there you have it. One solution for transposing this very desirable F/F model into a very flyable and good looking R/C ver- sion with as little effort as possible. With the above general guidelines in mind you should have very little trouble converting any of the following suggested examples on this abbre- viated list to a micro R/C model of your own design.
S.E.-5A
Fokker D-VII Nieuport 11 or 17 1909 Antoinette Bleriot IX 1909 Cessna Monoplane Nieuport Monoplane Avro 560 Monoplane Waco Biplane Travel Air 2000 Rearwin Speedster Ryan NYP monoplane (Spirit of St. Louis) Feisler Storch
Any of the high wing Piper aircraft Any of the high wing Cessna aircraft.
These are just some of the considerations
for a micro R/C subject and I’m sure there are many others that would work and ideas that are applicable. The real trick is to keep the project as simple as possible and therefore, as light as possible. Too much complication usu- ally means a less than satisfactory model. The original plan for the F/F Baby Bi-
winger is included in this article for your convenience.
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