Span 66 cm / 26 in
Weight 45 g / 1.6 oz
Specifics:
• Large model for use with HD slingshot
• Back swept wing and empennage
• Horizontal stab with anhedral
• Good gliding performance
• Easy to build
• Not too many parts
Name
Batsheva (or Bathsheba, Batseba, Betsabé, Basheva or Batyah) is a universal Hebrew feminine name as it is ancient, biblical and ultra-modern at the same time. Batsheva is usually connotated with resilience, beauty, loyalty and strength.
Literally it translates to “daughter of an oath” or “daughter of seven” as well.
The biblical Batsheva was first the wife of Uriah the Hittite and later the wife of King David. Her son became the successor of King David, King Solomon. More on her and her surroundings can be found in the Second Book of Samuel.
Among the more prominent modern figures by the name Batsheva are philanthropist and dance company founder B. de Rothschild, fashion designer B. Hay, social media influencer B. Haart, business and technology leader Bat Sheva Moshe.
General notes on beginner.zone slingshot/Slangbella models:
Be on the secure side. If the Balsa you intend to use for your fuselage is too soft or too light – reinforce it with an additional 12 mm / ½ in linen band glued along the whole fuselage on one side.
Fins should generally be cemented with acrylic glue on fuselages and hardwood “teeth” between fuselage and fin are one more option to ensure a durable and strong connection.
When you start your model, hold it with outstretched arms as far away from your eyes as possible!
Why not put on safety goggles when you fly your model as a rubber sling can store and release massive energy.
Help prevent preventable accidents.
Building the balsa sheet indoor glider Slangbella Tandem Batsheva HD
Materials
Fuselage: B 3; wings: B 1.5; wing supports: B 3 x 3; horizontal stab: B 1.5; horizontal stab supports: B 3 x 3; fin: B 1.5; fin base doublers: B1; two small pieces of hardwood 2 or 2.5; templates: B 5; piano wire 1.2 diameter; linen/cotton band width ½ in = 12 mm; ballast: piece of steel or lead.
Assembly
Cut out all balsa parts according to plan. Sand meticulously. If desired paint fuselage and/or wings now.
Fuselage.
Make cutouts for wing and empennage. Bend piano wire into hook form just as in plan. Carve out bed for hook on fuselage using a sharp knife and a round file. Insert hook and epoxy it. When dry use Balsa Putty to fill possible irregularities. Let dry. Sand area smoothly. Cement a sufficiently large piece of cotton or linen over the area. When dry turn fuselage on its other side and cement the B 1 doubler. When dry sand smoothly.
Wings.
Cement linen band along and around leading edge as shown on plan and let dry. Make a template from B 5 material to obtain best results, when joining the wing halves. Visual check for best possible symmetry. Let dry. Use linen/cotton band for reinforcing wing half joints on top and on bottom (photo).
Horizontal stab.
Cement linen band along and around leading edge as shown on plan and let dry. Make a template from B 5 material to obtain best results, when joining the horizontal stab halves. Visual check for best possible symmetry. Let dry. Use linen/cotton band for reinforcing horizontal stab half joints on top and on bottom (photo).
Fin.
Cement linen band along and around leading edge as shown on plan and let dry. Cement fin base doublers in place one after the other. Let dry.
Final assembly.
Make cutouts in fin and fuselage for hardwood pieces. Cement hardwood pieces into fin closely watching symmetry. When dry, cement fin on fuselage as in plan. Pay attention to symmetry – check from all sides. Put fuselage upside down on a so called „third hand“. Glue horizontal stab into its given position using pins to hold in place (photo). Remember to double check symmetry. When dry turn fuselage around and fix it again on “third hand” (photo). Repeat same procedure for wing. Let dry.
Balance at given C/G. Make first test glides over tall grass.
Να έχετε ευχάριστες πτήσεις! (Have pleasant flights!)
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