Bend the landing gear to the shape shown on the plans.  The main gear is installed in each nacelle by clamping it between the two 1/8th liteply rear nacelle formers.  The open design allows easy access to the gear and bolts. 

 

The rear 1/8th former is NOT glued into place.

 

Note the amount of sheeting on the bottom of the nacelle and the access hole under the gearbox for the gearbox mounting screw.

The picture above shows debris from flying off a wet slushy runway.

 

We made a simple balsa mount to hold the servos in the wing. Use CA to firm up the servo screw holes.

 

 

The nacelles are mounted to the wing using the two 1/8th dowells through the leading edge and a single 4/40 bolt through the 3/16th sheet blocks mounted in the wing and nacelle.

 

 

In this upside down view you can see formers F1 and F2 and the 1/16th balsa battery tray.

Note the scrap triangle stock in the corners at the dihedral joint.

The motor wires are shown running in front of the spar.  Servo wires behind.  Paper tubes could be run through the wing to make later removal of the servos easier.

The servos shown installed in my personal Gemini.  The receiver sits between the GWS servos.  The Sullivan mini cable at the top snakes along the right fuselage side to the nosewheel.

The steering pushrod exits the nose former and connects to a homemade servo arm consisting of a wheel collar and a portion of a metal clevis.  A z-bend makes the connection.

 

 

Above is the nose gear exiting the bottom of the nose block which, when covered, is simply attached to the fuselage with clear tape.

The pushrod cable runs up through the fin front and over the balsa fin top (this piece attached after the stab and fin are joined).  Cut a groove in this piece to bury the cable.  A z-bend was used in this installation and this necessitated the control horn being glued in place slightly off center.

The control horns were hand cut from 1/16th aircraft ply from the pattern shown on the plans and Ca'd into a tight 1/16th slot cut into the leading edge of each control surface. All control surfaces are installed with clear cellophane tape.

Our Gemini tracks straight on pavement and builds speed almost instantly.  A bit of up elevator eased in and it lifts off in a scale climb out of 30-40 degrees.  It's an easy gentle flyer that will roll and loop if pushed into it.  Those manoeuvres are not crisp however and the Gemini is most impressive when flown as a scale twin would be.

 

I notice a slight tendency to drop the left wing if hauled off to fast, but this is not a violent movement and is easily controlled.  It disappears if the plane is left on the ground until ready to fly.

 

The CG on mine is located just ahead of the spar. The elevator throw is one half inch up and down and the ailersons 3/8th inch in both directions.  This is more than enough and full throw is seldom used.

 

Landings are straightforward and the Gemini slows down very quickly.  I use some throttle right down on the to the runway.  If you pull all power off the sink rate increases quite a bit and results in a bumpy landing.  There is no tendency to stall but the Gemini definitely likes some power on right to the deck.

 

A full throttle both motors are pulling about 12 amps.  With eight 1100 mah HECELLS the pane flies easily and at a nice speed on half throttle.  Full throttle is only necessary for takeoffs and steep climbing.  I get 7 minutes of flight at the half throttle position.  I generall shoot a lot of touch and goes and this is neat on pavement.  Carring some power you can touch down and run along with the nose a bit high for a few feet before lifing off again for another circuit.  Flight time suffers a bit with the repeated full throttle, dropping to about six minutes.

 

I have another 8 cell HECELL pack rated at 1800 mah and this gives me similar flying charasteristics for eleven minutes.  The extra weight is not at all noticeable.

 

With the 1100 cells the finished weight is 24 ounces.

 

 

Small sections of triangle stock are glued to the stab/fin joint to provide a larger gluing surface.  Use 1/4 or 3/16th triangle stock.