Deuces Wild 25e2 by E-Flite

7 Dec 13 - Update on new motors.

Deuces Wild 25e2 by E-Flite - 3/4 Front View Deuces Wild 25e2 by E-Flite - Side View Deuces Wild 25e2 by E-Flite - Front View

N of launches / Time 2 0 hrs 11 mins
Wingspan 62 in. 1570 mm
Wing Area 740 in 47.7 dm
  4S with 2x Turnigy SK4250-650 5S with 2x MVVS 8.0/680
Flying Weight 10 lb. 2 oz. 4.60 kg 10 lb 13 oz. 4.92 kg
Wing Loading 31.6 oz/ft 96.4 g/dm 33.8 oz/ft 103.1 g/dm
Wing Cube Loading 13.9 - Between Scale & Racer 14.9 - Between Scale & Racer
Motors 2 x Turnigy SK4250-650 brushless 2 x MVVS 8.0/680
Propellers Counter-rotating APC 12x8-E and APC 12x8-EP Counter-rotating APC 11x8-E and APC 11x8-EP
Speed Controller 2 x HobbyWing Platinum 60A Pro - 60A cont., 90A burst, 2-6S LiPo, Switch Mode BEC 5.25V or 6V @ 3A 2 x HobbyWing Platinum 60A Pro - 60A cont., 90A burst, 2-6S LiPo, Switch Mode BEC 5.25V or 6V @ 3A
Motor Batteries 2 x 4S Turnigy Nano-Tech LiPo 3300 cells 2 x 5S LiPo, usually Turnigy Nano-Tech 3850 mAh
Receiver JR RD921 - 9ch DSM2 - 2.4GHz - Internal and remote receivers - dual power input JR RD921 - 9ch DSM2 - 2.4GHz - Internal and remote receivers - dual power input
Servos Ailerons 2 x Hitec HS-81MG 2 x Hitec HS-81MG
Elevator Hitec HS-300BB Hitec HS-300BB
Rudder Hitec HS-300 Hitec HS-300
Flaps JR NES-517 JR NES-517
Nosewheel Hitec HS-101MG Hitec HS-101MG
Undercarriage Ripmax Diamond 200 Electric servoless
Static motor parameters 4S 3300mAh Turnigy Nano-Tech LiPo cells gave unknown RPM @ 15.5V with current draw of 28.9A (449W) per motor, which equates to 88W/lb. 5S 3850mAh Turnigy Nano-Tech LiPo cells give 10250 RPM @ 18.24V with current draw of 32.24A (595W) per motor, which equates to 110W/lb.
Flight performance Takes off amazingly quickly due to the large 'blown' area and climbs out really well.  Rolls are extremely axial and loops can be huge.  The top end speed is a little lower than I'd like so maybe I'll try it on 5S Takes off just as quickly and climbs out really well, just short of maintaining a vertical climb.  Rolls are extremely axial and loops can be huge.  The top end speed is certainly better now; I must try it with the speed logger fitted.

7 Dec 13 - I fitted the new motor a while ago and have now had a few flights; today with reduced diameter propellers to give a bit more ground clearance.  It flies as well as ever and the servoless electric retracts are much nicer in operation than the spring-air previously fitted.

7 Jul 13 - Had a motor fail today, with one winding burnt out and the other 2 sucked into the rotor/stator gap.  I was able to kill the throttle and land dead-stick but it's time for new (uprated) motors.

3 Jul 13 - Electric retracts fitted and main undercarriage leg doors fitted

23 Jun 13 - I've been having more problems with the spring-air retracts not extending and locking down on occasions.  I that fore decided that electric retracts are to be fitted instead.  I managed to find a set of retracts with the same mounting pattern, which will make fitting them simpler.  I've also got a set of oleo legs that are stiffer than the original wire legs; hopefully they'll cope on the roughish grass surfaces of our runways.  The nose leg is already swapped over but I need to shorten the oleo legs for the main gear; shouldn't take long once I've unburied the lathe.  A little reinforcing of the battery trays is also required as one became loose whilst removing a battery.

18 May 13 - Finally around to completing the model and undertaking the maiden flight; I'm really impressed with the performance.  There are still a couple of niggles to work out, e.g. sticky retracts, before it's finally sorted and handling properly assessed.  The top end speed is a little lower than I'd like so maybe I'll try it on 5S; I would try coarser pitched propellers but finding pusher variants is very tricky.

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