Build Comments and Variations from the supplied equipment:
The radio system employed here is Spektrum.
Servos in General
Stabiliser and Elevators:
Undercarriage: (Bear in mind here that our local field has a grass runway......)
Under the Canopy:
Apart from some transportation damage to the canopy, cowel and fasteners, the plane was nicely manufactured. The film covering could have used a little more care. The decals went on quite satisfactorily.
As at 10-June-2017, not yet flown.....
Source: Hobby King
Aluminium-backed with draw holes in the nose to encourage air flow through the spinner and onto the motor. Painted carnival yellow to match the plane.
Source: RC World
Perfect size for our application according to eCalc - see above.
Model: Turnigy Rotomax 1.40
Max Power: 2775W
Shaft Diameter: 8mm
As per the eCalc results, this motor will provide an easy 585watts per kg for this application.
Careful, the ESC must be capable of 28 pole control.
Model: Turnigy K-Force 120Amp Opto.
This is a 28pole capable ESC, necessary to drive the Rotomax.
See also the programming card below.
Model: XT90S with Spark Arrestor
Half connection has 6ohm resistor in series so there is no spark as the ESC capacitors load up. Nice soldered connection covers makes for a nice result.
Two of these in series making up a power pack of 10S 5000 30C capable of producing 2700watts.
Technical images above show the straps in operation. Two are required to properly hold down 2 x 5S batteries.
This SBEC accepts up to 26 volts input and up to 6v output. It is connected acros one of the 5S batteries and is activated during the main battery pluggin. 6v Is output to the Servo Section Board.
Model: Mini Servo Section Board
Feature: 30A capable.
For this application:
- 6 Volts input from SBEC.
- 6 Volts direct output to servos.
- On board UBEC feeds steady 5.5v to the Rx.
- Rx signal lines only feed on to the servos.
Model: Spektrum AR-6260
Especially designed for difficult fuselage applications, the long antennae provide for good reception coverage.
This sits inside the Servo Section Board and is well fastened to it.
Model: Hitec HS-5495BH
Used all around, this Karbonite geared servo will produce a stall torque of 6.4kg.cm at the intended 6v power supply. As shown in the technical section, this servo seems quite capable of doing the job here.
Model: Dubro Low Bounce 3.5"
These are soft tyres suitable for a grass runway. Although they are a little larger than those supplied, they still fit snuggly inside the spats.
This card is suited to programming the K-Force 120A ESC.
Ideal for caring for the wings. Includes extra pouches and a pocket for the joining tube.