Paritech ASH 31 Mi Manual
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Paritech ASH 31 Mi Manual

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Paritech ASH 31 Mi - Build Log
Contents
2014-05-30 Placing the order .................................................................................................................. 2
2014-09-25 Unpacking ............................................................................................................................ 5
2014-09-27 Servo connectors between inner wings and fuselage ......................................................... 9
2014-10-05 Installation of supports inside fuselage ............................................................................. 14
2014-10-11 Wheel brake and tow release servo .................................................................................. 17
2014-10-12 Outer wings servo connectors ........................................................................................... 19
2014-10-18 Wings servos ...................................................................................................................... 20
2014-10-25 Elevator servo and cable routing inside fuselage .............................................................. 22
2014-10-29 Radio setup & servo travel adjustments ............................................................................ 28
2014-11-13 Receiver and motor battery connectors and installation .................................................. 33
2014-11-15 Attaching decals ................................................................................................................. 34
2014-11-16 Center of gravity and lateral balancing .............................................................................. 37
Author: Per Takman
E-mail: per.takman@gmail.com

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Summary of Contents for Paritech ASH 31 Mi

  • Page 1: Table Of Contents

    Paritech ASH 31 Mi – Build Log Contents 2014-05-30 Placing the order ........................2 2014-09-25 Unpacking ..........................5 2014-09-27 Servo connectors between inner wings and fuselage ............9 2014-10-05 Installation of supports inside fuselage ................14 2014-10-11 Wheel brake and tow release servo .................. 17 2014-10-12 Outer wings servo connectors ...................

  • Page 2: 2014-05-30 Placing The Order

    After a long period of window shopping and planning of this project I finally pulled the trigger and placed an order for a “no expense spared” ASH 31 Mi. Having seen how well Paritech assemble their gliders I could not resist letting them assembling retracts, canopy, cockpit, AFT19XS, spoilers and rudder.
  • Page 3 Revision 1 Table 2 below summarize my order from Paritech and contain some of the accessories installed. Paritech part number Description 21000 ASH 31 Bausatz /ASH 31 Kit with wing bags Im Bausatz enthalten: -> Alle GfK- Teile, montagefertig, RAL 9003 ->...
  • Page 4 Castle Creations Phoenix Edge 120 HV + Castle Link Quick Connect 2x Motor batteries Thunder Power TP5000-5SPF70 2x RX batteries A123 6.6V 2500 mAh Futaba T18MZ Table 2. Summary of my order from Paritech and the additional components I've ordered.

  • Page 5: 2014-09-25 Unpacking

    Luckily, I could not find any shipping damages and after having assembled the glider in my living room I started to realize the size of this puppy. The images below show what parts of the build that I’ve let Paritech take care of.
  • Page 6 Revision 1 Figure 4. Top view from the left. Figure 7. Front view of canopy. Figure 5. Canopy close up. Figure 8. Scale cockpit from Axel Pfannmüller. Figure 6. Close up of sliding window.
  • Page 7 Revision 1 Figure 12. Joystick and seat detail. Figure 9. Seat with harness. Figure 13. Flap mechanism lever. Figure 10. Map pocket and microphone. Figure 14. Decals inside cockpit. Figure 11. Retract mechanism lever.
  • Page 8 Revision 1 Figure 15. Fin and stabilizer. Figure 18. Retract and wheel brake from inside. Figure 16. Retract from FEMA. http://www.fema-modelltechnik.de Figure 19. AFT19XS Turbo from Florian Schambeck. http://www.klapptriebwerk.de/ Figure 17. Rudder with linkage.

  • Page 9: 2014-09-27 Servo Connectors Between Inner Wings And Fuselage

    I made these out of plywood and later painted them white so that they blend into the wing. The 9-pin d-sub comes with the wiring harness from PowerBox Systems that Paritech offer. The short connector frames from Lindinger (http://shop.lindinger.at/product_info.php?products_id=54857) do a great job securing the multiplex connectors to the wing and fuselage.
  • Page 10 Revision 1 Figure 22. Top view showing the angle with respect to the wing joiner. In order to accurately transfer the location of the connectors from the wings to the fuselage I created templates from balsa. The wing joiner and together with the positioning pins provide accuracy and repeatability.
  • Page 11 Revision 1 Next, the hole pattern was transferred to the fuselage… Figure 24. Image taken from the inside of the fuselage with the wing mounted including servo connectors. and the inside surface was sanded to ensure a good bond with the epoxy. Figure 25.
  • Page 12 Revision 1 The servo-connector support was glued to the inside of the fuselage… Figure 27. Servo-connector support from inside fuselage. and epoxy mixed with fiberglass flock was used to strengthen the joint. Figure 28. Servo-connector support glued into position with epoxy mixed with fiberglass flock to strengthen the joint. The fuselage servo-connector supports were painted black to allow them to blend into the cutouts.
  • Page 13 Revision 1 Figure 30. Finished inner-wing section with servo connectors. The inner wing connectors now fit snuggly together with the fuselage and servo-connector.

  • Page 14: 2014-10-05 Installation Of Supports Inside Fuselage

    Revision 1 2014-10-05 Installation of supports inside fuselage Today I’ve been working on the support for the PowerBox Champion SRS system, the rudder servo holder, the Castle Creations ESC and the battery holder for the AFT19XS. The supports were fabricated by using cardboard to create templates that takes the curvature of the fuselage into account.
  • Page 15 Revision 1 The PowerBox Champion SRS (http://www.powerbox-systems.com/produkte/powerbox- systeme/powerbox-champion-srs.html) provide dual receiver inputs using S.Bus, dual receiver batteries and built in servo synchronization, which I will utilize for the dual aileron servos. Figure 33. PowerBox Champion SRS mounted on the support. Table 3 shows the channel assignment for the PowerBox Champion SRS.
  • Page 16 Similarly, a support for the motor batteries was fabricated along with a rudder servo holder and ribs for the ESC. Figure 34. Motor batteries test fitted on top of battery tray, rudder servo (HS-5645MG) in servo frame from Paritech and the Castle Creations Phoenix Edge HV 120 mounted to its support ribs.

  • Page 17: 2014-10-11 Wheel Brake And Tow Release Servo

    Revision 1 2014-10-11 Wheel brake and tow release servo Today I’ve mounted the wheel brake servo as well as the tow release servo. For the wheel brake servo (HS-5125MG) I’ve used a servo frame from http://www.servorahmen.de/. The heat shrink around the linkage provide a smooth surface to prevent snags on the aluminum edge.
  • Page 18 Revision 1 The tow release servo (HS-5645MG) is held in place by a servo frame from Paritech. The pushrod is a M3 threaded rod with a 5 mm carbon support to strengthen the pushrod. Although not visible in the image I glued two hull shaped plywood ribs to the servo frame to ensure a good glue joint.

  • Page 19: 2014-10-12 Outer Wings Servo Connectors

    Revision 1 2014-10-12 Outer wings servo connectors Fitting the outer wing panel connectors is a rather tedious job and it is not really practical to use the multiplex connector frames. However, by carefully milling out just enough to allow the connectors to be glued in position accurately it was possible to get a snug fit.

  • Page 20: 2014-10-18 Wings Servos

    Today it was time to mount the servos in the wings. One of the spoilers gave me some headache since it was not operating smooth enough, but after some adjustments it now seems to work well. All wing servos are held in place using the servo frames supplied by Paritech. Figure 40. Spoiler servo HS-225MG.
  • Page 21 Revision 1 Figure 42. Outer wing panels with HS-5125MG servos. The servos are synchronized using the PowerBox Champion. Servo synchronization was simple using the servo tester to determine where the center and limits were located in µs. The same servo tester was later used to measure the pulse widths from the PowerBox Champion to ensure the servos were perfectly synchronized.

  • Page 22: 2014-10-25 Elevator Servo And Cable Routing Inside Fuselage

    Revision 1 2014-10-25 Elevator servo and cable routing inside fuselage Today I’ve installed the elevator servo (HS-7955TG) and finished the cable routing inside the fuselage. The elevator pushrod is made from a M3 threaded rod with a 5 mm carbon support to strengthen the pushrod.
  • Page 23 Revision 1 The cables running from the wing connectors have been collected in braided sleeves with heat shrink on the ends. All cables have been strapped to the walls using cable fasteners glued to the fuselage. Figure 45. Cable routing for from the wings to the PowerBox Champion SRS. Figure 46.
  • Page 24 Revision 1 The sequencer from Florian Schambeck is attached to the fuselage wall using Velcro. The Castle Creations Quick Connect allows for simple connection to the data logger of the Phoenix Edge 120 HV. Figure 47. Sequencer for the AFT19XS and Castle Creations Quick Connect. The motor battery voltage is monitored using the S.Bus2 compatible receiver.
  • Page 25 Revision 1 Figure 49. Primary receiver location with telemetry input from the Powerbox and the voltage sensor. Figure 50. Secondary receiver location next to the landing gear on the left side of the fuselage.
  • Page 26 Revision 1 Figure 51. Mounting location of the Picolario system. Figure 52. Battery tray with Velcro fasteners to secure the motor batteries.
  • Page 27 Revision 1 Figure 53. Fuselage electronics layout seen from above.

  • Page 28: 2014-10-29 Radio Setup & Servo Travel Adjustments

    Revision 1 2014-10-29 Radio setup & servo travel adjustments Today it was time to setup and adjust the radio for servo limits as well as flight mode deflections. Table 4 outlines the function assignment I use with my Futaba 18MZ. See Figure 54 for layout of Futaba 18MZ controls.
  • Page 29 Revision 1 Figure 54. Layout of the Futaba 18MZ controls.
  • Page 30 Revision 1 Using straight extension cables to fold the wings allow for easy measurement of the surface deflections from above. Figure 57 show the extension cable for the ailerons which also allow listening using the HFP-25. The display for the PowerBox Champion is necessary during programming, but I’ve decided not to install it since it does not really add value during flight.
  • Page 31 Revision 1 Figure 56. Close up of extension cables. The extension cable for the outer wing panels allow both sensing the receiver output and connecting to the aileron servos. This is very useful when synchronizing the dual aileron servos using the HFP-25. Figure 57.
  • Page 32 Revision 1 Table 5 show servo travel limits for the different flight conditions. I always use Cruise, Speed, Thermal, Launch & Landing flight conditions. These settings are based on recommendations from Paritech. Elevator [mm] Camber Down Thermal Speed Launch Land Up Down...

  • Page 33: 2014-11-13 Receiver And Motor Battery Connectors And Installation

    Revision 1 2014-11-13 Receiver and motor battery connectors and installation I’ve now received the receiver batteries (A123 pack 6.6v 2500mAh) from Emcotec as well as the 2x Thunder Power G8 Pro 5S1P 5000 mAh batteries for the motor. I’ve also finished soldering all the battery connectors and extension cables.

  • Page 34: 2014-11-15 Attaching Decals

    Revision 1 2014-11-15 Attaching decals After carefully polishing all parts with auto polish (no wax) it was time to attach the custom vinyl decals. Before attaching the decals I used isopropanol locally to assure good adhesion of the decals. I use a technique where a very small amount of dishwasher detergent is mixed with water. This is then poured into a spray bottle and a thin layer of spray is applied to both the surface of the plane and the decal before laying it down.
  • Page 35 Revision 1 Figure 62. Fin decals with the Swedish flag on top. Figure 63. Fuselage cockpit decal.
  • Page 36 Revision 1 Figure 64. Guess the name of the pilot! Figure 65. Solar panel for AFT19XS covers.

  • Page 37: 2014-11-16 Center Of Gravity And Lateral Balancing

    Revision 1 2014-11-16 Center of gravity and lateral balancing It is time to bring some balance into the life of this glider. My CG stand from Great Planes did a great job although it was pushed to its limits. Even the guy on our TV could not help himself staring at this beauty! Figure 66.
  • Page 38 Revision 1 Figure 67. Recommended CG is located 90 mm from leading edge. By adding 70 g in front of the tow release servo together with 568 below the motor battery compartment the plane was in perfect balance. An additional 21 g in the left wing tip was required to balance the model laterally.
  • Page 39 Table 7. Specifications and weight of individual parts. The decalage of the stabilizer was measured to 2.2°, which was more than expected. I may decide to reduce this after a few flights with dive tests, but Paritech really recommend these factory settings based on extensive testing.
  • Page 40 Revision 1 The last step of the build process was to add a protective layer of car wax before the test flight which is scheduled for spring 2015. I’m planning to install a TEK-probe and a Picolario2 Duo and I may get a pilot doll eventually, but I will probably maiden the glider without these.

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