MULTIPLEX Mini Mag User Manual

Kit MiniMag # 21 4211

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Bauanleitung 3-11 Notice de construction 12-20 Building instructions 21-37 Instruzioni di montaggio 38-46 Instrucciones de montaje 47-55

# 21 4211

Examine your kit carefully!

MULTIPLEX model kits are subject to constant quality checks throughout the production process, and we sincerely hope that you are happy with the contents of your kit. However, we would ask you to check all the parts before you start construction, as we cannot exchange components which you have already worked on. If you find any part is not acceptable for any reason, we will readily correct or exchange it. Just send the component to our Model Department. Please be sure to include a brief description of the fault. We are constantly working on improving our models, and for this reason we must reserve the right to change the kit contents in terms of shape or dimensions of parts, technology, materials and fittings, without prior notification. Please understand that we cannot entertain claims against us if the kit contents do not agree in every respect with the instructions and the illustrations.

Caution! Radio-controlled models, and especially model aircraft, are by no means playthings. Building and operating them safely requires a certain level of technical competence and manual skill, together with discipline and a responsible attitude at the flying field. Errors and carelessness in building and flying the model can result in serious personal injury and damage to property. Since we, as manufacturers, have no control over the construction, maintenance and operation of our products, we are obliged to take this opportunity to point out these hazards, and to emphasise your personal responsibility.

Additional items required for the Mini Mag: Adhesive and activator Use medium-viscosity cyano-acrylate adhesive (“medium cyano”) in conjunction with activator

(“kicker”). Do not use styrofoam cyano. Epoxy glues appear to produce strong joints, but the strength is only superficial and the hard adhesive tends to break away from the components under stress. Hot-melt glue can also be used.

MULTIPLEX radio control equipment for the Mini Mag:

PiCO 5/6 UNI receiver 35 MHz A Order No. 5 5920 alternatively: 40 MHz Order No. 5 5921

or: Micro IPD UNI receiver 35 MHz A Order No. 5 5971

alternatively: 40 MHz Order No. 5 5972 Nano S UNI or HS 55 servo (2 x required) Elevator / rudder Order No. 6 5120

and (optional):

Nano S UNI or HS 55 servo (2 x required) Ailerons Order No. 6 5120 300 mm UNI extension lead Aileron servos, 2 x Order No. 8 5031 if necessary: 200 mm UNI separation filter cable Aileron servos, 2 x Order No. 8 5035

MagicMixer #1 for 3-channel transmitter without mixers Order No. 7 3000 Y-lead (UNI) for 4-channel transmitter with separate rudder control Order No. 8 5030

MULTIcont X-16 UNI Speed controller Order No. 7 2271

MULTIPLEX Permabatt NiMH flight battery (AA cells) 7 / 1500 mAh Order No. 15 6030 or MULTIPLEX Permabatt NiMH flight battery (AA cells) 8 / 1500 mAh Order No. 15 6037 or MULTIPLEX Li-Batt (Li-Po) flight battery P-CS 2 / 1-2000 mAh Order No. 15 7016 or MULTIPLEX Li-Batt (Li-Po) flight battery SH BX 2 / 1-2100 mAh Order No. 15 7130

Battery charger:

MULTIcharger LN-5014 DC (charge current 100 mA … 5 A) 1 - 14 NiCd/ NiMH Order No. 9 2531

and 1 - 5 Li-Po cells

Optional:

Float set Order No. 73 3069

Tuning 1: Easy Glider power set (3:1 gearbox and Permax 400) Order No. 33 2688

plus 3.5 mm Ø propeller driver Order No. 33 2310

and 8 x 3.8” propeller Order No. 73 3139

Tuning 2: Powerset „sport“ BL 22/18

Contents: motor, propeller driver, speed controller, propeller Order No. 33 2627

Tools:

Scissors, balsa knife, combination pliers, cross-point / slot-head screwdrivers for servo output arm screws and motor screws, soldering iron.

Note: please separate the illustrated pages from the centre of this booklet.

Specification:

Wingspan 1010 mm Fuselage length overall 820 mm All-up weight min. 580 g Wing loading (FAI) min. 26 g/dm² Power system min. Permax 400 6V RC functions Elevator, rudder and throttle; optional ailerons

Important note This model is not made of styrofoam™! It is not possible to glue the material using white glue or epoxy. Please be sure to use cyano-acrylate glue exclusively, preferably in conjunction with cyano activator (“kicker”). For all joints use medium-viscosity cyano-acrylate (“cyano”). When gluing Elapor® always use this procedure: spray one surface with activator, allow it to air-dry, then apply cyano to the other side. Join the parts and position them accurately immediately.

Please take care when working with cyano adhesives. These materials harden in seconds, so do not allow them to get onto your fingers or other parts of your body. It is important to wear goggles to protect your eyes. Keep the adhesive out of the reach of children.

1. Before starting construction

Please check that the contents of your kit are complete. You will find Figs. 01 + 02 and the Parts List helpful for this.

2. Preparing the control snakes

Check the length of the elevator snake tubes 43 and 45 and shorten them if necessary.

43 3 / 2 Ø x 275 mm 45 2 / 1 Ø x 300 mm

Steel 41 0.8 Ø x 355 mm Repeat the procedure with the rudder snake tubes 44 and

46.

44 3 / 2 Ø x 225 mm 46 2 / 1 Ø x 275 mm

Steel 42 0.8 Ø x 325 mmplease insert!

3. Installing the snakes in the fuselage shells Caution: it is important to glue the snake outer sleeves 43

and 44 to the fuselage shells over their full length, as this increases the strength of the tail boom considerably. Check that the control snakes work smoothly, and be careful not to allow any glue to run inside the outer sleeves.

4. Left-hand fuselage shell:

Trim the shell using a balsa knife, as shown in Fig. 03.

Position the snake outer sleeve 43 in the front of the fuselage shell, as shown in Fig. 05. Lay the shell down flat, and glue the outer sleeve 43 to the external channel over its full length, using cyano.

output lever. Slip the inner tube 45 over the steel pushrod, and slide both into the outer sleeve 43 from the servo end.

Fig. 05

Fit the servo in the left-hand fuselage shell from the side as shown. If you wish to use different servos, it may be necessary to make minor adjustments here. Tape the servo lead in the fuselage, so that it does not get in the way when gluing the fuselage shells together. Glue the servo to the fuselage with a drop of hot-melt glue at each mounting lug. Fig. 05

Glue together the wing bolt support components 33 / 34. If finger power is not sufficient, press them together using combination pliers, then glue the assembly in the fuselage shell.

Place the latch clip 22 for the Canopy-Lock canopy retainer in the fuselage in such a way that the latch lug 23 fits between the clip 22 and the fuselage side: spray activator in the recess in the fuselage and allow it to air-dry. Now apply cyano to the joint surfaces of the latch clip and position it immediately. Apply more glue to reinforce the joint if necessary. Fig. 07

5. Option

If you wish, you can fit a tailwheel to your model. This is actually necessary if you intend to fit floats at a later date, as a water rudder is absolutely essential for this version, and this uses the installed tailwheel wire. Figs. 09 - 13 show the procedure. You will find a bending template in Figs. 12 + 12a. The steel wire should be 1.3 mm Ø. The tube required is the remainder of part 44. Cut the water rudder to shape from 3 mm Depron, and fix it inside the steel wire frame using adhesive tape. Cut a V-notch in both fuselage shells to accept the wire, as shown in Fig. 10, and pierce a hole in the tailplane for it; Fig. 11. If you fit the tailwheel, the integral foam tailskid on the fuselage should be cut off. Cut a slot in the rudder for the driver wire; Fig. 10.

6. Right-hand fuselage shell:

Trim the shell using a balsa knife, as shown in Fig. 04.

Position the snake outer sleeve 44 in the front of the fuselage shell, as shown in Fig. 06. Lay the shell down flat, and glue the outer sleeve 44 to the outer channel over its full length, using cyano.

Installing the servo Set the servo to neutral (centre) from the transmitter, and fit the output arm on the output shaft at 90° to the servo case. Connect the pre-formed end of the steel rudder pushrod to the innermost hole of the servo output lever. Slip the inner tube 46 over the steel pushrod, and slide both into the outer sleeve 44 from the servo end. Fig. 06

Glue the canopy latch clip in place; Fig. 08

7. Joining the fuselage shells

Start with the right-hand fuselage shell 4. We recommend medium or thick cyano for this stage. The fuselage shells 3 and 4 can now be glued together.

Check that the parts fit together snugly, and carry out any minor trimming required before reaching for the glue bottle. Glue the wing bolt support assembly 33 / 34 in one fuselage shell. Apply a thin coating of activator to the fuselage shell 4 and allow it to air-dry, then apply thick cyano to the mating surfaces of the fuselage shell 3. Now join parts 3 and 4 carefully and align them quickly. The fuselage joint line must be straight, i.e. it must not be curved!

Figs. 14 - 15

8. Installing the undercarriage support

Fit the undercarriage support 74 on the underside of the fuselage “dry” (no glue), and press the spikes into the fuselage material. Remove the support, then carefully apply cyano to the joint surface on the fuselage, not forgetting the pierced holes. Apply activator thinly to the undercarriage support, and press it firmly into place. Fig. 16

Fit the canopy on the fuselage again, and check that it fits neatly. Fig. 23

13. Attaching the horn to the elevator

Fit the pushrod connector 25 in the outermost hole of the elevator horn 24, and secure it with the washer 26 and nut

27. Fig. 24

Caution: note the side on which the connector is fitted!

Tighten the nut gently until the connector swivels smoothly, but without slop, then apply a tiny drop of cyano to the outside of the nut on the point of a pin. Fit the socket-head grubscrew 28 in the pushrod connector 25 using the allen key 29; do not tighten it at this point. Apply activator to the recess in the elevator, and glue the prepared horn 24 in it, with the row of holes facing the hinge line. Fig. 26

9. Preparing the motor installation

You now have to decide which power system you want to install:

1. Standard - Permax 400, direct drive 5 x 4” Guenter or MPX propeller

Included in the kit Fig. 17

2. Standard G Permax 400 with 3:1 gearbox

Fig. 20

Easy Glider E power set (Permax 400 with 3:1 gearbox) # 33 2688 plus 3.5 mm Ø propeller driver # 33 2310 and 8 x 3.8” propeller # 73 3139

3. “Sport” power set: BL-X 22-18 # 33 2627 The set includes the propeller driver and propeller

Attach the motor 50 to the motor mount 60 + 61. If you are using the geared motor, cut down the motor mount 61 to a length of 25 mm. Fig. 20

10. Connecting the motor

Carry out a test-run! The propeller must always rotate anticlockwise when viewed from the front. Reverse the motor terminal connections if the motor spins in the wrong direction.

11. Installing the motor

Dry-fit the motor assembly (no glue): Figs. 19 and 21; carry out any minor adjustments required. Apply CA to the whole surface of the motor mount and carefully fit the assembly in the fuselage. Fig. 18

12. Installing the canopy latch lugs in the canopy

The canopy latch lugs 23 are fitted in the canopy 5 as a mirror-image pair, i.e. with the lugs facing inward. Apply CA to the ridged areas - in this case activator should not be used - then push the lugs into the slots in the canopy. Fit the canopy on the model, and allow the latch lugs to engage in the latch clips 22. Immediately position the canopy accurately. Allow the glue to harden for about one minute, then carefully open the canopy again. Apply activator to the joint areas between the latch lugs and the canopy.

Fig. 22

14. Attaching the horn to the rudder

Fit the pushrod connector 25 in the outermost hole of the rudder horn 24, and secure it with the washer 26 and nut

27. Fig. 26

Caution: note the side on which the connector is fitted!

Tighten the nut gently until the connector swivels smoothly, but without slop, then apply a tiny drop of cyano to the outside of the nut on the point of a pin. Fit the socket-head grubscrew 28 in the pushrod connector 25 using the allen key 29; do not tighten it at this point. Apply activator to the recess in the rudder, and glue the prepared horn 24 in it, with the row of holes facing the hinge line. Fig. 26

15. Freeing the elevator and rudder

Work the rudder and elevator to and fro repeatedly to free up the hinges; they will eventually move relatively easily. Take care not to separate the control surfaces! Figs. 25 +

16. Gluing the tail surfaces to the fuselage

Position the tailplane 7 on the fuselage “dry” (no glue) and check that it fits correctly. Ensure in particular that it is parallel to the wing saddle, and that there is no gap between the tailplane and its mount. You can check this by laying one of the spar tubes 40 on the wing saddle (e.g. secure it with masking tape). Now sight over the spar from the fuselage nose and check that the tailplane is parallel to it. When you are confident that the tailplane can be aligned correctly, glue it to the fuselage. Check that alignment is correct and there are no gaps, then leave the glue to cure. Place the fin 8 on the fuselage and tailplane “dry”, and check it for fit. It is important here that the fin is a snug fit, and is at 90° to the wing saddle and the tailplane; use a setsquare or similar tool to check this.

Fig. 30

17. Retaining the elevator and rudder pushrods

Fit the front end of the steel pushrods 41 and 42 through the pushrod connectors 25, set the servos and control surfaces to neutral (centre) and tighten the socket-head grubscrews 28. You may find it necessary to bend the pushrods slightly to obtain correct alignment.

Figs. 31 - 32

18. Installing the undercarriage

Fit the wheels 71 on the main undercarriage unit 70, using two collets 72 to retain each one. Fig. 33. Squeeze the undercarriage together gently, push it into the support 74 and allow it to snap into place. Fig. 34

Completing the wings

19. Installing the spar

Fit the spar tubes 40 in the spar joiner 31, secure them with glue and trial-fit them in the wing. Apply cyano to the spar channel in the wing, then push the spars and the spar joiner quickly into place. Set the wing straight before the adhesive has a chance to cure. Sight along the wings from each tip to check for unwanted warps.

Fig. 35

smoothly, but without slop, then apply a tiny drop of cyano to the outside of the nuts on the point of a pin. Fit the socket-head grubscrews 28 in the pushrod connectors 25 using the allen key 29; do not tighten them at this point. Apply activator to the recesses in the ailerons and glue the horns 24 in them with the row of holes facing the hinge line.

Fig. 38

24. Installing the aileron pushrods

Connect the pre-formed end of the steel pushrods 30 to the innermost hole of the servo output arm, and fit the plain end through the pushrod connector 25 on the aileron horn. Set the aileron and servo to neutral (centre), and tighten the grubscrew 28 to secure the pushrod.

Fig. 39

Optional ailerons

If you wish to fly the model in rudder / elevator form, simply skip points 19 - 22. The servo wells can be sealed (later) using the decals provided.

With the standard dihedral the model flies very well with rudder or ailerons as the primary turning control. It is also possible to fit ailerons to the wing at any time.

If you wish to fly the model with ailerons (“full-house” control), resume construction at this point:

20. Freeing the ailerons, installing the aileron servos

Cut a slot at both ends of the ailerons, which are attached to the wing 6. Work the ailerons to and fro repeatedly to free up the hinges; they will eventually move relatively easily. Take care not to separate the control surfaces!

Fig. 36

21. Installing the aileron servos

Set the servos to neutral from the transmitter. Fit the output arms on the servos so that the arms are at 90° to the servo case - 1 x left, 1 x right. Check that the servos fit snugly in the recesses in the wings 6. You may need to make minor adjustments to suit the servo type you are using. Apply a drop of hot-melt glue to the slots in the wing for the servo mountings lugs, and press the servos into the recess immediately. Apply another drop of glue if necessary.

Fig. 37

22. Deploying the aileron servo leads

Deploy the servo leads along the wing towards the centre section. The lead must fit in the front edge of the spar channel and run perfectly straight, standing “on edge”. The leads should project by about 120 mm at the wing root, so that you can comfortably connect the plugs to the receiver when the model is assembled. You may need to extend the standard servo leads. Secure the leads at the centre of the wings with a drop of hot-melt glue.

23. Attaching the aileron horns

Fit the pushrod connectors 25 in the outermost hole of the aileron horns 24. Secure the connectors using the washers 26 and nuts 27. Caution: make a handed pair: 1 x left, 1 x right. Tighten the nuts gently until the connectors swivel

25. Attach the wing to the fuselage using the screw 32. Fig. 40

26. Installing the radio control system components

The next step is to install the remaining radio components and the flight battery in the cabin area. Keep one eye on the recommended Centre of Gravity position when positioning these items; see Fig. 43. You can correct the CG position by adjusting the location of the flight battery.

Pieces of Velcro tape 20 + 21 are supplied in the kit for securing these components. Please note that the adhesive on the tape is not very strong, and we recommend that you stick the tape in the fuselage with cyano for additional security.

Fit the receiver behind the wing screw, standing upright. Run the aerial wire out of the fuselage and tape it in place. The speed controller should be positioned immediately aft of the motor.

The motor supplied in the kit features internal suppressors, and these are adequate if you are using a MULTIcont X-16 speed controller, # 7 2271.

If you prefer to use a different controller, it is in your own interests to fit additional suppression measures to the electric motor. A suitable suppressor set is available under # 8 5020. Solder one 47 nF capacitor between one motor terminal and the motor can, and a second one between the other terminal and the can. The third 47 nF capacitor should be soldered across the terminals to form a bridge.

Installing the propeller

The next step is the initial test-run of the motor, but first the propeller must be fitted. The procedure for this varies according to the power system you have installed. However, please be sure it is firmly located in every case. In the standard version the spinner and propeller should be secured with a drop of adhesive and glued to the motor shaft. Use 5-minute epoxy with a Guenter propeller, and cyano with an MPX prop.

Once the wiring is complete, you are ready to carry out the first test-run.

# 21 4211

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