MS Composit SWIFT MAXI User manual

1
SWIFT MAXI
Stavební návod
Assembly Instructions
Technical data
Wingspan: 1380 mm
Total weight: 900-1200 g
Wing surface: 56 dm2
Motor: EM 400/ EM 540
Power source: 3S Li-Pol 2400 / 3S2P Li-Pol 2400
Controlled functions: Elevator, Aileron, Throttle,
Elevonmixneeded

6
Accessories
RC equipment
Transmitter – three channels transmitter needed (at least). The transmitter must provide the delta mixing
function for elevons.
Recommended servo – 15-20 g, for example MS9380, Hitec HS81
Receiver – choose one of the small ones, for example MS-002 or MS-003.
Power source – recommended are for motor EM 400 – 3x Li-pol 2400 mAh, for motor EM 540 – 3S2P Li-pol
2400 mAh
Speed controller –brushless speedcontroller for recomended motor (EM 400 or EM 540) .
Materials and tools needed for SWIFT assembly:
Epoxy or Standard CA bond medium thickness, and corresponding CA activator
Self adhesive tape with glass fiber reinforcement (manufactured for example by 3M), 25mm width.
Terms used
Negative dihedral. Upside down V dihedral.
Elevon. Steering element fulfills aileron and elevator function. Used on delta planes.
Assembly steps
RC set up. Switch on the transmitter, set up the proper mix for delta planes, set trims to neutral position. Put
simple horns on the servos, the horns are perpendicular to the lower wing surface. Make a cut in the wing to
place antenna in, if the antenna is longer, than the half of the wing, make the cut in zigzag manner.
Wing assembly. Apply medium thick CA bond on one wing root section, and spray some CA activator on the
other one. (You can use epoxy instead of CA as well.) Put the wing halves on a flat surface, and press the
trailing edges towards the surface (see Pic. 1) Press the both wings roots together and wait until the glue hardens.
If you follow the described process, the wing will have the proper negative dihedral. Advice: put a plastic foil
between the wing and the surface to prevent the wing sticking to it.

7
Power unit instalation:
Power unit is delivered separately with two
follow options:
1. EM 400 – recommended with 3xLi-
pol 2400 mAh , propeller 9x4.7, max
load current around 17A
2. EM 540 – recomended with 3S2P Li-
pol 2400 mAh, propeller 10x4.7, max
load current around 28 A
Before gluing of the motor bed, check correct
placement on the wing by putting the motor in
it's position - the tips of the prop have to pass
the edges ot the wing in distance 3mm. Mark
the position of the reducer, take it off and using CA glue, fix the motor bed onto the top center side of the wing.
Before gluing, coarsen the surface of the motor bed.
Steering elevon horn. Put the horn on the
elevons in such a manner, see picture on right
side, and the hole for the pushrod is in
perpendicular position over the elevon axis of
rotation. Cut holes for servos as see picture on
right side.
Rudder assembly. Glue the rudders to the end of the
wing using the CA bond, similarly as you fixed the wing
halves together.
Stiffening by glass fiber tape. The best is to use 25 mm tape,
on places where you need slimmer, simply tear it parallel to the
fiber. At first reinforce the leading and trailing edges, and put
on the “main beam”

8
Reducer Assembly:
Put the motor on the motor bed, and screw it with two
M3 screws – motor is mounted in oposite position.
For mount of prop use set for push prop - oposite
mount.
Pushrods. Use the enclosed string to make the
pushrods. Set up the pushrod length so the elevon is
elevated for 3-5 mm in neutral servo position! This is
measured from the bottom wing surface to the trailing
elevon edge. Use Z joints to attach the pushrod to the
horns. The ratio of servo and elevon horn length is
1:1 (recommended). Attention – the elevon rotates on
upper wing surface! It might be needed to cut a dent
in the wing to allow free horns movement in maximal
negative deflection.
Put the servos into the proper holes - see picture and
fix it by the fiber tape.
Cut holes for receiver , regulator and for bateries –
depend on power motor – if you want to use EM400,
with one baterie 3xLi-Pol 2400 mAh, cut only one
hole. For EM 540 with two bateries 3x Li-pol 2400
mAh (combination 3S2P Li-pol), cut two holes.
Before cutting of holes for bateries controll balancing - center of gravity (COG) must be 300-320 mm from the
model head – see pic. 7.
Put the receiver and
regulator into the
proper holes - see
picture and fix it by
the fiber tape .
Final product...

9
RC, motor and deflections setup. Switch on the transmitter, check again the neutral positions. Check the motor
rotation sense, and solder the speed controller cables to the motor power ports. Solder the antinoise capacitors
(50nF) between the motor ports and the motor body – solder one capacitor tap to the motor port, the other
directly to the motor body.
Check the deflection sense and the delta mix proper function. If everything is correct, setup the deflection size.
Recommended setup: elevator +/-15mm,
aileron+/-20mm,
measured on the trailing elevon edge.
Such deflection size results in quite sharp model controls, suitable for combat and advanced pilots. For
recreational flight lower deflections are quite fine.
Fly-in
Model balancing. The proper COG location is 300 – 320mm from the model head – see Pic.7. If the
recommended radio gear is used, the COG is positioned properly by default. If this is not the case, balance the
model. Attention, the delta wings are more sensitive to proper balancing in comparison to standard planes.
Pic. 7 COG position
Final in-flight balancing
Throw the model similarly to a boomerang, holding it on leading edge. Model should immediately fly. Climb
higher and adjust the trims to perform final COG check.
Let the model decline with approx 30° angle, and put the sticks into neutral position. If the angle tends to
increase, and model declines faster, the COG is too much in back, and it!s needed to put some additional weight
in the plane front. If the model tends to reduce the decline, the COG is too far forward. Put some lead on the
rudder. Fine tune the deflections corresponding to your needs.
How to fly. The delta wing is much the same as standard airplane. To make a turn, engage the ailerons and pull
the elevator. When leaving the turn slowly put the elevator to neutral and by countering the ailerons level the
plane.
SWIFT can perform very well in a very limited space. Due to extremely good flight capabilities and high
resistance it is an ideal start into the RC hobby. If setup properly, it can satisfy even very experienced pilots and
give them excellent experience.
We wish you many happy flights.
MS Composit
Tursko 37
252 65 Tursko
www.mscomposit.com