Sebart MC-72 50E ARF scale Programmierhandbuch

SebArt professional line

MC-72 50E ARF scale

ASSEMBLY MANUAL

The real plane

The Macchi Castoldi MC-72 flew to become the fastest propeller dri en

sea plane e er on October 23, 1933, with the still standing record speed of

709.2 km/h ( 440.68 mph.)

In 1928 Macchi Aeronautica start work with G. Diliberto and M. Castoldi

on the Macchi Castoldi MC-72, at that date the most re olutionary project

for a Schneider Cup racer and world record achie er.

The MC-72 incorporated a twin engine design, two Fiat V-12 engines

linked together one behind the other, powering two counter-rotating

propellers. An arrangement that worked surprisingly well, because this

design ad antage is that counter-rotating propellers balance the effects of

torque, making easier the control of the plane in e ery flight condition.

The aircraft could be a hand full for no ice pilots and more experienced

pilots praised the MC-72 for its speed, responsi eness, and directional

stability.

The Macchi Castoldi MC-72 remains a winner to this date.

Specifications:

Year Built: 1931

Primary Function: racer

Length: 8,32 m (27' 4")

Wingspan: 9,48 m (31' 10")

Weight Empty: 2.500 kg (5,512 lbs.)

Max. Speed: 709 km/h (440 mph)

Engine: 2 x Fiat AS.6 V-12

Horsepower: 2,850 hp

The model

The MC-72 50E ARF scale, was designed by the 13 times Italian

Champion Sebastiano Sil estri, ice-European Champion and

F.A.I World Cup winner F3A.

This professional ARF kit is the result of Sebastiano’s long

research, experience in F3A and his passion for scale planes. This

combined with an extremely light weight structure and with many

small aerodinamical tricks gi e the MC-72 50E an impressi e

precision and easy control at any airspeed and flight condition.

The MC-72 50E can do it all… it can start and land ery easy on

water as on ground with grass surface, thanks to the small wheels

on floater’s bottom. It is ready for any pattern manou ers as for

unbelie able easy knifeedge flights, loops, rolling circles, negati e

flat spins... and almost anything else you can dream up from a sea

plane are waiting you!

.....the onl aerobatic-fun limit is our fantas !

Specifications:

Wing Span:………………...…….............................152 cm

Length:….......…….……………..........................…140 cm

Wing Area:……........................................................40 dm2

Weight:……..................................2.900g. RTF less battery

Radio:.....5-Channel with 2 standard + 2 low profile ser os

Recommended power set up:

Motor:....................................................... Hacker A50-14S

ESC:…......................................Hacker Master Basic 70 SB

Propeller: …..........................….…....................APC 16x8E

Battery: ….........................................…4000-5S or 4500-5S

Required radio, motor and batter

Radio equipment:

• Minimum 5-channel radio system

• 2 standard + 2 low profile ser os (JR PROPO DS8301 and DS9511)

• 2 ser o extension 100mm, for aileron’s ser os

Recommended electric motor for best performance:

• Hacker A50-14S + X70 SBec-Pro controller + APC 16x8E

Recommended Li-Po battery pack for best performance:

• 4000mAh 5S or 4500mAh 5S

Additional required item, tools and adhesives

Tools:

• Drill

• Drill bits: 1,5mm

• Phillips screwdri er

• Hobby knife

• Sanding paper

• Masking tape

• Soldering iron

Adhesives:

• thin CA

• medium CA

• silicon

Warning

This RC aircraft is not a toy!

If misused, it can cause serius bodily harm and damage to property. Fly only in

open areas, preferably in official flying sites, following all instructions included

with your radio and motor.

Before starting assembl

Before starting the assebly, remo e each part from its bag and protection for a prior

inspection. Closely inspect the fuselage, wing panels, rudder, and stabilizer for

damage. If you find any damage or missing parts, contact the place of purchase.

If you find any wrinkles in the co ering, use a heat gun or co ering iron to remo e

them. Use caution while working around areas where the co ering material o erlap to

pre ent separating the co ers.

Warrant information

SebArt garantees this kit to be free from defects in both material and workmanship at

the date of purchase.

This warranty does not co er any parts damage by use or modification, and in no case

shall SebArt’s liability exceed the original cost of the purchased kit.

Further, SebArt reser e the right to change or modify this warranty without notice. In

that SebArt has no control o er the final assembly or material used for the final

assembly, no liability shall be assumed or accepted for any damage of the final user-

assembled product. By the act of using the product, the user accepts all resulting

liability.

If the buyer is not prepared to accept the liability associated with the use of this

product, the buyer is advised to return this kit immediately in new and unused

condition to the place of purchase.

Control throws

Please, follow carefully the recommended linkage setups:

For the ILERON we recommend the following throws:

High rate: 30° left & right

Normal flight: D/R: 40% Expo: 40%

Snap, knife edge loop: D/R: 80% Expo: 60%

Start, spin, landing: D/R: 100% Expo: 70%

For the ELEV TOR we recommend the following throws:

High rate: 30° up & down

Normal flight: D/R: 40% Expo: 50%

Snap, knife edge loop: D/R: 40% Expo: 50%

Start, spin, landing: D/R: 100% Expo:75%

For the RUDDER we recommend the following throws:

High rate: 30° left & right

Normal flight: D/R: 60% Expo: 20%

Snap, knife edge loop: D/R: 80% Expo: 30%

Start, spin, landing: D/R: 100% Expo: 50%

Note: the Expo is (+) for JR systems, and (–) for Futaba systems.

Mixing

We recommend the following mix (if you ha e a programmable computer radio):

Rudder →Elevator UP

full rudder to the right, the ele ator ha e to go up (positi e) approx. 24%

full rudder to the left, the ele ator ha e to go up (positi e) approx. 12%

Rudder → Ailerons

full rudder to right the ailerons need to go right 4%

full rudder to left the ailerons need to go left 5%

Use 10% aileron differential (more up)

Recommended Center of Gravit

The recommended CG is 85mm behind the leading edge of wing.

Pre-flight

Never attempt to make full throttle dives! This model ha e to be flown like a full-

scale airplane. If the airframe goes too fast, such as in a high throttle di e, it may fail.

Throttle management is absolutely necessary.

Range test our radio

Before fly, be sure to range check your radio as manufacturer’s instruction

manual of you radio-system recommend.

Double-check all controls (aileron, ele ator, rudder and throttle) mo e in the

correct direction.

Be sure that your motor battery pack is fully charged, as per the instructions

included with your batteries and that your radio is fully charged as per its

instructions.

Finall ... have nice flights!

SEB RT International S.r.l.

Via L. Tabellione, 1

47891 Ro ereta - Repubblica di San Marino (RSM)

www.sebart.it

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