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Vittorazi Motors COSMOS 300 User Manual

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COSMOS 300
User manual
release V3/2023
Valid for MY23 versions

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Summary of Contents for Vittorazi Motors COSMOS 300

  • Page 1 COSMOS 300 User manual release V3/2023 Valid for MY23 versions...
  • Page 2 Cosmos 300 – User manual – V3...

  • Page 3: Table Of Contents

    4.5 Break-in procedure Safety first, check it 5.1 Maintenance schedule 5.2 Tightening values 5.3 Carburettor setting 5.4 Pre-flight checklist 5.5 Spare parts Warranty 6.1 Warranty limits 6.2 Warranty procedure 6.3 Warranty coverage 6.4 Contacts Cosmos 300 – User manual – V3...

  • Page 4: Introduction

    All the components of Vittorazi Motors are checked and tested in a process of industrial quality control before the assembling. Then by sampling the complete motors are checked to assure the functionality of all the parts through a complete test of twenty minutes on the bench.
  • Page 5 Reading tips: Attention, danger, risk Any situation or condition which may result in a serious danger Recommendation, warning, important advice Cosmos 300 – User manual – V3...

  • Page 6: Be Careful! Read It Completely

    • Vittorazi Motors and its distributors decline any direct or indirect responsibility related to this kind of activity. By using a new engine, the owner agrees that these terms and conditions have been accepted at the time of purchase of the product.
  • Page 7 (Min; Max), contact the aircraft manufacturer. • 90 °C. • 65 °C. The temperature limit of EGT is 650° Celsius. Do not persist above this temperature threshold, engine overheating and irreversible damage could occur. Cosmos 300 – User manual – V3...

  • Page 8: Cosmos 300: What Is It

    3 Cosmos 300: What is it? Cosmos 300 is a single cylinder, two-stroke piston engine, liquid cooled and fuelled with a mixture of gasoline and oil. Power is transmitted from the crankshaft to the propeller shaft through a reduction ratio with spur gear system.
  • Page 9 The engine model is declared in the label located on the engine carter case, between the cylinder and the airbox. Cosmos 300 – User manual – V3...

  • Page 10: Engine Serial Number

    3.1 Engine serial number The serial code of your engine is located on the engine carter case, between the cylinder and the airbox. Cosmos 300 – User manual – V3...

  • Page 11: Technical Data

    Silencer pipe in anodized aluminum. EGT sensor threaded hole Optimized noise reduction Propeller Clockwise rotation Unleaded gasoline with 2,0 % synthetic oil (Motul710) Fuel Unleaded gasoline with 1,5 % synthetic oil (Motul800) The table follows in the next page Cosmos 300 – User manual – V3...
  • Page 12 140 cms, 3 blades: 7.450-7.650 RPM; • 150 cms, 2 blades: 7.350-7.550 RPM; • 150 cms, 3 blades: 7.300-7.500 RPM; • 160 cms, 2 blades: 7.400-7.600 RPM; • 160 cms, 3 blades: 7.350-7.550 RPM. Cosmos 300 – User manual – V3...
  • Page 13 Propeller used is an approved Helix propeller, 160 cms diameter, 2 blades. @ 11,5 °C, 73 % RH, 1003 mbar Thrust [kg] 160 cms propeller, 2 blades [RPMx1000] Fuel Consumption [lt/h] 19,5 18,0 16,5 15,0 13,5 12,0 10,5 [RPMx1000] EGT [°C] [RPMx1000] Cosmos 300 – User manual – V3...

  • Page 14: How To Use It

    The spacer between the hub and the propeller is not authorised for this engine model. Cosmos 300 – User manual – V3...
  • Page 15 The correct balancing of the propeller by static and dynamical procedure, combined with a safe and precise mounting by CNC machined holes. • The reduction of noise thanks to the best profiles and the tip speed below 0,65 Mach. Cosmos 300 – User manual – V3...
  • Page 16 Airbox system (airbox, sleeve, safety devices). • More. In case of damage of the propeller, replace it immediately with a propeller guaranteed by Vittorazi Motors. Replace in any case all screws of the propeller. Cosmos 300 – User manual – V3...

  • Page 17: Fuel

    4.2 Fuel Cosmos 300 engine requires a mixture of gasoline and oil to operate. Choose an open, ventilated, clean location away from dust, sand, grass and any foreign bodies that may come into contact with the mixture. If possible while refuelling, filter the mixture. Make sure that the fuel tank, filter and funnel, are always perfectly clean.
  • Page 18 Wrong oil-fuel mixture, non-compliant oils, wrong fuel or dirty fuel, other reasons already mentioned above, lead to voiding of the product warranty (see also the warranty paragraphs). Cosmos 300 – User manual – V3...

  • Page 19: Start And Stop

    Starting the engine when it is flooded. Full throttle opening. No choke activated. Extremely dangerous condition when performing this operation. Thrust may be violent and instantaneous in the event a sudden start. Cosmos 300 – User manual – V3...
  • Page 20 Disconnect battery from the electrical system before recharging: • Always use a battery charger suitable for the chosen battery to avoid any risk of explosion due to improper charging. • When voltage regulator is used without battery it will fail. Cosmos 300 – User manual – V3...
  • Page 21 If it is placed on the prop side, transmission oil may leak out of the breather valve. In such a case, clean the oil and check the level before use. Cosmos 300 – User manual – V3...

  • Page 22: Engine Warm Up

    If the outside temperature is below 15 °C, cover the central part of the radiator (1) with the radiator band (2). The radiator band is an available option designed by Vittorazi. Cosmos 300 – User manual – V3...

  • Page 23: Break-In Procedure

    Oil 2,5 % or 40:1 Motul710 From 1 to 15 litre of fuel Oil 2,0 % or 50:1 Motul800 Oil 2,0 % or 50:1 Motul710 After the 15 litre of fuel Oil 1,5 % or 66:1 Motul800 Cosmos 300 – User manual – V3...
  • Page 24 Do not keep the engine at max RPM for more than 30 seconds or do not keep constant RPM for a long time. Gradual accelerations and releases are recommended. Regular use Use engine with mixture of oil 2,0 % Motul710 or 1,5 % Motul800. Cosmos 300 – User manual – V3...
  • Page 25 All installed components (engine fixing, electrical system, fuel line system, instrumentation, other parts). Carry out the above operations in accordance with the installation, use and maintenance manual and under the supervision of authorized personnel. Cosmos 300 – User manual – V3...

  • Page 26: Safety First, Check It

    2) rope, spring, hooks or a new pull starter system 3) springs 4) each time the component is disassembled 5) head, exhaust port, decompressor hole 6) when the hoses are disassembled replace the clamps 7) or after 2 years Cosmos 300 – User manual – V3...
  • Page 27 Carburation from spark plug colour Spark plugs Spark plugs connectors Carburettor Carburettor membranes Airbox Snaplock Airbox Airbox sponge and sleeve Reed valve petals Pull starter system The table follows in the next page Cosmos 300 – User manual – V3...
  • Page 28 Exhaust manifold with springs Soundproofing material silencer Silencer rubbers Gaskets (head, cylinder, carburettor, reed valve, exhaust, transmission, water pump) Piston Piston roller bearing Head and cylinder The table follows in the next page Cosmos 300 – User manual – V3...
  • Page 29 Coolant Radiator hoses Radiator rubbers Rubber mountings (engine, exhaust) Oil seal carter case Crankshaft bearings Crankshaft Gearbox oil Transmission bearings Centrifugal clutch Clutch bell Cosmos 300 – User manual – V3...

  • Page 30: Tightening Values

    Snaplock airbox 10 Nm pivots Loctite 243 Airbox fixing 50-70 mm 2,5 Nm clamp (clamp size) Flywheel nut 90 Nm M12x1,25 The table follows in the next page Stator screws 10 Nm M6x25 Cosmos 300 – User manual – V3...
  • Page 31 Pump impeller 8 Nm Electric starter 10 Nm M6x35 screws Electric starter fixing plate’s 10 Nm M6x20 screws Loxeal 83-55/ Pipe support 10 Nm M6x14 bracket screws Loctite 270 Carbon 12-14 Nm propeller screws Cosmos 300 – User manual – V3...

  • Page 32: Carburettor Setting

    If the engine shows any of the problems listed above, the carburettor should be checked by an authorized dealer. Setting Cosmos 300 Screw L 34±2 minutes (sealed for warranty purposes) Screw H 74±2 minutes (sealed for warranty purposes) Idle 1.800-2.000 RPM Cosmos 300 – User manual – V3...
  • Page 33 Choke lever Pulse line inlet Screw L and H of the carburettor is sealed by Vittorazi Motors to ensure the safety of operation. Incorrect setting of screw H can result in serious damage. If the opening of the settings is lower than the table specifications, the mixture will be poor and there is the possibility of breaks, such as seizure, overheating, piston melting, early wear of the components.
  • Page 34 / instructor. Brown / Cappuccino Normal, Optimal, Correct. The carburetion is rich. It is important to Black / Dark / Wet find the cause immediately, with the help of an authorized dealer / instructor. Cosmos 300 – User manual – V3...

  • Page 35: Pre-Flight Checklist

    Switch off the primary and secondary coils alternately to verify the correct functioning of the twin spark system (only twin spark version). Turn off the engine to check the correct operation of the killing switch button. ENGINE IS NOW READY TO TAKE OFF. Cosmos 300 – User manual – V3...

  • Page 36: Spare Parts

    You can download the Vittorazi Motors Illustrated Parts Catalogue (IPC) directly from the website. The manufacturer will ensure immediate availability of spare parts.

  • Page 37: Warranty

    In this case the shipping costs will be on charge of Vittorazi Motors from the address of the client to the factory headquarter. All the parts replaced, both defective or non-compliant, during the interventions of warranty, will become property of Vittorazi Motors.

  • Page 38: Warranty Coverage

    • use of the engine for racing or any other competitive activity; • use of non-original components Vittorazi Motors, non-compliant accessories, other items not approved for the engine; • not authorized modification from original configuration of the product (e.g. the drilling of the exhaust manifold);...
  • Page 39 For any question about the warranty coverage, contact the authorized dealer, that can provide further information. Cosmos 300 – User manual – V3...

  • Page 40: Contacts

    Vittorazi Newsletter: to receive exclusive information and obtain technical safety updates https://www.vittorazi.com/en/newsletter/ Facebook official page: follow us and catch commercial promotions https://www.facebook.com/vittorazimotors/ Facebook official group: support our initiatives and share your experiences with us https://www.facebook.com/groups/VittoraziMotorsSupportOnline/ Cosmos 300 – User manual – V3...
  • Page 41 Engine model Engine serial number Date of purchase Dealer / Distributor / Seller Dealer Flight Hours Operations Date Signature hours & Stamp Suggested maintenance Mandatory maintenance Suggested maintenance Mandatory maintenance Suggested maintenance Warranty expiry Cosmos 300 – User manual – V3...
  • Page 42 Cosmos 300 – User manual – V3...
  • Page 43 Cosmos 300 – User manual – V3...
  • Page 44 Cosmos 300 – User manual – V3...

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