Related Manuals for 3W 684i B4
Summary of Contents for 3W 684i B4
- Page 1 684i B4 / TS / QS Engine Manual ENGINE MANUAL 684i B4 / TS / QS 684i B4 684i B4 TS more infos: www.3w-modellmotoren.com www.3w-modellmotoren.com...
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Page 2: Dear Customer
684i B4 / TS / QS Engine Manual Dear customer, Thank you for placing your confidence in 3W. Our long experience (since 1985) in designing and producing model airplane engines, ranging from single up to six cylinder, has been utilized to provide you with the best engine possible. - Page 3 684i B4 / TS / QS Engine Manual Important! For your safety and for the safety of those around you -- also to learn what is required to maintain your warranty - we strongly advise you to read this entire manual carefully BEFORE you start using the engine.
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Page 4: Engine Installation
684i B4 / TS / QS Engine Manual Engine Installation The engine should be mounted on a motor box that will in turn mount to the fuselage. A quadrilateral shape (gradually increasing in size as it goes away from the motor) provides the best circulation of air. -
Page 5: Engine Cooling
684i B4 / TS / QS Engine Manual It is strictly prohibited: To mount the engine directly onto spacers for the following reasons: a. If the spacers are too long and/or not stiff enough the engine could vibrate leading to the crankshaft starting to twist, further leading to the crank case being destroyed. -
Page 6: Operating Temperature
684i B4 / TS / QS Engine Manual through the cylinder(s) fins. The freely flowing, but directed and turbulent air between the fins provides the maximum cooling for an air cooled engine. Without baffling (meaning wood or composite dampers that direct the airflow) the air will take the path of least resistance. Some incoming air will bounce off the cylinder(s) and the rest will escape around the cylinder(s) without coming into contact with the cylinder(s). - Page 7 Canister mufflers To prevent damage to the header(s) a flexible support bracket is required to mount the canister(s). The location for this bracket should be at the canister's center of gravity. 3W canisters have a reinforcement ring at this location.
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Page 8: Carburetor Settings
684i B4 / TS / QS Engine Manual the fuselage. Do not forget to reinforce around this hole. Important: This exit area needs to be four times (4x) as large as the intake area. Propellers • Only use propeller brands and sizes that are approved for your engine •... -
Page 9: Carburetor Linkage
684i B4 / TS / QS Engine Manual Carburetor Linkage Included with your engine is a metal bracket to extent your carburetor pushrod horn. Fix this bracket onto the carburetor horn with a 2.6m machine screw and nut. Then solder the arm in place. -
Page 10: Additional Installation Notes
Use the oil manufacturer's recommended gas to oil mixture • We use 3W 2-stroke oil in our engines here in Germany, but there are other high grade 2-stroke oils that will perform well. The list below shows some 2-stroke oils that our customers from abroad have used with success. - Page 11 684i B4 / TS / QS Engine Manual • Use only ignition on/off switches recommended by 3W • 6 volts is required for the ignition. • Do not skimp on your throttle servo. A high quality throttle servo is recommended for reliable and accurate operation of the carburetor.
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Page 12: Starting Procedure
• Make sure that no gasoline will be splashed into the hot muffler(s). • Only 3W mufflers, or mufflers authorized by 3W with an acceptance (test) number, should be used. • Only 3W-ignition systems should be used for proper operation. - Page 13 684i B4 / TS / QS Engine Manual • Use a rubber stick to start the engine. Never use your hand or fingers! • Insure that your receiver batteries are charged and your receiver is on • Insure that your ignition battery(s) are charged •...
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Page 14: Troubleshooting
684i B4 / TS / QS Engine Manual Trouble Shooting Problem The engine is flooded (the crankshaft housing is filled with fuel). Solution Remove the spark plug; turn the engine to a position where the fuel runs out. The engine starts after being choked but then stops soon after. - Page 15 684i B4 / TS / QS Engine Manual Metrics Techn. Spezifikation / Techn. specifications / Caracteristiques techniques 684i B4 / QS 684i B4 TS / QS Cylinder capacity 684 ccm / 41.73 cu.in Power / Puissance 60 CV; 44,13 kW Bore dia.
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Page 16: Technical Specifications
/ black with plug connection for red LED, long contact + yellow / white with socket connection for 3W tachometer and other options Info about red LED a) Ignition battery switched on: LED on b) Propeller one turn (flip):... - Page 17 684i B4 / TS / QS Engine Manual Garantie-Bedingungen Conditions de garantie Condiciones de la Garantía Wir geben auf unsere Geräte 36 Monate Nous donnons une garantie de 36 mois Ofrecemos una garantia de 36 ano Vollgarantie ab Verkaufsdatum. à compter de la date de vente. Cette desde la fecha de compra, que será...