3W 55i Manual
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3W 55i Manual

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ENGINE MANUAL
55i
55i CS
www.3w-modellmotoren.com

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Summary of Contents for 3W 55i

  • Page 1 ENGINE MANUAL 55i CS www.3w-modellmotoren.com...
  • Page 2 3W 55i / 3W 55i CS 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: Limited Warranty

    In case of defect during the period of garantee, return this product to your nearest 3W-Dealer or to 3W -Germany direct, at your costs. The garantee is limited to the value of the product. The guarantee does not cover any damage caused by misuse or neglect, accidents, abrasion, exposure to extreme temperatures, solvents, acids, water, normal wear and tear or damage by common carrier.
  • Page 4 3W 55i / 3W 55i CS 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.

  • Page 5: Engine Installation

    3W 55i / 3W 55i CS 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 6: Engine Cooling

    3W 55i / 3W 55i CS Engine Manual Mount the engine to the motor box with high tensile bolts. Once mounted you now have a sub- assembly that you can mount to your fuselage. Spacers can be made from hardwood dowels (3/4"...

  • Page 7: Operating Temperature

    3W 55i / 3W 55i CS Engine Manual Baffling Deflecting of the air (baffling) to and over the cylinder(s) is highly recommended for engine cooling. The idea is to get all of the cool air that is coming through the air intake opening(s) to hit the middle of the cylinder(s) directly, and then be forced over the cylinder(s), creating turbulent air moving through the cylinder(s) fins.
  • Page 8 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.

  • Page 9: Carburetor Settings

    3W 55i / 3W 55i CS Engine Manual being installed below it. Close off the lower compartment at its rear with an angled former. Locate this former 1" behind the back of the canister(s). Next cut a hole in the bottom of the fuselage just under the rear of the canister(s).

  • Page 10: Carburetor Linkage

    3W 55i / 3W 55i CS Engine Manual Important: Do not remove the carburetor spring as the spring helps keep the carburetor butterfly aligned properly. Merely release the ends of the spring so that it no longer holds the butterfly closed.

  • Page 11: Additional Installation Notes

    Use a high Octane unleaded fuel (98 Octane is recommended) • 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 12 3W 55i / 3W 55i CS Engine Manual • Never remove the sparkplug cap by using a mechanical aid like pliers. Only remove the cap by hand using a twist/pull movement. • The spark plug cap must be firmly seated to the sparkplug. If the spark plug cap is not firmly seated there is a very good possibility that you will experience radio interference.
  • Page 13 • 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 14: Starting Procedure

    3W 55i / 3W 55i CS Engine Manual Starting Procedure If you have read and understood this entire manual, and followed its recommendations, you are ready to start your new engine. • Use a rubber stick to start the engine. Never use your hand or fingers! •...

  • Page 15: Troubleshooting

    3W 55i / 3W 55i CS 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 16: Tillotson Carburetor

    3W 55i / 3W 55i CS Engine Manual TILLOTSON CARBURETOR choke membrane ventilation fuel connector throttle low needle high needle more infos: www.3w-modellmotoren.com...
  • Page 17 3W 55i / 3W 55i CS Engine Manual Metrics Techn. specifications / Caracteristiques techniques Cylinder capacity / 53,2 ccm / 3.25 cu.in Power / Puissance 6 PS / HP / CV; 4,4 kW Bore dia. / Alesage 44 mm / 1.73 in Stroke / Course 35 mm / 1.38 in...
  • Page 18 3W 55i / 3W 55i CS Engine Manual mounting bolt pattern ATTENTION: this drawing is in 1:1 size. disable any Acrobat print setting to fit it into paper size. more infos: www.3w-modellmotoren.com...
  • Page 19 Red / black short with plug connection for red LED, long contact - Yellow / white with plug connection for 3W tachometer and other options Info about red LED Ignition battery switched on: LED on Propeller 2 turns (flip):...
  • Page 20 3W 55i / 3W 55i CS 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...

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55i cs

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