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ENGINE MANUAL

3W 342i B2 / TS

www.3w-modellmotoren.com

342i B4

342i B4 TS

Summary of Contents for 342i B2

Page 1: ...ENGINE MANUAL 3W 342i B2 TS www 3w modellmotoren com 342i B4 342i B4 TS ...

Page 2: ...f power And a 36 month conditional warranty We wish you plenty of fun and success with your new 3W engine Sincerely The 3W Team Limited Warranty We grant a 36 month warranty from the date of purchase This warranty is limited to the replacement of defective parts that are a direct result of faulty material or manufacturing No claim concerning a defect caused by non compliance with installation or o...

Page 3: ...adequate filtering of your fuel Maintain your engine properly keeping it clean etc Use a pre flight check list before flying your model Secure your model properly when starting Not use your fingers or hand to start your model Adjust your carburetor correctly Not adjust your carburetor while the engine is running Insure that your spark plug is in good condition and is secured correctly Insure that ...

Page 4: ...engines up to 106cc or 3 8 aircraft plywood for engines in the 150cc class For builders experienced with making composite motor boxes a comparable strength should be attained It is absolutely vital to ensure a tension free mounting of the engine The surface that the engine is mounted on must be on an even plane i e a flat and level surface so that there is no strain on the engine itself Again this...

Page 5: ... and then away from the cylinder s Cavitating hot air can will overheat the engine Engine Cooling A proper cooling system is vital for any engine An air cooled engine requires an appropriately sized air intake Also to keep this air cooling process working the incoming air must be exhausted Further the exhaust air outlet should be four times 4X the size of the cool air intake Example 10 square inch...

Page 6: ...verheated condition where sealed ball bearings and needle bearings could be damaged Further you risk an elongation of the heated engine parts and or having an oil film build up which could lead to a seized piston or pistons Following the instructions and recommendations in this manual will keep the engine operating comfortably within the normal temperature range Rear induction Carburetors whether ...

Page 7: ...rtant If the electronic ignition overheats it will malfunction e g backfiring or shutting down Ignition details The red cable is positive The ignition timing has been set at our factory When fitting a new ignition it is important to achieve the correct coordination of the sensor s to the magnets Refer to our special ignition description for further information Canister mufflers To prevent damage t...

Page 8: ...opeller on a level surface The maximum difference of the blade heights should be no more than 1 64 The propeller tips must have an identical shape This is especially important when using 3 or 4 blade propellers You must use a drill press to drill your propeller You must drill the propeller from the rear A drill guide is recommended but the propeller washer can be used as a drill template Fix the p...

Page 9: ... carburetor horn with a 2 6m machine screw and nut Then solder the arm in place Refer to the attached illustration Note The use of a soft pushrod for the throttle plastic or nyrod is not recommended Use a metal or carbon fiber pushrod with a plastic ball joint or plastic clevis at each end This will keep your RPM much more consistent and accurate around idle where it really counts Engine Break In ...

Page 10: ...the engine would basically be broken in Note For break in a smaller propeller is recommended Important Remember that when the engine running ever person must stay behind the line of the rotating propeller never to the side or the front After Initial Break In Use high grade fully synthetic 2 stroke oil Use the oil manufacturer s recommended gas to oil mixture Use a high Octane unleaded fuel 98 Octa...

Page 11: ...olts 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 Never fill the fuel tank via the carburetor fuel line Use the same I D for tank ventilation and the carburetor fuel line Use small plastic cable ties on all fuel line to fitting connections We recommend cutting the fuel line in the...

Page 12: ...ems or any other parts of the body into the rotating propeller Never tune the carburetor whilst engine is running Stop the engine Tune the carburetor and start the engine again Repeat this procedure until the carburetor is properly tuned 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 Onl...

Page 13: ... s Switch on the ignition Flip the propeller until the engine pops starts and stops quickly Wait for the propeller to stop spinning turn off the ignition and open the choke s Switch the ignition back on Flip the propeller again until the engine starts Warm up the engine for at least 20 seconds Due to the high power and torque of the engine s it is not recommended to open the throttle abruptly Prec...

Page 14: ...Go back to the recommended settings and adjust your carburetor from there This problem may also indicate a dirty carburetor or faulty ignition The engine runs rough and is vibrating strongly Balance the propeller Check the ignition timing Check your plumbing for air fuel leaks Check your spark plug for carbon and check the spark plug gap Check the motor mount to be sure it is rigid Check to make s...

Page 15: ...6500 min 1 rpm Weight Poids one spark Weight Poids two spark 8570 g 19 91 Ibs incl ignition 8820 g 19 46 lbs incl ignition Crankshaft 3 Ball bearings 3 Roulement à billes Pleuel Connection rod Bielle Needle bearings on both ends Roulement à aiguille aux deux cotés Benzin Gasoline Version 1 50 1 80 Mix full syntethic oil high Octane unleaded fuel 98 Octane is recommended IIS Zündung IIS Ignition V ...

Page 16: ...V 20 kV Rpm max 12 000 rpm 12 000 rpm Magnet red north pole upper dead point upper dead point Magnet green south pole 55 o before upper dead point 55 o before upper dead point Like all other electronic devices the ignition box gets warm under operating conditions For that reason a simple airflow has to be guaranteed Therefore the 4 delivered rubbermounts have to be used for installation insuring a...

Page 17: ...car votre droit de garantie en cas de réclamation n est valade que sur présentation de ce document Cette garantie est valable seulement si accompagnée d une preuve d achat Facture du revendeur Condizioni di garanzia Riconosciamo una garanzia di 36 mesi dalla date di acquisto Questa garanzia si limita esclusivamente alla sostituzi one gratuita dei pezzi difettosi la cui causa è da imputare a difett...

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