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112i B4 / QS Engine Manual

more infos: www.3w-modellmotoren.com

 Not having the plane secure can be lead to serious accidents. Depending on its size use

one, two, or more helpers to secure your model. Always tell your helpers to be ready for

the model to start at full power. Remember, these engines have a high power output.

 Do not put your finger(s), any items, 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.

 Only 3W-ignition systems should be used for proper operation.

Important:

Using unauthorized products or failing to follow the instructions in this manual will void your

warranty immediately.

Pilots check list

We strongly recommend checking the following agenda for your own safety before starting!

 Check the propeller bolts for tightness

 Check that the spinner is firmly attached

 Check the propeller for possible damage

 Check to be sure you have the throttle position at idle

 Check all batteries

 Check servo functions

 Check to see that the ignition switch is OFF

 Check pressure (6-8 bar) system of retract (if applicable)

 Check all linkages for play

 Check your wheels for possible damage and easy running

 Check the wing mounting for tight fit and proper attachment

 Check the canopy for tight fit and proper attachment

 When starting the engine one person (minimum) has to hold the model

Starting Procedure

If you have read and understood this entire manual, and followed its recommendations, you are

ready to start your new engine.

Содержание 112i B4

Страница 1: ...ENGINE MANUAL 112i B4 QS www 3w modellmotoren com...

Страница 2: ...en designing two and four stroke engines for gasoline and diesel for 38 years We are continually looking at new technologies and working on new designs Please be assured that we at 3W always strive to...

Страница 3: ...ur primary concern Therefore any alteration modification or addition to the engine is not recommended and will void your warranty immediately Warning This engine is not a toy Serious injury and or dea...

Страница 4: ...equate 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 h...

Страница 5: ...gines 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 e...

Страница 6: ...nd 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...

Страница 7: ...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 instruct...

Страница 8: ...Refer to our special ignition description for further information Canister mufflers To prevent damage to the header s a flexible support bracket is required to mount the canister s The location for t...

Страница 9: ...e center bore using a bolt and nut Drill one hole put one of the propeller bolts into the hole Continue until the last bolt is used If you cannot hand tighten all of your prop bolts easily then you ha...

Страница 10: ...accurate around idle where it really counts Engine Break In Use a 2 stroke petroleum based oil preferably ashless as this type of oil has a good honing effect which helps to break in the engine Use a...

Страница 11: ...rm well The list below shows some 2 stroke oils that our customers from abroad have used with success Pennzoil at 50 1 Redline at 40 1 Amsoil DOMINATOR Racing Oil at 50 1 Amsoil Saber 100 1 Pre Mix Oi...

Страница 12: ...ould cut the fuel supply for the engine see tank photo The use of soldered on DUBRO barbs on the ends of the brass tubing is highly recommended Again always secure the fuel line with small plastic cab...

Страница 13: ...ed for proper operation Important Using unauthorized products or failing to follow the instructions in this manual will void your warranty immediately Pilots check list We strongly recommend checking...

Страница 14: ...recommended to open the throttle abruptly Precision tuning of the carburetor The use of a tachometer is highly recommended And again never adjust the needles while the engine is running 1 Using the t...

Страница 15: ...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...

Страница 16: ...mm 1 42 in Stroke Course 26 mm 1 02 in Speed range Vitesse de rotation min 1 rpm Weight Poids Ibs incl ignition Crankshaft 3 Ball bearings 3 Roulement billes Connection rod Bielle Needle bearings on b...

Страница 17: ...112i B4 QS Engine Manual more infos www 3w modellmotoren com mounting bolt pattern ATTENTION this drawing is in 1 1 size disable any Acrobat print setting to fit it into paper size...

Страница 18: ...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...

Страница 19: ...icat car votre droit de garantie en cas de r clamation n est valade que sur pr sentation de ce document Cette garantie est valable seulement si accompagn e d une preuve d achat Facture du revendeur Co...

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