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24i - 28i / CS  Engine Manual

more infos: www.3w-modellmotoren.de

 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.

 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.

 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 fuel tank in half. And, then joining them back

together with a brass tube. The brass tube prevents a folding of the fuel line with could 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 cable ties.

Warning!

Failing to read and follow all of the instructions in this manual can lead to unsafe conditions and

damaged equipment. Here are some examples:

 Unbalanced propellers can damage the engine's ball bearings, needle bearings, even

cause the crankshaft to break

 Incorrectly drilled propellers can lead to sheered propeller bolts further leading to accidents

and crashes

Summary of Contents for 24i CS

Page 1: ...ENGINE MANUAL 24i 28i CS www 3w modellmotoren com 24i 28i...

Page 2: ...n 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...

Page 3: ...rmany 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 s...

Page 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...

Page 5: ...ox should be stiff enough to prevent engine vibration and it should also have a solid firewall The firewall of the motor box should be made from 1 4 aircraft plywood for engines up to 106cc or 3 8 air...

Page 6: ...crank case will be distorted leading to the crankshaft starting to twist further leading to the crank case being destroyed To mount the engine directly onto a large wide former or firewall for the fo...

Page 7: ...location position of the engine in the fuselage Operating temperature The normal operating temperature range for your engine is 176 212 Fahrenheit 80 100 Celsius If the temperature of the engine rises...

Page 8: ...gap the ignition module can overheat Important If the electronic ignition overheats it will malfunction e g backfiring or shutting down Ignition details The red cable is positive The ignition timing...

Page 9: ...e 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 reco...

Page 10: ...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 plast...

Page 11: ...ay 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...

Page 12: ...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 fuel tank in half And then joining them bac...

Page 13: ...ly 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...

Page 14: ...t 20 seconds Due to the high power and torque of the engine s it is not recommended to open the throttle abruptly Precision tuning of the carburetor The use of a tachometer is highly recommended And a...

Page 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...

Page 16: ...e Vitesse de rotation 1500 8500 min 1 rpm Weight Poids incl ignition 1345g 2 96 Ibs 1210 g 2 67 Ibs Crankshaft 3 ball bearings 3 Roulement billes Connection rod Bielle Needle bearings on both ends Rou...

Page 17: ...24i 28i CS Engine Manual more infos www 3w modellmotoren de mounting bolt pattern ATTENTION this drawing is in 1 1 size disable any Acrobat print setting to fit it into paper size...

Page 18: ...nt consumption depends on the voltage of battery used with increasing voltage current consumption goes down Like all other electronic devices the ignition box gets warm under operating conditions For...

Page 19: ...cat 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 Con...

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