3W 85XI Series, Manual

Page 1: ...ENGINE MANUAL 3W 85XI 85XI TS CS series www 3w modellmotoren com ...

Page 2: ...been 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 provide you with engines that are state of the art You can count on your 3W engine to have a high level of precision high torque in the low rpm range excellent running characteristics a long life l...

Page 3: ...ntee 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 Warning This engine is not a toy Serious injury and or death can occu...

Page 4: ...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 5: ... box 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 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 mount...

Page 6: ...he 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 following reason a If the cylinder s is are too close to this wide former or firewall the floating air cannot pass freely over and then away from the cylinder s Cavitating hot air can will overheat th...

Page 7: ...l 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 above 230 degrees Fahrenheit the engine is in an overheated condition where sealed ball bearings and needle bearings could be damaged Further you risk an elongation of the heated engine parts and o...

Page 8: ...16 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 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 infor...

Page 9: ...t 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 propeller washer onto the propeller in the center bore using a bolt and nut Drill one hole put one of the propeller bolts ...

Page 10: ...d 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 Use a 2 stroke petroleum based oil preferably...

Page 11: ... 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 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 sh...

Page 12: ...or 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 br...

Page 13: ...perly 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 c...

Page 14: ...ast 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 again never adjust the needles while the engine is running 1 Using the tachometer tune the engine for maximum power with the high needle H 2 Again using the tachometer richen the high needle H until ...

Page 15: ...h 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 sure the engine is mounted on a level surface so that the crankcase is free of tension Check the engine and propeller bolts The engine doesn t reach a normal RPM at...

Page 16: ...3W 85 XI 85XI TS CS series more infos www 3w modellmotoren com TILLOTSON CARBURETOR membrane ventilation fuel connector low needle high needle throttle choke ...

Page 17: ...00 8500 min 1 rpm Weight Poids 85 xi 2395 g 5 28 Ibs incl Zündung ignition Weight Poids 85 xi TS 2520 g 5 55 lbs incl Zündung ignition Crankshaft 3 Kugellager 3 Ball bearings 3 Roulement à billes Connection rod Bielle Nadellager an beiden Enden Needle bearings on both ends Roulement à aiguille aux deux cotés Gasoline Version 1 50 1 80 Mix full syntethic oil high Octane unleaded fuel 98 Octane is r...

Page 18: ...3W 85 XI 85XI TS CS series 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 ...

Page 19: ...ent 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 that reason a simple airflow has to be guaranteed Therefore the 4 delivered rubber mounts have to be used for installation insuring a one millimetre gap underneath the box Cable information Sensor ca...

Page 20: ...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...