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110i R2 / 110i R2 CS Engine Manual

It is strictly prohibited:

To mount the engine directly onto spacers for the following reasons:

a. If the spacers are too long and/or not stiff enough the engine could vibrate leading

to the crankshaft starting to twist, further leading to the crank case being destroyed.

b. If spacers are used to adjust the side and/or down thrust and this spacing no longer

provides an even plane (i.e., a flat and level surface) the 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
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 inches of air intake area would require

40 square inches of exhaust air outlet area

It is up to you to insure that the air flows freely to, over, and away from, the hot cylinder(s) and

muffler(s). Please refer to Engine Installation for motor box considerations, and to the following

tips on baffling.

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. The freely flowing, but directed and turbulent air between the fins

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Summary of Contents for 110i R2

Page 1: ...ENGINE MANUAL 110i R2 110i R2 CS www 3w modellmotoren com...

Page 2: ...troke 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 t...

Page 3: ...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...

Page 4: ...uel 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 Ad...

Page 5: ...ircraft 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: ...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 mus...

Page 7: ...g Temperatures above 270 C are critical and over 300 C piston can seize and could completely damage the engine Temperatures below 180 C create remains carbon on the piston crown Increasing remains hit...

Page 8: ...mation 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...

Page 9: ...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 have not drilled the propeller co...

Page 10: ...t 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 mixture of 32 1 or even 30 1...

Page 11: ...kplug If the spark plug cap is not firmly seated there is a very good possibility that you will experience radio interference www 3w modellmotoren com Another method that can be used for break in woul...

Page 12: ...or 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...

Page 13: ...ortant 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 yo...

Page 14: ...hrottle 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...

Page 15: ...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...

Page 16: ...110i R2 110i R2 CS Engine Manual TILLOTSON CARBURETOR choke membrane ventilation fuel connector throttle low needle high needle www 3w modellmotoren com...

Page 17: ...n Stroke 1 38 in 1 38 in Speed range 1200 8500 min 1 rpm Weight 7 69 Ibs incl ignition Crankshaft 5 Ball bearings Connection rod Needle bearings on both ends Gasoline Version 1 50 2 Mix full syntethic...

Page 18: ......

Page 19: ...arantla vale solo si presentada bei einer Reklamation nicht vorgelegt Cette garantie est valable seulement junta a la prueba de cuempra recibo worden kann si accompagn e d une preuve de pago d achat F...

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