3W 140i R2 Manual - Page 8

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Important:

This exit area needs to be four times (4x) as large as the intake area.

Propellers

•

Only use propeller brands and sizes that are approved for your engine

•

The propeller blades must be of the same length

•

The propeller must be flat (You can check for flatness by putting the propeller 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 propeller washer onto the propeller in the 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 have not drilled the propeller

correctly. This can lead to sheared propeller bolts.

•

Balancing your propeller is absolutely critical to the health of your engine. You must keep

your propeller balanced. (Propeller balancers are available from DUBRO, and others.)

•

Always remember that when the engine is running every person must stay behind the line

of the rotating propeller; never to the side or the front!

Carburetor settings

Before each engine is shipped it has to pass QC and is then test run. We do a basic adjustment

of the carburetor needles at that point.

Important: Do not remove the carburetor spring as the spring helps keep the carburetor butterfly

aligned properly. Merely release the ends of the spring so that it no longer holds the butterfly

closed.

140i R2 - 150i R2 / TS Engine Manual

highspeed needle H:

low speed needle L:

more infos: www.3w-modellmotoren.com

see technical specifications