I see a potential problem here...


In a normal (Saito, OS, clones and TT) four-stroke engines, if you hook the crankcase excess oil nipple to the intake manifold:

At low throttle setting the manifold vacuum is high and the blow-by is minuscule...

A long period at low throttle could potentially lead to bottom-end oil starvation, as most of the oil is sucked out from the crankcase.

At high throttle settings this problem disappears, as blow-by increases and manifold vacuum decreases.


If you hook the crankcase excess oil nipple to the muffler, at high throttle settings the pressure in the muffler should be higher than in the crankcase. The result could be 'lubrication' of the bearings with hot exhaust gas...

If we just leave it, your model will just be a bit dirty, after a day of flying...
Isn't this a pretty normal situation, with our 20% oil mix fuel???


Just stop being spoiled brats and wipe your model with Windex™ at the end of the day.
Is it so much of a bother to even raise this issue?

If you can't stand the oil, glow engines are probably not for you...