I have 3 Saitos, a 125 and 2x 82. On the 82 I put a nipple in the intake manifold and vented the breather there. No affect on performance and a LOT cleaner around the front of the model.

Problem is, these Saitos are prone to leakage around where the inlet manifold enters the head, and adding a nipple & pipe leads to more vibration of the inlet manifold and quicker wear of the seal.

So recently I've been trying a better solution. The problem with the breather is the need to keep the pipe short to allow the oil to vent. So...

You'll need a one way valve (e.g., a perry check valve) and a T piece. Take a short piece of fuel line from the breather nipple to one side of the "straight-thru" bit of the T. On the other "straight-thru" side, put a short bit of tube and the check valve. Orientate the valve so the engijne can suck air through it but not blow air out of it. On the third T outlet put a long piece of tube routed to a place where the oil can egress; I've got about 14" of tube which runs down the main undercarriage leg so the oil ends up nowhere near the airframe.

My thought is this. As the engine blows thru the breather, it blows air and oil along the long piece of pipe. As it sucks, the path of least resistance is the check valve, so it sucks clean air in thru it. End result is the oil makes its way along the long pipe to freedom, but the breather can still breathe.

So far I've run about 4 tanks through on the ground and not seen any problems, but I'd still say I'm experimenting; just waiting for some decent weather to try it in the air!

Anybody else tried anything like this?

HS