Smoke pump idea
 

Is is workable to use the chain oiler as a smoke fluid pump?

My thought is to use a loop of tubing so that smoke oil is always circulating back to the tank. The valve to the muffler comes in the middle of the loop. A restriction on the return at the tank side of the tee would provide pressure to squirt the oil into the muffler when the valve was opened wih the servo. .

The ECHOs I mess with have a nice looking oiler that I have been removing. This seems like a simple neat way to make a smoke system.

RE: Smoke pump idea
 

Nice idea, but unfortunately it won't work. The chain oil pump doesn't pump near enough oil.

AV8TOR

RE: Smoke pump idea
 

Ude the pump side of an old Walbro carb.

put an outlet tube where the needle and seat normally is

RE: Smoke pump idea
 

Neat idea on the carb pump. Put a tee in the pressure tap line?

I looked up flow rates on chain oilers. I found that one saw runs up to 18cc/min, about 0.6 ounces, at 10K rpm. That is with viscious bar oil. We run slower but the smoke oil is real thin so it should move more? I guess the real question is what is the flow rate of smoke fluid in a real smoke system?

I obvioulsy don't know anything about smokes systems but the guys at the club keep teasing me about it. They all fly little airplanes. It'd be a kick to lay out a smoke trail but I don't want to make a Manhatten project out of it.

RE: Smoke pump idea
 

I've had a few chain saws and they didn't set the world on fire with the oiler.

You may never know unless you try it.

RE: Smoke pump idea
 

On smaller engines, like around 25cc, you need about an ounce a minute or more. Larger engines need more.

AV8TOR