0ml 30ml PET Plastic V3 Dropper Bottle Pump Sprayer For Liquid Juice Oil Cigarette Smoke Medicine

What is a Smoke Oil Bottle/Tank?

A smoke oil bottle (more accurately called a smoke oil tank or reservoir) is a container installed in a model aircraft (or other vehicle) that holds the special fluid used to generate smoke. It is part of a complete smoke system that injects this fluid into the hot exhaust path of the engine, where it instantly vaporizes into a dense, white smoke trail.

Its primary function is to safely store and supply smoke oil to the smoke pump.

Key Components and Features of a Smoke Oil System

The bottle itself is just one part of the system. Here’s how the entire system works together:

1. Tank/Bottle: The container that holds the smoke oil.

   • Material: Typically made from high-impact plastic (like polyethylene) or fiberglass. It must be resistant to the chemicals in the smoke oil.

   • Shape: Often tall and cylindrical or faceted to fit tightly inside an aircraft fuselage while maximizing volume.

   • Cap: Features a securely threaded cap with a gasket to prevent leaks from vibration and pressure changes.

2. Clunk Line & Weighted Pickup: Inside the tank, a flexible hose (the clunk line) is attached to the outlet. The end of this hose has a weighted filter (the "clunk") that:

   • Falls to the lowest part of the tank due to gravity.

   • Ensures it can pick up the last drops of oil, regardless of the aircraft's orientation (e.g., during inverted flight, loops, and rolls).

   • Has a filter to prevent debris from clogging the system.

3. Smoke Pump: An electric pump (usually programmed through the RC transmitter) that draws oil from the tank and pumps it at a controlled rate to the exhaust. It is the heart of the system.

4. Injection Line: The tubing that carries the oil from the pump to the injection nipple on the muffler or exhaust header.

5. Exhaust Muffler: The point of injection. The oil is sprayed into the extremely hot exhaust gases (400-700°F / 200-370°C), where it vaporizes instantly into smoke.