How-To - "Big Smoke" RC Oil Injectors

Updated Now has pump running test fluid spray pattern from nozzles with flow adjustments. This is a "How-to" video for making your own smoke oil nozzles that will produce clouds of smoke, while reducing the amount of oil you use and keeping your plane cleaner. The best way to adjust your flow/pump speed is with the injectors removed and squirting back into a test reservoir. You should dial back the pump speed in your radio using the end point adjustments so to avoid excessive back-pressure. With the throttle at full, watch the flow from the nozzles, adjust the high endpoint (for your pump channel in your radio) down until you get the lowest pump rpm that still produces a good steady flow. Then bring the throttle down to your lowest "pump on" mix, (I have it at idle so I get some smoke on flat spins etc.) and adjust your low endpoint until the pump is just barely spinning. Depending on the temperature/oil viscosity you may have to move up the low pump speed to keep it spinning. As far as oils, I have used "Super Dri" smoke oil and also "Robart Liquid Sky", both worked great with the latter being about $40.00 cheaper per 5 gal. bucket. SMOKE ON!