World's Smallest Straight 4 Engine, #2

A custom designed miniature 4-cylinder engine called the Coyotee. Water cooled, spark ignition, overhead cam. See more at http://www.moyermade.com

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4 Cylinder OHV Engine
A short video showing the new stainless collector/header that I made. I had wanted to do this for some time but didn't have much luck bending the tubing. I built a tubing bender and finally made the parts. It is silver soldered together. The sound has changed somewhat but the video doesn't do it justice. This movie clip is from the carburetor/distributor side of the engine. You can see the distributor advance when the throttle is opened.





World's Smallest Straight 4 Engine, #1
A custom designed miniature 4-cylinder engine called the Coyotee. Water cooled, spark ignition, overhead cam. See more at http://www.moyermade.com





Model 4 cylinder engine
Hand made 4 cylinder 1/4 scale model engine





AE 0.1CC Diesel Model Engine Micro
This is a video of the tiny 0.1CC AE diesel two stroke engine. My example shows so-so worksmanship, but the piston and liner fit was acceptable. The tank screws were filed to length and the needle was defective. The needle valve and venturi were replaced with an old Super Tigre part for an idle circuit from a carb. After sorting out the needle and compression settings it starts and runs fairly well. It doesn't make much power turning a Cox 3x1.25 prop at 18,000 rpm. The built in tank is very small and suitable for free flight. i intend to build an RC model and a larger tank to replace the stock one. Testing was done with a small external tank. These were produced by Allen Engineering in the UK in the 199's. They are not available today except for Ebay where they turn up once or twice a year at 100-200 USD.




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