Category Archives: Technical Article

Rebuild of a single cylinder press-pin crankshaft – How I do it.

A step by step explanation of how I rebuild simple crankshafts. -Jeff Henise

Expansion chambers for an airplane!?

When I got a call to make a set of expansion chambers for “The world’s smallest manned twin engine airplane” I just could not resist!

The Colomban Cri-cri (or Cricket) was designed in the early 1970’s by Michel Colomban. Since then many renditions have been built. Most Cri-cri aircraft are powered by two single-cylinder 2-stroke engines making 9-15 HP each. However this Cri-cri is special in that it has two twin-cylinder 2-strokes as the power plants!