The Kolm EZ-77 is the logical development of the EZ-65. The steel sleeve has been taken out, Nickel-Silicon plating on the original aluminum cylinder enlarged the bore and has resulted in an increased capacity and, of course, more power with less weight.

The Kolm EZ-77 is very suitable for Warbirds as well as other Scale and aerobatic models. The EZ-77V3 is available with a brushless electric starter, making it a good choice for big powered gliders.

The brushless engine starter is so realistic, just like the full-size Warbirds, with a very slow turning speed, slowly accelerating, and then firing.

The EZ-77V3 can be supplied as turning clockwise or anti-clockwise.

·         Nickel-Silicon plated cylinder surfaces, far lighter than steel cylinder liners guarantee high wear resistance

·         Assembled heat-treated steel crankshaft with Tungsten balance weight inserts

·         Conrod CNC milled from high strength steel, and have a spindled bore surface for the big end needle roller bearing

·         Plain bronze small end bearing

·         Double camshaft acting on overhead valves by pushrods

·         A light weight, low inertia valve train allows relatively high RPM

·         Crankcase CNC milled from high-strength aerospace alloy

·         Excellent Müller-Microprocessor-Ignition developed by Günter Müller in Germany, now made in Austria by Kolm Engines

·         Valves and pistons are manufactured at Kolm Engines in Austria on modern CNC machines

·         Walbro carburetor WT-225

·         Engine length adjustable by longer and shorter optional prop hubs

·         Rapid spares delivery and repair service from Germany by Toni Clark practical scale GmbH. 

·         Each and every Kolm engine is tested in the factory and run for thirty minutes. Of this test a detailed proof certificate is supplied.