Kolm BX-240-4 brushless starter

The BX-240-4 is exactly the flat four twin that so many have waited for. It is now at last possible to build 33% to 40% scale models powered by a 4-cylinder four stroke engine.

The Kolm BX-240-4 is ideal for all models up to 35 kilos (77 lbs) in weight and with the optional electric starter leaves nothing to be desired.

·         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

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

·         Plain bronze small end bearings

·         Single 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

·         Two Walbro carburetors WT-225