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
Engine length adjustable by longer and shorter optional prop hubs
Rapid spares delivery and repair service from Germany by Toni Clark practical scale GmbH.
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.
Specifications:
Displacement: 240 cc
Bore: 44 mm
Stroke: 38 mm
Weight incl. prop bolts: 7,450 g
Weight with ignition: 7,800 g
Weight with starter motor: 4,930 g
Weight with ignition and starter motor: 8,280 g
RPM range: 600 - 7,000 1/min
Fuel: 1:50