Kolm BX-155-2

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
Walbro carburetor HDA-48B
Engine length adjustable by longer and shorter optional prop hubs

The BX-155V3-2 is without a doubt the flat twin for glider towing up to 25 kilos (55 lbs) in weight and for aerobatic models. Even a small silencer makes the BX-155V3-2 an absolutely whispering power unit. With the optional brushless electric starter you have a power unit that leaves nothing more to wish for.

The BX-155V3-2 has been developed from the BX-135-2 by replacing the steel cylinder sleeves with Nickel-Silicon plated aluminum cylinders. Replacing the steel cylinders with Nickel-Silicon plating on the original aluminum cylinders enlarged the bore and has resulted in an increased capacity and, of course, more power with less weight.

Hans Kolm developed the BX-155V3-2 especially for competition glider towing, he tested the engine in a series of models. The result is an extraordinarily reliable engine for your valuable model.

Specifications:

Displacement: 155 cc
Bore: 47 mm
Stroke: 44 mm
Weight incl. prop bolts: 4,350 g
Weight with ignition: 4,490 g
Weight with starter motor: 4,900 g
Weight with ignition and starter motor: 5,040 g
RPM range: 600 - 7,000 1/min
Fuel: 1:50
Product weight: 4,49 Kg