ZAP 900x250

Thunder Tiger RL-53H Ringed Redline Engine

Thunder Tiger RL-53H Ringed Redline Engine

The Thunder Tiger RL-53H Ringed Redline Series Two-Stroke Helicopter Engine (Tower Hobbies stock number L5AHTG02) features CNC construction with a low profile cylinder head which is anodized a bright red. The two-needle carburetor uses a push/pull throttle lever and a heat insulator between the carb and the engine case for consistent performance under demanding flight conditions and cowl enclosures. A ringed piston runs in a composite cylinder liner coating, together with a criss-cross pattern etched on the sleeve wall, with a knife-edged high-strength connecting rod and reinforced resin rear cage ball bearing support for ultra-high performance. Supplied with a  Redline R3 glowplug with platinum alloy filament,  two head shims and an instruction manual, it’s designed to run with heli blend fuels with 10-30% nitromethane and 20% lubricant.

Technical Specs
Displacement: 0.529 cu in (8.27 cc)
Bore: 0.886″ (22.5mm)
Stroke: 0.858″ (21.8mm)
Practical RPM: 2,000 – 21,000
Output: 2.1 BHP/17,000 RPM
Weight: 13.40oz (380g)
Carburetor Settings;
Needle Valve: Three turns from closed position
Mixture Metering Screw: 1/12 – 1/8 turn counter-clockwise

Updated: July 8, 2015 — 5:03 PM

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