Thunder Tiger 9604 PRO .39H Ringed

Thunder Tiger 9604 PRO .39H Ringed

This is the Pro .39H Ringed Two Stroke Helicopter Engine from Thunder Tiger.

Features

• Thunder Tiger 9604 PRO .39H Ringed

• Fits all popular 30 size helicopters with gear ratios between 9.1:1 to 9.8:1

• Developes peak horsepower at 16,000-18,000RPM

• Crankshaft supported by two ball bearings

• Lightened hypereutectic machined Al-Si ringed piston

• Two-needle air-bleed carburetor

• XC2 (extreme composite) cylinder liner coating with a criss-cross pattern etched on the sleeve wall

• Rear reinforced resin cage ball bearing support

• Three year limited warranty through Hobby Services beginning at date of purchase

Specifications

• Displacement: .394cu in (6.45cc)

• Bore: 0.850" (21.6mm)

• Stroke: 0.693" (17.6mm)

• Practical R.P.M.: 2,000-17,000

• Output: 1.35 BHP/16,000 RPM

• Weight: 10.23oz (290g)

• Carburetor Settings*;
  Needle Valve: Three turns from closed position

• Mixture Metering Screw: 30-45� degrees clockwise

• *Carburetor was preset at factory and requires only small adjustments

• Distance/top of cylinder head-bottom of mounting tabs: 2.4" (61.mm)

• Distance/top of cylinder head-bottom of crankcase: 3.03" (77mm)

• Distance between mounting holes same side: 0.60" (15mm)

• Distance between mounting holes opposite side: 1.9" (48mm)

• Cylinder head width: 1.7" (44.6mm)

• Width at mounting tabs: 1.8" (45mm)

• Width of crankcase below mounting tabs: 1.2" (31.1mm)

• Center of engine to front bearing: 1.81" (46.1mm)

• Backplate to front bearing: 2.6" (67.6mm)

Package Contents

• Pro .39H Helicopter Engine with 1.5, 2.5 & 3mm hex wrenches, decal sheet and instruction manual

Requirements

• Fuel: Heli blend with 5-30% nitromethane and 20% lubricant content

• Glow Plug: Long type such as the OS #8

• Glow starter, plug wrench and field equipment

Comments

• N/A.