MOTOR TT .28 PRO28BD-R 9473

This is the Thunder Tiger Pro .28BD-R 2-Stroke Model Car Engine with Pull Starter.

FEATURES:

• Rear exhaust
• D-type recoil starter with built-in 6mm hexagonal coupler for use with electric starters
• CNC machined components
• ABC piston and sleeve "A"luminum piston, "B"rass cylinder liner that is "C"hrome plated
• Schnuerle porting
• Hyperutectic machined Al-Si ringed piston
• Dual ball bearing-supported SG crankshaft
• Three needle slide valve carburetor
• Three year limited warranty through Hobby Services beginning at date of purchase

INCLUDES:

• Thunder Tiger Pro .28BD-R Model Car Engine with Pull Starter carburetor
• exhaust gasket
• decals
• instruction manual

REQUIRES:

• Fuel: 20% lubricant and 10-30% nitro content, synthetic/castor blend lubricant recommended (do not use more than 10% nitro content for break in)
• Glow Plug: Long type recommended such as the OS #8
• Glow starter, plug wrench and field equipment

SPECS:

• Displacement: 0.282 cu in (4.63cc)
• Bore: 0.720" (18.3mm)
• Stroke: 0.693" (17.6mm)
• Practical RPM: 3,000 - 35,000
• Output: 2.40 HP @ 30,000 rpm
• Carburetor Settings-NOTE carburetor is preset from the factory and requires only small adjustments
• Needle Valve: 3 - 3-1/2 turns counterclockwise from closed
• Mixture Metering Screw: After setting needle valve, 1/8 turn clockwise if mixture is too rich or 1/8 turn counter-clockwise if mixture is too lean

• Height from Mounting Tab Bottom/Top of Cylinder Head: 3.7" (94.5mm)
• Height from Crankcase Bottom to Top of Cylinder Head: 4.2" (108mm)
• Width at Mounting Tabs: 1.8" (45.4mm)
• Width of Crankcase below Mounting Tabs: 1.2" (31mm)
• Center of Mounting Holes Same Side: 0.83" (21mm)
• Center of Mounting Holes Opposite Side: 1.4" (36.9mm)
• Center of Crankcase to Front Bearing: 1.8" (45.9mm)
• Distance from Backplate to Front Bearing: 3.4" (86mm)
• Distance from end of Coupler to Front Bearing: 5.3" (135mm)

COMMENTS:

• Some notes on rotary and slide valve carburetors;
• Rotary carbs offer a larger response in the middle of the power band.
• This works well for off-road applications when throttle response must be varied.
• Slide Valve carbs provide greater response at the beginning and end of the power band. This works well for on-road and racing applications for fast take-offs and high speed.