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Your position: Home > Engine
Engine

O.S. Engines OS Engines 12660 25Fx ABL 20D 892 Engine

Item Code: 1095
Sold: 0
Price:
AED
AED550.00
SKU:
1095
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Units 5 in Stock
  • Description
Specifications

Product details

  • Product Dimensions: 15.9 x 12.4 x 9.9 cm
  • Shipping Weight: 227 g
  • Item model number: OSMG0525
Features:

Remote Needle Attached to the Backplate keeps fingers away from prop
Twin Ball Bearing-Supported Crankshaft
Schnuerle Porting (Schnuerle scavenging)
Advanced Bi-Metallic Liner. This process uses a double layer of plating material rather than one thicker layer. This helps the metal to bond to the cylinder and is more durable. Also the plating process is more consistent resulting in a more precise fit between piston and sleeve for better compression longer life.
Side Exhaust
One-Piece Crankcase
Includes:

One Expansion Style Muffler
One Set of Instructions Decal and Poster
One Assembled .25 FX w/Carb
Requires:

Long Glow Plug (O.S. #8 recommended-OSMG2691)
Fuel with 18% (minimum) lubricant content and 5%-15% Nitromethane (All 5%-15% fuels we carry meet these requirements)
Specs:

Displacement: 4.07cc (.2485 cu in)
Bore: 18mm (.708")
Stroke: 16mm (.630")
Horsepower: .84 BHP at 18000 RPM
Weight: 248g (8.8oz) 10.8oz w/muffler
Length: 75.6mm (2.98") distance from the backplate to drive washer
Width: 30mm(1.18") width of engine neglecting engine mounting flanges 38mm (1.50") distance between centers of the mounting holes
Height: 75.5mm (2.97")
Crankshaft Thread Size: 1:4-28
Recommended Props: Pattern Flying: 9x5 9x6 Pattern Flying if a tuned pipe is used: 9.5x5 Sport Flying: 9x5 9x6 9.5x5 10x4 10x5
Practical RPM Range: 2500 - 19000 RPM
High Speed Needle: 1.5 - 2 turns out from fully closed
Low Speed Needle: 2mm gap between the needle and spray bar at full throttle (looking down the neck of the carb)
 
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