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12670 O.S. 25AX ABL w/Muffler

$ 3,230.00

This is the O.S. .25AX ABL Model Airplane Engine with E-3080 Muffler.
Ideally suited to a variety of R/C aircraft including trainer, sport types.

FEATURES

Same mounting dimensions as previous O.S. .25 size engines
Advanced Bi-Metallic Liner. This process uses a double layer of  plating material rather than one thick 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. Newly designed E-3080 Power Box muffler generates mild and pleasant sound and is constructed with an O-ring between the front rear body to prevent oil leaking and is fully positionable 21L carburetor with needle valve angled toward rear of engine for safer adjustments.

Ball bearing-supported crankshaft
Two-year limited warranty

INCLUDES

One O.S. .25AX ABL BB model airplane engine with muffler, #8 glow plug, two 3x28mm cap head muffler screws, needle valve extension cable, warranty sheet, decal sheet and illustrated instruction manual.

 

REQUIRES: Fuel containing 5%-20% nitromethane with at least 16% lubricant

SPECS

Displacement: 0.248 cu in (4.07cc)
Bore: 0.709″ (18mm)
Stroke: 0.630″ (16.0mm)
Practical RPM: 2,500-17,000
Output: 0.8 ps @ 15,000 RPM
Weight: 12.6oz (357g) with muffler
Recommended Propellers: 9×5, 9×6, 9.5×5, 10×5
Crankshaft Size: 1/4-28

Distance from center of engine to drive hub: 2.1″ (53mm)
Distance from center of engine to end of crankshaft: 3.1″ (77mm)
Distance/crankshaft center to muffler exhaust outlet:
Height from crankcase bottom to top of cylinder head:
Height/mounting tab to top of cylinder head:
Width including mounting tabs: 1.8″ (45mm)
Crankcase width below mounting tabs: 1.2″ (30.6mm)
Width between mounting holes same side: 0.59″ (15mm)
Width between mounting holes opposite side: 1.5″ (38mm)
Diameter of muffler body: 1.2″ (32mm)

Needle Settings: High Speed: 2 turns out from fully closed
Low Speed:  Flush with carb body then 1/2 turn

 

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