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12352 O.S. 25LA ABN w/Muffler

$ 1,590.00

This is the the O.S. Max .25LA Aircraft Engine with Muffler. Meets Requirments of Beginners and Sport Flyers.

*** TWO YEAR LIMITED WARRANTY ***

FEATURES

One-piece natural finish crankcase
Two bronze crankshaft bushings (sometimes called Oilite bearings)
Schnuerle porting (Schnuerle scavenging)
Side exhaust
Nylon backplate
#20H carb with remote needle valve assembly

INCLUDES

Expansion-Style Muffler #E-2030
.25LA Engine w/Carb and A3 glow plug
Instructions, mount template, decal sheet
Two 3x27mm screws to bolt muffler to engine

REQUIRES

Glow Fuel with 5-15% Nitromethane and 20% (minimum) lubricant content
Glow starter, plug wrench and field equipment.

SPECS

Construction: Aluminum 1-piece crankcase, piston, cylinder head, crankshaft, connecting rod, and crankshaft. Chrome-plated Brass cylinder.

Displacement: 4.07cc (0.249 cu. in.)
Bore:       18.0mm (.709″)
Stroke:     16.0mm (.630″)
Horsepower: 0.6 PS, 0.59 HP at 15,000 RPM
Weight: 7.0oz w/o muffler (9.5oz w/ muffler)
Length: 67.5mm (2.65″) distance/backplate to front of drive washer
89.5mm (3.52″) distance from backplate to prop adapter
Width: 29mm (1.14″) width of engine neglecting mounting flanges
Distance Between Mounting Holes Same Side: 14.4mm (.56″)
Distance Between Mounting Holes Opposite Side: 33mm  (1.29″)
Height: 74.5mm (2.93″) from bottom of mount tab/top of cylinder head
Crankshaft Thread Size: 1/4-28
Recommended Props: Break In: 9×5
Trainer and Sport Models: 9×5, 9×6
Practical RPM Range: 2,500 – 16,000 RPM

High Speed Needle: 1.5 turns out from fully closed
Low Speed Needle:  Tip of the needle half way across the small hole  in the FRONT of the carb body.

 

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