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Old Mar 24, 2012, 10:43 AM
Registered User
Joined Sep 2003
94 Posts
Trader Rating: 29
Sold
New Unused OS Max 91 FX 2 Stroke Engine

New Unused OS Max 91 FX 2 Stroke Engine
This is a new in box never mounted, fueled fueled or run OS Max 91 FX 2 stroke glow model airplane engine.

Includes box, instructions, muffler, and tools as supplied by OS Max.

$175 plus $15 shipping.
Thanks
Dan


Features One-piece crankcase
Twin ball bearing-supported crankshaft
Schnuerle porting (AKA Schnuerle scavenging)
Aluminum piston, steel cylinder liner and iron piston ring
Side exhaust with muffler with rotatable exhaust outlet
Carburetor with remote needle mounted on the engine back plate
(to keep fingers away from the spinning propeller).
Two-year warranty


Specifications for O.S. 91FX

Displacement: 14.95cc (0.912 cu in)
RPM range: 2,000 - 16,000
Bore: 27.7mm (1.090")
Stroke: 24.8mm (0.976")
Compression Ratio: 10.1 : 1
Weight: 550g (19.42oz) 24.3oz w/muffler
Horsepower: 2.8 BHP at 15,000 RPM
Props: Hobby Services recommends
a 13x8 or 13x9 or 14x6 or 14x8
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Last edited by DPage; Mar 30, 2012 at 06:58 PM.
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Old Apr 02, 2012, 09:07 PM
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Joined Jul 2011
2 Posts
Trader Rating: 0
Os 91fx

Still available ?
Toolmaker1045
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Old Apr 02, 2012, 09:13 PM
Registered User
Joined Sep 2003
94 Posts
Trader Rating: 29
Yes, PM sent
Thanks
Dan
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Old Apr 03, 2012, 07:03 AM
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USA, PA, Lancaster
Joined Jun 2007
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still for sale?
tigerman1020 is offline Find More Posts by tigerman1020
Old Apr 03, 2012, 03:16 PM
Registered User
Joined Sep 2003
94 Posts
Trader Rating: 29
Yes, PM sent
Thanks
Dan
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