View Full Version : SOLD: O.S. Engine 50 SX-H Hyper -- 2 engines (one spare) and align muffler trex 600

10-14-2010, 06:50 PM
Up for sale is a like new OS 50 SX-H Hyper engine - im also including a spare! (the spare needs a piston and sleeve).

Comes with the Align 50 High Performance Muffler Pipe for the trex 600 nitro pro and quickUK aluminum gaskets.

total retail for this stuff is over $470.. asking $200 shipped. thats just the price of a single new engine.

Check retail prices here -



Engine specs -
FEATURES: Ideal for use in any 50 class helicopter
New head design offers improved combustion efficiency for stable
hovering and aerobatic flight
Large 0.39" (10mm) diameter carburetor intake for greater running
Two year limited warranty
Same mounting dimensions as the O.S. Max .46FX-H

INCLUDES: One O.S. Max .50 SX-H Helicopter Engine with Hyper Cooling Head, 60LH
carburetor (OSMG2469), decal sheet, #8 glow plug, instruction manual

REQUIRES: 10% to 30% nitro Fuel with at least 18% lubricant (Helicopter Mix)
Starting equipment

SPECS: Output: 1.9ps/17,000 RPM
Practical RPM Range: 2,000-20,000 RPM
Displacement: 0.499 cid (8.0cc)
Bore: 0.866in. (21.99mm)
Stroke: 0.847in. (21.51mm)
Weight: 14.33oz (405.4g)

Distance/top of cylinder head-bottom of mounting ears: 2.9" (74mm)
Distance between mounting holes same side: 0.68" (17.5mm)
Distance between mounting holes opposite side: 1.73" (44mm)
Distance between muffler mounting holes: 1.4" (37mm)
Length of cylinder head: 2.1" (54mm)
Width of cylinder head: 1.8" (47mm)
Distance/bottom of crankcase to top of cylinder head: 3.6" (92.3mm)
Distance from center of engine to front bearing: 2.0" (51.6mm)
Distance from center of engine to backplate bolt: 1" (25mm)
Distance from center of engine to throttle lever: 1.5" (38mm)