OS Motors .50SX-H Hyper Ring 60LH Carb

This is the O.S. Max .50 SX-H Ring Active Helicopter Engine with
Active Cooling Head and 60LH Carburetor.

FEATURES:
Suitable for use in any 50 class helicopter
New head design uses improved combustion performance for steady
    hovering and aerobatic flight
Big 0.39" (10mm) diameter carburetor intake for higher running
    stability
2 year minimal service warranty
Same mounting measurements as the O.S. Max .46FX-H

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

NEEDS:
10% to 30% nitro Fuel with a minimum of 18% lubricant (Helicopter Mix)
Starting devices

SPECS:
Output: 1.9 PS, 1.87 HP/17,000 RPM
Practical RPM Variety: 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 exact 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)

Needle Settings: High Speed: 1.5 ends up from completely closed
Mix Control (low speed): imprint on screw
head straight vertical (up and down)
updated carbohydrate details tjt 020305