.91RZ-H Rear Exhaust Ring 60M-C Carb
Product Number: OSM18500
Manufacturer: O.S. Engines
Availability:Discontinued, no longer available for purchase
List Price:$599.99
Price:$352.79
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Discontinued, no longer available for purchase
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  • Product Information

This is the O.S. Max .91 RZ-H Rear Exhaust Helicopter Engine.:

Product Features
  • Aluminum cylinder head, anodized blue in color.:
  • Designed for Hirobo and other scale helicopters where engine must fi inside canopy to preserve heli's scale lines.:
  • Ringed piston.:
  • 60M-C 3-needle carburetor with mid-range needle for precis adjustments.:
  • Two year warranty.:
Product Specifications
  • Needle Settings:
  • High Speed Needle Valve: Two turns OPEN from fully closed:
  • Idle Mixture Control Screw: Factory setting:
  • Medium Speed Needle Valve: Two turns OPEN from fully closed:
  • Displacement: 0.912 cid (14.95 cc) Bore: 1.091 (27.7mm) Stroke: 0.976 (24.8mm) Practical RPM: 2000-16,000 Power Output: 3.3 PS, 3.25 HP @ 15,000 RPM Weight: 21.8oz (618g) Crankshaft Size: 5/16-24 Distance Between Mounting Holes Same Side: 0.98 (25mm) Distance Between Mounting Holes Opposite Side: 2 (52mm) Distance From Back Plate to Front Bearing: 3.3 (83.8mm) Distance From Back Plate to Crancase Center: 1.1 (27.4mm) Distance From Crankcase Center to Front Bearing: 2.2 (56.4mm) Distance From Crankcase Center to End of Crankshaft: 3.5 (88.7mm) Width at Mounting Tabs: 2.4 (61mm) Width of Crankcase Below Mounting Tabs: 1.7 (42.6mm) Distance from Throttle Lever to Center of Crankcase: 1.7 (42.5mm) Distance/Bottom of Mounting Tab/Top of Cylinder Head: 3.4 (87.4mm)
What's Included
  • O.S. Max .91 RZ-H Rear Exhaust Helicopter Engine with #8 glow plug,:
  • instruction manual:
Required
  • Fuel: Heli blend with 10-30% nitro content:
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