55HZ-H Hyper Ringed .55 Helicopter Engine

Small in size — delivers big 3D power!

The 55HZ-H Hyper Ringed from O.S. has the power and reliability to make your heli do virtually whatever you want! Capable of installing in the same space as the 50SX-H Hyper, it features a brand-new, 3-needle 40L carb, a four-arm throttle lever for easy servo adjustments and more.

• Installs in the same space as the 50SX-Hyper
• A brand-new, 3-needle 40L carb
• New porting
• A four-arm throttle lever for easy servo adjustments
• Durable, corrosion-proof bearings

Product Specifications:

• Bore: 0.91 in (23 mm)
• Carb Type: O.S. 40L 3-needle rotary
• Crankshaft Threads: UNF1/4-28
• Crankshaft Type: Threaded
• Cylinders: Single
• Displacement: 0.55 cu in (8.93 cc)
• Power Type: Glow
• HP: 2.1PS, 2.07 HP @ 17,000rpm
• Product Height: 3.6 in (90.9 mm)
• Product Length: 3.0" (76.6mm) from backplate to front bearing
• Product Width: 2.0 in (52 mm) at mounting tabs
• Recommended Fuel: 10-30% nitro content, at least 18% lubricant content (heli blend)
• RPM Range: 2,000 - 17,000 rpm
• Stroke: 0.85 in (23.5 mm)
• Total Weight: 14.40 oz (408 g)