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OS Max 55HZ Hyper Ref: 1481
The max 50SX-H Hyper has established an enviable reputation for power, reliability and ease of use. The Max 55HZ Hyper moves that to a whole new level!
Designed primarily with the demands of the 3D pilot in mind, the 55HZ Hyper delivers 61 size performance in a 46 size crankcase. That power comes from the extensive experience that OS has gained over many years and working extensively with the worlds top pilots to refine all aspects of the engine without compromise in any area.
By using the same mounting layout, you can drop a 55HZ into any model that previously suited the 50SX-H without modification. Just the area around the new carburettor is a little bigger and may require adjustmenst to the cooling shroud.
This entirely new engine shares almost nothing with the 50SX-H and has some new features not seen on an engine of this size before. The rear bearing is now designed to resist corrosion, the new 40L carburettor has three adjustments to cater for idle, mid range and full power. Until now, these features were the domain of 61 class engines or bigger. The throttle arm has four leaves so that push pull control is easy from any direction. The heatsink head is bigger for improved cooling as well.
Price: £182.50 (£214.44 Including VAT at 17.5%)
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OS91HZ Ring Ref: 1868
The new engine from OS.
Designed expressly for the F3C & 3D competition. Improved hovering stability as well as power at high speed to meet the further sophisticated F3C competition manouevres New design piston and crankshaft reduces vibration to provide further, stable torque over the entire RPM range. The rectangular heatsink head is completely included in the cooling shroud for better cooling in a fully enclosed body. Black alumite finish with O.S. and 91HZ logos impart a distinctive image. Integral back plate heatsink improves crankcase cooling. A Thermo insulator is installed on the carburetor mounting spigot helps shut out engine heat to the carburettor, which in turn ensures a stable fuel/air mixture. Needle Control Lever with O.S. Engines logo is supplied with the engine as standard for the CSM carbsmart.
Price: £221.27 (£259.99 Including VAT at 17.5%)
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OS91HZ PS ring Ref: 1829
Designed primarily for the 3D flight and dramatic aerobatic manouevres. Compared to the old 'Hyper' the new 91HZ-PS offers improved hovering stability as well as power at high speed to meet the further sophisticated 3D competition manouevres. A new design piston and crankshaft reduces vibration to provide further, stable torque over the entire RPM range. The rectangular heatsink head is completely included in the cooling shroud for better cooling. The black alumite finish with O.S. and 91HZ-PS logo impart a distinctive image. A Thermo insulator is installed on the carburetor mounting spigot and helps shut out engine heat to the carburettor, which in turn ensures a stable fuel/air mixture. The 91HZ-PS is equipped with a new, bigger capacity PD-08 pump and matched 61B-P carburettor plus integral regulator, which assures a consistent fuel supply irrespective of violent changes in model attitude.
Combined with O.S. pump system, internal parts improvements same as the 91HZ contribute to stable power output and smoother higher engine performance.
Price: £243.47 (£286.08 Including VAT at 17.5%)
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OS 70 SZH Ref: 125
Price: £178.22 (£209.41 Including VAT at 17.5%)
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0S50SX-H HYPER Ref: 643
more info
Price: £145.25 (£170.67 Including VAT at 17.5%)
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OS37 SZ-H Ref: 642
MORE INFO
Price: £113.04 (£132.82 Including VAT at 17.5%)
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OS.91HZ-R Ringed Helicopter Engine Ref: 3890
OS.91HZ-R Ringed Helicopter EngineBased on the multi-time FAI world champion 91HZ heli engines, O.S. is taking their new 91HZ-R to even higher levels of performance; thanks to the new "on demand" regulator system. Designed specifically for this engine, this system guarantees the steady fuel supply, needed for the most-demanding of 3D flights with constant, vigorous attitude and throttle changes. The 91HZ-R also performs well as an F3C powerhouse providing a steady, smooth run and exacting mixture controls.
Price: £280.84 (£329.99 Including VAT at 17.5%)
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OS 91 SX-H C spec PS with Viper head Ref: 1595
Price: £255.31 (£299.99 Including VAT at 17.5%)
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High specification motor from OS
Twin Plug Viper head already fitted
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OS 91SX-HC. spec Viper Ref: 1594
the new Cspec with Twin Plug VIPER head
Price: £234.03 (£274.99 Including VAT at 17.5%)
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OS 91FX HGL Rev Ref: 96
Price: £148.94 (£175.00 Including VAT at 17.5%)
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Reverse Rotation Engine for Henseleit 3DNT
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