O.S. 55 HZ-H Hyper Ringed Competition Helicopter Engine
About this part
This is the O.S. 55HZ Hyper Ringed Helicopter Engine with the 40L Carburetor. The O. S. 55HZ-H Hyper Ringed Heli engine is cause to rejoice for 3D heli flyers! The 55-HZ-H Hyper Ringed engine cranks out optimum power with a minimum of space!
- Ideal for 3D flight-power equal to .60 size heli engines
- Same mounting bolt pattern and silencer size as the OS 50SX-H Hyper
- Dual needle 40L carburetor with four arm throttle lever for use with a variety of servo brands
- Two year limited warranty through manufacturer beginning at the date of purchase
SPECIFICATIONS:
- Displacement: 0.55 cu in (8.93 cc)
- Bore: 0.91 in (23 mm)
- Stroke: 0.85 in (23.5 mm)
- Practical rpm: 2,000-17,000
- Weight: 14.39 oz (408 g)
CA Residents Prop 65 Warning
WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...Reviews4.5 · 4 reviews
this new 55 engine from OS is by far more powerful than the 50 hyper. 13.5 degrees pitch no worries. easy to tune runs very smooth with power to spare. all you 50 sized 3D addicts need to try this one for yourself to see what real power is all about! I have two outrage velocity 50's with this motor and also installed a flybarless system from Skukum and i can no longer bog the head. This motor seems to make its best power around 16500 rpm. i highly recommend a good quality tuned pipe to compliment this engines power curve.
ALL I CAN SAY IS THIS MOTORS HAS LOTS OF POWER IN MY JS 50 3D UPGRADED FROM HYPER 50 12 DEGREES PITCH CLIMBS LIKE A ROCKET ITS WORTH EVERY PENNY!
A lot of power more power than hyper 50, but bearings don't last very long.
Input it in the helicopter, 4 clicks later I was flying.. best glow engine I've ever used. I highly recommend it. I am using it on a align 600.
Reviewers generally praise the O.S. 55 HZ-H for substantially more power than the Hyper 50, with mentions of strong climb at 12 to 13.5 degrees pitch and smooth running that is easy to tune. One reviewer notes best power around 16500 rpm and recommends a quality tuned pipe. Installation in a 50-size helicopter and an Align 600 is described as straightforward. One reviewer reports that bearings do not last long, which is the main recurring problem raised. Ratings are high overall, with one 3/5 rating tied to bearing life. The sample is small, and most reviews are from verified owners.
- + Significantly more power than Hyper 50
- + Strong climb at high pitch
- + Smooth running and easy to tune
- + Easy setup and starting
- − Bearings reported to wear out quickly
- − Small number of reviews