Chapter 5: Pinion Selection & Rpm - Oxy Heli OXY4-MAX Edition 380 Instruction Manual

OXY 4 MAX - FLY STYLE / HEAD / TAIL SETTINGS
In order to choose the best setup for your OXY4 MAX, and optimize performance, it is important to know some basic information:
1- The Motor Kv - See your motor specifications.
2- Battery Pack - (3/4S or 6S)
3- Your target head speed, If you use a head speed calculator, use 110 Teeth for the main gear and one of the available pinions.
Or use this simple formula:
If you use governor, in order to assure that RPM will be constant during the fly, set a gear ratio to have theoric Max RPM approx 10% higher than your expected governed RPM. Your TX Throttle value should be set
between 75 to 85%
Example: Target RPM Governed at 80% throttle value = 3500, the theoric Max RPM should be approx. 3850.
This formula and value can be effected by many factors such: Battery quality, Battery C Rate, Motor Power and Fly Style. In any case can give you basic information choosing your Motor KV and Pinion (Gear Ratio).
Table below will give you basic suggestion about RPM and Tail Setting (tail pulley / tail ratio) in order to guide on your OXY4 MAX Fly Style needs.
OXY 4 MAX - ELECTRONICS AND POWER SUGGESTIONS
Head Speed Note: Although OXY 4 MAX can handle very high Head Speed, we suggest not to exceed 4000 RPM to maintain a good compromise between performances
and efficiency. Our Test confirmed that OXY4 MAX can perform form 2000 up to 4000 RPM, for more information about your personal Fly Style need and relative Head and
Tail Settings, see above Info and Table: "Fly Style - Head - Tail Settings"
CONFIGURATION EXAMPLES:
Since the OXY 4 MAX is a high performance 3D RC helicopter, we suggest using high quality electronics and power components including Servos, FBL , Motor, Battery and ESC.
Remember that OXY 4 MAX is a 380 RC Heli - use light components to maximize flight time and performance. Always consider the acceleration G force in fly, few extra gram can
become Kg during some maneuvers, compromising the best performance. Always choose the electronics and the power system suitable for your fly style, "more is not always better"!
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Chapter 5: Pinion Selection & RPM