Hyperion Zs4020 and Zs4025 Series Outrunners

Click Here to see All Zs40 Motors
Click here to see Zs4035 and Zs4045 Datasheet
  • Made of the finest materials
  • Extreme efficiency & power output
  • Longest life
  • Highest value

The new Hyperion Zs motor series cost more than "budget" brands, but provide much more value in the short run - and over the years.  Simply put, everything inside and out is the very best obtainable.  Japanese 0.2mm stator steel and NMB bearings, 200C magnets and coil wire (hand-wound), and precision all-CNC construction;  All these lay the foundation on which two years of intensive design and testing have delivered the highest efficiency motors ever produced.  And stringent ISO 9001 Quality Control - plus extra care such as magnet temperature batch testing - insure your maximum satisfaction, both present and future.

The Zs40 series replace our previous Z40 series airplane motors.  While the Z series remain fine motors and still compete with every other high-quality brand in the market, the new Zs simply blow away the competition on performance.  On average, when the a Zs motor is configured to turn the same prop at the same rpm as the "Z", it will consume 13% to 18% less power from the battery, due to large gains in efficiency.  This allows you to use a smaller-capacity Hyperion G3 LiPo pack to achieve the lowest possible flying weight. Or you can fly much longer on the same size pack and have that pack last longer, due to reduced stress on the battery.  Alternatively, you may choose to "push" the Zs series motors much harder, as they can handle more power without overheating - due to both their increased efficiency and also construction using the highest-temp-rated magnets and coil wire available.

The Zs40 come with an extensive hardware package containing:  4.0mm Female gold connectors and shrink tube (to match male plugs preinstalled on motor wires), prop adapter,  Cross-piece with M4 blind nuts and matching bolts for firewall installation.  Note that the Zs40 series are "backmount only" (a.k.a. radial mount), as large outrunners cannot be reliably front-mounted in most models.


ZS4020 and ZS4025 Series - Technical Specifications and Suggestions
(see also ZS4035 and ZS4045)
4020-08 4020-12 4025-10 4025-14 4025-16
Weight 304 g 304 g 416 g 416 g 416 g
Winding 8T 12T 10T 14T 14T
Magnet Count 14 14 14 14 14
Resistance 0.008 Ohm 0.016 Ohm 0.014 Ohm 0.024 Ohm 0.034 Ohm
IO (@10V) 2.28 A 1.4 A 2.85 A 2.19 A 1.89A
KV 777 rpm/V 543 rpm/V 505 rpm/V 370 rpm/V 320 rpm/V
Typical Current 60A~95A 45A~85A 50A~90A 45A~80A 45A~75A
Max Current 140A 95A 110A 90A 80A
Max Power 1800 Watts 1800 Watts 2200 Watts 2100 Watts 2100 Watts
LiPo Range 3S~6S (4/5) 3S~7S (4/5) 3S~7S (5/6) 4S~8S (5/6) 5S~10S (6/8)
G3 LiPo Light VX 4200 VX 4200 VX 4200 VX 4200 VX 4200
G3 LiPo Duration VX 5400 VX 5400 VX 5400 VX 5400 VX 5400
Atlas ESC Suggested 90A~180A 60A~90A 90A~120A 90A~120A 90A
Replaces "Z" 4020/4025 4020/4025 4025/4035 4025/4035 4025/4035


Tech Notes

  • Typical Current (A) - These indicate the usual range of amperage for the typical model in which the motor is used.  This range will provide very high average efficiency, and should be safe under a wide range of conditions (summer/winter) and model setups assuming adequate cooling airflow exists.
  • Max Current (A) - These specs are for general guidance only and for <10 seconds continuous.  Conditions particular to your situation - such as ambient temperature, number of cells (S) in series, airflow available to the motor, etc... - can have a profound impact on the max current you are able to safely draw from the motor.  You may be able to safely exceed these specs, or not, depending on those factors.  It is YOUR responsibility to check motor temperature after 10 seconds runtime and again after a short flight.  If the motor feels very uncomfortable to a quick touch (or exceeds 80C measured) you should reduce propeller size or pitch.  While the ZS motors can sustain higher temperatures, a properly setup model should  usually obtain tremendous performance without exceeding 80C.  We strongly recommend use of the Hyperion Emeter II, which measures voltage,  amperage, watts, temperatures, rpm and more.  This empowers you to optimize your power system performance, and insure that it will stay reliable.
  • Max Power (Watts):  The same cautions as above with Max Current apply.  Check temperatures to determine proper combination of battery and propeller. These figures are not intended to be a hard limit but reflect typical limits in normal models.  If you exceed these, the model must be carefully set up for proper cooling and well-monitored for over-temp conditions.
  • LiPo Range (S):  This indicates the range of LiPo pack "S" that may be used with the motors, such as "3S~7S" for 4020-12.  In this case packs higher than 7S should not be used, as it exceeds the target rpm for efficient use of the motor.  The numbers like "(4/5)" indicate that this motor is most often used with 4S/5S packs.
  • G3 Lipo Light/Duration - We hope you'll use Hyperion Generation 3 (G3) Lithium Polymer packs to power your Zs motors.  They provide the highest possible performance, long life, and can be charged in as few as 10 minutes.  The "light" suggestions suit models which need the lowest possible flying weight, such as 3D aerobatic models.  The "Duration" picks allow longer flights, or multiple flights per charge, and are common for the average sport model.  Note that "in-between" sizes may give an ideal blend.  For example, ZS4020-14 motor may use the CX VX (35C) 3300 for 3D max power/weight, or CX (25C) 5000 for Duration, but you might also choose something like CX 4000 as an ideal "middle" choice for your particular model.
  • Atlas ESC Suggested - Hyperion ATLAS series speed controllers will be available worldwide by June 1st 2009.  They feature the best of hardware components for lowest internal resistance and high efficiency - as well as new firmware with extremely sophisticated motor drivers for best performance.  Suggested ESC are typical for each motor, but you may choose a higher-rated ESC (i.e. 35A rather than 25A) as you wish.
  • Replaces "Z" - Hyperion ARF model airplanes produced until recently will show recommendations for the previous "Z" series motors.  This shows you the appropriate substitution for each of the new Zs series motors.  Note that the ZS40 series - due to their high efficiency - can often be "one sized down" compared to a "Z" series motor which was originally recommended.  Do keep in mind that CG should be checked with a weight equal to the Zs motor you are considering, to be sure that balance can be achieved with the lighter motor.