Equivalent to a 15-size glow engine for sport and scale airplanes weighing 36–56 oz (1020–1590 g)
Ideal for 3D airplanes weighing 32–40 oz (910–1135 g)
Ideal for models requiring up to 575 watts of power
High-torque, direct-drive alternative to inrunner brushless motors
Includes mount, prop adapters and mounting hardware
External rotor design—5mm shaft can easily be reversed for alternative motor installations
Slotted 14-pole outrunner design
High-quality construction with ball bearings and hardened steel shaft
Quiet, lightweight operation
Needed To Complete
40A–45A brushless ESC
8-to 12-cells Ni-MH/Ni-Cd or 3–4S Li-Po
10x6 to 13x6.5 electric prop
The Power 15 is designed to deliver clean and quiet power for 15-size sport and scale airplanes weighing 36 to 56 ounces (1020 to 1590 grams), 3D airplanes weighing 32 to 40 ounces (910 to 1135 grams), or models requiring up to 575 watts of power.
Bearings or Bushings:
One 5 x 14 x 5mm Bearing and One 5 x 11 x 5mm Bearings
1. Power can be measured in watts. For example: 1 horsepower = 746 watts 2. You determine watts by multiplying ‘volts’ times ‘amps’. Example: 10 volts x 10 amps = 100 watts
Volts x Amps = Watts
3. You can determine the power requirements of a model based on the ‘Input Watts Per Pound’ guidelines found below, using the flying weight of the model (with battery):
• 50-70 watts per pound; Minimum level of power for decent performance, good for lightly loaded slow flyer and park flyer models • 70-90 watts per pound; Trainer and slow flying scale models • 90-110 watts per pound; Sport aerobatic and fast flying scale models • 110-130 watts per pound; Advanced aerobatic and high-speed models • 130-150 watts per pound; Lightly loaded 3D models and ducted fans • 150-200+ watts per pound; Unlimited performance 3D and aerobatic models
NOTE: These guidelines were developed based upon the typical parameters of our E-flite motors. These guidelines may vary depending on other motors and factors such as efficiency and prop size.
4. Determine the Input Watts Per Pound required to achieve the desired level of performance:
Model: 15-size 3D ARF Estimated Flying Weight w/Battery: 2.4 lbs Desired Level of Performance: 150-200+ watts per pound; Unlimited performance 3D and aerobatics
2.4 lbs x 150 watts per pound = 360 Input Watts of total power (minimum) required to achieve the desired performance
5. Determine a suitable motor based on the model’s power requirements. The tips below can help you determine the power capabilities of a particular motor and if it can provide the power your model requires for the desired level of performance:
• Most manufacturers will rate their motors for a range of cell counts, continuous current and maximum burst current. • In most cases, the input power a motor is capable of handling can be determined by:
Average Voltage (depending on cell count) x Continuous Current = Continuous Input Watts
Average Voltage (depending on cell count) x Max Burst Current = Burst Input Watts
HINT: The typical average voltage under load of a Ni-Cd/Ni-MH cell is 1.0 volt. The typical average voltage under load of a Li-Po cell is 3.3 volts. This means the typical average voltage under load of a 10 cell Ni-MH pack is approximately 10 volts and a 3 cell Li-Po pack is approximately 9.9 volts. Due to variations in the performance of a given battery, the average voltage under load may be higher or lower. These however are good starting points for initial calculations.
Model: 15-size 3D ARF (converted to electric) Estimated Flying Weight w/Battery: 2.4 lbs Total Input Watts Required for Desired Performance: 360 (minimum)
Motor: Power 15 Max Continuous Current: 34A* Max Burst Current: 42A* Cells (Li-Po): 3
3 Cells, Continuous Power Capability: 9.9 Volts (3 x 3.3) x 34 Amps = 336 Watts 3 Cells, Max Burst Power Capability: 9.9 Volts (3 x 3.3) x 42 Amps = 415 Watts
Per this example, the Power 15 motor (when using a 3S Li-Po pack) can handle up to 415 watts of input power, readily capable of powering the 15-size 3D model with the desired level of performance (requiring 360 watts minimum). You must however be sure that the battery chosen for power can adequately supply the current requirements of the system for the required performance.
Expect average speeds and higher thrust -ideal for F3A and extreme power for 3D and artistic aerobatics. Longer duration is approximately 15-18 minutes depending on throttle management.
What this Warranty Covers: Horizon Hobby, Inc., (Horizon) warrants to the original purchaser that the product purchased (the "Product") will be free from defects in materials and workmanship for a period of 1 years from the date of purchase.
What is Not Covered This warranty is not transferable and does not cover (i) cosmetic damage, (ii) damage due to acts of God, accident, misuse, abuse, negligence, commercial use, or due to improper use, installation, operation or maintenance, (iii) modification of or to any part of the Product, (iv) attempted service by anyone other than a Horizon Hobby authorized service center, or (v) Products not purchased from an authorized Horizon dealer.
OTHER THAN THE EXPRESS WARRANTY ABOVE, HORIZON MAKES NO OTHER WARRANTY OR REPRESENTATION, AND HEREBY DISCLAIMS ANY AND ALL IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE PURCHASER ACKNOWLEDGES THAT THEY ALONE HAVE DETERMINED THAT THE PRODUCT WILL SUITABLY MEET THE REQUIREMENTS OF THE PURCHASER’S INTENDED USE.
Purchaser’s Remedy Horizon’s sole obligation and purchaser’s sole and exclusive remedy shall be that Horizon will, at its option, either (i) service, or (ii) replace, any Product determined by Horizon to be defective. Horizon reserves the right to inspect any and all Product(s) involved in a warranty claim. Service or replacement decisions are at the sole discretion of Horizon. Proof of purchase is required for all warranty claims. SERVICE OR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY IS THE PURCHASER’S SOLE AND EXCLUSIVE REMEDY.
Limitation of Liability HORIZON SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS IN ANY WAY, REGARDLESS OF WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, TORT, NEGLIGENCE, STRICT LIABILITY OR ANY OTHER THEORY OF LIABILITY, EVEN IF HORIZON HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Further, in no event shall the liability of Horizon exceed the individual price of the Product on which liability is asserted. As Horizon has no control over use, setup, final assembly, modification or misuse, no liability shall be assumed nor accepted for any resulting damage or injury. By the act of use, setup or assembly, the user accepts all resulting liability. If you as the purchaser or user are not prepared to accept the liability associated with the use of the Product, purchaser is advised to return the Product immediately in new and unused condition to the place of purchase.
Law These terms are governed by Illinois law (without regard to conflict of law principals). This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Horizon reserves the right to change or modify this warranty at any time without notice.
Questions, Assistance, and Services Your local hobby store and/or place of purchase cannot provide warranty support or service. Once assembly, setup or use of the Product has been started, you must contact your local distributor or Horizon directly. This will enable Horizon to better answer your questions and service you in the event that you may need any assistance. For questions or assistance, please fill out our inquiry form or call 877.504.0233 toll free to speak to a Product Support representative. You may also find information on our website at www.horizonhobby.com.
Inspection or Services If this Product needs to be inspected or serviced, please use the Horizon Online Service Request submission process found on our website or call Horizon to obtain a Return Merchandise Authorization (RMA) number. Pack the Product securely using a shipping carton. Please note that original boxes may be included, but are not designed to withstand the rigors of shipping without additional protection. Ship via a carrier that provides tracking and insurance for lost or damaged parcels, as Horizon is not responsible for merchandise until it arrives and is accepted at our facility. An Online Service Request is available at https://www.horizonhobby.com under the Support tab. If you do not have internet access, please contact Horizon Product Support to obtain a RMA number along with instructions for submitting your product for service. When calling Horizon, you will be asked to provide your complete name, street address, email address and phone number where you can be reached during business hours. When sending product into Horizon, please include your RMA number, a list of the included items, and a brief summary of the problem. A copy of your original sales receipt must be included for warranty consideration. Be sure your name, address, and RMA number are clearly written on the outside of the shipping carton.
NOTICE: Do not ship LiPo batteries to Horizon. If you have any issue with a LiPo battery, please contact the appropriate Horizon Product Support office.
Warranty Requirements For Warranty consideration, you must include your original sales receipt verifying the proof-of-purchase date. Provided warranty conditions have been met, your Product will be serviced or replaced free of charge. Service or replacement decisions are at the sole discretion of Horizon.
Non-Warranty Service Should your service not be covered by warranty service will be completed and payment will be required without notification or estimate of the expense unless the expense exceeds 50% of the retail purchase cost. By submitting the item for service you are agreeing to payment of the service without notification. Service estimates are available upon request. You must include this request with your item submitted for service. Non-warranty service estimates will be billed a minimum of ½ hour of labor. In addition you will be billed for return freight. Horizon accepts money orders and cashiers checks, as well as Visa, MasterCard, American Express, and Discover cards. By submitting any item to Horizon for service, you are agreeing to Horizon’s Terms and Conditions found on our website https://www.horizonhobby.com/Service/Request.
United States: Electronics and engines requiring inspection or repair should be shipped to the following address:
Horizon Service Center 4105 Fieldstone Road Champaign, Illinois 61822
All other Products requiring warranty inspection or repair should be shipped to the following address:
Horizon Product Support 2904 Research Road Champaign, Illinois 61822
Please call 877-504-0233 or For questions or assistance, please fill out our inquiry form with any questions or concerns regarding this product or warranty.
United Kingdom: Electronics and engines requiring inspection or repair should be shipped to the following address:
Horizon Hobby Limited Units 1-4 Ployters Rd Staple Tye Harlow, Essex CM18 7NS United Kingdom
Please call +44 (0) 1279 641 097 or e-mail us at firstname.lastname@example.org with any questions or concerns regarding this product or warranty.
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Horizon Technischer Service Hamburger Strasse 10 25335 Elmshorn Germany
Please call +49 4121 46199 66 or e-mail us at email@example.com with any questions or concerns regarding this product or warranty.
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Please call +33 (0) 1 60 47 44 70 or e-mail us at firstname.lastname@example.org with any questions or concerns regarding this product or warranty.
Technical questions about this E-flite product should be directed to Horizon Hobby's Product Support Department:
Horizon Hobby, LLC. ATTN: Product Support 2904 Research Road Champaign, IL 61822
To place a Horizon Hobby Support Inquiry please visit our Inquiry FormSupport Phone:(877) 504-0233 Fax:(217) 355-1552
If you would like to purchase this product, please go to the Store Locator or contact the Horizon Hobby Consumer Sales Department:
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