Frequently Asked Questions

Q. What does “brushless” mean?
A. Though inexpensive, traditional “brushed” electric motors offer short run times and limited power. Current passes into the heart of the motor through soft to semi-hard blocks of material called brushes which contact the spinning commutator. Friction from this contact reduces power and causes wear, eventually requiring brush replacement.
    “Brushless” motors avoid these inefficiencies. Current passing around the outside of the motor’s can causes magnets on the motor shaft to follow in a circle (imagine the passing current acting like one magnet, pulling the magnets on the motor shaft toward it). Brushless technology is more expensive, but also more efficient — and can be MUCH more powerful!

Q. What advantages do brushless electronics have over glow engines?
A. Previously, only glow engines could achieve the performance now available from brushless motors, ESCs and accessories. Brushless technology, however, has benefits that glow power can’t match.

• Cheaper — Only a charger and batteries are required…no fuel, glow plugs, starting equipment, or maintenance accessories to replenish over time.
  
• Simpler — Just connect the battery to the ESC and go!
  
• Cleaner — No fuel spills and exhaust residue to clean, and no fuel odor.
  
• Quieter — An important consideration with non-modeling neighbors.
  
• Maintenance-free — Compared to glow engines, which require maintenance and tuning.

Q. How efficient are Kontronik motors?
A. Traditional brushed motors get 40% or less efficiency. On average, Kontronik brushless motors reach up to 89% efficiency, for longer run times, less heat, and better overall flight performance.

Q. When I use a brushless motor, do I also have to use a brushless ESC?
A. Yes. Brushless motors will not work with non-brushless ESCs — the two technologies are completely incompatible. A brushed ESC just pumps out current like a fire hose pumps out water. A brushless ESC spreads current in a precise pattern to different places in the motor.

Q. What warranty and service options do Kontronik products offer?
A. All Kontronik products carry a full 2-year warranty, and can be serviced at our Hobby Services Center by calling (217) 398-0007 or visiting us on the web at www.hobbyservices.com.

Q. Where can I find Kontronik products?
A. Most hobby shops around the U.S. now carry Kontronik products. Additional information is available on the web at www.kontronikusa.com or by calling 1-800-682-8948.
Special Notes on Brushless Set 400: Great Planes Douglas DC-3 (GPMA1155) requires two KONG5000 sets. Use with Great Planes Sukhoi SU-31 (GPMA1185) also requires a 4.2:1 gear reduction unit.