Frequently Asked Questions

Which Motor Do I need?

Choosing a brushless motor can be intimidating, but understanding a few specific characteristics you can easily find the perfect motor. Motors with higher winds spin slower and they have a lower Kv (RPM/V). They spin a larger propeller at slower speeds and at a lower current. Motors with lower winds have a higher Kv (RPM/V). They spin a smaller propeller at higher speeds and at a higher current than high turn motors.

To determine the motor, decide on your flying style and aircraft. Is it a sport fast flyer, or a slow plane with a lot of drag? For the high speed airplane a low turn high KV that spins a small prop fast would be the right choice. For the slow, high drag plane, a high turn motor (low KV)that can spin a much larger prop and produce a lot of thrust at low speed is what you want. A very loose comparison is RPM = KV

Low KV = slow RPM, large prop, low AMP (current)

High KV = fast RPM, small prop, high AMP (current)

Below is a motor chart that will assist in choosing a brushless motor based on aircraft weight. However, choosing a motor is dependent on aircraft type, battery and flying style. Below is a chart that will guide you in your choice. When choosing a motor, the battery, electronic speed controller ESC must be able to handle the current. Clicking on any motor will provide more specific motor information.

Glow to Electric Conversions

  • Glow Size
  • GraysonHobby Motor
  • Aircraft Weight
  • watts
  • ESC
  • .20 equivalent
  • Tower Pro 2908-10
  • (1.5 lbs - 3 lbs)
  • 300 Watts
  • 30Amp
  • .25 - 35 equivalent
  • GH 2814 -06
  • (2.1 lbs - 4.25lbs)
  • 350 Watts
  • 45Amp
  • .25 - 35 equivalent
  • GH 2814 -08
  • (2.1 lbs - 4.18lbs)
  • 350 Watts
  • 45Amp
  • .30 equivalent
  • Tower Pro 2915 - 5
  • (2lbs - 5lbs)
  • 450 Watts
  • 45Amp
  • .30 equivalent
  • Tower Pro 3015 - 5
  • (2 lbs - 5 lbs)
  • 500 Watts
  • 40Amp
  • .40 equivalent
  • GH 2820-06
  • (2.18lbs - 5.5 lbs)
  • 550 Watts
  • 45Amp
  • .0.40 equivalent
  • GH 2826-06
  • (4 lbs - 6 lbs)
  • 550 Watts
  • 45Amp
  • 0.40 - 0.50 equivalent
  • GH 3520-12
  • (3.3lbs - 6.17lbs)
  • 700 Watts
  • 65Amp
  • .60 equivalent
  • GH4120-07
  • (4.5 lbs - 7.7 lbs)
  • 1000 Watts
  • 70Amp
  • .60 - .90 equivalent
  • GH4130-08
  • (6.6 lbs - 13.25 lbs)
  • 1300 Watts
  • 80Amp

GraysonHobby Park Flyers

  • Glow Size
  • GraysonHobby Motor
  • Aircraft Weight
  • watts
  • ESC
  • GH Motor
  • (RPM / V) KV
  • Aircraft Weight
  • Flying Type
  • ESC
  • GH 2204
  • 1400
  • 3 oz - 10 oz
  • Indoor / 3D
  • 10Amp
  • GH 2208-17
  • 1100
  • 7 oz - 17 oz
  • Pattern/3D
  • 20Amp
  • GH 2208-12
  • 1700
  • 7 oz - 17 oz
  • Pattern/Sport
  • 20Amp
  • GH 2208-08
  • 2200
  • 7 oz - 17 oz
  • Micro Parkjets / Speed
  • 20Amp
  • GH 2212-15
  • 930
  • 10.2 oz - 28.2 oz
  • 3D
  • 20Amp
  • GH 2212-13
  • 1000
  • 10.2 oz - 28.2 oz
  • Pattern/3D
  • 20Amp
  • GH 2212-10
  • 1400
  • 10.2 oz - 28.2 oz
  • Sport
  • 20Amp
  • GH 2212-06
  • 2200
  • 10.2 oz - 28.2 oz
  • ParkJets / Wings
  • 30Amp
  • GH 2217-06
  • 1500
  • 20 oz - 50 oz
  • Sport
  • 30Amp
  • GH 2217-09
  • 1080
  • 20 oz - 50 oz
  • Pattern/Scale/3D
  • 30Amp

Economy Brushless

  • GraysonHobby Motor
  • KV (RPM / V)
  • Aircraft Weight
  • Flying Type
  • ESC
  • TP 2408-21 Star
  • 1750
  • 8 oz - 30 oz
  • Sport
  • 20Amp
  • TP 2410-12 Star
  • 970
  • 8 oz - 30 oz
  • Pattern / 3D
  • 20Amp

RC-Tech

  • GraysonHobby Motor
  • KV (RPM / V)
  • Aircraft Weight
  • Flying Type
  • ESC
  • C20 PRO - 15
  • 1500
  • 8 oz - 25 oz
  • Sport
  • 15Amp
  • C20 PRO - 20
  • 2050
  • 8 oz - 25 oz
  • Micro Jets
  • 25Amp

Grayson Hobby

  • GraysonHobby Motor
  • KV (RPM / V)
  • Aircraft Weight
  • Flying Type
  • ESC
  • Super Mega Jet
  • 2300kv
  • 20 oz - 40oz
  • Sport / Parkets
  • 40Amp

Silver Bullet Series

  • GraysonHobby Motor
  • KV (RPM / V)
  • Aircraft Weight
  • Flying Type
  • ESC
  • Silverbullet C20
  • 2100
  • 8 oz - 12oz
  • ALL
  • 10Amp
  • Silverbullet C20
  • 2500
  • 8 oz - 16 oz
  • Sport (Warbirs)
  • 10Amp