The Monster Jet

Every day, I receive several emails and or YouTube comments on “how can I get my RC airplane faster” or “what motor can get my plane faster”   Speed will always be subject to the airplane design, the more drag, the slower it will go compared to the same motor / esc / battery combo on a similar more streamlined airplane.  But let us put the plane design aside for now and lets just focus on the motor, speed controller, and battery. 


The Monster Jet.  The name describes it all. This is a great powerful Monster of a motor and should only be used by the most experienced flyers.  But why is this so awesome?  In short, this motor is larger compared to all of the other park jet motors out there.  It weighs about 105g and can produce about 700 watts of power.  To put that into perspective, a 2-3 pound plane will go nearly 125mph.  If you do want to see this parkjet motor on steroids, just watch this YouTube video.

Size does matter.  The bigger the motor, the more powerful it can be.  Notice I said CAN, poorly designed motors can be large, but never perform to their potential.  The Monster Jet is about a 500 size out runner brushless motor and does NOT use any gear boxes or fan units. It simply spins a 2 bladed prop, very fast, up to 20,000 RPM.   Outrunner motors such as the Monster Jet, are the most efficient motor setup for electric airplanes.  The definitely out perform the EDF counter parts with the same battery.  

Power Hungry.  The more extreme the motor, whether it be speed or 3D, the more power it needs.  The great feature of the Monster Jet is that it comes in two different kv’s,  A 2200kv and a 2400kv.  The difference is that the 2400kv motor will spin a slightly smaller prop faster than the 2200kv using the same battery pack.

The 2400kv motor is for those who want to go VERY fast but stay with a 3S or 11.1v Lithium Battery Pack.  The 2200kv motor is for those who want to fly extremely fast, but in order to get this 2200kv motor to the faster RPM, a higher voltage battery is needed such as a 14.8v or 4S. I’m sure that made not much sense to most, so let me try to explain it better.

  • 2200kv 11.1v battery 7 x 6 prop
  • 2400kv 14.8v battery 7 x 5 prop

GraysonHobby 200 Amp ESC w/ Switching BEC

Speed Control:  Since we have already discussed this is a power hungry setup, the recommended electric speed controller is a 70amp ESC for the 2400 and a 60amp ESC for the 2200kv.  Before you fire this bad boy up, any high quality speed controller will have a few programming options, this is where you want to set the ESC timing to high.  Having the ESC timing to HIGH will enable to squeeze every last bit of speed out of the Monster Jet.




Prop Size:  The chart above explains it all, but everyone flying style is different. Some

Reverse Props

ParkJet Props

flyers what super huge loops, while others just want extremely fast level flight.  This is where having a nice watt meter comes in handy.  A watt meter is one of those tools where you do not know how you survived without it once you have one.  A watt meter will display the Amp draw and wattage of the motor.  When you test different prop sizes the Monster Jet, or any other motor on the bench (ground), you test at full throttle for 5 seconds or less. Running any brushless motor for longer than a few seconds will cause the motor to overheat since the heat is being dissipated thru the outer case of the motor.   When the motors are at full throttle in the air, they ‘unload’ and have plenty of cooling.  Ever stick you head out the window going 125mph?   Plenty of wind to cool you off, even on the hottest days, especially here in Hotlanta.

Hardware. Like all the Grayson Hobby motors, the Monster Jet comes complete with gold 4.0mm gold quick connects, (motor side already factory soldered, ESC and shrink in the accessory bag) compression prop collet, mounting screws, and a cross motor mount. 




So if you are an experienced rc flyer who enjoys flying electric airplanes extremely fast airplanes, then check out the monster jet from