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ZMXv2 2206 2600kv Full Results  [CLICK HERE]

  

Before I get too far, I want to point out some changes I've made to the presentation.  You'll notice the graph above looks slightly different than my usual.  Instead of efficiency, I've decided to add thrust delta, or the rate of change of the thrust to the chart.  I feel like this is a better comparative performance metric than G/W, so I've updated appropritately. I've also added two columns to each table, showing RPM and thrust delta for each of the thrust steps. Adding the delta calculations is extremely time consuming.  I'll be trying to work back through my results, but it takes a while to calculate, so we'll see how far I get.  I'll start with the most popular motors and work back.

Ok, on to this motor! This is a new motor from ZMX with a slightly larger stator.  The most significant thing to note here is the weight. They've managed a 2206 with a weight of only 28.6g which is lower than many of the 2205 motors on the market, much less 2206. Also they've changed the color to a nice bright blue!  Other than the stator size, this motor is essentially identical to ZMXv2 2205 motors.  It uses the only confirmed N52SH magnets I've come across. Interesting to note they are also arc magnets, which increases magnetic feild density at the stator surface.  Machine quality is fantastic and the motors are extremely smooth.  Bearing quality and balance is great, and the single wire windings should allow for low resistance and significant current handling.  Overall I am very impressed with these motors. Lets see how they performed on the stand.  One last note. The samples that were sent to me for testing are made from 6065 aluminum, but the final production versions of these will be 7075.  I don't see that changing performance at all, but it will be a nice durability upgrade.

Results

This motor hit some impressive numbers. The natural comparison here is with the Emax RS2205 2600kv motor which is close to the same weight, and similar KV.  The 2206 here is pushing slightly higher numbers at slightly higher amp draw.  I was really hoping to see a bit more of an efficiency advantage to 2206, but it seems the heavy 5" props are more of a load on 2206 than I had anticipated.  The biggest gains here seem to be on the 5x4.5HBN style prop, with the Gemfan version hitting some significant gains over the 2205.  There's some interesting data here on the thrust and RPM delta as well.  The 2206 seems to have a fairly consistant decrease in rate of change by about 20ms vs the 2205 motor across the board, regardless of prop or metric. Also it is interesting to note the 5x4x3 is a remarkably fast prop when it comes to changing speeds, showing pretty significant gains in that department over the 5x4.5HBN, even though it produces more thrust and amp draw.  Adding blades appears to increase thrust without shifting the rate of change as dramatically as increasing pitch.  This holds true across all motors, but interesting to see it played out here.  Overall this motor was definitely a screamer.  The amp draw on the heavier props really rose, and even the 4" props are hitting the mid 20s here, so watch your batteries folks! Overall this is one powerhouse of a motor.