Strategy for ULTRA POWER AND SPEED STRYKERS:


Hi all,

W = A x V
A = W / V
V = W/ A

Given a fixed amount of power (meaning Watts), the more Volts that you run the lower AMPs, and vice versa.

Normally to make more power, we just increase the volts to our motor on hand and to prevent the AMPs from jumping up too much and damage the motor we have to run a smaller prop.
With higher and higher volts and smaller and smaller prop we will get to a point that the size of the prop is too small for the needed thrust to overcome the drag of our airframe at very high speeds.

That is when we have to go to bigger motors.
Normally if we are speaking of a fixed/given motor manufacturer all of the motors of the same size with different windings will make same power, the will just do it on different AMPs and Voltages....Example: 16/25/3 on 6S and 16/25/2 4S are fairly close to each other and can do their best for us by swinging APC Pylon 6.5” diameter props when maxed out.
To make more power and also swing bigger props we need to go to bigger motors.

o.k. all of this is old news and common knowledge for many of you.

o.k. now we have big motors and great battery technology such as 45C Lipoly......so we are able to make incredible power and swing APC Pylon props at very high speeds....so much power that given the speeds involved it is not ideal to run APC Pylon props and we need a bit more diameter.

Now with MEGA 16/40/X series we can swing every prop at more RPM than before.


What KV should we choose? remember all of the motors of same size can make roughly the same power.

So the maximum power (Watts) that any fixed motor size can handle for a certain size prop is fixed...

....those Watts can be had with higher KV, less volts and more AMPs, or working towards lower KV with more Volts and less AMPs.
High KV will be limited by expensive ESC limits (such as CC Phoenix 180A) and large cell limits.....3S-5000 45C can be maxed out.

****Point of the above is that if we run 6S we can make power and have cheaper ESC.
Why run CC Phoenix 125A(capable of 6S) on 4S and 140+A when we can run CC Phoenix ICE Lite 100A on 6S and 100A and have a happier ESC that is cheaper?

Designing around CC ICE Lite 100A ESC will ensure that your ESC costs are lower and you have the added feature of ESC logging of A, V, RPM, ESC temp and voltage ripple, adjustable internal BEC, etc....

***Next you might say that the large motors that we have been raving about do not come in low enough KV to take full advantage of that….meaning that they cannot swing APC Sport 7X7 on 6S.

I discussed that with owner of MEGA while back and he agreed to add 3 motors to each motor size...for total of 9 new motors.

I asked for estimated kV of following 3 motors in hopes that they can swing 7" props on 6S


16/30/3 Kv estimated 1450 rpm
16/35/2.5S Kv estimated 1310 rpm
16/40/2.5R Kv estimated 1375 rpm

The bigger motors should have an easier time of it.

We will see.

***Some of the other motors will have even lower KV so we can try 8S.....or you can use (2) of your current medium sized 4S packs in series as 8S and run CC ICE good for 8S at no extra charge.

The advantage of 8S Compared to 6S is that the AMPs will be even lower.

It'll take a bit of testing in those lower KV motors to see which ones are good for 7S, which one for 8S.
With 7S and 8S the two packs can be installed end to end and some of the other hardware can be moved from below the hatches into the wing.

Random comment:
My guess would be that the 16/40/3 may come in at 1100KV or so.


**** Don't forget about MEGA 5mm COMBAT shaft option; usually free or $5 extra.



***************NOTE: more number of cells WHEN CHOOSING MOTOR KV, does not mean heavier battery pack....lower kv uses more cells but smaller cells due to lower AMP requirement.......few large cells or many small cells....same battery weight, similar battery cost, similar run time and similar prop at same RPM.

Only when we talked about a fixed motor and if we are to increase cell count and flow same AMPs is when we see increase of battery weight and cost.


Gryphon