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2K Fun Stryker Build

Free online calculators can aid in finding the right Motor, Esc and Battery combinations. The data can be very close to actual flight data although its not always precise. Below is the basics on how to use it.

Free Online Calculator

Brantuas
 

Now lets say we used the brantaus calc above and the motor we wanted to know about is a Mega 16-25-3. In the calc drop down menu (Motor Selection) pick out the motor. If the motor you have chosen isnt in the list you will need to scroll to bottom of motor list and select (Custom) then you need to enter the motor data manually.

SELECT MEGA 16-25-3 for test

Next you need to (Select Prop) for that motor. If your not sure what prop to start with just use 6x4 and APC  as most motors used on a stryker will use an APC around that range.

SELECT 6x4 APC for test

In the (Battery Selection) select your battery, or scroll down to bottom of list and select custom and add the data manually.

SELECT THUNDER POWER 2100 for test

Dont worry about the (Select Esc) just yet as the data we collect will tell us what size esc we need to use. Hit the calculate button and note the results at bottom. The most important thing here is the EFFICIENCY if you want to see how far you can push this motor. You want the efficiency as close to MAX EFFICIENCY as possible, so we need to start playing with the props and or battery combos to get best results. Lets try the props first, I bumped up the prop to 7x4 and you can see the EFF is getting closer to MAX EFF number.

Lets see if we bump the prop up more to say 8x8 and see if it gets closer to MAX EFF number. No, the EFF went down so that means we went over MAX EFF number and its starting to decline EFF. So we need to go backwards in prop size till we get the rite number

Lets try a 7x7 prop and see what happens. Looks pretty good. EFF of 88.1 is very close to MAX EFF of 88.6

Now what we got from this so far is this:

A 7x7 or even an 8x4 prop would be a good choice using a 3s thunder power 2100 battery and the MOTOR AMPS: of 29.342 tells us we need an esc over 30 amps. If you try other props you may get even closer to Max EFF.

Ez isnt it :)

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