This is a direct comparison between Freewing & FMS 80mm EDF units, both with an inrunner motor.
FMS 80mm 12b 3280 2100kv inrunner motor.
Freewing 80mm 12b 3658 1857kv inrunner motor.
I have both setups running already in 2 of my planes: the FMS unit in my Freewing Skyhawk and the Freewing unit in my Freewing L-39. Both are excellent setups and I'm very happy with the performance in both planes.
As I want to change to stock 80mm outrunner unit in my Freewing Mig-21, I decided to test both setups and let the numbers decide for me
Thrust is very important to me as I fly on grass field which isn't perfect and rather short, max. 80 metres.
I bought the Freewing unit as a whole assembly at Banggood:
https://www.banggood.com/Freewing-E7...p-1601176.html
(The title isn't completely right, it's a metal housing with a 12 blade fan and a 3658 1857kv inrunner motor)
I bought the FMS 2100kv inrunner motor separately at Aliexpress a while ago and recently I bought a unit without the motor.
https://nl.aliexpress.com/item/32977514087.html
https://nl.aliexpress.com/item/33005297363.html
I installed the inrunner motor in the housing myself and the balance was just right, no vibrations at all.
Here's the measurements:
For starters, me and my friend Hans tested the thrust, amps and watts at 50% throttle and 100% throttle. For both setups we set 12 degrees (low) and also 24 degrees (medium) timing on the Plush 32 120A HV ESC. Both are inrunner motors and need a
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