View Single Post
  #17  
Old 2019-05-09
MichaelLevy MichaelLevy is offline
Non-WIMAC Member
First Name: Michael
Last Name: Levy
MAAC Number: 15553
WIMAC WINGS: Solo Planes
 
Join Date: Oct 2009
Posts: 313
MichaelLevy is on a distinguished road
Quote:
Originally Posted by Mezri View Post
Yes Michael, you are right, the sound is quite differente,...I have A 50mm FMS 3S version, with 3S 850mAhLipo(75C), it gives me 720g thrust first seconds, than around 680gr on 32 Amps...Quite interesting looking in Wheight to thrust ratio...(EDF+ESC+LIPO=200gr)
And my test was just blowingair on the scale...my be more with a real thrust mesurements device.
Correct. I get similar results, but the rule of thumb is that you lose about one third of thrust once the unit is in the plane (see link below). So that means 680gm becomes 453 gm in real life! As far as sound, my pre-balanced 6S 70 mm Powerfun Fan motor combo unit sounds the closest to a jet turbine than anything I have ever had before. Light weight, lots of power, no vibrations at all no motor sound.

https://www.rcgroups.com/forums/show...70mm-fan/page2
Reply With Quote