Final Answer for 4S Beef

[SamuelH]

Iam surfing internet for a while now and cant find final answer for my question. Can I power Beef (GT2215/09) with 4S battery ? Josh said on show that you should never use propeller bigger than 9x4,5 on 4S but on which motor ? Iam newbie from Slovakia and I have built several FT models now. Currently Iam building F MiG3 and I have this question.

Please excuse my english.

With regards

 

[Mid7night]

Look at the prop test data from here: http://www.headsuphobby.com/Emax-GT221509-1180kv-Outrunner-Brushless-Motor_p_1354.html



This shows you the current draw with 9" props on 3-cells. If you want to go up to a 4s, I would drop down to at least an 8" or even a 7" prop.

You can also use the "ecalc" prop/motor calculator to estimate the current draw for a given setup: https://www.ecalc.ch

Just click on "Propeller" under the language of your choice.

 

[SamuelH]

Thanks a lot, I think that 220W will be enaugh for now and when I calculated in eCalc Beef on 4S it only showed 210W