Speed Calculator

[phildogg]

hey when using the calculator and coming up with voltage for li-po would it be 3.7 or 4.2v per cell? thanx
phil

[coolhandcountry]

Originally Posted by phildogg

hey when using the calculator and coming up with voltage for li-po would it be 3.7 or 4.2v per cell? thanx
phil

I try to base it on the type of cells and sytem. I ussually use 3.7 myself.
Not saying it is totally accurate. But then again. It gets you in a close
guesstimate.

[BrianG]

What I usually do is get a best-case speed and a worst-case speed.

To get the best-case speed, I use 4.2v/cell for the lipo and the maximum ballooning I think would be possible. Also, if I know it, I also use the unloaded motor kv value.

To get the worst-case speed, I use 3.3v/cell for lipo and no ballooning. Again, if known, I use the loaded motor kv value.

Either case will be wrong, but you know your speed has to be somewhere in the middle, probably a little towards the best-case side.