Tim_Duggan
Well-Known Member
- Joined
- Feb 21, 2005
- Messages
- 3,774
Humor me if you will.
I'm playing a little with P spec O/B tunnels to learn these FE things without releasing expensive smoke. SO far so good and am at the point where I'm tweaking props a little more to suit the handling of the boat. (42x55, back-cut and slightly tip cupped). I'm finding that after our race distance my pack's cell voltages are in the range of 3.80 - 3.90v per cell, & generally pretty well matched cell vs cell.
Now for my question! What is the safe lower voltage limit on the packs I should consider is the point where I'm close to asking too much, or am I close to it now? Cells and Motor are not getting hot, just warm - enough to comfortably hold on to. Packs are 5000mAh 4S nano-techs BTW.
I know I could use an external logger to the T120 ESC but that would add steps to my processes and I'm lazy, plus the handling of this boat is very sensitive to minute changes to CG and weight! I already check my cell voltages after each run as a matter of course. If I'm close to a safe limit now, I'll go looking in other areas rather than continued efforts to refine the prop more.
Thanks in advance,
Tim
I'm playing a little with P spec O/B tunnels to learn these FE things without releasing expensive smoke. SO far so good and am at the point where I'm tweaking props a little more to suit the handling of the boat. (42x55, back-cut and slightly tip cupped). I'm finding that after our race distance my pack's cell voltages are in the range of 3.80 - 3.90v per cell, & generally pretty well matched cell vs cell.
Now for my question! What is the safe lower voltage limit on the packs I should consider is the point where I'm close to asking too much, or am I close to it now? Cells and Motor are not getting hot, just warm - enough to comfortably hold on to. Packs are 5000mAh 4S nano-techs BTW.
I know I could use an external logger to the T120 ESC but that would add steps to my processes and I'm lazy, plus the handling of this boat is very sensitive to minute changes to CG and weight! I already check my cell voltages after each run as a matter of course. If I'm close to a safe limit now, I'll go looking in other areas rather than continued efforts to refine the prop more.
Thanks in advance,
Tim