3.1 l/100km, not bad indeed for a retro-technology I'm also still using (4 l/100km with BMW F800S)
.
But back to the future... The choice of R1 on the Power PCB is much more sensitive to the battery voltage than I first thought.
Protect the processor-board from high voltage (how much is acceptable?) means high resistor values which means high losses (heat dissipation) at the 50mA needed by the processor board. Here's my conclusions based on lebowskis remarks:
- R1_choice_lo600.jpg (154.98 KiB) Viewed 663 times
To stay below ~60V as supply voltage for the processor board, 1 resistor with 0.5W is enough up to a 16S (67V) battery. For higher voltages several 0.5W-resistors are needed for heat dissipation.
10S-battery 1 x 100 Ohm or just a bridge for R1
13S-battery 1 x 100 Ohm 0.25 Watt losses
16S battery 1 x 150 Ohm 0.38 Watt losses
20S-battery 3 x 1.5kOhm in parallel, 1.25 Watt losses (or 3 x 150 Ohm in series) (or 1 x 470 Ohm 2W)
24S-battery 5 x 3.9kOhm in parallel, 1.95 Watt losses (or 5 x 150 Ohm in series) (or 1 x 820 Ohm min. 2W)
Modified Scott Nitrous, 74V, MagicPieV2, waiting for Lebowski-Controller by whereswally
Quantya Evo1 and eScooter vRone, each with Lynch motor, 74V 40Ah, Alltrax AXE 7245
Dream: Quantya with Lebowski-Controller and brushless motor (Revolt RV-160, Colossus, Emrax 207, ...)