data logger

[lohring]

You measure the output from the battery to the ESC. You can measure the total input to the ESC from the batteries if you have a large enough current sensor. Our outboard hydro ran seven packs in parallel with those sets of packs wired in series. The output at the motor was 133 volts nominal with around 700 to 900 amps. We measured the current and voltage from the output one pack on each side of the boat with two Eagle Tree loggers. They were in close agreement and we felt confident in multiplying the current and voltage from one battery to find the totals.

Lohring Miller

[Rich]

WOW! 700-900 amps and 133 volts?? Lets some pics of that boat!

[lohring]

http://www.youtube.com/watch?v=-yNu2_LlO9s

Lohring Miller

[Rich]

Thanks! That's very interesting to see that you are bringing in rc to the full scale world.

[lohring]

It's way easier (and a lot less expensive) to try things in models. If you're wrong, you can try again and no one dies. Modelers know a lot more than they give themselves credit for because they can try a lot of changes to their boats quickly.

Lohring Miller