On Tue, Jul 26, 2011 at 06:18:30PM -0700, Arby bernt wrote:
>
> Marine rated brushed motors have a UL protocol to satisfy in order to get
> certified. I worked with UL, purchased the standards, and did some testing in
> my own "lab" (the bottom of an empty swimming pool, in case of an explosion I
> was out of the basin. It was cool to have a spark-plug sticking out of a
> brushless motor connected to a propane and compressed air tanks. Hybrid!).
I remember putting together a piezo-electric-fired setup similar to that
at one point, but it wasn't anything nearly as work-oriented as yours:
me and two of my Army buddies used to play around with things that went
"boom". We sometimes managed to go for _weeks_ without losing our
eyebrows... ahh, youth. :)
> I'm glad to hear that the Elco units are working well. I just installed 2kw
> (back-up) and 8kw units running at 300vdc on my own Skipjack project boat. I'm
> an engine'er, not a sailor. I've removed one of my ancient AQ170 engines and
> will be installing a 180kw peak, 30kw continuous, water cooled brushless motor
> and controller in its stead. Yes, I know there's no way I can power wide open
> it for more than five minutes, but I need 140kw to pop the boat onto plane.
You're clearly not speaking of the Skipjacks that I'm familiar with
(traditional-style fishing vessels on the Chesapeake, purely
sail-powered but built with a slot in the stern to receive the bow of a
"push boat".) Yours sounds like quite a project - good luck with it!
--
Ben Okopnik
-=-=-=-=-=-
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