Try the online catalog at Glen-L, they sell the bible of prop. It is by David Geer and is called simply, "Propeller Handbook", and sells for under $20 bucks. I am ordering one and am told it is the best to have and use in your marine library. I have been wrestling with the same issues with my E/M (electric marine) conversion, and am a lot closer to being "in the marina"(not the ballpark) with diameter and pitch.
Dan
----- Original Message -----
From: Hannu Venermo gcode.fi@gmail.com [electricboats] <electricboats@yahoogroups.com>
To: electricboats@yahoogroups.com
Sent: Sun, 13 Dec 2015 10:38:12 -0500 (EST)
Subject: Re: [Electric Boats] Re: Arrival of Motor and Controller
Does anyone have any links to actual data re: efficiencies with slow,
large props ?
On 13/12/2015 14:15, moriartybob@yahoo.com [electricboats] wrote:
> Electroprop includes a large prop with most of their kits. I passed on
> that for now and am going to see how things go initially with my
> somewhat large, fixed, 2-blade prop. I need to haul the boat for a
> bottom job in a few months and will then decide whether to go with a
> bigger prop and maybe change the planetary gear reduction from 3:1 to 5:1.
> Lots of fun. Should be going live in a few weeks.
> --Bob Moriarty
--
-hanermo (cnc designs)
Posted by: DAN HENNIS <dhennis@centurytel.net>
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