ok, was picturing a single unit centered like on a trampoline boom.. (hobie-cat as a pint size example) the cat hulls acting as keels would be some force to overcome to steer, a bit like a powerslide. a local here has a big block in a pontoon boat and after a certain speed the rudder might as well not be there at all, for inability to overpower the two pontoons trying to track a straight line (ouch). definitely has me wondering if something like a longtail's whole shaft swinging the location of the thrust could do. of course his pontoon boat is ridiculously overpowered anyway and he oughtta be at least trying an inboard-outboard type Z-drive, not straight shaft and rudder.. (glad I dont own that beast!) which would probably require a center-pod to give it a home. yup, the photo's are kinda close-ups, so I didnt really get the overall pic in my head.
--- On Thu, 3/1/12, chris Baker <chris@currentsunshine.com> wrote:
From: chris Baker <chris@currentsunshine.com>
Subject: Re: [Electric Boats] Re: Newbie Question- Converting a 45' catamaran
To: electricboats@yahoogroups.com
Date: Thursday, March 1, 2012, 7:05 AM
Hi Ken,
The idea is not to attach them at the stern, but under (or partly within) the bridge deck on the inside of each hull. So the prop finishes close to the stern, right about where the prop usually is. With this in mind the photos might make more sense.
cheers
chris
On 01/03/2012, at 9:10 PM, KEN wrote: | not really seeing it by the photo's, but I'm sure familiar with the longtail engines.. seen plenty of video's of them folks in Thailand racing em on skinny little mono-hydro hulls (OMFG wow!), and of course the mud-hog's or beavertails used in swampy areas. larger similar sure could be convenient for a catamaran, all the reasons AndHanna mentioned. adding a low rear extension platform to take the weight and force sure could be a heck of a job, but there sure are a lot of advantages with that concept! (not that I have a boat for it) I'm already imagining a servo motor system for managing tilt and steering, very doable I'm sure.
I sure like the idea that it can be un-pinned and picked right off the boat if servicing needed. |
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