Hans,
To address the basic question of what is needed for a typical inboard installation, here's a short list...
1. Batteries. A 48 volt system consisting of eight 6V golf cart batteries is a good choice and should give a couple hours duration at around 5 knots or so for a boat that size.
2. Motor. I've done a couple installations using the Briggs and Stratton E-tek motor. It's rated at around 7HP. I don't think that one is still on the market, but that's about the size you'd be looking at if you want to be able to hit close to hull speed. Mars is another popular motor manufacturer.
3. Motor controller. This performs the speed control function.
4. Reduction drive to match the motor to the prop. Toothed "timing belts" are a good choice, but some have used gaars or chain drives. Chains are noisy, gears are expensive. Typical ratios are between 2:1 and 3:1 for an inboard engine replacement using an existing prop.
5. Battery charger(s).
6. Misc. electrical stuff... Wiring, fuse, power switch, throttle control pot.
7. Volt/amp meters or some kind battery status display. Not strictly required but awful nice to have.
There are a lot of detailed choices for each of the above items, but I tried to outline the "big pieces" for a typical system to help you get an idea.
Cheers,
Jim McMillan
--- In electricboats@yahoogroups.com, "Hans, Hans Sembach, Sembach" <hsembach@...> wrote:
>
> New to the group. I live in Florida near Tampa. I have a Irwin 28 sailboat. The gas engine was previously removed and has a 9.8 Nissan hanging off the back. I've been interested in changing to electric but have been having a hard time finding a cost effective means to do so. In searching the internet I found this group, so here I am. I'm handy with tools and can build/assemble what is needed, just not sure exactly what is needed............
>
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