Thanks, John. I saw the reducer and it looks robust. Will probably go the belt route.
Victor
--- In electricboats@
>
> Victor,
>
> Baldor makes a 2:1 reducer that will fit a 7/8 shaft. I have one but it has
> been altered. If you want a belt drive you will need mounting brackets,
> cleated belt and pulleys. A cleated belt will run quieter but the gear
> reducer eliminates the belt. Both methods are high efficiency contrary to
> what some people will tell you.
>
> John
>
>
> On Wed, Apr 21, 2010 at 1:34 AM, vjmtymo <vjmtymo@...
>
> >
> >
> > Years ago I jumped into the group trying to figure out the particulars of
> > e-drive in my 36ft sailboat. At the time, I thought it wouldn't work but am
> > now having quasi-sublime second thoughts particularly as I prepare to lug
> > the diesel out of the garage and, somehow, up into the hull. If you're
> > rolling around on the ground saying "I told you he'd be back" well, get it
> > all out of your system and then read on.
> > I've heard 48v is too much, just right, and of course, not enough. A local
> > Canadian EV shop in the neighbourhood recommends 72v, but I have my doubts.
> > Maybe I should just jump in with both feet and see what happens, so, having
> > priced out and sourced all the parts for an Etek RT system in 48v, I now
> > need the drive system parts. Kind souls of this forum sent good info on how
> > to use a trailer hub for a thrust bearing (Dave?) and pillow blocks
> > (others). My boat is steel, my medium is steel, and I've got enough scrap
> > left over to make any kind of frame for the motor etc. I'm just a bit hung
> > up on the pulley thing: the shaft for the Etek is 7/8 with a keyway. How do
> > you connect this to an off-the-shelf synchronous pulley? Is there one that
> > has range for this shaft? Where do I get it (them) to obtain decent
> > reduction around 2:1? Please excuse my lack of power transmission knowledge.
> >
> > So, if anyone's up for downloading their know-how yet one more time, I'd
> > greatly appreciate it. In the meantime, I'll chase a few crows if that
> > helps.
> >
> > Victor
> >
> >
> >
>
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