Then of course there are the thin multi-ribbed belts common on most modern cars for driving alternators, fans, compressor, etc. They are probably not good enough for several HP, but for 2HP or less, probably they’re okay.
From: electricboats@yahoogroups.com [mailto:electricboats@yahoogroups.com] On Behalf Of danbollinger
Sent: Thursday, October 14, 2010 3:14 PM
To: electricboats@yahoogroups.com
Subject: Re: [Electric Boats] Electric drive units
It is impoertant to make the distinction between vee belts and cogged belts. The latter are a significant improvement over other belts and even gear boxes, to me. Belts will work when submerged and don't need their oil checked or changed. Of all the cogged belts, I find Goodyear Eagle GT herringbone belts the best. They transmit more power, are more compact, and quieter than other cogged belts.
--- In electricboats@yahoogroups.com, "luv2bsailin" <luv2bsailin@...> wrote:
>
> I concur with Miles.
> Belt drive technology has come a long way in recent decades too. For instance look at the main drive belt on a Harley. When I sold my last one at 50,000 miles the belt showed very little wear, and my current bike is on it's second belt at over 100K.
> Also, having a reduction drive allows you optimise the setup for your particular hull/prop/battery combination.
> Brushless motors have some advantages (generally quieter and slightly more efficient) but the controllers are more complicated and expensive. Whatever way you go, a well engineered system will go many years with almost zero maintenance.
> Jim
>
> --- In electricboats@yahoogroups.com, "Myles Twete" <matwete@> wrote:
> >
> > Brush and belt replacement hassles are overrated: I've been running now with
> > the same brushes since 2002 or so. It'll likely last another 6 or 8 years
> > before needing the 2nd or 3 sets I have.
> >
> > Re. 12v: 36-12v DC-DC converter---not expensive yet efficient---good for
> > 300watts or so in my case.
> >
> >
> >
> >
> >
> > From: electricboats@yahoogroups.com [mailto:electricboats@yahoogroups.com]
> > On Behalf Of gstranne
> > Sent: Wednesday, October 13, 2010 12:26 PM
> > To: electricboats@yahoogroups.com
> > Subject: [Electric Boats] Electric drive units
> >
> >
> >
> >
> >
> > Hi members,
> > I am new to this group and intereseted in your experiences with electric
> > drives for sail boats. There are several suppliers capable of providing
> > complete inboard packages for up to 48VDC or even up to 72V.
> >
> > I have checked SolidNav, Electric Yacht, Advanced Marine, Propulsion Marine
> > and ASMO.
> >
> > I would prefer a "maintenence free" system, i.e no brushes or belts to
> > replace. Please correct me if I am wrong but it seems that Advanced Marine
> > can offer that. Has anyone used such a system?
> >
> > How did you solve the need for 12VDC for the rest of the boat?
> > Did you tap that circuitry into one of the series connected 12V drive
> > batteries?
> >
> > Any comments to this would be appreciated?
> >
> > Gunnar
> >
>
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