Saturday, September 17, 2011

[Electric Boats] Re: reduction drives

 

Another option is a Browning 3201 gearbox. The ME0907 should bolt directly to it. They have a built in thrust bearing, 97% overall efficiency including bearings and seals, 10,000 hours MTBF and come in 10 different gear ratios. To me, a single component that handles everything (reduction, thrust, motor mount, etc.) helps keep it simple.

Fair winds,
Eric
Marina del Rey, CA

--- In electricboats@yahoogroups.com, danbollinger <no_reply@...> wrote:
>
> Take a look at Goodyear Eagle NRG herringbone belts and matching pulleys. http://www.goodyearep.com/ProductsDetail.aspx?id=3400
>
> Most radial bearings will accept a certain thrust, moreso if they are angular contact type, so you might not need a thrust bearing in your drive system.
>
> For simplicity, look at flange and pillow block mounted bearings.
>
> --- In electricboats@yahoogroups.com, "svcabernet" <bsmisner@> wrote:
> >
> > Hello all,
> >
> > I've been lurking here for a while, which has paid great benefits as I've been putting together a parts list for an electric drive for my Cascade 29.
> >
> > Given the limited budget I've decided to "build" the system myself rather than go with one of the tried and true manufacturer's assemblies.
> >
> > The one component(s) I've been having trouble with is the reduction drive. I've decided to use timing pulley's/belts or sprockets and chain along with captured roller/thrust bearings but am having a tough time sourcing them. I wouldn't be opposed to a gear reduction either provided a "bullet proof" reputation. The motor of choice is the ME0907 for it's lack of brushes, performance, and affordability. By my calc's a 2:1 to 2.5:1 reduction will be needed to maximize performance. Any ideas would be appreciated.
> >
> > Thanks,
> >
>

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