Greg I work for a German based company called INA USA. We are or have
in the passed made some bearings for Mercury, but I was never involved
with that project. I am involved mostly in valvetrain components. I
knew to well about those dead brain cells.
Bill
----- Original Message -----
From: "Hyatt Engineering Ltd." <Hyatt-Engineering-Ltd@fuse.net>
To: "Bill Bennett" <benettw@earthlink.net>; <V4GR@aol.com>;
<land-speed@autox.team.net>
Sent: Thursday, September 21, 2000 7:11 PM
Subject: Re: Outboards
> Bill,
> The rollers on the crank are caged, the needles on the wrist pin are
not.
> As I recall the outboards use Torrington (sp?) bearings... is that
who you
> work for? I believe that OMC and Mercury both use the same source.
> I was an engineer for OMC in a previous life (or at least it seems
that long
> ago) and a lot of those brain cells have died.
> Greg
>
> ----- Original Message -----
> From: "Bill Bennett" <benettw@earthlink.net>
> To: <V4GR@aol.com>; <land-speed@autox.team.net>
> Sent: Wednesday, September 20, 2000 9:18 PM
> Subject: Re: Outboards
>
>
> > Rich you called them roller and ball. I would have thought that it
> > might have been a caged needle bearings. I believe the company I
work
> > for makes the caged needle assembly for those motors. I am not for
> > sure as that part is made at a different plant. One thing to take
into
> > consideration is the hardness of the needle compared to the crank
> > surface. If the surface of the crank is too soft then you will end
up
> > destroying the crank. If the needles are softer you will wind up
> > pounding the needles out of the cage especially on the rods.
Remember
> > what a spun rod bearing looks like! My thought would be maybe some
> > type of hard chrome or other type of surface treatment coating
that is
> > applied with heat. The needles are not chromed they are just
polished
> > after grinding. I have seen these assemblies in cam bearings, but
> > never on the rods and mains. Thoughts of pounding from the rods
and
> > end thrust control on the mains?
> >
> > BillB
> >
> > ----- Original Message -----
> > From: <V4GR@aol.com>
> > To: <land-speed@autox.team.net>
> > Sent: Wednesday, September 20, 2000 6:38 PM
> > Subject: Outboards
> >
> >
> > > I went to look at some outboard motors today. Mercs. 2 liter 4
> > cylinder at
> > > 200 hp and a 3 liter V6, don't know the power. They do use
roller
> > and ball
> > > bearings for rods and mains. I am thinking that offset grinding
> > welding and
> > > grinding back to original dia. may work. I am not sure nitriding
> > will strand
> > > up to roller bearing pressure. Also the powerheads are
expensive.
> > > This weekend I went to the Silver State Race, at Wes Potters
> > suggestion. It
> > > was great. 80 miles of 2 lane blacktop wide open. Winner was an
old
> > Tony
> > > Stewart Winston Cup car at 202 average. I was about 2 miles down
a 5
> > mile
> > > straightway and the cars were moving when they went by. Rich Fox
> > >
> > >
> >
> >
>
>
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