T-Pain Is On A Boat: Re: [Electric Boats] Re: Bearing Storage and Intermittent Use

Sunday, December 9, 2012

Re: [Electric Boats] Re: Bearing Storage and Intermittent Use

I don't think it makes much difference how the bearing is stored. On
it's side the area the ball rests would be smaller maybe. The ball would
still rest and the ball would still wear. Not on it's side the ball will
still wear but the race location that would wear would be in the path of
the working balls. A ball bearing is sold as a class of bearing the
smaller the number the smoother it runs. Motors and gear housings use a
low grade bearing a spindle on a machine tool uses a higher quality of
bearing. Because surface finish is not being produced as it would in a
machine tool what does it matter?

The number of flat spots on race and ball will increase noise while the
machinery is run but should last a long time anyhow. I think longer than
most people will use the boat anyhow. A free wheeling prop may add drag
and make a sail boat cruise at a slightly slower speed but all factors
in design are a compromise. I would try for a faster cruise if it were
me but you may choose otherwise.

Kevin Pemberton

On 12/05/2012 06:55 AM, John Green wrote:
> Thanks Erik,
>
> Yes, it would . The whole point made by the guy was that the bearing
> balls or rollers were static against the race surfaces for extended
> periods. It was stated that even in a regular house, with no industrial
> vibration, this would occur, due to things like the vibes from passing
> vehicles. It is just about impossible to isolate a stored bearing from
> vibration, apparently.
>
>
>
> Personally, I don't think that it is a big factor, but I am thinking
> that it might be prudent if taking a long trip, to make the room to
> have any stored spare bearings laid flat, rather than packing them into
> a vertical space.
>
>
>
> John
>
>
>
> 1b. Re: Bearing Storage and Intermittent Use Posted by:
> "[1]VE7YID@yahoo.com" [2]VE7YID@yahoo.com ve7yid Date: Tue Dec 4, 2012
> 7:50 am ((PST))
>
> Good post John! I remember being told that when I was an apprentice
> mechanic
>
> oh so many years ago.
>
> I wonder if letting the prop freewheel (turn) would solve the problem
> in our case? Erik
>
> References
>
> 1. mailto:VE7YID@yahoo.com
> 2. mailto:VE7YID@yahoo.com
>

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