[SEL] o.t. test

[Carl McGhee]

test

Carl McGhee
----- Original Message ----- 
From: "Carl McGhee" <mcghee9 at comcast.net>
To: "The SEL email discussion list" <sel at lists.stationary-engine.com>
Sent: Saturday, April 05, 2008 5:20 PM
Subject: Re: [SEL] Babbitt lapping compound


> Thanks Tommy for your tip on doing bearings, I like it. How do you do your
> oil grooves in the bushing?
>
> Carl McGhee
> Battle Creek Mi.
> ----- Original Message ----- 
> From: "Judge Tommy Turner" <lcjudge at scrtc.com>
> To: "The SEL email discussion list" <sel at lists.stationary-engine.com>
> Sent: Thursday, April 03, 2008 7:36 PM
> Subject: Re: [SEL] Babbitt lapping compound
>
>
>> Guys, I do bearings the lazy way.  I polish the crankshaft until its
>> bright.  Then I make a bronze bushing about 1/8 thick that has about 5
>> thousandths clearance (sometimes you can get lucky and buy these from
>> McMaster Carr and other suppliers).  I then split the bushing in 2
>> halves.  I tin the back side with solder and then put the 2 halves back
>> on the crankshaft and wrap a very fine brass wire around them to hold
>> them in place.  Then I'll situate and align the crank in the journals
>> with screw jacks dam up the ends and throw with Babbittrite.  I usually
>> do a little preheat on the base and then I pour the bottom half, let it
>> cool, place my shims (usually I'll make these out of gasket material or
>> oiled paper) set the cap on, dam it up and pour the top half.  I've done
>> this with several engines and never had a problem.  It leaves a perfect
>> bearing surface and there isn't any scraping or fitting needed.  Now if
>> someone wants the fun and experience of a babbitt/scrape job, they'll
>> want to pour the babbitt and spend a day scraping and fitting.  I
>> usually just want a good bearing job.
>>
>> Tommy Turner
>> Magnolia, KY
>>
>> Rob Skinner wrote:
>>
>>>On Apr 3, 2008, at 9:28 AM, William Young wrote:
>>>
>>>
>>>>Answer:  I think scraping takes skill & experience, neither of which
>>>>I have.
>>>>
>>>>
>>>
>>>Skill?  Experience?  Trust me, Wakai-san, neither of those are required.
>>>
>>>JB suggests using an old piston ring.  He knows a thing or two about
>>>engines, so listen when he types.  I've used an old hacksaw blade, but
>>>you can use any hunk of metal that you can sharpen into a shap
>>>convenient for scraping.
>>>
>>>The babbitt doesn't cut so easily that you have to worry about
>>>accidentally ruining the job if you hiccup.  If you're capable of
>>>shaving your face without ending up with a sink full of blood, you can
>>>shave babbitt.
>>>
>>>I've been working out of the same quart of Starrett layout dye that
>>>I've had for the last 25 years, but you can probaby substitute any
>>>kind of coloring that will transfer between the surfaces.
>>>
>>>Party on,
>>>ロブスキナー
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
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>>>SEL at lists.stationary-engine.com
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>>>
>>>
>>>
>>>
>>>
>>>
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>
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