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Antique Gas Engine Discussion

FM T main bearings


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Old 07-11-2005, 01:08:59 AM
Craig Barton Craig Barton is offline
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Default FM T main bearings

I need to make new main bearings for my worn out FM T. Looking in a McMaster-Carr Catalog there are a bunch of choices of bronze alloys. Besides leaded bronze are there other alloys that are suitable for making bearings for old engines? I'm kinda looking for a cored round to cut down on some of the machining.
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Old 07-11-2005, 10:19:27 AM
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Elden DuRand Elden DuRand is offline
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Default Re: FM T main bearings

Quote:
Originally Posted by Craig Barton
I need to make new main bearings for my worn out FM T. Looking in a McMaster-Carr Catalog there are a bunch of choices of bronze alloys. Besides leaded bronze are there other alloys that are suitable for making bearings for old engines? I'm kinda looking for a cored round to cut down on some of the machining.
Craig:

When I rebuilt my "T", I used some plain bronze tubing, gotten from McMaster-Carr. This is most likely the exact same material that was originally used. We machined both diameters.

We added the following step for oil control (to keep the bearings from drooling oil all over the place). In addition to the oil slots and holes along the top, we machined rings on the I.D. about 1/4" from the outer ends of the bushings then drilled holes to connect these rings to the O.D.s of the bushings, then we milled another slot along the O.D.s from these holes all the way to the inside ends of the bushings.

So far, our anti-drooling rings/slots seem to be working.

My server's in the hurricane and is down for a while but you can see the restoration (including the mains) on my website at:
http://home.cybertron.com/~edurand

Take care - Elden
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