[Farmall] O-12 parts

olmstead at ridgenet.net olmstead at ridgenet.net
Tue Nov 25 18:37:52 PST 2008


I've read some of those, Todd.  The Dave Gingery series.  That's one of
the reasons I mentioned the possibility of casting the air cleaner top out
of aluminum.  Much lower temp than cast iron.  Aluminum can be melted with
a torch; it doesn't require a cupola.

Machining the air cleaner top out of a solid piece could be done, but it
would be pretty costly.  I could get a premium for them, however... they'd
be 'billet' parts.  That's good for at least $100 extra from any
hot-rodder.

I'm guessing that the Amish don't have a big presence on the internet. 
Might need to have Lane talk with them.

I do appreciate all your suggestions.  I'm still thinking about what the
best approach would be.  I admire the guys I meet at tractor shows who
have new castings for sale.  Maybe it's my turn.

For those of you not familiar with casting, what Chris was talking about
was the shrinkage that takes place when you cast a part.  The mold you
start with needs to be quite a bit bigger than the finished part you want.
 If the liquid metal solidifies at 2000 F, it will shrink a surprising
amount by the time it gets to room temperature.  Restorers allow for this
by building up the original part using Bondo before it is used to make the
sand mold.  Or they make a new, oversized part out of wood and use that to
make the molds.


-Karl
------------

> There are some pretty good books out there on sandcasting from
> Lindsaybooks.com. If you like to read, you may try reading some of them so
> you know more about the process. I read one that even tells how to make
> your own furnace and do your own casting?if you are really adventurous.
> Knowing how the process works can help in chosing someone to do it for
> you. And you may end up being able to do part of the work yourself to keep
> the cost down.
>
>
>
>
> Todd Markle
> Spring Mills, Pa.





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