Just general info;

... Believe me we went round and round on this and decided the easy way
was EDM. If you do EDM impress upon the shop that does it to
put the planet carrier in a bucket of oil immediately (if not sooner)
after it finished.
EDM does an excellent job of removing all traces of oil.
If you don't do this the shafts will rust in a matter of seconds.
EDM is done under water...

Paul Lamar


Someone might be interested ...  This thread reminds me of one of my
last visits to a client's laboratory in Huntington Beach, CA.  While
there I quickly got to know a guy named Fred that owned a business next
door.  He had two huge buildings full of previously-owned industrial
equipment that he was trying to sell.  Fred (who is now almost 90 yrs
old) originally got into the business selling EDM equipment.  He
specialized in the graphite electrodes used for machining the pockets
designed to hold individual turbine blades in the main shaft. So if
anyone is considering trying to build their own TC turbo/turbine, it is
possible that Fred might be a help.

I've lost Fred's business card, but my client says that Fred's truck
still shows up in their shared parking lot each morning at
16512/16542 Burke Lane, Huntington Beach, CA

RBerglund

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