James Russell wrote:

BTW the clutch throw out load is way more than 100 pounds.
There was a hydraulic cylinder and a lever in most older set ups.
You are talking to the inventor of the annular hydraulic clutch throw out
bearing widely used on all manual transmission cars these days.

Really! We thought that they were so cool when the Swift Formula Ford
came out w/ them in 1984-5. Like the whole car, it was a ground-up
rethink of things which everyone just took for granted... It is nice to
make the connections across technical fields.

Where Swift got them was from Tilton Engineering. Tilton is my old
company Lamar Engineering renamed to Tilton Engineering. I invented
them in 1971 or 1972. Lamar Engineering started in about 1969 in Hermosa
Beach CA to build wings for race cars. Later we had a contract from Pontiac
to design and build a mid engine car among other aerodynamic work
on the 71 Firebird TransAm and later Grand Am. When that contract was completed
I sold the company to Mac & Adel Tilton and they moved it to El Segundo CA. Later
they moved it again to Buelton CA where it is now. I went on to other things
such as computers and road test equipment.

Now you know the history.

Paul Lamar
 
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