Subject: Junk parts
From: Rotary Engine
Date: 3/27/2007, 10:56 AM
To: AARotary Engine


     >
     > Mark Supinski

    I/we would love to come up and chat awhile. Just let me know when.
    The only
    weekend scheduled so far is SNF.

    What kind of parts washer?

    I have a small parts washer - the pump kind that you put  kerosene or
    mineral
    spirits in and brush the part. What I really need, and am looking
    for, is a
    tank with carb cleaner or some other degreaser chemical that won't
    eat AL or
    copper or whatever the inserts are made out of. We are currently
    using one
    of those one gallon cans of carb cleaner with a basket that you  can
    soak
    small parts in. The rotors and housings won't fit in it, and  whatever
    chemical cocktail is in it does a terrific job of getting the  dirt,
    grease
    and carbon off; makes a long job much shorter. We would like to  soak
    the
    rotors and housings.

    Grandson David found a 5 gal tank with chemicals for $90 on the  net.
    We are
    going to see if we can get one locally. This might be big  enough to
    fit the
    housings in. There is also a 16 gallon one for $407 that is  mechanized,
    i.e., has a mechanical stirrer - but no chemicals. The  chemicals are
    $17 -
    $20 per gallon. Ouch! Judging from the pix, the 16 gallon is  the same
    diameter, just taller.

    Doc Custer
    Retired Software Engineer and sometime Audiologist


    You will need some heavy duty cleaner indeed to clean
    those rotors. They are usually a mess. In fact it takes
    longer to clean the rotors than over haul the engine :)

    Make sure you press those bearing shells out of the rotors
    first as they are affected by many solvents.

    Doc what is the status of the slide throttle parts?
    Are we close to being able to buy them?

    --
    Paul Lamar ...No rotor no motor.



When we cleaned the rotors, we bought a 5 gallon container of the
cleaner.  We removed the entire top & used coat hangars to suspend the
rotors in the chemical.  Worked fine.  Took quite a while -- as I  recall
we left them dangling for 2 weeks or something like that.  But they
cleaned up real nice.  If you want to circulate the cleaner (and  filter
it a bit too) you can steal the idea of bubble filters from a fish  tank
-- stick a plastic dip tube with a bubbler in the chem & have it  lift to
a container with filter medium of your choice before pouring back  in to
the tank.  As long as the cleaner doesn't eat plastic this should  give a
nice explosion proof way to keep the liquid in motion.

I suspect I have the same harbor freight parts washer you were
describing above.  It would never have occurred to me that the cleaner
could eat the washer -- Had I had the washer at the time I would have
dumped the cleaner into it.  Oh well, live & learn.

Happy to test-fit the prototype slide throttles you've whipped up, but
suspect I won't be able to run the engine with it.  My intake manifold
is welded to my existing slide throttle front plate & the odds of the
holes etc lining up are pretty much nil I would guess.

Mark Supinski

No problem Mark. Just cut those tubes off with a hack saw and have
them tig welded to Docs slide throttle. A bit shorter length won't
hurt. The 2 inch hole positions should be near perfect.
Another trick would be convert your plate to a flange (or two flanges)
and bolt it (them) to Docs plate with flat head screws.
I like that idea even better as no tig welding will be required.

With you two guys working together things will happen much faster.
Fortunately you are not that far apart.

Paul Lamar

Doc,
  A while back we discussed making the slide throttle plates egg
shaped for better low RPM control. What is the shape of your version?
Thanks,
Randy



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