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    I have an idea for you Scott.

    There is a water jet company in 1500 Airway Circle, New Smyrna Beach
    FL. 32168 | 386-424-7333

http://www.advmach.com/waterjetcutting.html
Water Jet Cutting at Advanced Machining in New Smyrna ...


Water Jet Cutting at Advanced Machining in New Smyrna Beach Florida.
Waterjets are perfect for creating everything from corporate logos to
the top quality parts you ...


    I have some drawings of a steel coupling that can be made out of
    water jet cut steel parts.

    Then you will need to find a local tig welder to weld it up.

    I have some of the parts. The inner plate that bolts to the counter
    weight and the outer ring cut from six inch tubing.

    $50 plus mailing.

    Use part of Tracy's torque isolator to adapt this to Tracy's PSRU
    input shaft. Drill out the rivets and bolt it to the steel output
    front plate.

    Paul Lamar


Very interesting!  I can query the water jet shop, and will order these
parts if the  shop can make the rest.  No problem with the welder.

How thick is the metal?

Do you intend for an outer ring to be cut into the small curved shapes,
or make these from scratch?  I guess  they can be flat instead of curved?

I also assume the 1.78” is the height of each component, so the total
thickness would be about 2”?  I will study my redrive to look for areas
of potential interference.

Please ignore the curved questions of my last post, sorry. Some of the
latter images didn’t display the first time.  I see the connecting
elements are square.

Thanks!

Scott Gettings

.050 to .150. Some of the stuff is  .083. You make it out of what you
can find :-)
The six inch tubing is about .150 wall.

The total thickness is about 1.8 inches. Nothing about this is critical.
One inches
would work if your not shooting for 500 HP.

Ignore those square pictures. The latest are triangular or wedge shaped.
The square ones bottom out corner to corner. We discovered that when
we built the TTC coupling.

If I get a little more interest in this I wall make a tool that bends
the wedges in
a hydraulic press. Saves a bit of welding. I have built tools like that
in the past.
That would pay off as the same design can be used in new gear boxes.
We already used one of these that was similar in a 3 rotor.

I have not heard back from Kevin so if Kevin finds
an NC shop that can make them out of billet at reasonable cost
that would be more accurate.

In any event once this is welded up it would be wise to balance it between
parallel bars. If your gear box is off the engine please tell me the
diameter
of the input spline adapter Tracy is using. The one with all the rivets.
That will control the diameter of the forward plate.

Paul Lamar


Paul

Can i make you a suggestion, you can made it from an aluminum block and
water  pressure cut all contour for the outer profile without back plate
and the part left cut the inner part, then you do have to cut the front
plate and back plate with holes  reassemble with tig welding, it will be
much more simple. if you have distortion from welding just resurface the
front and back plate on lathe or milling machine and balance

JEAN PRUDHOMME

I think I understand what you are suggesting.

Cut the six wedges out of thick aluminum plate or bar ( say on a band
saw).  Bolt or tig weld them
to a six inch diameter aluminum tube for the front half. For the back
half  bolt or tig
weld them to an aluminum plate.

That will work.

Here is a 3D. All you need is a band saw and lathe.

Great idea Jean.  Thanks.

Paul Lamar




Paul I means use a pce of aluminum round bar or square the proper deed  for the notch plus the thickness of the back plate you will use and cut the outline of your design the outher ring with the 3 stubs togetther and then use a thin aluminum plate as 3/16" or  !/4" thick and cut the bottom plate the same as the inside contour which it fit inside of the first part cutted , then tig weld outside and inside.

Do the same with the other side by using the thick pce left after the first part cut it will fit perfectly as material needed.

Use again the 1/4" plate cut the upper part inside countour for your need od size.

I will make a sketch for part if you send me your dimensions aprox


JEAN PRUDHOMME

OK It is six inch OD and a max of two inches thick.

Here are some of the dims.

Paul Lamar

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