Subject: flex plate damper mockup
From: Rotary Engine
Date: 12/20/2011, 3:37 PM
To: AAA Put this in the To box




 Hi Paul!

        Here's a couple pics of the acrylic damper assem mockup.
     Presently,   the  original 6.9" diameter for the damper section
     looks to be a  little too  small when using the 1/2x1x7/8
 blocks,   as   there is  conflict with the large  washer ring. The
 image shows   the blocks    standing on their 7/8 side, instead  of
 the one inch   side, and it's    still a bit too large.

        What do you suggest is the next step?

        Ed Carver

        Looking good Ed.

        The shaft project has run into a snag. I need to get the
     material back.    Michael that owns all those big lathes was
   forced   to get a full  time  job to pay the bills. He just was
 not  getting     enough biz to  keep the  doors open. I'll see if I
 can get in   touch   with him  tomorrow after  his work. I may be
 able to cut   them to   length with a  carbide chop  saw I have. Jim
 thinks he can   do it   with his lathe.  Just not as fast  as Michael.
        ------------------------------********------------------------**
--**--**
    --**-----

        As to the flex plate what rubber blocks are you using?
        I assumed we would use custom molded rubber blocks to fit.

        At least that is what I said in an old message in Sept.

        -------- Original Message --------
        Subject: Gear box pictures
        Date: Mon, 19 Sep 2011 16:08:01 -0700
        From: Rotary Engine <rotaryeng@earthlink.net
        To: AAA Put this in the To box <rotaryeng@earthlink.net

        lots of snips....

        "Now it is possible to design the concave rubber blocks with
 enough        expansion        clearance so no axial force will be
generated."

        ------------------------------********----------------------

        OK I think I have it figured out. What you are saying is the
 1"     by  .5"  rectangular tubing  is too big to fit the 6.9 inch
diameter
     and  the stock steel clamp ring.

        I probably made a mistake on measuring the clamp ring diameter.
      What  number do you  have on that?

        We can do one of two things. Cut down the clamp ring plate
 in a      lathe or  go up on the 6.9" dimension  slightly. What do
 you think?

        Paul Lamar

      It's why we made a mockup. The ring diameter is odd in that it
      extends outward past the bolt centers more than it does inward.
      Seems natural move the diameter out at least .200". The ring is
      5.115" OD.

      Is there in the plans something to contain the rubber on the inside
      diameter of the .5x1" blocks? The spline plate inward extension
     will  ride about .100" off of the e shaft.

      The spline plate as shown in my photo does not have the OD cut
 down      to your spec. That is because I am not sure if I will use
 it. I   am    going to use a longer input shaft, and hence, a different
   spline plate.

      Gotta do what you gotta do Michael. I'd be in the same boat if
 it      were not for the mass of old porsches and parts I collected over
     the  past 25 years. Even with the bust of the Euro, Germans
 still     want  their lawn mower engine powered old 911's back. (I
 will always     tease  porsche lovers because they whine too much
 when they lose   at the    track) ;)

      A chop saw will easily cut the alum shaft material. I may be able
     to  get the shaft bored in the EAA hanger. We have a couple lathes
     in  there, but they are on the small side and I would need to create
     some sort of bearings to hold the shaft at it's longest
 extension     out from the chuck.

        Perhaps Michael can do it as a side job. Can 4.5" material
 fit      into the bore of that chuck? The easy part for him would
 have   been    turning the housing, which has a much larger
 diameter. That   part is    probably out of my size range because it
 it too long for   my mill.

      Ed Carver

      To cut it down to fit it must be 4.750" dia..

      What we have going for us is the large 4130 plate is .096 thick
      while the mild steel stock plate is .062" thick.

      I'll try to have another talk with Michael today.

      Here is flex plate rev 4 with with a 7.586 diameter.

      We measures Jim's chuck and we can get 4 inches in there no problem.

      Things are getting hectic around here so after Christmas is going
     to  be it.

      We have a pack of relatives staying with us.

      Paul Lamar

     Ed,

      If you want to have fun with the Porch guys, stuff a GM LS3
 into   a   Beemer3. Use the T56 trans from the Firebird/Camaro and
 the diff    from a Beemer V12 car. With a bit of port work, a cam
 change and   tune it is 525HP at the rear wheels. Scare the hell out
 of the Porch    and blower Mustang guys.

     Dale Davies

     How about a 690 HP p-port 4 rotor?

     Paul Lamar

     Yup, that would do it all right. The Government Motors engine
   might be a  bit  more torquey though for street operation. How would
   the four rotor engine  length be compared to the LS3? No problem
   installing in the Beemer as you  remove the I6. They tell me the
 LS   takes 50 pounds off the front end as it  is  all aluminum and
 shorter than the I6 engine that has a cast Fe block, so it  actually
  handles better.

    Dale Davies

    It is about the same as LS1.

    Max torque is 442 ft pounds at 6200 RPM. Do you want to tow or
 do you    want to go? :)

    Paul Lamar

   Well Dale, I have a llittle bigger aspirations, than that government
   engine. And as far as the T56 goes, that's old school now. I just
   sold the viper version i had. I wanna PDK 7DT doppelkupplung,
 based   on the original twin clutch used in the 962C. Should be able
 to get   one soon from a crashed panamera. It'z amazing how some
 monied folks   love to crash their porsche. Just another fact of the
 civilized world.

   4 rotors are too much, gotta make em think they can actually beat
   ya; so a built 3 rotor turbo should be sufficient when coupled
 with   a 7DT in the back seat of a 2200lb 914 porsche. And BMW?
 BringMoneyWith, cause you're gonna need it when you lose.;)

   I now consider myself a reformed engine enthusiast. Thanks to
 Paul,   and the rest of y'all. So long to the ford/chevy
 controversy. Never   owned a government car in my life. As long as
 we throw the bumdeal   president out of office next Nov., we should
 all be able to expand   developing these rotary things out to their
 true potential.

   Governmental tyranny will soon be extinct.
   Light the candles again!
   Happy Hanukkah!

   Ed Carver

   I am beginning to really like Ed :)

   Paul Lamar

   How is the length of the 20B compared to the original boxer 4?
 Might be a  bit  tight. A little grease on a shoe horn has been used
 before :-)). Even a 13B  turbo p-port would be a rocket. 914 6 would
 take the 20B no problem due to  a  longer back for the Porsche lawn mower.
   Used Beemer 3's are reasonable in price. One fellow in Calgary
 has a  fordor  that beats blower Mustangs regularly. They go to the
 Porch track days and  lap  faster.

  Dale Davies

 You should visit the porcha club endurance events at night at Willow
 springs in May, just so you can see the fire come out of the exhaust
 on the old turbo 911s that use the original K-Jetronic injection.
 Talk about money to burn. Guarantee ya, there would be no era
 correct stock bodied 3 series bimers puttn a pass on a built up
 944/968 turbo going around turn 8.

 Its all in fun though ya know. Tons of money, club racing at it's best.

 Ed Carver



Like watching the 917 30K's at Edmonton. Good flame thrower backing off
for a
corner. Donohue in the Penske car leading. Jody Sheckter removed a 5.0l
engine
on Saturday night and put the new 5.4l engine in for the race. Spent the
Sunday AM practice learning where he could put the power down. The German
mechanics were talking in German and swearing in English. I corner
marshelled
there in the '70s.

Dale Davies



O gawd that must have been fun. I was 12 when I got my first sight of one.
They had gigantic turbos on those things.
Something more than 20 years ago, a friend told me to go test drive a 944
turbo. I could'nt stop driving it for about a year. Never could have
imagined how well one of those cars worked beforehand. Made me a Porsche
enthusiast overnight. Went out and bought all of the related race car
history books shortly thereafter.

Now I wanna fly fast and high. The cozyIV should do it for me.

I just started cutting the 4130 plate for the damper. Should have it all
cut tomorrow. Then I'll create some sort of jig for the welding part. I
plan on using the original flywheel and rolling the edge of the 4130 like
the original where it meets up with the ring gear.

More pics coming soon.

I believe a 20b is a little shorter than the air cooled 911 engines that
are used in the 914. We'll see though.

Ed Carver



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