> Paul: You, any one else, ever look at RB's aluminum end and center
    > housings
    > and wonder how much trouble to machine out of solid aluminum
   billets for
    > PPort engines? After all, they won't need intake ports in them.
    > jofarr, soddy tn
    >
    >
    > Can't be done because they are hollow. Now if somebody invented
    > a tiny robot milling machine that you could put down a small hole
    > and have it mine out cavities in the material that would work.
    >
    > No intake ports would certainly help.
    >
    > If you made them in two pieces that would also work if you could
    > figure out a way to seal the internal joints. Could be done with
    > some sort of gasket or O-rings and that is exactly what Richard
    > Sohn is working on.
    >
    > Paul Lamar ...No rotor no motor.

   Well, maybe great minds do run along similar tracks; but, then again, I
   can't help but wonder why it occured to me also<g> The idea of doing two
   sides and sealing together or just drilling, milling and making oil and
   coolant paths where necessary, plugging where necessary as well and
   going
   from there; or, even doing thin steel sheets to fit over aluminum center
   section or even furnace braze all stamped steel for each housing
   just seems
   well worth while for those more talented than I.

   jofarr, soddy tn


The hollow section is done using plaster like material mould with latex
or rubber mould. Then the Cast Iron is poured. What you can do is cut a
housing in half, and use it as a female mould. Then the plaster mould is
moulded inside the aluminium housing. Then water can be used to dissolve
the plaster like material (paraplast). This should be heated to 600F and
then poured in the mould.

Roderick
Was in Malta and now in Boston




The Rotary Engine NewsLetter. Powered by Linux.
ACRE NL web site. http://www.rotaryeng.net
Copyright 1998-2006 All world wide rights reserved.