Today I had the pleasure to visit the Rotamax plant where I was toured
    around by the RotaMax president Eric Barger. For a number of hours I
    looked at every part they make (which just happens to be every part of
    their rotary engine) and  to ask questions.  Frankly, I was way more
    impressed than I thought I would be.  So in a series of e-mail, this
    being the first,  I will try to describe the Rotamax engine and the
    company too.  But for this first e-mail, here are some teasers.  No
    order, just as I think of them.

    The Rotamax engine is charge cooled and has needle roller bearings
    that are pressure fed oil.
    The Rotamax engine is both side port and p port.  The p port is
    operated by manual butterfly valve.   The engine I was told idles very
    smoothly at low RPM  just using the side port.   I did not see it
    myself but I have no doubt it is true.
    The Rotamax engine has cool side intake.

    The Rotamax engine has no oil sump.  Among other things, this is a
    perfect set up for aerobatics. It has a total loss oil system. In a
    nut shell, oil is pulled from a small tank on the firewall.   It is
    pumped to the needle bearings  which are fully lubricated.  Some of he
    oil travels through the eccentric and flows out of ports to add more
    lube to the inside to the bearings.  From this point the oil is flung
    onto the tip seals where it is eventually burned.  It does not use
    much oil, and it is totally clean.  There is no dirty oil ever in this
    engine.

    The Rotamax is very light weight. The two rotor weighs  130 lbs  No
    [PSRU] drive, "yet".

    The Rotamax is produced by a small, talented crew, that includes a CAD
    driver (Pro E) a couple of machinists,  an engine guy who knows his
    stuff.  They have a room full of cnc lathes, mills, grinders that are
    obviously being used a lot.

    The Rotamax rotor housing is aluminum without a steel liner.  Instead
    it is coated  You can forget trying to find  out about the details of
    this operation--It is something they are not going to share.  Same for
    side housings.  A pair of side housings were pulled after 40hours and
    had absolutely no wear.  No step at all. Housings and ends are ground
    in house.  NICE... NICE... NICE!


    First photo:  Paul do you know this guy ?
    Second photo:  The eccentric before and after machining.
    Third photo:   Beautiful workmanship on the rotor.  Note the seal
    groves.  The three holes are for charge cooling.
    That is it for tonight.  Jerry



Could someone please confirm the weight of the engine?
Photo *P1010022.jpg shows it being held in both arms against your chest.
Is this the **130 lb** engine?
Thanks,
John


http://www.rotamax.net/

According to the web site it is 140 pounds for the two rotor.
Of course that is less PSRU.

Paul Lamar ...No rotor no motor.

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