Subject: subscribe-rotary twin
From: Rotary Engine
Date: 6/4/2009, 3:03 PM
To: AAA Put this in the To box


   Dear Paul, I am glad to have
  found your rotary site. I am
  building a very
  unusual  twin rotary amphibian. Where can I get
the
  all aluminum  rotary
  engine?  Please add me to your newsletter. I
want to
  subscribe. James
  whitehurst

  Racing Beat sells the housings.
  http://www.racingbeat.com/

  Mazdatrix builds the engines. I suggest a P-port
version.
  http://www.mazdatrix.com/


  Paul Lamar

  Paul,

  No engine part details are online.  Do you
really have
  to buy
  the Racing Beat Catalog's  PDF for $8.00 to get
the
  'catalog'?
  $6.55 for the catalog, and a $1.98 bandwidth
'fee'?  Or $8.00
  (shipping fee) to mail the catalog $14.52 Total?

  Sheesh....
  thomas walter

  I'll pass this on to the RB owner. The housing are
about
  $1200 each
  and you will need three. It's kind of like; "If you
have to
  ask the cost
  you can't afford them" :)


  Paul Lamar



      Paul,

 They also have a 'down load and print' form so you can get
the
 printed catalog for $10.00

 When you talk to Jim, tell him Hi for the old "Sacramento
 Rally Gang". We had RX2, RX3, that GLC rotary powered
"generic" car -
 Rod Sorenson built that one, including the (in)famous
 exhaust over the top RX2.  We're some of his early
customers
 (1970's).  I had gotten a set of 'templates' for our
first
 bridge ported motors, and ran that 12A at 10,000 rpm
without
 missing a beat (Racing Beat gears!)

 $3600 for the three end housings really isn't that bad.
 Any idea how much weight it saves? Guess is 80 pounds,
 but would like to know as that is a heck of good way to
reduce weight.

 Tom

 My guess is they save close to 70 pounds.
 Not significant for most kit planes as the iron engine
weighs
 about the same as a Lycoming 180 HP engine.  The 250
HP p-port
 cast iron version weighs a lot less than any 250 HP
 aircraft engine. These A/C engines are usually six
cylinders.
 The stock iron p-port rotary engine pays off big time in
this scenario.

 Paul Lamar


70lbs is 70lbs is a lot..  Offsets the weight of a
constant speed
prop.  Lowers vibrating mass.  Opens the door for
putting a rotary on
a much smaller/lighter airplane.  I'd consider an all
Aluminum rotary
on my Varieze, as one could probably be built that has an
all-up
weight similar to an O-235.  200hp would make a 600lb
Varieze into an
exciting performer.  If you kept it simple -
carburetor, basic
ignition, the cost probably wouldn't be any worse than the
aircraft
engine it replaced.

A _new_ 250 hp aircraft engine is about $30k..  $3k
buys 3 (of the
required 6) new cylinders that are part of such an engine.

Long term durability remains the question..  Then
again, Continental
and Lycoming have both recently had AD's and recalls that
require
replacing either cranks or cylinders or other major
components.  The
federally blessed parts may not have particularly good
durability.  If
the the Racing Beat side housings consistently last 1500
hours in
aircraft service, they aren't a terrible value.

I hear you though Paul..  A cast iron side housing
(stock) rotary
offers tremendous value and performance, compared to
_anything_.


Matt-

I paid online for a RB catalog over 2 months ago and have received NOTHING.
C. Smith

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