Subject: Rotary EGT!
From: Rotary Engine
Date: 5/6/2006, 11:02 PM
To: AAme



    >>> Here's a link to a fairly long thread:
    >>>
    >>>
   http://canardaviationforum.dmt.net/showthread.php?t=2058&page=5&pp=15
    >>>
    >>>
    >>>
    >>> I have no idea what is going on Matt. According to Francois
    >>> the unburned hydrocarbons are burning in the exhaust
    >>> manifold and or the turbo. Perhaps the RX8 engine might
    >>> be a better choice as it supposedly recycles unburned fuel
    >>> with a cooler exhaust. Francois is doing some turbine blade
    >>> temperature test by painting the turbine blades with special
    >>> paint.
    >>>
    >>> To really know what is going on the intake air temp should
    >>> be monitored and the engine leaned over a wide range measuring
    >>> the mixture ratio with a wide band mixture monitor to see
    >>> what effect this has on TIT. In other words get data on
    >>> TIT verses mixture ratio. Could be when leaned properly
    >>> with a a cool intake charge to discourage detonation or
    >>> even anti detonation fluid injected the data
    >>> will show the TIT coming down with a leaned mixture.
    >>>
    >>> On the other hand 1800 F may be no problem for an Inconel
    >>> turbine at modest RPMs. Does John have an Inconel turbine?
    >>> One needs to know the RPM of the turbine as that has a serious
    >>> affect on the life of a turbine blade due to centrifugal force.
    >>>
    >>> Paul Lamar ...No rotor no motor.
    >>
    >>
    >>
    >> Hi Matt, where's your EGT probe mounted?
    >>
    >> B
    >
    > Brian, according to John's post about this turbo, about which
   Matt was
    > questioning, John's EGT probe is mounted in the exhaust pipe 2
   inches
    > after
    > the turbine.
    >
    > Barry Gardner
    > Wheaton, IL



   1700*F at 2-3" past the turbine housing is far, far too hot. Just to
   give
   you guys
   an idea of what I do, I shoot for mid 1400's and nothing higher on very
   heavy
   loads that go into the several hundreds of horsepower range. My next
   question:

   What kind of manifold pressure are you running on take-off John? At that
   manifold pressure, what's the amount of advance you're cranking out
   of the
   computer for the leading plugs and then the trail-split timing advance?

   Also, do you guys monitor air/fuel ratios using a 5V wideband lambda
   sensor
   setup?

   B
   ___________________________________________________________________________
   Brian D. Cain -/- Dallas/Ft. Worth, TX -/- bdc@bdcmotorsports.com
   BDC Motorsports | Performance Rotary Engines, Specialized Porting, EFI
   System Installation & Tuning
   MSN bdc196@hotmail.com, Yahoo! bdc196, AOL Symajhi, ICQ# 1733105
   http://www.bdcmotorsports.com -/- http://bdc.cyberosity.com

   You will have to go on the Cozy list Brian. John is not on here
   as I made him fix his motor mount and he got up set over
   that :)

   Paul Lamar

   Paul,
   Sounds like a case of "Don't confuse me with facts, My
   mind is made up!"
   Joel

Yep happens from time to time.

Paul Lamar ...No rotor no motor.

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