45 is very reasonable and conservative... its about 1.5 atmospheres (29.92 is standard sea level).

14.7 psi = 29.92" roughly, so about 2lbs per inch.. so.. you should have the world famous SIX INCHES under your cowl, Chris.. when running 3 lbs boost.

By the way Chris.. killed my phone. Text me with your number if you want me to have it again.
Dave

On 11/22/2010 12:04 PM, Chris Barber wrote:

Holy boost Batman. Here I am with three lbs of boost putting me in the low 30's. Nice having someone else pushing the standards. 

Chris

Velocity SE

N17010

Houston

Sent from my iPhone 4

On Nov 22, 2010, at 8:25 AM, David Leonard <wdleonard@gmail.com> wrote:

 

 

I have no knowledge of boosted rotary engines. It is a fad. It will go away.

 

Lynn E. Hanover  

LOL, I have no knowledge either.  But that is a different matter.

 

Thanks for the detailed reply, as expected, only I can choose my level of boost and no one has the magic number of when I will run into problems with detonation.  And who am I kidding by trying to push the limit.  Inching up the power...  If 45 inches is no problem, then 46" is going to be OK...

 

Unfortunately, having "a problem" will mean an engine re-build if not another landing on a road.  So I must set an arbitrary limit and stick to it....  

(drone voice of Homer Simpson): Eight Hundred horse power..

.. No, stick to the boost limit....

...Eight Hundred horse power...

.. This is an airplane, we are not safely on the ground...

..Eight Hundred horse power...

.. Stay away from the light, do not go into the light!

 

45 inches MAP.  That is my final word, That is law.

--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://RotaryRoster.net