OK folks here is your chance. The site is up.
www.thecarricos.com\ACRE
I went to the site and was able to copy the papers I was interested it.
Note. Even though I have a high speed connection, it does take a while
for
the .pdf files to load (like several minutes). With IE I use the "Open
an
another Window" command and check back later and their the pdf file is.
Thanks
Ed Anderson
Check back with me after you read those papers and let me know
if you have it yet :)
Paul Lamar
Exciting reading, Paul! Even tried discussing some of it with wife, until
she turned glassy eyed. Getting closer to having it, will let you know firs
t when I do {:>)
A few bits of separate data/information I had are now beginning to fit
together where they did not before. I had been concentrating so much on the
"dynamic" supercharging process, I had neglected to note the purpose and
effect of the six port auxiliary ports on high rpm breathing and torque.
Really appreciate you making your papers available. The two I find most
interesting are the 1984 and 1990 papers on the power development of the
engine, the material ones are interesting and informative, but not as
interesting as the ones on the power development. Some interesting
information on the two different turbos used and their differences also.
Got my resin in today, so provided the temp gets up to 77F tomorrow, I
should have a combination plenum/injection boss/throttle body mount by
tomorrow night. Be interesting to see how it turns out and what it weighs.
Best Regards
Ed
Yes the 84 and the 90 are the best for dynamic chambers but don't
forget to factor in the data in the 92 Lemans paper. Did you down load that?
I have about half a dozen more that I did not convert to pdf and upload.
Plus there is a lot of stuff in the 1981 book Rotary Engine.
I think what you are really building is a dynamic chamber. Perhaps without
realizing it :)
There is one thing about the dynamic chamber that should be emphasized.
As you shorten it to bring the low RPM point up in RPM more
in line with the aircraft cruise RPM for good BSFC you raise the upper
tuned point much much higher. The high RPM number is always twice the low
low RPM number. Consequently a dynamic chamber with fairly
short runners tuned for 4500 cruise will have a top tuned
RPM of 9000 RPM. You will never get there with a 2.17:1 PSRU
and a 68 inch prop so you will see a dip in the HP at 6000 RPM.
Tuned for 5000 RPM the top end is 10,000 RPM.
Your best bet is make it as short as possible and hope
the broad torque curve advantage of the dynamic chamber
WHEN IT IS WORKING AS A DYNAMIC CHAMBER covers adequately
both cruise RPM and top end power RPM.
It is within your power to do that Ed and I am hoping
you will try it. You will know, long before you get to the
point on the runway where you can no longer stop, whether it
is working or not.
Paul Lamar
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