Sorry for lack of detailed info; I was
away from home & pecking at my phone to reply.
Wayback machine:
https://archive.org/web/
Tracy's old website was:
http://www.rotaryaviation.com/
which no longer has aviation info on it (currently only car
performance parts under different ownership).
But, by plugging it into the wayback machine and picking a date
(blue highlighted days), you'll get something like
https://web.archive.org/web/20110423034131/http://rotaryaviation.com/
Click on the 'rvotter' (RV-4's name) link on the left, then
'renesis engine' link on the left, to get to
https://web.archive.org/web/20111028001512/http://www.rotaryaviation.com/renesis_engine.htm
Page is in reverse chronological order. A little over halfway down
the page, there's a pretty good pic of the intake with the cover
off. Read *all* the text on the page; some changes were made after
the pic.
Just in case you aren't familiar with intake design & 'hot
rod' techniques...
If you build a 'box' like he did, don't assume you can build an
aluminum plenum box like I did; I knew better & just forgot
that intake vacuum and dynamic pulses will destroy a simple box
very quickly. Either build it out of plywood or from round tubing
stock. Second, don't omit the 'velocity stacks' on the tubes.
Length is basically the longest you can fit in your cowl without
using bends in the tubes. Tracy told me that his is just 'coming
on the pipe' at up around 7000 to 7500 rpm with ~11" length from
block to flair. Something like 19" would be best for ~6000 rpm,
but that's tough to do without bends, which restrict flow. IIRC,
mine in the -7 are about 12" (haven't started the engine yet).
The page on the -8 20B is at tests/projects>rv-8
project.Unfortunately, the 20B intake pics must have been linked
to another site, and the link is now broken. Try different dates
& you might find a page that will load all the pics.
Charlie
n 4/10/2016 10:48 PM, Jarrett Johnson wrote:
Thanks for the link Doug. Those are some great pictures. It's
interesting to
note that regardless of the various changes the performance
didn't improve. I
like the simplicity of the 5.0L throttle body for a butterfly.
Neil, I've liked the P-Port for some time but have wondered
what percentage
of projects are leaning that direction? No doubt it's the best
performance
solution and certainly the simplest intake system vs the
multiple port
configurations that have existed over the years. If there was
enough interest
this might be my best option for the initial development.
Charlie, I did a quick google search but didn't come up with
too much in the
way of data. I've got Tracy's book and will do some more
internet searching as I
go forward researching things.
Thanks for the input guys, it's greatly appreciated!
Jarrett
On Sun, 10 Apr 2016 13:33:27 +0200, Doug Lomheim
<flyrotary@lancaironline.net> wrote:
Sam
Hodges won Best Auto
Conversion at SnF and posted a nice shot of Rose and himself
on his FB
page!
Bill Eslick has
some of his intake
manifold “trials and tribulations” posted on his web site
with pictures
of his three different iterations if anyone needs some
ideas. I bought his 3rd
Version from him a few years ago when he was installing a
Lyco-saurus in
his “6”.
Cheers
Doug Lomheim
RV-9A 13B FWF
(Hopefully will
finish it in 2018)
RV-3A
(restored, flown,
sold)