To The Rotary
Group,
Yes I
know I am a troublemaker (too much computer time
available with my day job) and some of you are probably
sick of all my posts !!.............."But" with that
being said one of our group is seriously considering the
development of a "Mistral" type
back-plate to
allow the use of a standard "Lycoming" "Dynafocal type
1" engine mount ring that will be a virtual "Bolt-on" to
the
93-95
13BREW , Cosmo 13B & 20B and the Renesis 13B
Rotarys.............Several builders and potentials have
indicated they
would be
interested in such a back-plate (including
me)............I have one of the few "Mistral"
back-plates that ended up in the
hands of
experimenters (waited 2 years for it)..........It is
severely over engineered for our use (and overpriced)
and has many
features we
do not need...........
If you
have followed "Back-plate" string of posts recently you
know that Jarrett Johnson one our group with aspirations
to
install a
Cosmo 20B in his project started the discussion first
about an developing an intake manifold for 13B & 20B
Rotarys
(which needs
to be done also) then I jumped in and said that a
common engine mount design might also be needed and if
you have been
reading the posts lately a lot of info has been kicked
around about the various Rotarys and what it will take
to "Marry" the "Mistral" back-plate with a "RX8
"Renesis" water-pump (with the magic of digital scanning
& CAD) to design
such a
back-plate.........
Those
that have been on the Rotary forum for several years may
remember Jarrett posting his trials and tribulations in
building a
huge CAM mill (at home).............He is a commercial
designer with the talent and equipment (including
foundry)
to pull this
off............I have offered my "Mistral" back-plate to
be scanned (He trying to find someone here in Okla to do
the job) and
I also have a "Renesis" front cover to
scan............What we really need now is a 93-95
13BREW front side
housing
(unusable condition preferred as long as front side is
undamaged) to put in his hands as this is what the
back-plate
will bolt
to..............If someone in the group has an unusable
93-95 13BREW front side housing they will donate I will
pay
to have it
shipped to Jarrett..............You may contact me off
the forum if you would prefer..........I have no horse
in this race
I would just
like to see such a product be made available to the
group..........
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_
Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50
Turbo
From:
Kelly Troyer <keltro@att.net>
To:
Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent:
Tue, May 3, 2011 11:45:09 PM
Subject:
[FlyRotary] Re: Back-plate
Jarrett,
Will be a good idea to scan both the Mistral and
Renesis housings.............You really need
a 93-95
13BREW (preferably) or Cosmo 20B front housing to
scan.............Most of my 13B
engines
are 86-91.............My Cosmo 13B is adaptable
but lacks some of the machined bolt
and
stud pads of the 13BREW, Renesis or Cosmo 20B
front side housing which you need
to make
allowances for on the redesigned back-plate if you
want it to fit all three versions of
these
engines..................Throw this out to the
group and see if someone has a 1993-95
13BREW
front side hsg (need not be usable) they would
donate or lend to the project.........
You
really need this front side housing in front of
you......... Even with all the scans nothing
beats
having the actual hardware............IMHO
Best
Regards,
Kelly
Troyer
"DYKE DELTA JD2" (Eventually)
"13B
ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50
Turbo
From:
H & J Johnson <hjjohnson@sasktel.net>
To:
Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent:
Tue, May 3, 2011 10:43:03 PM
Subject:
[FlyRotary] Re: Back-plate
Evening
Kelly, so just thought I'd send a note w/ an
update. I did find a fella in Tulsa who has
access to a laser scanner. He's getting me
some pricing
on
what it would cost to get the job done. I'm
thinking it might be a good idea to get both
the Mistral housing as well as a Renisis Front
Cover scanned?
I'd
like to get an Iron [preferably the side that
mates to the front cover] scanned as well but
don't know if you've got one handy [as in, not
'in' an engine]. I could always
do
it here in time but that might take a bit
before I get my hands on one that is not in an
engine.