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Thats an interesting thought Bill, something work looking at for sure.
Jarrett Johnson
www.innovention-tech.com
----- Original Message -----
From: Bill Bradburry <bbradburry@bellsouth.net>
Date: Thursday, May 5, 2011 11:50 am
Subject: [FlyRotary] Re: Back-plate (93-95 Front Side Hsd Needed)
> Don't forget the oil pan helps some to hold the whole thing
> together for
> those of us who don't have the engine sitting on the mounting
> plate. A
> thinner, "defoaming" plate might be a good idea if you are looking for
> something to add stiffness to the engine stack using the Mistral
> design.
>
>
> Bill B
>
>
>
> _____
>
> From: Rotary motors in aircraft [flyrotary@lancaironline.net] On
> Behalf Of H & J Johnson
> Sent: Thursday, May 05, 2011 11:43 AM
> To: Rotary motors in aircraft
> Subject: [FlyRotary] Re: Back-plate (93-95 Front Side Hsd Needed)
>
>
>
> The tension bolts held everything in the Mistral design.
>
> That is my starting point however its not to say that there
> couldn't/wouldn't be some added
>
> hardware across the top to help w/ rotational stiffness as well as
> bendingloads if it is warrented. I could see a such an attachement
> doing several
> things
>
> for the install, from torsional stiffness [takes out some of the
> torqueloads that are currently held by the clamp force from one
> housing to the
> next], as well
>
> as bending stiffness [hard landing load downwards] as well as even
> interfacing w/ an intake system to lend support there as well. At
> thispoint its all
>
> very much in the air [pun intended]. I will end up doing lots of
> modeling,some FEA and possibly going as far as getting an engineer
> to evaluate the
> whole
>
> thing before we're done. :)
>
> Jarrett Johnson
> www.innovention-tech.com
>
> ----- Original Message -----
>
> From: Bryan Winberry <bryanwinberry@bellsouth.net>
>
> Date: Thursday, May 5, 2011 9:30 am
>
> Subject: [FlyRotary] Re: Back-plate (93-95 Front Side Hsd Needed)
>
> > Kelly or anyone else familiar,
> >
> > Maybe I missed it, but what did Mistral do, if anything, to
> > support the
> > engine forward of the mounting tabs? Or do the front plate and
> > the tension
> > bolts bear all the load of the engine, re-drive and prop?
> >
> > Bryan
> >
> >
> >
> > _____
> >
> > From: Rotary motors in aircraft [flyrotary@lancaironline.net] On
> > Behalf Of Bryan Winberry
> > Sent: Thursday, May 05, 2011 11:22 AM
> > To: Rotary motors in aircraft
> > Subject: [FlyRotary] Re: Back-plate (93-95 Front Side Hsd
> Needed)
> >
> >
> >
> > Just got off the phone with Mazmart. They may have one! Will
> > know for sure
> > this afternoon.
> >
> > Bryan
> >
> >
> >
> > _____
> >
> > From: Rotary motors in aircraft [flyrotary@lancaironline.net] On
> > Behalf Of Kelly Troyer
> > Sent: Thursday, May 05, 2011 10:42 AM
> > To: Rotary motors in aircraft
> > Subject: [FlyRotary] Re: Back-plate (93-95 Front Side Hsd
> Needed)
> >
> >
> >
> > Bryan,
> >
> >
> >
> > That would be very helpful..................If you can find
> > one let me
> > know and I will
> >
> > make arrangements with Jarrett about where he will want it sent
> to
> > avoidcustoms
> >
> > and duties as he is in Saskatchewan, Canada.............
> >
> >
> >
> > Thanks,
> >
> >
> >
> > Kelly Troyer
> > "DYKE DELTA JD2" (Eventually)
> >
> > "13B ROTARY"_ Engine
> > "RWS"_RD1C/EC2/EM2
> > "MISTRAL"_Backplate/Oil Manifold
> >
> > "TURBONETICS"_TO4E50 Turbo
> >
> >
> >
> >
> >
> > _____
> >
> > From: Bryan Winberry <bryanwinberry@bellsouth.net>
> > To: Rotary motors in aircraft <flyrotary@lancaironline.net>
> > Sent: Thu, May 5, 2011 9:02:32 AM
> > Subject: [FlyRotary] Re: Back-plate (93-95 Front Side Hsd
> Needed)
> >
> > If Mazmart has one lying around, I could pick it up. I live in
> > the area.
> >
> > Bryan
> >
> >
> >
> > _____
> >
> > From: Rotary motors in aircraft [flyrotary@lancaironline.net] On
> > Behalf Of Kelly Troyer
> > Sent: Wednesday, May 04, 2011 7:09 PM
> > To: Rotary motors in aircraft
> > Subject: [FlyRotary] Re: Back-plate (93-95 Front Side Hsd
> Needed)
> >
> >
> >
> > 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
> > seriouslyconsidering 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
> > designerwith 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..........
> >
> >
> >
> > keltro@att.net
> >
> >
> >
> > 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.
> >
> >
> >
> > I'll keep you posted as this goes and see where we get.
> >
> > Jarrett Johnson
> > www.innovention-tech.com <http://www.innovention-tech.com/>
> >
> > -- Homepage: http://www.flyrotary.com/ Archive and UnSub:
> > http://mail.lancaironline.net:81/lists/flyrotary/List.html
> >
>
>
> --
>
>
>
> Homepage: http://www.flyrotary.com/
>
>
>
> Archive and UnSub:
> http://mail.lancaironline.net:81/lists/flyrotary/List.html
>
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