Jarrett,

Paul at Mazmart said that a new one was around 500!

So, it looks like we need to find a ruined unit.

I have one more guy I think I’ll call, but doubt he has one.

Bryan

 

 

Bryan, I think for the Iron I'd like to get my hands on one to keep. If it has to be a serviceable one.. that would be 'ok', however the preference [due to cost] would be to get a un-servicable one, granted its not TOO warped or something. I would use this for mock up and assembly testing of the actual mount housing etc.

Jarrett Johnson
www.innovention-tech.com

----- Original Message -----

From: Bryan Winberry <bryanwinberry@bellsouth.net>

Date: Friday, May 6, 2011 11:20 am

Subject: [FlyRotary] Re: Back-plate (93-95 Front Side Hsd Needed)

> Unfortunately, Mazmart did not have a third gen front plate.  They
> mighthave had a serviceable one, but probably didn't want to take
> a chance on not
> seeing it again.  If someone else doesn't come up with one,
> perhaps I can
> try again.  Jarrett, how long would you need the piece?  Or were
> you hoping
> to hang on to it?
>
> Bryan
>
>
>
>  _____ 
>
> From: Rotary motors in aircraft [flyrotary@lancaironline.net] On
> Behalf Of Kelly Troyer
> Sent: Friday, May 06, 2011 2:24 AM
> To: Rotary motors in aircraft
> Subject: [FlyRotary] Back-plate (93-95 Front Side Hsd Needed)
>
>
>
> Marc,
>
>       The Mistral backplate is for a Dynafocal Type 1 , 30 degree
> mountring
>
> which is standard for most Lycoming 0-320 & all 0 & I0-360 engines
> (that I
>
> am aware of))..............The Dynafocal Type 2 , 18 degree mount
> ring was
>
> designed for a specific 0-320 engine installed in the Twin
> Comanche with
>
> an extra 2.5 inch extended prop hub..............This put the
> engine CG
> ahead
>
> the 30 degree mount focal point  of approx 14.25 inches so the 18
> degree
> mount was designed to again put the engine CG slightly behind the
> 18 degree
>
> focal point.............If your Cardinal has the type 2 , 18
> degree  mount
> then it
>
> probably has a 0-320 with the extra pop hub length..........If not
> maybeCessna
>
> got a good deal on this particular 0-320 engine model back
> then.........Ifby
>
> chance your Cardinal has an 0-360 then all bets are off as I
> haven't heard
>
> of a 0-360 model with the Type 2 , 18 degree mount............<:)
>
>
>
>     As for the 93-95 13BREW front side plate Bryan may have found
> us an
>
> unserviceable one............We will see............As many of
> these engnes
> that
>
> have been over-heated , over-boosted and over-reved we should be
> able to
>
> come up with a junk one.............
>
>
>
> Thanks Marc,
>
>
>
> Kelly Troyer
> "DYKE DELTA JD2" (Eventually)
>
> "13B ROTARY"_ Engine
> "RWS"_RD1C/EC2/EM2
> "MISTRAL"_Backplate/Oil Manifold
>
> "TURBONETICS"_TO4E50 Turbo
>
>
>
>
>
>  _____ 
>
> From: Marc Wiese <cardmarc@charter.net>
> To: keltro@att.net
> Sent: Thu, May 5, 2011 8:40:02 PM
> Subject: RE: [FlyRotary] Re: Back-plate (93-95 Front Side Hsd Needed)
>
> Kelly,
>
> I also have a type II dynafocal engine mount (from a Cardinal RG!)..
>
> Marc
>
>
>
> From: Marc Wiese [cardmarc@charter.net]
> Sent: Thursday, May 05, 2011 8:37 PM
> To: 'Rotary motors in aircraft'; 'keltro@att.net'
> Subject: RE: [FlyRotary] Re: Back-plate (93-95 Front Side Hsd Needed)
>
>
>
> I may have one of those 13Brew "front plates", but it is "useable".
>
> I too would like a dynafocal type II mount...for both of my
> 13Brews and the
> 20B.
>
> Marc
>
>
>
> From: Rotary motors in aircraft [flyrotary@lancaironline.net] On
> Behalf Of Kelly Troyer
> Sent: Wednesday, May 04, 2011 6:09 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/> 
>
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