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From: "Joe Berki" <jskmberki@alltel.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-1367049@logan.com>
Subject: Re: [FlyRotary] Re: Departed Exhaust
Date: Thu, 7 Sep 2006 18:07:02 -0400
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Buly,
My engine mount is not like any and is tapered to meet the narrow fuselge of
a Long EZ.  I probably should of did the oil pan plate sandwitch thing.  So
.065" thick is the ticket.  Do they make slip joints for that type of tube?

Joe Berki
Limo EZ

----- Original Message ----- 
From: "Bulent Aliev" <atlasyts@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Wednesday, September 06, 2006 10:27 PM
Subject: [FlyRotary] Re: Departed Exhaust


> Joe, why are you rebuilding your engine mount? The pipes that cracked
> up were 0.049" thick and welded solid. Next ones I will make from 2"
> and 0.065 material with slip joints. Cast manifold from NA engine and
> than single pipe crossed my mind too, but the sucker is very heavy.
> Again, you have engine mount like mine. Why are you modifying it?
> Bulent "Buly" Aliev
> FXE Ft lauderdale, FL
> http://tinyurl.com/s5xw8
>
>
> On Sep 6, 2006, at 9:48 PM, Joe Berki wrote:
>
> > Buly,
> > I am glad that you are safe.  What dimensions on the exhaust pipes
> > need to
> > be changed?  I am wondering ir the cast iron exhaust might solve
> > some of
> > thes issues.  Unfortuntly I will need to modify or build a nes
> > engne mount.
> >
> > Joe Berki
> > Limo EZ
> > Canard in primer
> >
> > ----- Original Message -----
> > From: "Ed Anderson" <eanderson@carolina.rr.com>
> > To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> > Sent: Wednesday, September 06, 2006 7:57 AM
> > Subject: [FlyRotary] Departed Exhaust
> >
> >
> >> Hi Buly, great to hear about your flight and happy to hear the
> >> missing
> >> exhaust component did not cause damage - however, I would inspect
> >> the prop
> >> blade very closely to make certain no small cracks in blade -
> >> particularly
> >> near the hub.
> >>
> >>  Yes, I have pulverized sufficient metal by trying different exhaust
> >> internals to say that the shock of the exhaust pulse particular
> >> with a
> > turbo
> >> block is tremendous.  I have destroyed 1/8" thick stainless steel
> >> in a
> >> matter of hours.  It appears that if a exhaust component is
> >> perpendicular
> > to
> >> the front of the shock wave, the impact on the component is such
> >> to reduce
> >> its life to almost nil.  If the component is at an angle then its
> >> life is
> >> much longer.  The constant flexing of the metal at 200 times/sec
> >> at 6000
> > rpm
> >> caused by the strong exhaust pulse fatigues the metal extremely
> >> rapidly.
> >>
> >>  The joke around my airport is "You can hear Ed long before you
> >> can see
> >> him!"  - my response is that its a safety feature to let others
> >> know I am
> > on
> >> my way inbound{:>).
> >>
> >> Ed
> >> Ed Anderson
> >> Rv-6A N494BW Rotary Powered
> >> Matthews, NC
> >> eanderson@carolina.rr.com
> >> http://members.cox.net/rogersda/rotary/configs.htm#N494BW
> >> ----- Original Message -----
> >> From: "Bulent Aliev" <atlasyts@bellsouth.net>
> >> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> >> Sent: Wednesday, September 06, 2006 7:17 AM
> >> Subject: [FlyRotary] Re: OT: Gardenhose as level
> >>
> >>
> >>> Joe, it was a "shake down" alright with an exhaust problem like
> >>> yours.
> >>> on Sat we did some takeoffs and landings with the CFI Ron
> >>> Miller.  With
> >>> gross weight of 1850 pounds, on takeoff I'm getting 6500-7000
> >>> rpm and
> >>> climb rate of about 1000 fpm. Than we went to 1500 ft over  the
> >>> airport
> >>> and i did some steep turns etc for about 40 min. It flies  like a
> >>> dream
> >>> (compared to C-172 :). Transponder did not work again.
> >>> Next day we got a waiver for the transponder and headed to an old
> >>> uncontrolled military field with two huge 5000 ft runways, so i can
> >>> practice landings and takeoffs. So we took off and headed for our
> >>> destination at 3500 ft over alligator country. Pulled back the
> >>> power  to
> >>> 5000 rpm and we were cruising at 140 knots. Nothing spectacular,
> >>> but i
> >>> kept the prop at low pitch to go easy on the engine. 15 min
> >>> later, we
> >>> heard a bang and the plane felt like we run over a rock.  First
> >>> reaction
> >>> look for a place to land. But soon everything checked  out and the
> > engine
> >>> kept running normal with temps at 185-187F degrees  with OAT at 85F.
> >>> Landed OK at our destination and taxied to the FBO.  Ron got out
> >>> first
> > and
> >>> started looking, but can not find anything  wrong? I got out and
> >>> noticed
> > a
> >>> slight scuff like a drag mark 3" wide  on one of the Ivo blades
> >>> starting
> >>> about where the exhaust would be  and going to the tip. The las oval
> > piece
> >>> of my shiny new exhaust was  missing. Mystery solved. Ivo is a
> >>> one tough
> >>> prop to survive a 3" long  3" diam. SS pipe going hitting the
> >>> blade.  We
> >>> continued with the  training and I was getting good at it but
> >>> with lots
> > of
> >>> full power  takeoffs and not enough time for the engine to cool
> >>> down,
> > some
> >>> of the  coolant boiled out on takeoff and we came down to replace
> >>> to add
> >>> more  coolant and check under the hood. Added some water, cleaned
> >>> the
> >>> plugs, just in case and took off again.
> >>> By now it was a sweltering heat with jungle like humidity and
> >>> after  few
> >>> landings, we headed home. The trip was uneventful, the engine was
> > running
> >>> fine around 5000 rpm. The biggest surprise later was after I
> >>> removed
> > the
> >>> SS heat shields from around my new exhaust pipes. one  pipe was
> >>> totaly
> >>> separated at the weld, another was half cracked.
> >>> Sound familiar Joe:) The exhaust pulses must be ferocious? people on
> > the
> >>> ground said they can hear me long before they can see me coming:)
> >>> More later. Got to go to work.
> >>> Bulent "Buly" Aliev
> >>> FXE Ft lauderdale, FL
> >>> http://tinyurl.com/s5xw8
> >>>
> >>> On Sep 5, 2006, at 11:47 PM, Joe Hull wrote:
> >>>
> >>>> OK - it's supposed to be "Shake down cruise" - don't tell me
> >>>> you  broke
> >>>> down
> >>>> somewhere!!
> >>>>
> >>>> But congrats on flying it anyway!!
> >>>>
> >>>> Joe Hull
> >>>> Cozy Mk-IV N31CZ (65 hrs - Rotary 13B NA)
> >>>> Redmond (Seattle), Washington
> >>>>
> >>>>
> >>>>> -----Original Message-----
> >>>>> From: Rotary motors in aircraft
> >>>>> [mailto:flyrotary@lancaironline.net]
> > On
> >>>>> Behalf Of Bulent Aliev
> >>>>> Sent: Tuesday, September 05, 2006 8:20 PM
> >>>>> To: Rotary motors in aircraft
> >>>>> Subject: [FlyRotary] Re: OT: Gardenhose as level
> >>>>>
> >>>>>
> >>>>>>
> >>>>>> Guess I need to buy some expensive clear hose .....
> >>>>>> Finn
> >>>>>
> >>>>> Finn, if you buy the right size, one day you can used for your
> >>>>> fuel
> >>>>> lines on the next airplane. Worked very well on the first one :)
> >>>>> Buly
> >>>>> Finally checked out in my plane.
> >>>>> Did my first 100 mile "cross country". Or should I say "break down
> >>>>> cruise" :),
> >>>>>
> >>>>> --
> >>>>> Homepage:  http://www.flyrotary.com/
> >>>>> Archive and UnSub:   http://mail.lancaironline.net/lists/
> >>>>> flyrotary/
> >>>>
> >>>>
> >>>> --
> >>>> Homepage:  http://www.flyrotary.com/
> >>>> Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/
> >>>
> >>>
> >>> --
> >>> Homepage:  http://www.flyrotary.com/
> >>> Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/
> >>>
> >>
> >>
> >>
> >> --
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> >> Archive and UnSub:   http://mail.lancaironline.net/lists/flyrotary/
> >>
> >>
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> >>
> >
> >
> > --
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>
>
> --
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