X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from nm1-vm0.access.bullet.mail.sp2.yahoo.com ([98.139.44.94] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with SMTP id 5084067 for flyrotary@lancaironline.net; Sat, 06 Aug 2011 13:43:16 -0400 Received-SPF: none receiver=logan.com; client-ip=98.139.44.94; envelope-from=keltro@att.net Received: from [98.139.44.105] by nm1.access.bullet.mail.sp2.yahoo.com with NNFMP; 06 Aug 2011 17:42:39 -0000 Received: from [98.139.44.84] by tm10.access.bullet.mail.sp2.yahoo.com with NNFMP; 06 Aug 2011 17:42:39 -0000 Received: from [127.0.0.1] by omp1021.access.mail.sp2.yahoo.com with NNFMP; 06 Aug 2011 17:42:39 -0000 X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 731270.31574.bm@omp1021.access.mail.sp2.yahoo.com Received: (qmail 59958 invoked by uid 60001); 6 Aug 2011 17:42:39 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=att.net; s=s1024; t=1312652559; bh=ci62oX9qoThK46O7SOQ2tqx1ZLyJNiyChpOpcTlTxUg=; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=2N4CLWrmzjQgVhmEk2BBWRZlBT8FHCsj7ls3Dlr0yCM9+y96I88NcYvmZsb1yRGK378uugDe/Xje0NOVuzrxI7JMc1Owh2q7/+L3guvDEJXMdBEgy3W2o3hhrhH4s4/hof5VxBySQpW0t5YOJF9IeIVmiE8NzwvaO6o16+M1FVw= DomainKey-Signature:a=rsa-sha1; q=dns; c=nofws; s=s1024; d=att.net; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type; b=GrzQVmu39pHJFp+RE1zwDIVS5ur9kMGkFIK+WhzaPdoQ2Y4W6IR0NlwbBLuL7oTwr+XGfPSQ+Sgj4nBvfQ+kQ7PeblAj4Go8nGTXgGbzx7JKbXN1A0jDt7f96U3IYKUd0y/FjLjOAmre79N3Pot2NpcZOKznaL4xPB3FlSX5X6U=; X-YMail-OSG: y13sdPwVM1koYkN2KH8GtKsnVm4J7sckGz9szhFVIyWyPfD OdLRNFd272Z2ltCdKY9zW_rPUFNtLHAcnKRhscxsLqmVJv1tRZ7Qu9pxdhUg YUKAf4xeHyxzQa7lmjqq5W3mmfJFyCqNZDs3nVHrYju.7SO0Dqlu30Hjj_fo TpqhXTurR__SXANH2FIcoMr5l73xrU_hJX1pXq.vOYMypCtG.XQwHtruNv_y gBN44ErO0yet597b2.U6j5rN8fmZUNn4Eg6NbjnRQXaBjCLeQTdAuigw61qL b1MMnTrEpDHD4fsTxhtuo2TQIfbB9sUPjNLkzQuDbQ6hTKmUjw_FTj1lMRYV Lo6IvNsdswvAMoEOC7Wj91MWqCrjrsiPAuYh5OlJnFW75rCxxZRwZUMf9lK5 xiYyB64l7eQ9sLqQum6VEoSwXrx5pDd_IHGglSebdghulg7gms2twC7pEXhk iIfyb2SR6FBk1Cd7WKGNLRoUxXThJtSj2C5Bsga15d5XNa8t4k4ssdx2SOdB Zp.PFri1xyxnupg-- Received: from [208.114.39.18] by web83902.mail.sp1.yahoo.com via HTTP; Sat, 06 Aug 2011 10:42:39 PDT X-Mailer: YahooMailWebService/0.8.113.313619 References: Message-ID: <1312652559.59565.YahooMailNeo@web83902.mail.sp1.yahoo.com> Date: Sat, 6 Aug 2011 10:42:39 -0700 (PDT) From: Kelly Troyer Reply-To: Kelly Troyer Subject: Re: Fwd: Flex plate cracks To: Rotary motors in aircraft In-Reply-To: MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-1209501186-1312652559=:59565" --0-1209501186-1312652559=:59565 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Bobby,=0A=A0=0A=A0=A0=A0=A0 I hear you and agree............Unfortunatly in= Dave's and Mark's case they both are grounded=0Auntil a fix is in place...= ........For the average NA=A013B or Renesis the RX7 flexplate will probably= =0Agive good service as long as it has no prior damage=A0before flight.....= ........But in the case of the=0A20B (NA or Boosted) and Boosted 13B or Ren= esis it looks like a fix is in order.............You are=0Acorrect that Tra= cy will address the problem I am sure and a standardized fix blessed by Tra= cy=0Awill be forthcoming...........=0A=A0 Dave besides wanting to get back = in the air is under a time constraint to get in the air and tested =0Abefor= e the middle of September to race in the "Sportsman" class at Reno.........= ....=0A=0AKelly Troyer=0A"DYKE DELTA JD2" (Eventually)=0A"13B ROTARY"_ Engi= ne=0A"RWS"_RD1C/EC2/EM2=0A"MISTRAL"_Backplate/Oil Manifold=0A"TURBONETICS"_= TO4E50 Turbo=0A=0AFrom: Bobby J. Hughes =0ATo: Rotary mot= ors in aircraft =0ASent: Saturday, August 6, 2= 011 10:51 AM=0ASubject: [FlyRotary] Re: Fwd: Flex plate cracks=0A=0A=0AThe = modified aftermarket part my work but I would prefer a "standardized" solut= ion be adopted. In my opinion the gearbox is one item in our unique aircraf= t that should not be modified. The more hours we accumulate as a group the = faster any weak links will surface=A0and be corrected. Three items have bee= n identified within the last two years. =A0=A0=0A=0A1. Pin size increase. = =A0I think Tracy has made a change for new gearboxes. Since I'm running a s= upercharger I will be sending mine back for an upgrade.=0A2. Harder rivets = in the drive plate. I think Tracy has made the change for new gearboxes. I'= ll replace mine if /when I see any wear. I painted the area white so any sm= oke trail (or oil) is easy to see.=0A3. Flex plate. I'm sure Tracy will ide= ntify a solution for existing and new gearbox customers. Until that happens= I'll keep inspecting mine every few hours. If the change is a custom RWS p= art and a few hundred dollars that's ok.=A0=0A=0AIt also appears these item= s are showing up first / only on higher horsepower installations. =A0Booste= d and 20b's. I think we have a good gearbox and as a group we're identifyin= g and correcting the weak areas and making our installations more reliable.= In the near term Dave may need a one-off for Reno. Buying, individually ma= chining and balancing an aftermarket part, that will likely be discontinued= within a few years doesn't sound like a longterm repeatable solution. Safe= ty in numbers?=0A=0ABobby=0A( no Hushpower II mufflers or overly tight wate= r pump belts either)=0A=0A=0ASent from my iPad=0A=0AOn Aug 6, 2011, at 1:03= AM, "Chad Robinson" wrote:=0A=0A=0ACost, avai= lability?=0A>On Aug 6, 2011 12:44 AM, "David Leonard" = wrote:=0A>> And here is a good view showing the thickness.=0A>> =0A>> On F= ri, Aug 5, 2011 at 9:41 PM, David Leonard wrote:=0A>>= =0A>>> Well, I'd say that pretty well seals the fate of using flex plates.= You=0A>>> guys all owe me a beer for finding the issue :-)=0A>>>=0A>>> Her= e are some pictures of the machined flywheel that Kelly turned us on to=0A>= >> (ACT prolite). Weight is now under 9 lbs. I think it is a good balance= =0A>>> between weight and beefyness. Someone with better access to a CNC co= uld=0A>>> make the mods quick and easy, and the mods to that start/addapter= plate are=0A>>> pretty easy.=0A>>>=0A>>> Here is the front side.=0A>>>=0A>= >> --=0A>>> David Leonard=0A>>>=0A>>> Turbo Rotary RV-6 N4VY=0A>>> http://N= 4VY.RotaryRoster.net=0A>>> http://RotaryRoster.net=0A>>>=0A>>> On Fri, Aug = 5, 2011 at 6:08 PM, Charlie England wrote:=0A>>>= =0A>>>>=0A>>>>=0A>>>> I was moving stuff around in the hangar today& picked= up my salvage yard=0A>>>> flex=0A>>>> plate. Found two 3/4" cracks: down f= rom 9 o'clock& up from 3 o'clock=0A>>>> holes in=0A>>>> the pic. Plate has = never flown AFAIK.=0A>>>>=0A>>>> Charlie=0A>>>>=0A>>>>=0A>>>>=0A>>>>=0A>>>>= --=0A>>>> Homepage: http://www.flyrotary.com/=0A>>>> Archive and UnSub:=0A= >>>> http://mail.lancaironline.net:81/lists/flyrotary/List.html=0A>>>>=0A>>= >>=0A>>>=0A>>>=0A>>>=0A>> =0A>> =0A>> -- =0A>> David Leonard=0A>> =0A>> Tur= bo Rotary RV-6 N4VY=0A>> http://N4VY.RotaryRoster.net=0A>> http://RotaryRos= ter.net=0A> --0-1209501186-1312652559=:59565 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Bobby,
 
   &n= bsp; I hear you and agree............Unfortunatly in Dave's and Mark's case= they both are grounded
until a fix is in pl= ace...........For the average NA 13B or Renesis the RX7 flexplate will= probably
give good service as= long as it has no prior damage before flight.............But in the c= ase of the
20B (NA or Boosted) = and Boosted 13B or Renesis it looks like a fix is in order.............You are
correct that Tracy w= ill address the problem I am sure and a standardized fix blessed by Tracy
will be forthcoming.= ..........
  Dave besides = wanting to get back in the air is under a time constraint to get in the air= and tested
before the middle of= September to race in the "Sportsman" class at Reno.............
 
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil = Manifold
"TURBONETICS"_TO4E50 Turbo

From:= Bobby J. Hughes <bhughes@qnsi.net>
To: Rotary motors in aircraft <flyrotary@la= ncaironline.net>
Sent: Saturday, August 6, 2011 10:51 AM
Subject: [FlyRotary] Re: Fwd: Flex plate cracks

The modified aftermarket part my work but I would prefer a "standardiz= ed" solution be adopted. In my opinion the gearbox is one item in our uniqu= e aircraft that should not be modified. The more hours we accumulate as a g= roup the faster any weak links will surface and be corrected. Three items have been identified within = the last two years.   

1. Pin size increase.  I think Tracy has made a change for new ge= arboxes. Since I'm running a supercharger I will be sending mine back for a= n upgrade.
2. Harder rivets in the drive plate. I think Tracy has made the change= for new gearboxes. I'll replace mine if /when I see any wear. I painted th= e area white so any smoke trail (or oil) is easy to see.
3. Flex plate. I'm sure Tracy will identify a solution for existing an= d new gearbox customers. Until that happens I'll keep inspecting mine every= few hours. If the change is a custom RWS part and a few hundred dollars th= at's ok. 

It also appears these items are showing up first / only on higher hors= epower installations.  Boosted and 20b's. I think we have a good gearb= ox and as a group we're identifying and correcting the weak areas and makin= g our installations more reliable. In the near term Dave may need a one-off= for Reno. Buying, individually machining and balancing an aftermarket part= , that will likely be discontinued within a few years doesn't sound like a = longterm repeatable solution. Safety in numbers?

Bobby
( no Hushpower II mufflers or overly tight water pump belts either)


Sent from my iPad

On Aug 6, 2011, at 1:03 AM, "Chad Robinson" <crobinson@medialantern.com> wrote:
=
Cost, availability?
On Aug 6, 2011 12:44 AM, "David Leonar= d" <= wdleonard@gmail.com> wrote:
> And here is a good view show= ing the thickness.
>
> On Fri, Aug 5, 2011 at 9:41 PM, David L= eonard <wdleonard@gmail.com> wrote:
>
>> Well, I'd s= ay that pretty well seals the fate of using flex plates. You
>> gu= ys all owe me a beer for finding the issue :-)
>>
>> Here= are some pictures of the machined flywheel that Kelly turned us on to
&= gt;> (ACT prolite). Weight is now under 9 lbs. I think it is a good balance
>> betwee= n weight and beefyness. Someone with better access to a CNC could
>&g= t; make the mods quick and easy, and the mods to that start/addapter plate = are
>> pretty easy.
>>
>> Here is the front side= .
>>
>> --
>> David Leonard
>>
>&= gt; Turbo Rotary RV-6 N4VY
>> http://N4VY.RotaryRoster.net
= >> http:= //RotaryRoster.net
>>
>> On Fri, Aug 5, 2011 at 6= :08 PM, Charlie England <ceengland@bellsouth.net>= wrote:
>>
>>>
>>>
>>> I was mo= ving stuff around in the hangar today& picked up my salvage yard
>= ;>> flex
>>> plate. Found two 3/4" cracks: down from 9 o'= clock& up from 3 o'clock
>>> holes in
>>> the p= ic. Plate has never flown AFAIK.
>>>
>>> Charlie>>>
>>>
>>>
>>>
>>&g= t; --
>>> Homepage: http://www.flyrotary.com/
>>> Arc= hive and UnSub:
>>> http://mail.lancaironline.net:81/lists/flyrotary/L= ist.html
>>>
>>>
>>
>>>>
>
>
> --
> David Leonard
>
&= gt; Turbo Rotary RV-6 N4VY
> http://N4VY.RotaryRoster.net
>= http://Rotary= Roster.net


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