X-CGP-ClamAV-Result: CLEAN X-VirusScanner: Niversoft's CGPClamav Helper v1.23.0 (ClamAV engine v0.103.0) X-Junk-Score: 0 [] X-KAS-Score: 0 [] From: " 12348ung@gmail.com" Received: from mail-pl1-f171.google.com ([209.85.214.171] verified) by logan.com (CommuniGate Pro SMTP 6.3.5) with ESMTPS id 367529 for flyrotary@lancaironline.net; Sat, 16 Oct 2021 17:14:55 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.214.171; envelope-from=12348ung@gmail.com Received: by mail-pl1-f171.google.com with SMTP id n11so8650464plf.4 for ; Sat, 16 Oct 2021 14:14:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:references:in-reply-to:subject:date:message-id:mime-version :thread-index:content-language; bh=ucHOG4kbQ37Utn2WOZKTdUkt9MgG5Wv0lPnS6q/2O7A=; b=Gp16CvsRWBT4XyrLN9raGHFbtMmJDvnlsmloRSFUlWiHzwM5+AqfeLoq+6vpm+Z+h3 OoHky2fOnwWCmjEAY84oDiPUrvmjh0WKOf34dM2XhjYH7NyoPiIYXP3EPYGkm0tKPOXs JnET/5V0JW9VqRjHRFovbBQslCTP65gNpD13aGu59jFfsYNWex9pJi3PUREh4wq9hmhy I/wlWl8dH7AktpNN+aP3BMvOMVfHNHjreSofAKBV0bpJg4nJFMFJmoqEJ2d5h3RClhP4 e625W2ralJw71K++22C0zb2OoSEpqPrN49t8L8IejK3ELOqHc9zugwCIpNyraM/5WMos s9gw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:references:in-reply-to:subject:date :message-id:mime-version:thread-index:content-language; bh=ucHOG4kbQ37Utn2WOZKTdUkt9MgG5Wv0lPnS6q/2O7A=; b=jh60kL9jjwfloykNXfcUGiQjkzupYX4qdvFJZzXg4AAVskNO8yjzh4dtrd7Y+fDSR1 B8wdQv93+42b1bKaaxNP11QwaPHJ/5O1p1SP3P15e+YwNK2CkArneRlJin6AJzeXDHMI 2iK5AsEGyg5m7qAxRqusDaplHdmahLZkOqEz+ZTDZL0/gcOsF/T/XCg2zCW9mckOz0Vn k0yIOjSZEgviqv6aHZLrnNlxctd18/nT3NNoBQ5I/WfkBE3DEHR1nYvmsCbOeN14tNhL lsKImphKlb/2rbUJbpsbRKdxQNMdUl10qSfqqoJYTQXdZsDeDomCjZQeAffxDQmoqL0H ZHNw== X-Gm-Message-State: AOAM532vxS8I4vXOp2/Bb2r16uM3lzSjeFW1sklqdOPkX/UyDCZfhwJ+ T5Tz8vswLGLJDkutIdqPS6zDeMSBQsc= X-Google-Smtp-Source: ABdhPJxHgLJDOzb+Jify24r+uK3EXAq2CbWW0f9W8CXhNYg4aARUW1zn4CK4ysvoTWepGnI8OLdgrQ== X-Received: by 2002:a17:90a:de0d:: with SMTP id m13mr37868604pjv.85.1634418878162; Sat, 16 Oct 2021 14:14:38 -0700 (PDT) Return-Path: <12348ung@gmail.com> Received: from UserPC ([103.198.24.78]) by smtp.gmail.com with ESMTPSA id o72sm8422850pjo.50.2021.10.16.14.14.36 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 16 Oct 2021 14:14:37 -0700 (PDT) To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: RE: [FlyRotary] Re: flex plate Date: Sun, 17 Oct 2021 08:14:35 +1100 Message-ID: <002101d7c2d2$d31ea2c0$795be840$@gmail.com> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0022_01D7C32F.068F1AC0" X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQF57YRZc5D01T67GqO5H/0gEDG8yqyRxUxg Content-Language: en-us This is a multipart message in MIME format. ------=_NextPart_000_0022_01D7C32F.068F1AC0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Dave and all, Respect your comments re flexplate cracking, = and in the process of making anew cushion drive, a cross between the = RWS and mine. Mine in the first batch the rubber did not survive long = enough, so the rubber has been upgraded. The problem still remains that = to fix the rubber requires it to be returned to the rubber factory for = cleaning and revulcanised. Then it must once again be trued up on a = lathe and balanced. All time and money and cannot be done in field. The new version is a cross between the RWS and mine. = All waiting for the Covid restrictions in OZ to allow work to = recommence! It starts with 3mm chromoly disc bolted to the E shaft, = then another cast disc (magnesium alloy for lightness and strength) with = 6 rubber doughnuts held to the 3mm drive disc. According to the experts = all I need then is just an alloy internal spline to replace the steel = spline block in my unit to drive the redrive input shaft. This can be = cut with a Broach into the centre of the cast alloy plate with the drive = rubbers. A racing gearbox manufacturer tells me that in racing this has = held up to 1200 HP. If I doubt the alloy will not hold the HP I need = (350HP and not 1200 HP) I simplly put a S/S collar over the outer of the = centre disc where the spline is cut to prevent any chance of the spline = opening up. Probably tells you all nothing, but will have a goods once = I get factories working once again. This can all be repaired in field (replace rubbers if = necessary) so cost and time lost is minimal. Neil. =20 From: Rotary motors in aircraft =20 Sent: Saturday, October 16, 2021 10:27 AM To: Rotary motors in aircraft Subject: [FlyRotary] Re: flex plate =20 Dave, do you have a recommendation for a lightweight flywheel and = flexplate/ damper (brand or type) for a 250hp 13b? Thanks, James = Whitehurst =20 On Fri, Oct 15, 2021, 12:27 David Leonard wdleonard@gmail.com = > wrote: But you should know that those are prone to cracking, and I had a = catastrophic failure of one. They were never designed to carry the = output load of the engine, just as a way to engage the starter. Tracey = published a revision in the archives, or you can convert a manual fly = wheel to work. I suggest lightweight aftermarket versions. =20 Dave Leonard =20 On Thu, Oct 14, 2021 at 2:09 PM 12348ung@gmail.com = > wrote: Thought so, thanks=20 =20 From: Rotary motors in aircraft >=20 Sent: Friday, October 15, 2021 8:06 AM To: Rotary motors in aircraft > Subject: [FlyRotary] Re: flex plate =20 AUTOMATIC =20 On Thu, Oct 14, 2021, 4:04 PM 12348ung@gmail.com = > wrote: Can anyone confirm which flex plate fits the RWS redrive? I believe it = comes from a 92 model RX7. But is it from an automatic, manual or turbo = model? All are different apparently. Thanks Neil. ------=_NextPart_000_0022_01D7C32F.068F1AC0 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable

Dave and = all,

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2= =A0=C2=A0=C2=A0=C2=A0 Respect your comments re flexplate cracking, and = in the process of making anew cushion drive, a cross between =C2=A0the = RWS and mine. Mine in the first batch the rubber did not survive long = enough, so the rubber has been upgraded.=C2=A0 The problem still remains = that to fix the rubber requires it to be returned to the rubber factory = for cleaning and revulcanised.=C2=A0 Then it must once again be trued up = on a lathe and balanced.=C2=A0 All time and money and cannot be done in = field.

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 The new version is a cross between the = RWS and mine.=C2=A0 All waiting for the Covid restrictions in OZ to = allow work to recommence!=C2=A0 It starts with=C2=A0 3mm chromoly disc = bolted to the E shaft, then another cast disc (magnesium alloy for = lightness and strength) with 6 rubber doughnuts held to the 3mm drive = disc.=C2=A0 According to the experts all I need then is just an alloy = internal spline to replace the steel spline block in my unit to drive = the redrive input shaft.=C2=A0 This can be cut with a Broach into the = centre of the cast alloy plate with the drive rubbers.=C2=A0 A racing = gearbox manufacturer tells me that in racing this has held up to 1200 = HP.=C2=A0 If I doubt the alloy will not hold the HP I need (350HP and = not 1200 HP) I simplly put a S/S collar over the outer of the centre = disc where the spline is cut to prevent any chance of the spline opening = up.=C2=A0 Probably tells you all nothing, but will have a goods once I = get factories working once again.

=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 This can all be repaired in field = (replace rubbers if necessary) so cost and time lost is = minimal.

Neil.

 

From: Rotary motors in aircraft = <flyrotary@lancaironline.net>
Sent: Saturday, October = 16, 2021 10:27 AM
To: Rotary motors in aircraft = <flyrotary@lancaironline.net>
Subject: [FlyRotary] Re: = flex plate

 

Dave, = do you have a recommendation for a lightweight flywheel and flexplate/ = damper (brand or type) for a 250hp 13b? Thanks, James = Whitehurst

 

On = Fri, Oct 15, 2021, 12:27 David Leonard wdleonard@gmail.com <flyrotary@lancaironline.net> = wrote:

But = you should know that those are prone to cracking, and I had a = catastrophic failure of one.  They were never designed to carry the = output load of the engine, just as a way to engage the starter.  = Tracey published a revision in the archives, or you can convert a manual = fly wheel to work.  I suggest lightweight aftermarket = versions.

 

Dave Leonard

 

On = Thu, Oct 14, 2021 at 2:09 PM 12348ung@gmail.com <flyrotary@lancaironline.net> = wrote:

Thought so, thanks

 

From:= Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: = Friday, October 15, 2021 8:06 AM
To: Rotary motors in aircraft = <flyrotary@lancaironline.net>
Subject: = [FlyRotary] Re: flex plate

 <= /o:p>

AUTOMATIC

 <= /o:p>

On Thu, Oct = 14, 2021, 4:04 PM 12348ung@gmail.com <flyrotary@lancaironline.net> = wrote:

Can anyone confirm which flex plate fits the RWS = redrive?  I believe it comes from a 92 model RX7. But is it from an = automatic, manual or turbo model?  All are different = apparently.

Thanks  = Neil.

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