X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-qw0-f48.google.com ([209.85.216.48] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTPS id 5121823 for flyrotary@lancaironline.net; Mon, 12 Sep 2011 12:48:47 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.216.48; envelope-from=dmlobner@gmail.com Received: by qwj9 with SMTP id 9so4155288qwj.7 for ; Mon, 12 Sep 2011 09:48:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=A9gNo0+zwlRbFKrx3rIM1yZeCQawAkADSHXLaet5mBo=; b=d4eHU3hNFoRjuaz2/7wxdCyQOICCZqsIIx4ULrcNv/1ILPHRqI+PNvKpnA5gH9MDG7 8VZdCVOAeBJreCOOFgCBnaSFcwyt9NGt1LR+djB9dhJREs7JDsLjblQRkZHgfK/pyV2i yTQNumIud/ADwZ/JYL+NN471moimBqy+/sl74= MIME-Version: 1.0 Received: by 10.229.65.74 with SMTP id h10mr3767423qci.247.1315846091050; Mon, 12 Sep 2011 09:48:11 -0700 (PDT) Received: by 10.229.185.197 with HTTP; Mon, 12 Sep 2011 09:48:10 -0700 (PDT) In-Reply-To: References: Date: Mon, 12 Sep 2011 11:48:10 -0500 Message-ID: Subject: Re: [FlyRotary] Re: Flywheel thickness ? From: Dustin Lobner To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0016e65426cad60f6d04acc14aa8 --0016e65426cad60f6d04acc14aa8 Content-Type: text/plain; charset=ISO-8859-1 I would be interested in knowing how Mazda made the part that failed (flexplate). If they were to laser cut it, EDM it, or just plain punch it, that could've left defects (microcracks in the case of laser and EDM and tears in the case of punching) that would be sites for crack initiation down the road. An aluminum flywheel very well could be just fine on strength, just don't do something to it to pre-fail it. Dustin On Mon, Sep 12, 2011 at 9:28 AM, Tracy wrote: > Kelly, > The aluminum one I'm getting is 10.7 lbs but that is before removing > the replaceable iron friction surface. Probably about 3 lbs for the iron > piece but just guessing. I don't plan on removing much, if any, aluminum. > There is a LOT of in in the center area. > > I'm thinking we are over reacting on the strength issue. The Ross drive > used a custom aluminum flywheel that was just a plain 5/16" or 3/8" thick > aluminum disk with steel ring gear. Never heard of a problem with that > part. > > Tracy > > Sent from my iPad > > On Sep 11, 2011, at 10:09 PM, Kelly Troyer wrote: > > Tracy, > Curious as to the weight of the aluminum flywheel you are buying as most > I have seen are not much if any lighter than the steel versions by virtue > of > the the mass they must have for the needed strength to survive the > rotational > forces put on them at up to 10,000+ rpm in racing use..........I realize > that our > A/C use will not turn at these rpm's but you can only reduce weight so much > > without compromising structural integrity............ > > Kelly Troyer > *"DYKE DELTA JD2" (Eventually)* > "13B ROTARY"_ Engine > "RWS"_RD1C/EC2/EM2 > "MISTRAL"_Backplate/Oil Manifold > "TURBONETICS"_TO4E50 Turbo > > *From:* Kelly Troyer > *To:* Rotary motors in aircraft > *Sent:* Sunday, September 11, 2011 11:10 AM > *Subject:* [FlyRotary] Re: Flywheel thickness ? > > Tracy, > > Here are the measurements of both the "ACT" and "F1" chrome-molysteel > flywheels that I have..........All measurements are from the mounting face > of the > rear counterweight.......... > > "F1" Flywheel (11.8 lbs before any additional machine work for > lightening) > > (1) From counterweight to clutch disk surface 1.115 > in (28.321 mm) > (2) From cter-wt to pressure plate/ring gear surface 1.100 > in (27.940 mm) > (3) Flywheel thickness minus clutch disk surface 1.100 > in (27.940 mm) > > "ACT" Flywheels (Street-Lite 13.8 lbs/Pro-Lite 9.8 lbs before any > additional machine work for lightening) > > (1) From counterweight to clutch disk surface 1.111 > in (28.219 mm) > (2) From cter-wt to pressure plate/ring gear surface 1.096 > in (27.838 mm) > (3) Flywheel thickness minus clutch disk surface 1.096 > in (27.838 mm) > > > > > > Kelly Troyer > *"DYKE DELTA JD2" (Eventually)* > "13B ROTARY"_ Engine > "RWS"_RD1C/EC2/EM2 > "MISTRAL"_Backplate/Oil Manifold > "TURBONETICS"_TO4E50 Turbo > > *From:* Kelly Troyer > *To:* Rotary motors in aircraft > *Sent:* Thursday, September 8, 2011 6:48 PM > *Subject:* [FlyRotary] Re: Flywheel thickness ? > > Tracy, > I will get the steel fly-wheel measurements and get back to > you.............. > > Kelly Troyer > *"DYKE DELTA JD2" (Eventually)* > "13B ROTARY"_ Engine > "RWS"_RD1C/EC2/EM2 > "MISTRAL"_Backplate/Oil Manifold > "TURBONETICS"_TO4E50 Turbo > > *From:* Tracy > *To:* Rotary motors in aircraft > *Sent:* Thursday, September 8, 2011 3:20 PM > *Subject:* [FlyRotary] Flywheel thickness ? > > Question for David, Kelly or anyone else playing with lightweight > flywheels. I have one on the way but won't see it until I get back home in > October. I'm working on a new design to replace the stock flex plate and > need to know the thickness of the lightweight flywheel. Every picture I see > of them appears to show an almost flat disk which would imply that there is > MORE room between it and the redrive adapter plate than there is for the > flex plate which has about a 1 1/4" dish in it. BUT, much of the > discussion seems to imply that if anything, there is LESS. > > Anyone able to tell me the actual thickness of these aftermarket > lightweight flywheels? > > I'm looking at the aluminum versions for weight reasons and also because > the iron friction surface is removable ( for even less weight). > > Tracy > > Sent from my iPad > > > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: > > http://mail.lancaironline.net:81/lists/flyrotary/List.html > > > > > > > --0016e65426cad60f6d04acc14aa8 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable I would be interested in knowing how Mazda made the part that failed (flexp= late).=A0 If they were to laser cut it, EDM it, or just plain punch it, tha= t could've left defects (microcracks in the case of laser and EDM and t= ears in the case of punching) that would be sites for crack initiation down= the road.=A0 An aluminum flywheel very well could be just fine on strength= , just don't do something to it to pre-fail it.

Dustin

On Mon, Sep 12, 2011 at 9:28 A= M, Tracy <rwstra= cy@gmail.com> wrote:
Kelly,
=A0=A0 =A0The aluminum one I= 'm getting is 10.7 lbs but that is before removing the replaceable iron= friction surface. =A0 Probably about 3 lbs for the iron piece but just gue= ssing. =A0I don't plan on removing much, if any, aluminum. =A0 There is= a LOT of in in the center area.

I'm thinking we are over reacting on the strength i= ssue. =A0 The Ross drive used a custom aluminum flywheel that was just a pl= ain 5/16" =A0or 3/8" thick aluminum disk with steel ring gear. = =A0Never heard of a problem with that part.=A0

Tracy

Sent from my iPad
<= /div>

On Sep 11, 2011, at 10:09 P= M, Kelly Troyer <kel= tro@att.net> wrote:

Tracy,
=A0=A0 Curious as to the weight of the aluminum flywheel you are= buying as most
I have seen are not much if any lighter than the steel versions = by virtue of
the the mass=A0they must have=A0for the needed strength to survi= ve the rotational
forces put on them at up to 10,000+ rpm in racing use..........I= realize that our
A/C use will not=A0turn at these rpm's=A0but you can only reduce weight so much
without compromising structural integrity............
=A0
Kelly Troyer
"DYKE DELTA JD2&= quot; (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC= 2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo

= From: Kelly Troyer <keltro@att.net>
To: Rotary motors in aircr= aft <fl= yrotary@lancaironline.net>
= Sent: Sunday, September 11, 2011 11:10 AM
Subject: [FlyRotary] Re: F= lywheel thickness ?

Tracy,
=A0
=A0=A0=A0=A0 Here are the measurements of both = the "ACT" and "F1" chrome-moly steel=A0
flywheels that I have..........All measurements= are from the mounting face of the
rear counterweight..........
=A0
"F1" Flywheel=A0 (11.8 lbs before any= additional machine work for lightening)=A0
=A0
(1) From counterweight to clutch disk surface= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 1.115= in=A0 (28.321 mm)
(2)=A0From cter-wt to pressure pla= te/ring gear surface=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A01.100 in=A0 (= 27.940 mm)
(3) Flywheel thickness minus clutc= h disk surface=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A01.10= 0 in=A0=A0(27.940 mm)
=A0
"ACT" Flywheels=A0 (Street= -Lite 13.8 lbs/Pro-Lite 9.8 lbs before any additional machine work for ligh= tening)
=A0
(1) From counterweight to clutch disk surface= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 1.111= in=A0 (28.219 mm)
(2) From cter-wt to pressure plate= /ring gear surface=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 1.096 in=A0 (2= 7.838 mm)
(3)=A0Flywheel thickness minus clu= tch disk surface=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 1= .096 in=A0 (27.838 mm)
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0
=A0
Kelly Troyer
"DYKE DELTA JD2= " (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC= 2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo

From: Kelly Troyer <keltro@att.net>
To: Rotary motors in aircr= aft <fl= yrotary@lancaironline.net>
= Sent: Thursday, September 8, 2011 6:48 PM
Subject: [FlyRotary] Re: F= lywheel thickness ?

Tracy,
=A0=A0=A0=A0 I will get the steel fly-wheel measurements and get= back to you..............
=A0
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"RWS&= quot;_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo

From: Tracy <rwstracy@gmail.com>
To: Rotary motors in aircr= aft <fl= yrotary@lancaironline.net>
= Sent: Thursday, September 8, 2011 3:20 PM
Subject: [FlyRotary] Flywh= eel thickness ?

Question for David, Kelly or anyone else play= ing with lightweight flywheels.=A0 I have one on the way but won't see = it until I get back home in October.=A0 I'm working on a new design to = replace the stock flex plate and need to know the thickness of the lightwei= ght flywheel.=A0 Every picture I see of them appears to show an almost flat di= sk which would imply that there is MORE room between it and the redrive=A0 adapter plate than there is for the flex plate wh= ich has about a 1 1/4" dish in it.=A0 BUT,=A0 much of the discussion s= eems to imply that if anything, there is LESS.=A0

Anyone able to tell me the actual thickness of these aftermarket lightw= eight flywheels?

I'm looking at the aluminum versions for weight= reasons and also because the iron friction surface is removable ( for even= less weight).=A0

Tracy

Sent from my iPad


--
Homepage:=A0 http://www.flyrotary.com/
Archive and UnSub:=A0 http://mail.lancaironline.net:81/lists/flyrotary/List.html




=


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