X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-fx0-f52.google.com ([209.85.161.52] verified) by logan.com (CommuniGate Pro SMTP 5.4.1) with ESMTPS id 5093407 for flyrotary@lancaironline.net; Tue, 16 Aug 2011 01:05:58 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.161.52; envelope-from=wdleonard@gmail.com Received: by fxd18 with SMTP id 18so3932821fxd.25 for ; Mon, 15 Aug 2011 22:05:21 -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=c5wBAB7/JNQB7e0GMZBjDhc3c0YZcDUdh7UzyDmUdBM=; b=nPOGFfAXZtsgY7PTPzNQX0FKF9rz5oW5DTpjii3durKXK6EiA73hzMiZvnWf9sJM6O J3wAHTt0ZShnmYhaTjT1xyvf3d/qRm2jBWmC+stXRFhi+jBZgfck2L2X//YjVLrwnElm GHa0XM3qSJDQYXpm3IER3gURYTAhsB13fosMA= MIME-Version: 1.0 Received: by 10.223.145.144 with SMTP id d16mr6554384fav.100.1313471120963; Mon, 15 Aug 2011 22:05:20 -0700 (PDT) Received: by 10.223.2.207 with HTTP; Mon, 15 Aug 2011 22:05:20 -0700 (PDT) In-Reply-To: References: Date: Mon, 15 Aug 2011 22:05:20 -0700 Message-ID: Subject: Re: [FlyRotary] Re: First flight with new Flywheel From: David Leonard To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0023545bddc496781004aa9853e2 --0023545bddc496781004aa9853e2 Content-Type: text/plain; charset=ISO-8859-1 Oh, I forgot to remind you about the fact that I had to machine a recess in the adapter plate to move the starter closer to then engine. I split the material to be removed between the adapter plate and the starter mounting flange. I asked the guy for .18 off of each, but that ended up at too much, and I then had to go back an make a spacer so the starter wouldn't hit the flywheel. David On Mon, Aug 15, 2011 at 10:00 PM, David Leonard wrote: > Bolt-on would be a stretch, but not too much work either. Measurements > were putting the distance between the damper spline and adapter plate at > about zero (after the clutch wear surface was taken down). So just to be on > the safe side I had the shop take a small bit off the spline while it was in > the machine shop. Now there is a small gap. I think I only took off 0.01 > or so... Less that half of the end flange (which I wanted to keep mostly > intact to resist radial expansion of the spline. > > I did not use the washers between the damper plate and flywheel. > Currently, they won't fit as they are thicker than the gap between the > spline and adapter plate. I could have easily taken a little more off the > flywheel and/or spline and they would fit. But I don't really see their > purpose anymore. The flywheel makes a nice surface for the dampers to lie > against. I see little or no overhang past the flywheel mounting surface. > Removing them also reduced the twisting moment on the bolts. Lastly, those > washers were really wearing into the damper plate right at the rivets > holding the damper support blocks. > > The scars on the damper plate from the washers show that I was getting a > good 3-4 mm of relative movement between the damper plate and the > washers/flex plate. I think that much was not necessary. My silicone > dampers are stiffer and there is now direct contact between the flywheel and > damper plate so it is possible that I am not getting enough dampening and > risk damaging the gears. Opinions? > > -- > David Leonard > > Turbo Rotary RV-6 N4VY > http://N4VY.RotaryRoster.net > http://RotaryRoster.net > > > On Mon, Aug 15, 2011 at 10:11 AM, Kelly Troyer wrote: > >> Dave, >> Also were you able to use the large washers between the damper/drive >> plate >> and flywheel (as the silicone dampers overhang the outer edge of the >> flywheel >> mounting area slightly) without triming the nose of the damper spline >> ??............ >> >> 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:* Monday, August 15, 2011 9:38 AM >> *Subject:* [FlyRotary] Re: First flight with new Flywheel >> >> David, >> Was it a bolt on change or was it necessary to shorten the nose of the >> damper spline to use this flywheel? >> >> Still looking at options. >> >> Tracy >> >> Sent from my iPad >> >> On Aug 14, 2011, at 7:20 PM, David Leonard wrote: >> >> I finally took the new flywheel and silicone dampers out for a flight >> today. I was hoping for a slight improvement in idle and/or smoothness with >> the little bit of extra weight in the flywheel, but I guess 4 lbs is just >> not enough to make much of a difference. I flew around for about an hour >> and got the RPM up to 7000 and MAP up to 40 in., and loading the plane to 4G >> (thinking about gyroscopic forces) without any noticeable change in the way >> the engine sounded or ran. Everything look ship-shape on a post-flight >> examination. >> >> This is the ACT flywheel that Kelly found for us. Looks bulletproof >> compared to a flex plate. >> >> Next project, finish installing the ADI system. >> >> -- >> David Leonard >> >> Turbo Rotary RV-6 N4VY >> http://N4VY.RotaryRoster.net >> http://RotaryRoster.net >> >> >> >> > > -- David Leonard Turbo Rotary RV-6 N4VY http://N4VY.RotaryRoster.net http://RotaryRoster.net --0023545bddc496781004aa9853e2 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Oh, I forgot to remind you about the fact that I had to machine a rece= ss in the adapter plate to move the starter closer to then engine.=A0 I spl= it the material to be removed between the adapter plate and the starter mou= nting flange.=A0 I asked the guy for .18 off of each, but that ended up at = too much, and I then had to go back an make a spacer so the starter wouldn&= #39;t hit the flywheel.
=A0
David

On Mon, Aug 15, 2011 at 10:00 PM, David Leonard = <wdleonard@gmai= l.com> wrote:
Bolt-on would be a stretch, but not too much work either.=A0 Measureme= nts were putting the distance between the damper spline and adapter plate a= t about zero (after the clutch wear surface was taken down).=A0 So just to = be on the safe side I had the shop take a small bit off the spline while it= was in the machine shop.=A0 Now there is a small gap.=A0 I think I only to= ok off 0.01 or so...=A0 Less that half of the=A0end flange (which I wanted = to keep mostly intact to resist radial expansion of the spline.
=A0
I did not use the washers between the damper plate and flywheel.=A0 Cu= rrently, they won't fit as they are=A0thicker than the gap between the = spline and adapter plate.=A0 I could have easily taken a little more off th= e flywheel and/or spline and they would fit.=A0 But I don't really see = their purpose anymore.=A0 The flywheel makes a nice surface for the dampers= to lie against.=A0 I see little or no overhang past the flywheel mounting = surface.=A0 Removing them also reduced the twisting moment on the bolts.=A0= Lastly, those washers were really wearing into the damper plate right at t= he rivets holding the damper support blocks.
=A0
The scars on the damper plate from the washers show that I was getting= a good 3-4 mm of=A0relative movement between the damper plate and the wash= ers/flex plate.=A0 I think that much was not necessary.=A0 My silicone damp= ers are stiffer and there is now direct contact between the flywheel and da= mper plate so it is possible that I am not getting enough dampening and ris= k damaging the gears.=A0 Opinions?

--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.ne= t
http://Rota= ryRoster.net


On Mon, Aug 15, 2011 at 10:11 AM, Kelly Troyer <= span dir=3D"ltr"><ke= ltro@att.net> wrote:
Dave,
=A0=A0 =A0Also were you able to use the large washers between th= e damper/drive plate
and flywheel (as the silicone dampers overhang the outer edge of= the flywheel
mounting area slightly) without triming = the nose of the damper spline ??............
=A0
Kelly Troyer
"DYKE DELTA JD2" = (Eventually)
"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
&quo= t;MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turbo

From: Tracy <rwstracy@gmail.com&g= t;=20

To: Rotary motors = in aircraft <flyrotary@lancaironline.net>
Sent: Monday, August 15, 2011 9:38 AM
Subject: [FlyRotary] Re: Fi= rst flight with new Flywheel

David,
=A0=A0 Was it a bolt on change or was it necessary to shorten the nose= of the damper spline to use this flywheel?

Still looking at options.

Tracy

Sent from my iPad

On Aug 14, 2011, at 7:20 PM, David Leonard <wdleonard@gmail.com<= /a>> wrote:



<= /div>





--
David Leonard

Turbo = Rotary RV-6 N4VY
http://N4VY.Ro= taryRoster.net
http://RotaryRoster.net
--0023545bddc496781004aa9853e2--