X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-ey0-f180.google.com ([209.85.215.180] verified) by logan.com (CommuniGate Pro SMTP 5.4.0) with ESMTPS id 5057550 for flyrotary@lancaironline.net; Wed, 20 Jul 2011 02:23:27 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.215.180; envelope-from=wdleonard@gmail.com Received: by eyg24 with SMTP id 24so609593eyg.11 for ; Tue, 19 Jul 2011 23:22:51 -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=vAeJ2PPn6mRBxDIB6OsXp49EBn3xmAEZLK0zx0z3450=; b=ZnIbcY09cAcK4ghvvJdcLH8zsvX5COuo+UAGJ1ETm6jJpfZi5tfLIm1TNmjN7Hu2VQ ORb3Zg0h0EAjEaKMgWbOUFrj4IFRtvG8kQAinxi850dS2IVGBFYydARjZQ/e0/SNUFsW H+eCs22XvcivWyHGoNwg/Mkw11YDbmHndMgxg= MIME-Version: 1.0 Received: by 10.14.96.14 with SMTP id q14mr3156109eef.9.1311142970483; Tue, 19 Jul 2011 23:22:50 -0700 (PDT) Received: by 10.14.37.4 with HTTP; Tue, 19 Jul 2011 23:22:50 -0700 (PDT) In-Reply-To: References: Date: Tue, 19 Jul 2011 23:22:50 -0700 Message-ID: Subject: Re: [FlyRotary] Re: Ok Here are the important flywheel measurements From: David Leonard To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=bcaec52be7b301665904a87a437c --bcaec52be7b301665904a87a437c Content-Type: text/plain; charset=ISO-8859-1 Ah, no, you misunderstood. At this point Kelly and I futz around with making the flywheel work. Then, after much work and $$, Tracy finally decides to change his adapter plate so that it fits the RX8 flex plate and solves the issue for everyone. :-) David Leonard On Tue, Jul 19, 2011 at 3:38 PM, Bill Bradburry wrote: > ** ** ** ** > > Hey! All of us with the RD1-X drive are in the same boat. I thought you > guys were making these up to send out to all of us???! :>)**** > > ** ** > > Bill B**** > > ** ** > ------------------------------ > > *From:* **Rotary motors in aircraft** [mailto:flyrotary@lancaironline.net] > *On Behalf Of *David Leonard > *Sent:* Tuesday, July 19, 2011 5:52 PM > > *To:* **Rotary motors in aircraft** > *Subject:* [FlyRotary] Re: Ok Here are the important flywheel measurements > **** > > ** ** > > Yea, that is a bummer, but I was not very hopeful. So we can weld an > additional ring gear onto the face of the other, or machine > our existing starters and/or flex plates. I will probably do the latter. > Won't be that big of a deal I hope. Thanks for being the parts consultant. > At least now you have a spare start to use should you ever need one.**** > > ** ** > > David**** > > On Tue, Jul 19, 2011 at 2:06 PM, Kelly Troyer wrote:**** > > Dave,**** > > **** > > Turbo starter is here..........Priliminary quick and dirty measurements > are 1.875 starter flange **** > > to far end of unactivated starter (bendix) gear) which is 0.121 more than > your 1.754 number**** > > and the same for all practical purposes considering probable slight > errors.............I do not have**** > > 1988 manual trans starter at the moment but will be at my hangar tomorrow > and will pick it up**** > > to bring back with me for an in depth exam for any differences between > them............If there is**** > > a difference I would think it would be in the starter gear as 1986-91 NA > manual trans starter **** > > was used on a slightly smaller flywheel although it has worked well on the > larger auto trans**** > > flexplate..........."Sigh".........Such is experimental aviation and so > much for "AS"umptions....<:)**** > > **** > > Kelly Troyer > *"DYKE DELTA JD2"** **(Eventually)***** > > "13B ROTARY"_ Engine > "RWS"_RD1C/EC2/EM2 > "MISTRAL"_Backplate/Oil Manifold**** > > "TURBONETICS"_TO4E50 Turbo**** > > ** ** > > *From:* David Leonard > *To:* **Rotary motors in aircraft** **** > > *Sent:* Monday, July 18, 2011 11:28 PM**** > > > *Subject:* [FlyRotary] Re: Ok Here are the important flywheel measurements > **** > > ** ** > > Hi Kelly, **** > > I already took ****Tracys**** plate into account. (I measured it at .520 > in). So it was 1.234 plus the .520 for the plate. For ease, I measured > when the solenoid was NOT activated. Crossing fingers, but ready to mill > the plate and starter.... eh, I mean, hire someone to do it :-)**** > > ** ** > > David**** > > On Mon, Jul 18, 2011 at 9:14 PM, Kelly Troyer wrote:**** > > Dave,**** > > **** > > So adding the RD1X mount plate thickness 0.500 (1/2 inch) we have a > measurement of approx 2.254 inch...........****Tracy******** > > calls for a 1986 NA (86 to 91 are the same) manual transmission > starter.............I do not know exactly what difference the **** > > turbo starter has except the turbo flywheel and automatic flex-plate are > slightly larger in diameter and have more ring gear **** > > teeth than the 86-91 NA manual flywheel................There was no turbo > engine offered until 1987.............I should have the**** > > turbo starter in a few days so we can decide if it will be about 0.375 in > longer from mounting flange to end of the starter **** > > gear teeth when activated by the solenoid..............Cross your fingers > !!............<:) **** > > **** > > **** > > Kelly Troyer > *"DYKE DELTA JD2"** **(Eventually)***** > > "13B ROTARY"_ Engine > "RWS"_RD1C/EC2/EM2 > "MISTRAL"_Backplate/Oil Manifold**** > > "TURBONETICS"_TO4E50 Turbo**** > > ** ** > > *From:* David Leonard > *To:* **Rotary motors in aircraft** > *Sent:* Monday, July 18, 2011 9:34 PM > *Subject:* [FlyRotary] Re: Ok Here are the important flywheel measurements > **** > > Kelly, here is the starter measurement. This is the starter that ****Tracy > **** recommends, I forget which one that is. From the engine side of the > mounting flange, to the far end of the tear tooth, I measure 1.754 - give or > take. **** > > ** ** > > -- > > David Leonard > > Turbo Rotary RV-6 N4VY > http://N4VY.RotaryRoster.net > http://RotaryRoster.net **** > > On Mon, Jul 18, 2011 at 6:16 PM, Kelly Troyer wrote:**** > > Dave,**** > > While they are at it have them turn the pressure plate surface down to > the pressure plate mounting**** > > level so all of the rubber osolator is on a flat surface without a 0.018 > step at the outer edge.......Or**** > > you could put a washer under the drive plate (like the top > washer)............But this would put the drive**** > > plate further forward on the input shaft splines the thickness of the > washer..........I do not khow if this**** > > would pose a problem or not...........**** > > **** > > Kelly Troyer > *"DYKE DELTA JD2"** **(Eventually)***** > > "13B ROTARY"_ Engine > "RWS"_RD1C/EC2/EM2 > "MISTRAL"_Backplate/Oil Manifold**** > > "TURBONETICS"_TO4E50 Turbo**** > > ** ** > > *From:* David Leonard > *To:* **Rotary motors in aircraft** > *Sent:* Monday, July 18, 2011 7:55 PM > *Subject:* [FlyRotary] Re: Ok Here are the important flywheel measurements > **** > > Well, NOW you tell me... :-) Yea, that was going to be an issues > reguardless of which solution we chose. I think I will bring mine to a > machine shop and let them figure it out :-)**** > > **** > > -- > David Leonard > > Turbo Rotary RV-6 N4VY > http://N4VY.RotaryRoster.net > http://RotaryRoster.net > > **** > > On Mon, Jul 18, 2011 at 4:49 PM, Kelly Troyer wrote:**** > > Dave,**** > > **** > > Forgot to add that there are 3 clutch pressure plate locating dowels in > the flywheel.........You**** > > will have to knock these out with a punch as their position will not let > you properly center the **** > > RD1X drive plate and will not let the drive plate "Float" > properly..............I have not come up **** > > with a method yet to center the drive plate with the absolute accuracy > needed for drilling the**** > > flywheel for the drive plate attach bolts...........Maybe some of the group > with more machinists**** > > skills than I can make a recommendation !!..................Also the rear > of the attach bolt holes**** > > will need to be spotfaced to provide a flat surface for the bolt head or > nut and washer from**** > > what I have observed on the backside of my > flywheel........................<:) **** > > **** > > 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:* Monday, July 18, 2011 6:29 PM > > *Subject:* [FlyRotary] Ok Here are the important flywheel measurements > **** > > Dave,**** > > The link attached shows the prolite version (9.8 lbs) on the left in the > photo.............Do you have your starter flange**** > > to gear measurement handy as my RD1X starter (not the turbo model) is 55 > miles away at the moment........... **** > > **** > > *http://www2.advancedclutch.com/products/xact_flywheels.aspx***** > > **** > > Kelly Troyer > *"DYKE DELTA JD2"** **(Eventually)***** > > "13B ROTARY"_ Engine > "RWS"_RD1C/EC2/EM2 > "MISTRAL"_Backplate/Oil Manifold**** > > "TURBONETICS"_TO4E50 Turbo**** > > ** ** > > *From:* David Leonard > *To:* **Rotary motors in aircraft** > *Sent:* Monday, July 18, 2011 6:18 PM > *Subject:* [FlyRotary] Re: Ok Here are the important flywheel measurements > **** > > OK Kelly,**** > > **** > > Thanks to all your hard work and research, I have ordered up the Prolite > 9.8 lb version of this. Decided that I was done with the flex plates. > Thanks for locating a great price. I am a little nervous that the picture > does not look right, but I guess I can always return it.**** > > Like you, I figure we will solve the starter issue one way or another.**** > > **** > > -- > David Leonard > > Turbo Rotary RV-6 N4VY > http://N4VY.RotaryRoster.net > http://RotaryRoster.net > > **** > > On Sat, Jul 16, 2011 at 2:21 PM, Kelly Troyer wrote:**** > > Dave and All,**** > > **** > > Ok Dave the "ACT" "Streetlite" 13.8 lb flywheel was just > delivered and I am in process of taking**** > > your measurements to see where we stand................This flywheel is a > thing of beauty (to a RotorHead)**** > > and my RD1C drive plate will bolt to it with no problem (through drill and > spotface the rear of the flywheel**** > > because it has a slight taper in that area).............I just have to > verify just where the RD1C drive splines **** > > will be positioned (fore and aft) on the input shaft compared to the RX7 > flexplate.............The clutch plate**** > > friction area is slightly raised (about 0.065) above the clutch mount area > and I would probably take it**** > > down tto the clutch level (probably not necessary but would reduce weight > slightly.............I have a 93-95**** > > Turbo starter on the way (should take care of starter mesh > problem)..............If you are interested I can**** > > guide you to another 93-95 starter (used $49.00 with/shipping) if it is > still for sale.............**** > > One other thing at this time..............The lighter 9.8 lb > version may be usable but it is listed as 116**** > > ring gear teeth and I have not found out what its diameter is and what > starter would be used with it......**** > > I suspect it may be the diameter of the NA 13B flywheels and may > use the 86-91 NA manual trans**** > > starter............You need to talk to the manufacturer..........They are > in ****Lancaster**, **Calif****............The 9.8 lb**** > > version is a little more expensive due to more extensive machine work to > reduce weight.............See the**** > > link below............The link to THMotorsports has the best price I have > found on the 9.8 lb flywheel......The**** > > photo on their page is not the Rotary 9.8 lb version........... **** > > **** > > *http://www2.advancedclutch.com/products/xact_flywheels.aspx***** > > **** > > **** > > *http://thmotorsports.com/act/act_flywheel_prolite/600140/i-47718.aspx**** > * > > **** > > 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:* Friday, July 15, 2011 12:34 PM > *Subject:* [FlyRotary] Re: Ok Here are the important flywheel measurements > **** > > Dave and All,**** > > **** > > Sounds encourageing...............Replacing the starter with turbo > model would seem to be**** > > least expensive and safer than adding additional ring gear + > welding..............I also echo what**** > > Bill and Bobby have said concerning the Al Wick fix and getting ****Tracy* > ***'s thoughts about cause**** > > of problem and perhaps need for periodic inspection and/or rubber isolator > replacement........ **** > > **** > > Kelly Troyer > *"DYKE DELTA JD2"** **(Eventually)***** > > "13B ROTARY"_ Engine > "RWS"_RD1C/EC2/EM2 > "MISTRAL"_Backplate/Oil Manifold**** > > "TURBONETICS"_TO4E50 Turbo**** > > ** ** > > *From:* David Leonard > > *To:* **Rotary motors in aircraft** > *Sent:* Thursday, July 14, 2011 11:41 PM > *Subject:* [FlyRotary] Ok Here are the important flywheel measurements > **** > > I finally got to the hangar and measured out my S5 turbo flywheel and the > remains of my S5 flexplate. The results are very encouraging, even as good > as the possibly could be to make the swap, but I only had ten min at the > hangar before I had to leave to pick up my daughter from daycare, so they > are one try and slightly sloppy... I make no guarantees. The height > measurements of the flex plate were particularly suspect because, well, mine > is all warped and broken. > > *Ring Gear Diameter* - Perfect fit. As we suspected, same size, same > tooth spacing. > > *Ring Gear Fore-Aft Placement* - As measured from the underside of the big > nut. (for all further reference, aft means aft in the CAR). The flex plate > puts the aft side of the ring gear 1.290 inches from the front of the big > nut. The flywheel puts it 0.913. So the flex plate puts the ring gear > (appx) 0.377 in. further aft. This is actually fortuitous because it just > so happens that the ring gear thickness is .365 ... So all we have to do > to fix the discrepancy is weld and extra ring gears onto to the flywheel > ring gear and there will be teeth that the starter can reach:(bottom of the > page.. the cost $80) > http://mazdatrix.com/flywheel.htm > It may also be possible to fix the discrepancy by changing the starter... > will look into that. > > *Damper Plate Placement* - On the flywheel, the mounting surface is proud > (or aft) of the ring gear. On the flex plate, the mounting surface is > recessed (or forward) from the ring gear. A**** > > nd it all pretty much works out. That position on the flywheel will vary > somewhat depending on which flywheel you have and how much wear you have on > the clutch slip surface. But on my (I assume well-worn) flywheel the > placement was 0.965 while the flex plate was 0.950. Pretty damn close and > given measurement error it might me meant to be right on. Or, any > difference could be made up by trimming down the spline on the damper plate > or removing or adding spacers between the two. > > So in my mind, a flywheel is the way to go. Stout, easy to get, pick your > weight, only mods seem to be drilling the mounting holes and welding on a > second gear ring. > > -- > David Leonard**** > > ** ** > > > > > -- > 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 --bcaec52be7b301665904a87a437c Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Ah, no, you misunderstood. =A0 At this point Kelly and I futz around with m= aking the flywheel work. =A0Then, after much work and $$, Tracy finally dec= ides to change his adapter plate so that it fits the RX8 flex plate and sol= ves the issue for everyone. =A0:-)

David Leonard

On Tue, Jul = 19, 2011 at 3:38 PM, Bill Bradburry <bbradburry@bellsouth.net> wrote:

Hey!=A0 All of us = with the RD1-X drive are in the same boat.=A0 I thought you guys were making these up to send out to= all of us???!=A0 :>)

=A0<= /span>

Bill B

=A0<= /span>

From: Rotary motors in aircraft [mailto:fl= yrotary@lancaironline.net] On Behalf Of David Leonard
Sent: Tuesday, July 19, 2011= 5:52 PM


To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Ok Here are the important flywheel measurements

=A0

Yea, that is a bummer, but I was not very hopeful. = =A0So we can weld an additional ring gear onto the face of the other, or machine our=A0existing=A0starters and/or flex plates. =A0I will probably do the latter. =A0Won't be that big of a deal I hope. =A0Thanks for being the parts consultant. =A0At least now you have a spare start to use should you ever need one.

=A0

David

On Tue, Jul 19, 2011 at 2:06 PM, Kelly Troyer <keltro@att.net> wr= ote:

Dave,

=A0

=A0=A0 Turbo starter is here..........Priliminary quick and dirty measurements are 1.875 starter flange

to far end of unactivated starter (bendix) gear) which is 0.121 more than your 1.7= 54 number

and the same for all practical purposes=A0considering probable slight errors.............I do not have

1988 manual trans starter at the moment but will be at my hangar tomorrow and wi= ll pick it up

to bring back with me for an in depth exam for any differences between them............If there is

a difference I would think it would be in the starter gear as 1986-91 NA manu= al trans starter=A0=A0

was used on a slightly smaller flywheel although it has worked well on the larg= er auto trans

flexplate..........."Sigh".........Such is experimental aviation and so much for "AS"umptions....<:)

=A0

Kelly Troyer
"= ;DYKE DELTA JD2" <= b>(Eventually)

"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold

"TURBONETICS"_TO4E50 Turbo

=A0

From: David Leonard <wdleonard@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>

Sent: Monday, July 18, 2011 11:28 PM


Subject: [FlyRotary] Re: Ok = Here are the important flywheel measurements

=A0

Hi Kelly,

I already took Tracys plate into account. (I measured it at .520 in). =A0So it was 1.234 plus the .520 for the plate. =A0For ease, I measured when the solenoid was NOT activated. =A0Crossing fingers, but ready to mill the plate and starter.... eh, I mean= , hire someone to do it :-)

=A0

David

On Mon, Jul 18, 2011 at 9:14 PM, Kelly Troyer <keltro@att.net> wrote:

Dave,

=A0

=A0=A0 So adding the RD1X mount plate thickness 0.500 (1/2 inch)=A0we have a measurement of approx 2.254 inch...........Tracy

calls for a 1986 NA=A0(86 to 91 are the same) manual transmission starter.............I do=A0not know exactly what=A0difference=A0the =

turbo starter has except the turbo flywheel and automatic flex-plate are slightly larger in diameter and have more ring gear

teeth=A0than the 86-91 NA manual flywheel................There was no turbo engine offer= ed until 1987.............I should have the

turbo starter in a few days so we can decide if it will be about 0.375 in longer=A0from mounting=A0flange to end of the starter =

gear teeth when activated by the solenoid..............Cross your fingers !!............<:)=A0

=A0

=A0

Kelly Troyer
"= ;DYKE DELTA JD2" <= b>(Eventually)

"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold

"TURBONETICS"_TO4E50 Turbo

=A0

<= font size=3D"2" color=3D"black" face=3D"Arial">From:= David Leonard <wdleon= ard@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Monday, July 18, 2011 = 9:34 PM
Subject: [FlyRotary] Re: Ok = Here are the important flywheel measurements=

Kelly, here is the starter measurement. This is the starter that Tracy= recommends, I forget which one that is. =A0From the engine side of the mounting flange, to the far end of the tear tooth, I measure 1.754 - give or take.

=A0

--=A0


David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.Rot= aryRoster.net
http://RotaryRoster.= net

On Mon, Jul 18, 2011 at 6:16 PM, Kelly Troyer <keltro@att.net> wrote:

Dave,

=A0=A0 While they are at it have them turn the pressure plate surface down to the pressure plate mounting

level so all of the rubber osolator is on a flat surface without a 0.018 step at = the outer edge.......Or

you could put a washer under the drive plate (like the top washer)............B= ut this would put the drive

plate further forward on the input shaft splines the thickness of the washer..........I do not khow if this

would pose a problem or not...........

=A0

Kelly Troyer
"= ;DYKE DELTA JD2" <= b>(Eventually)

"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold

"TURBONETICS"_TO4E50 Turbo

=A0

<= font size=3D"2" color=3D"black" face=3D"Arial">From:= David Leonard <wdleon= ard@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Monday, July 18, 2011 = 7:55 PM
Subject: [FlyRotary] Re: Ok = Here are the important flywheel measurements=

Well,=A0 NOW you tell me...=A0 :-)=A0=A0 Yea, that was going to be an issues reguardless of which solution we chose.=A0 I think I will bring mine to a machine shop and let them figure it out=A0 :-)<= /p>

=A0

--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.Rot= aryRoster.net
http://RotaryRoster.= net

On Mon, Jul 18, 2011 at 4:49 PM, Kelly Troyer <keltro@att.net> wrote:

Dave,

=A0

=A0=A0 Forgot to add that there are 3 clutch pressure plate locating dowels in the flywheel.........You

will have to knock these out with a punch as their position will not let you properly center the

RD1X drive plate and will not let the drive plate "Float" properly..............I have not come up

with a method yet to center the drive plate with the absolute accuracy needed=A0fo= r drilling the

flywheel for the drive plate attach bolts...........Maybe some of the group with more=A0machinists

skills than I can make a recommendation=A0!!..................Also the rear of the attach bolt holes

will need to be spotfaced to provide a flat surface for the bolt head or nut and washer=A0 from

what I have observed on the backside of my flywheel........................<:)=A0=A0

=A0

Kelly Troyer
"= ;DYKE DELTA JD2" <= b>(Eventually)

"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold

"TURBONETICS"_TO4E50 Turbo

=A0

<= font size=3D"2" color=3D"black" face=3D"Arial">From:= Kelly Troyer <keltro@att.n= et>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Monday, July 18, 2011 = 6:29 PM


Subject: [FlyRotary] Ok Here= are the important flywheel measurements

Dave,

=A0=A0 The link attached shows the prolite version (9.8 lbs) on the left in the photo.............Do you have=A0your starter flange

to gear measurement=A0handy as my RD1X starter=A0(not the turbo model)=A0is 55 miles away at the moment...........=A0

=A0

=A0

Kelly Troyer
"= ;DYKE DELTA JD2" <= b>(Eventually)

"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold

"TURBONETICS"_TO4E50 Turbo

=A0

<= font size=3D"2" color=3D"black" face=3D"Arial">From:= David Leonard <wdleon= ard@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Monday, July 18, 2011 = 6:18 PM
Subject: [FlyRotary] Re: Ok = Here are the important flywheel measurements=

OK Kelly,

=A0

Thanks to all your hard work and research, I have ordered up the Prolite 9.8 lb version o= f this.=A0 Decided that I was done with the flex plates.=A0 Thanks for locating a great price.=A0 I am a little nervous that the picture does not look right, but I guess I can always return it.=

Like you, I figure we will solve the starter issue one way or another.

=A0

--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.Rot= aryRoster.net
http://RotaryRoster.= net

On Sat, Jul 16, 2011 at 2:21 PM, Kelly Troyer <keltro@att.net> wrote:

Dave and All,

=A0

=A0=A0=A0=A0=A0=A0=A0=A0=A0 Ok Dave the "ACT" "Streetlite" 13.8 lb flywheel was jus= t delivered and I am in process of taking

your measurements to see where we stand................This flywheel is a thing = of beauty (to a RotorHead)

and my RD1C drive plate will bolt to it with no problem (through drill and spotfac= e the rear of the flywheel

because it has a slight taper in that area).............I just have to verify just where the RD1C drive splines

will be positioned (fore and aft) on the input shaft compared to the RX7 flexplate.............The clutch plate

friction area is slightly raised (about 0.065) above the clutch mount area and I wou= ld probably take it

down tto the clutch level (probably not necessary but would reduce weight slightly.............I have a 93-95

Turbo starter on the way (should take care of starter mesh problem)..............= If you are interested I can

guide you to another 93-95 starter (used $49.00 with/shipping) if it is still for sale.............

=A0=A0=A0=A0=A0=A0=A0 One other thing at this time..............The lighter 9.8 lb version may be usable but it is listed as 116

ring gear teeth and I have not found out what its diameter is and what starter w= ould be used with it......

=A0=A0=A0=A0=A0=A0=A0 I suspect it may be the diameter of the NA 13B flywheels and may use the 86-91=A0NA manual trans

starter............You need to talk to the manufacturer..........They are in Lancast= er, Calif............The 9.8 lb

version is a little more expensive due to more extensive machine work to reduce weight.............See the

link below............The link to THMotorsports has the best price I have found = on the 9.8 lb flywheel......The

photo on their page is not the Rotary 9.8 lb version...........=A0<= /span>

=A0

=A0

=A0

=A0

Kelly Troyer
"= ;DYKE DELTA JD2" <= b>(Eventually)

"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold

"TURBONETICS"_TO4E50 Turbo

=A0

<= font size=3D"2" color=3D"black" face=3D"Arial">From:= Kelly Troyer <keltro@att.n= et>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Friday, July 15, 2011 = 12:34 PM
Subject: [FlyRotary] Re: Ok = Here are the important flywheel measurements=

Dave and All,

=A0

=A0=A0=A0=A0=A0=A0=A0=A0 Sounds encourageing...............Replacing the starter with turbo model wo= uld seem to be

least expensive and safer than adding additional ring gear + welding.............= .I also echo what

Bill and Bobby have said concerning the Al Wick fix and getting Tr= acy's thoughts about cause

of problem and perhaps need for periodic inspection and/or rubber=A0isolator replacement........=A0

=A0

Kelly Troyer
"= ;DYKE DELTA JD2" <= b>(Eventually)

"13B ROTARY"_ Engine
"RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold

"TURBONETICS"_TO4E50 Turbo

=A0

<= font size=3D"2" color=3D"black" face=3D"Arial">From:= David Leonard <wdleon= ard@gmail.com>


To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thursday, July 14, 201= 1 11:41 PM
Subject: [FlyRotary] Ok = Here are the important flywheel measurements

I finally got to the hangar and measured out my S5 turbo flywheel and the remains of my S= 5 flexplate.=A0 The results are very encouraging, even as good as the possibl= y could be to make the swap, but I only had ten min at the hangar before I ha= d to leave to pick up my daughter from daycare, so they are one try and slightly sloppy... I make no guarantees.=A0 The height measurements of the flex plat= e were particularly suspect because, well, mine is all warped and broken.

Ring Gear Diameter - Perfect fit.=A0 As we suspected, same size, same tooth spacing.

Ring Gear Fore-Aft Placement= - As measured from the underside of the big nut. (for all further reference, aft means aft in the CAR).=A0 The flex plate puts the aft side of the ring gear 1.290 inches from the front of the big nut. The flywheel puts it 0.913.=A0 So the flex plate puts the ring gear (appx) 0.377 in. further aft.=A0 This is actually fortuitous because it just so happens that the ring gear thickn= ess is .365 ...=A0=A0=A0 So all we have to do to fix the discrepancy is weld and extra ring gears onto to the flywheel ring gear and there will be teeth that the starter can reach:(bottom of the page.. the cost $80)
http://mazd= atrix.com/flywheel.htm
It may also be possible to fix the discrepancy by changing the starter... w= ill look into that.

Damper Plate Placement - On = the flywheel, the mounting surface is proud (or aft) of the ring gear.=A0 On th= e flex plate, the mounting surface is recessed (or forward) from the ring gea= r. A

nd it all pretty much works out.=A0 That position on the flywheel will vary somewhat depending on which flywheel you have and how much wear you have on= the clutch slip surface. But on my (I assume well-worn) flywheel the placement = was 0.965 while the flex plate was 0.950.=A0 Pretty damn close and given measurement error it might me meant to be right on.=A0 Or, any difference could be made up by trimming down the spline on the damper plate or removin= g or adding spacers between the two.

So in my mind, a flywheel is the way to go.=A0 Stout, easy to get, pick you= r weight, only mods seem to be drilling the mounting holes and welding on a second gear ring.

--
David Leonard

=A0




--
David Leonard

Turbo Rotary RV-6 N4VY
http://N4VY.Rota= ryRoster.net
http://RotaryRoster.n= et




--
David Leonard

Tu= rbo Rotary RV-6 N4VY
http://N4V= Y.RotaryRoster.net
http://Rotary= Roster.net
--bcaec52be7b301665904a87a437c--