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Sat, 16 Jul 2011 14:21:40 PDT X-Mailer: YahooMailWebService/0.8.112.307740 References: Message-ID: <1310851300.30129.YahooMailNeo@web83911.mail.sp1.yahoo.com> Date: Sat, 16 Jul 2011 14:21:40 -0700 (PDT) From: Kelly Troyer Reply-To: Kelly Troyer Subject: Ok Here are the important flywheel measurements To: Rotary motors in aircraft MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="0-1105647249-1310851300=:30129" --0-1105647249-1310851300=:30129 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Dave and All,=0A=A0=0A=A0=A0=A0=A0=A0=A0=A0=A0=A0 Ok Dave the "ACT" "Street= lite" 13.8 lb flywheel was just delivered and I am in process of taking=0Ay= our measurements to see where we stand................This flywheel is a th= ing of beauty (to a RotorHead)=0Aand my RD1C drive plate will bolt to it wi= th no problem (through drill and spotface the rear of the flywheel=0Abecaus= e it has a slight taper in that area).............I just have to verify jus= t where the RD1C drive splines =0Awill be positioned (fore and aft) on the = input shaft compared to the RX7 flexplate.............The clutch plate=0Afr= iction area is slightly raised (about 0.065) above the clutch mount area an= d I would probably take it=0Adown tto the clutch level (probably not necess= ary but would reduce weight slightly.............I have a 93-95=0ATurbo sta= rter on the way (should take care of starter mesh problem)..............If = you are interested I can=0Aguide you to another 93-95 starter (used $49.00 = with/shipping) if it is still for sale.............=0A=A0=A0=A0=A0=A0=A0=A0= One other thing at this time..............The lighter 9.8 lb version may b= e usable but it is listed as 116=0Aring gear teeth and I have not found out= what its diameter is and what starter would be used with it......=0A=A0=A0= =A0=A0=A0=A0=A0 I suspect it may be the diameter of the NA 13B flywheels an= d may use the 86-91=A0NA manual trans=0Astarter............You need to talk= to the manufacturer..........They are in Lancaster, Calif............The 9= .8 lb=0Aversion is a little more expensive due to more extensive machine wo= rk to reduce weight.............See the=0Alink below............The link to= THMotorsports has the best price I have found on the 9.8 lb flywheel......= The=0Aphoto on their page is not the Rotary 9.8 lb version...........=A0=0A= =A0=0Ahttp://www2.advancedclutch.com/products/xact_flywheels.aspx=0A=A0=0A= =A0=0Ahttp://thmotorsports.com/act/act_flywheel_prolite/600140/i-47718.aspx= =0A=0AKelly Troyer=0A"DYKE DELTA JD2" (Eventually)=0A"13B ROTARY"_ Engine= =0A"RWS"_RD1C/EC2/EM2=0A"MISTRAL"_Backplate/Oil Manifold=0A"TURBONETICS"_TO= 4E50 Turbo=0A=0AFrom: Kelly Troyer =0ATo: Rotary motors in = aircraft =0ASent: Friday, July 15, 2011 12:34 = PM=0ASubject: [FlyRotary] Re: Ok Here are the important flywheel measuremen= ts=0A=0A=0ADave and All,=0A=A0=0A=A0=A0=A0=A0=A0=A0=A0=A0 Sounds encouragei= ng...............Replacing the starter with turbo model would seem to be=0A= least expensive and safer than adding additional ring gear + welding.......= .......I also echo what=0ABill and Bobby have said concerning the Al Wick f= ix and getting Tracy's thoughts about cause=0Aof problem and perhaps need f= or periodic inspection and/or rubber=A0isolator replacement........=A0=0A= =0AKelly Troyer=0A"DYKE DELTA JD2" (Eventually)=0A"13B ROTARY"_ Engine=0A"R= WS"_RD1C/EC2/EM2=0A"MISTRAL"_Backplate/Oil Manifold=0A"TURBONETICS"_TO4E50 = Turbo=0A=0AFrom: David Leonard =0ATo: Rotary motors in= aircraft =0ASent: Thursday, July 14, 2011 11:= 41 PM=0ASubject: [FlyRotary] Ok Here are the important flywheel measurement= s=0A=0A=0AI finally got to the hangar and measured out my S5 turbo flywheel= and the remains of my S5 flexplate.=A0 The results are very encouraging, e= ven as good as the possibly could be to make the swap, but I only had ten m= in 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.=A0 The he= ight measurements of the flex plate were particularly suspect because, well= , mine is all warped and broken.=0A=0ARing Gear Diameter - Perfect fit.=A0 = As we suspected, same size, same tooth spacing.=0A=0ARing Gear Fore-Aft Pla= cement - As measured from the underside of the big nut. (for all further re= ference, 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 ri= ng gear thickness is .365 ...=A0=A0=A0 So all we have to do to fix the disc= repancy is weld and extra ring gears onto to the flywheel ring gear and the= re will be teeth that the starter can reach:(bottom of the page.. the cost = $80)=0Ahttp://mazdatrix.com/flywheel.htm=0AIt may also be possible to fix t= he discrepancy by changing the starter... will look into that.=0A=0ADamper = Plate Placement - On the flywheel, the mounting surface is proud (or aft) o= f the ring gear.=A0 On the flex plate, the mounting surface is recessed (or= forward) from the ring gear. And it all pretty much works out.=A0 That pos= ition on the flywheel will vary somewhat depending on which flywheel you ha= ve and how much wear you have on the clutch slip surface. But on my (I assu= me well-worn) flywheel the placement was 0.965 while the flex plate was 0.9= 50.=A0 Pretty damn close and given measurement error it might me meant to b= e right on.=A0 Or, any difference could be made up by trimming down the spl= ine on the damper plate or removing or adding spacers between the two.=0A= =0ASo in my mind, a flywheel is the way to go.=A0 Stout, easy to get, pick = your weight, only mods seem to be drilling the mounting holes and welding o= n a second gear ring.=0A=0A-- =0ADavid Leonard=0A=0ATurbo Rotary RV-6 N4VY= =0Ahttp://N4VY.RotaryRoster.net=0Ahttp://RotaryRoster.net --0-1105647249-1310851300=:30129 Content-Type: text/html; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable
Dave = and All,
 
        =   Ok Dave the "ACT" "Streetlite" 13.8 lb flywheel was just delivered a= nd 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 spl= ines
will be positione= d (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 proba= bly take it
down tto the clut= ch 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 usa= ble 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 fl= ywheels and may use the 86-91 NA manual trans
starter..........= ..You need to talk to the manufacturer..........They are in Lancaster, Cali= f............The 9.8 lb
version is a litt= le 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 ve= rsion........... 
 
 
 
 
Kelly Troyer
"DYKE DELTA JD2" (Eventually)
"13B ROTARY"_ Engine
"= RWS"_RD1C/EC2/EM2
"MISTRAL"_Backplate/Oil Manifold
"TURBONETICS"_TO4E50 Turb= o

From: Kelly Troyer <keltro@att.net>
To: Rotary motors in aircraft <flyrot= ary@lancaironline.net>
Sent: Friday, July 15, 2011 12:34 PM
Subject: [FlyRotary] Re: Ok Here are the important flywheel = measurements

Dave and All,
 
         Sounds encourag= eing...............Replacing the starter with turbo model would seem to be<= /SPAN>
least expensive and safer than adding additional ring gear + wel= ding..............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 rubbe= r 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 <wd= leonard@gmail.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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 t= urbo flywheel and the remains of my S5 flexplate.  The results are ver= y 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 daught= er from daycare, so they are one try and slightly sloppy... I make no guara= ntees.  The height measurements of the flex plate were particularly su= spect because, well, mine is all warped and broken.

Ring Gear Dia= meter - Perfect fit.  As we suspected, same size, same tooth spaci= ng.

Ring Gear Fore-Aft Placement - As measured from the under= side 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 pla= te puts the ring gear (appx) 0.377 in. further aft.  This is actually fortuitous because it just so happens that the ring gear thicknes= s 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.

D= amper 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. And 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. B= ut 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 spac= ers between the two.

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

--
David Leona= rd

Turbo Rotary RV-6 N4VY
http://N4VY.RotaryRoster.net
http://Rotar= yRoster.net




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