From: "Ernest Christley echristley@att.net" <flyrotary@lancaironline.net>
Received-SPF: none
 receiver=logan.com; client-ip=98.137.69.86; envelope-from=echristley@att.net
Date: Sun, 20 Dec 2020 18:42:05 +0000 (UTC)
To: 
	"Le Roux Breytenbach breytenbachleroux@gmail.com" <flyrotary@lancaironline.net>
Message-ID: <2054468186.2145928.1608489725115@mail.yahoo.com>
In-Reply-To: <list-1054140@logan.com>
References: <list-1054140@logan.com>
Subject: Re: [FlyRotary] Re: eliminate cushion drive
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 A slightly different solution along the same lines, that is readily availa=
ble:
https://www.mcmaster.com/flexible-couplings/high-speed-vibration-damping-fl=
exible-shaft-couplings-9/
    On Sunday, December 20, 2020, 12:05:09 AM EST, Le Roux Breytenbach brey=
tenbachleroux@gmail.com <flyrotary@lancaironline.net> wrote: =20
=20
 For interest :
Come across this flex-coupling interesting that it is design to connect a f=
lywheel to a output shaft.
High speed up to 3500 - 7500 rpm =C2=A0210 nm - 3240 nm
https://pdf.directindustry.com/pdf/sgf-gmbh-co-kg/sgf-sgflex-3f-flex-coupli=
ng-assembly-us/34796-787217.html#open

Sent from my iPhoneLe Roux Breytenbach=C2=A0

On 19 Dec 2020, at 08:05, Stephen Izett stephen.izett@gmail.com <flyrotary@=
lancaironline.net> wrote:


=EF=BB=BF Thanks very much Neil.=C2=A0A plan could be, should the RD1C spin=
es parts strength be questionable, leave it riveted to the 0.2inch thick al=
uminium damper plate. Cut/machine that plate down to the same circumference=
 as the spined part, approx 5 inch, and Drill the 6 x 10mm holes and attach=
 direct to the EShaft through the spacer machined to correct size.Steve Ize=
tt

Sent from my iPhone

On 19 Dec 2020, at 6:42 am, flyrotary@lancaironline.net wrote:


=EF=BB=BF<!--#yiv0650701602 _filtered {} _filtered {}#yiv0650701602 #yiv065=
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Steve,

=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 Further to your measurements.=C2=A0 The centre to centre of=
 the holes in the counterweight (E shaft)=C2=A0 is 98mm.=C2=A0 Bolt size is=
 10mm which makes the outer edge of the bolts 108mm or 4.25 inches.=C2=A0=
=C2=A0=C2=A0 The OD measurement of my spacer is approx. 5 inches, so it wou=
ld appear possible to mount tracy,s splined drive shaft plate direct to the=
 E shaft with the 6 x 10mm bolts and spaced out with my spacer which may ha=
ve to be adjusted for height =E2=80=93 a simple lathe job.=C2=A0 This as we=
ll known eliminates any =E2=80=98damping=E2=80=9D in the drive line.

=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 I do not have the measurements of just how high the splined=
 plate has to be to clear the end of the E Shaft.=C2=A0 Again everything is=
 possible with time and money!!

A=C2=A0 question to the group --- What is the Splined drive plate made from=
?=C2=A0 I thought it was simply a machined cast, but it has been suggested =
it is a =E2=80=9Csintered=E2=80=9D casting. (weaker than normal casting) =
=C2=A0Does anyone know?

Neil.


 =20
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<html><head></head><body><div class=3D"ydp21dec9e0yahoo-style-wrap" style=
=3D"font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px=
;"><div></div>
        <div dir=3D"ltr" data-setdir=3D"false">A slightly different solutio=
n along the same lines, that is readily available:</div><div dir=3D"ltr" da=
ta-setdir=3D"false"><br></div><div dir=3D"ltr" data-setdir=3D"false"><a hre=
f=3D"https://www.mcmaster.com/flexible-couplings/high-speed-vibration-dampi=
ng-flexible-shaft-couplings-9/" rel=3D"nofollow" target=3D"_blank">https://=
www.mcmaster.com/flexible-couplings/high-speed-vibration-damping-flexible-s=
haft-couplings-9/</a></div><div><br></div>
       =20
        </div><div id=3D"yahoo_quoted_8562805095" class=3D"yahoo_quoted">
            <div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, s=
ans-serif;font-size:13px;color:#26282a;">
               =20
                <div>
                    On Sunday, December 20, 2020, 12:05:09 AM EST, Le Roux =
Breytenbach breytenbachleroux@gmail.com &lt;flyrotary@lancaironline.net&gt;=
 wrote:
                </div>
                <div><br></div>
                <div><br></div>
                <div><div id=3D"yiv0650701602"><div><div>For interest :</di=
v><div><br></div><div>Come across this flex-coupling interesting that it is=
 design to connect a flywheel to a output shaft.</div><div><br></div><div>H=
igh speed up to 3500 - 7500 rpm &nbsp;</div><div>210 nm - 3240 nm</div><div=
><br></div>https://pdf.directindustry.com/pdf/sgf-gmbh-co-kg/sgf-sgflex-3f-=
flex-coupling-assembly-us/34796-787217.html#open<div><br><br><div dir=3D"lt=
r">Sent from my iPhone<div>Le Roux Breytenbach&nbsp;</div></div><div dir=3D=
"ltr"><br><blockquote type=3D"cite">On 19 Dec 2020, at 08:05, Stephen Izett=
 stephen.izett@gmail.com &lt;flyrotary@lancaironline.net&gt; wrote:<br><br>=
</blockquote></div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF Tha=
nks very much Neil.&nbsp;<div>A plan could be, should the RD1C spines parts=
 strength be questionable, leave it riveted to the 0.2inch thick aluminium =
damper plate. Cut/machine that plate down to the same circumference as the =
spined part, approx 5 inch, and Drill the 6 x 10mm holes and attach direct =
to the EShaft through the spacer machined to correct size.<div>Steve Izett<=
br><br><div dir=3D"ltr">Sent from my iPhone</div><div dir=3D"ltr"><br><bloc=
kquote type=3D"cite">On 19 Dec 2020, at 6:42 am, flyrotary@lancaironline.ne=
t wrote:<br><br></blockquote></div><blockquote type=3D"cite"><div dir=3D"lt=
r">=EF=BB=BF<style><!--
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--></style><div class=3D"yiv0650701602WordSection1"><p class=3D"yiv06507016=
02MsoNormal"><span lang=3D"EN-AU">Steve,</span></p><p class=3D"yiv065070160=
2MsoNormal"><span lang=3D"EN-AU">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Further to your measuremen=
ts.&nbsp; The centre to centre of the holes in the counterweight (E shaft)&=
nbsp; is 98mm.&nbsp; Bolt size is 10mm which makes the outer edge of the bo=
lts 108mm or 4.25 inches.&nbsp;&nbsp;&nbsp; The OD measurement of my spacer=
 is approx. 5 inches, so it would appear possible to mount tracy,s splined =
drive shaft plate direct to the E shaft with the 6 x 10mm bolts and spaced =
out with my spacer which may have to be adjusted for height =E2=80=93 a sim=
ple lathe job.&nbsp; This as well known eliminates any =E2=80=98damping=E2=
=80=9D in the drive line.</span></p><p class=3D"yiv0650701602MsoNormal"><sp=
an lang=3D"EN-AU">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; I do not have the measurements of just ho=
w high the splined plate has to be to clear the end of the E Shaft.&nbsp; A=
gain everything is possible with time and money!!</span></p><p class=3D"yiv=
0650701602MsoNormal"><span lang=3D"EN-AU">A&nbsp; question to the group ---=
 What is the Splined drive plate made from?&nbsp; I thought it was simply a=
 machined cast, but it has been suggested it is a =E2=80=9Csintered=E2=80=
=9D casting. (weaker than normal casting) &nbsp;Does anyone know?</span></p=
><p class=3D"yiv0650701602MsoNormal"><span lang=3D"EN-AU">Neil.</span></p><=
/div></div></blockquote></div></div></div></blockquote></div></div></div></=
div>
            </div>
        </div></body></html>
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