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Re: [Shop-talk] Mower blade orientaaion relative to piston

To: "jdinnis@gmail.com" <jdinnis@gmail.com>
Subject: Re: [Shop-talk] Mower blade orientaaion relative to piston
From: DAVID MASSEY <dave1massey@cs.com>
Date: Wed, 19 May 2021 13:47:55 +0000 (UTC)
Cc: "Shop-talk@autox.team.net" <Shop-talk@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: Shop-talk@autox.team.net
References: <000601d74c30$1ae5adc0$50b10940$@GMail.com> <MW2PR07MB397889AB84D2574BA8B851DCBB2C9@MW2PR07MB3978.namprd07.prod.outlook.com> <5ff69898-d0ef-8db4-db6d-f57f9b5bbdcf@comcast.net> <CAG1pxgaBSqYewhJsaMJPPRkp6xBJ5YNUE5vSLVO4RCGhrSgFUQ@mail.gmail.com> <7e18e49a-63ec-bf3a-ccfd-429ab689d2f2@comcast.net> <09849A79-7FD8-4055-B9E4-1D333CCCE8E2@icloud.com> <07a3532e-f33e-7d00-2ad5-43ecdf57a480@comcast.net> <CAO8Q7CNr0VscHxcSoLDbZ5o+erBCSZ+0NdSsoP-Wa6DxrjTzhw@mail.gmail.com> <CANuE7YC1M-5Q_oWbvtnDtxuV78pOJ3KjqHL-+h5OVNmgCWi5dA@mail.gmail.com> <341154453.1240720.1621425101785@mail.yahoo.com> <CANuE7YAP_BRLW+zC8QCqAGAOGL-Z3J+fRLj1R9PDqrQZR-grGQ@mail.gmail.com> x64; rv:88.0) Gecko/20100101 Firefox/88.0
--===============1956115859512891335==
        boundary="----=_Part_1110336_980487818.1621432075943"

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Content-Transfer-Encoding: quoted-printable

 That would break the hearts of the prop pilots who told me that.
;-)
=20
Dave=20

=20
=20
-----Original Message-----
From: John Innis <jdinnis@gmail.com>
To: DAVID MASSEY <dave1massey@cs.com>
Cc: fishplate@gmail.com <fishplate@gmail.com>; Shop-talk@autox.team.net <Sh=
op-talk@autox.team.net>
Sent: Wed, May 19, 2021 7:37 am
Subject: Re: [Shop-talk] Mower blade orientaaion relative to piston

Common misconception.=C2=A0 You have to remember that almost all props are =
driven by either reciprocating engines (suck, squeeze, bang, blow) or turbi=
ne engines (one long continious blow job).=C2=A0=20

On Wed, May 19, 2021 at 6:51 AM DAVID MASSEY <dave1massey@cs.com> wrote:

 I dunno.=C2=A0 I always heard that prop pilots were always cool.=C2=A0 The=
y screw their way across the country whereas jet pilots just suck and blow.
=20
Dave=20

=20
=20
-----Original Message-----
From: John Innis <jdinnis@gmail.com>
To: Jeff Scarbrough <fishplate@gmail.com>
Cc: shop-talk@autox.team.net <Shop-talk@autox.team.net>
Sent: Wed, May 19, 2021 5:23 am
Subject: Re: [Shop-talk] Mower blade orientaaion relative to piston

The whole propeller thing is really overstated.=C2=A0 It is just there to k=
eep the pilot cool.=C2=A0 If the propeller stops turning, the pilot often b=
egins sweating.=20

On Wed, May 19, 2021 at 5:15 AM Jeff Scarbrough <fishplate@gmail.com> wrote=
:

Not to mention that there are two magnetos.=C2=A0 You don't want your lawn =
mower quitting in mid-air.
On Tue, May 18, 2021, 23:15 Bob Spidell <bspidell@comcast.net> wrote:

Magnetos still power the vast majority of small aircraft piston engines;=20
they're a bit more complicated though. Mags in good nick will throw a=20
really hot spark; they're always 'hot' and the only way to disable them=20
is to ground the primary coil by a 'P lead.'

On 5/18/2021 8:03 PM, Thomas Coradeschi wrote:
> You=E2=80=99re almost certainly looking at a magneto ignition system in a=
ll of those small engines=E2=80=A6 Bog simple indeed!
>
> =E2=80=94
> Tom Coradeschi
> tjcora@icloud.com
>
>
>> On 18 May 2021, at 10:53 PM, Bob Spidell <bspidell@comcast.net> wrote:
>>
>> re: "... they are using iron mass of the blade as part of the inductance=
 field to signal the position for coil firing ..."
>>
>> That was my guess, based on what they told me; the motor was otherwise i=
n good shape (how I managed to get it back together still amazes me). IIRC,=
 it was a Tecumseh 5HP engine. The name of the shop was 'Knife Stalkers.'
>>
>> I'm looking into possibly rebuilding a couple chainsaw motors, the coil =
and 'points,' or whatever solid state switch they are using, are very simpl=
istic. There may be a magnet in the crank gear to trigger the spark. I use =
Pertronix in several cars and, except for one they have a cap on the distri=
butor cam with magnets to fire the electronic switch. Surprising to me, the=
 one on my 4-cyl Austin-Healey doesn't use the cap, apparently the lobes on=
 the distributor cam are sufficient to fire the Hall Effect sensor.
>>
>> bs
>>
>> On 5/18/2021 7:38 PM, old dirtbeard wrote:
>>> Hi Bob,
>>>
>>> I believe you, of course, but I have never heard this before.=C2=A0 I h=
ave a Craftsman 21" walk behind and I usually sharpen the blade and do main=
tenance this month, so I think I will see if the engine will fire with the =
blade removed for sharpening.
>>>
>>> For this to make sense to me, there would need to be some sensor on the=
 blade, or they are using iron mass of the blade as part of the inductance =
field to signal the position for coil firing. The aluminum sump of the moto=
r protrudes through the steel deck of the mower, so I suppose it is possibl=
e. There is quite an air gap between the blade and the sump of the engine, =
however.
>>>
>>> You have me very curious and I will let you know if the mower will fire=
 without the blade attached (if it does, I will not let it run as it is har=
d to predict what would happen without that flywheel attached to the cranks=
haft).
>>>
>>> best,
>>>
>>> doug
>>>
>>> On Tue, May 18, 2021 at 5:35 PM Bob Spidell <bspidell@comcast.net> wrot=
e:
>>> Possibly of some interest: I had a Craftsman walk-behind that quit runn=
ing suddenly. I tore the engine down, didn't find anything, then finally to=
ok it to a repair shop. They told me the blade had a crack in it that cause=
d the problem;=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0supposedly th=
e blade is part of a timing loop that fires the spark. Sort of makes sense =
if you think of the blade as a flywheel with a position sensor on it.
>>>
>>> Bob
>>>
>>> On 5/18/2021 2:55 PM, Brian and Wendy Warrick wrote:
>>>> I run Snapper walk behind mowers and have never gave it a thought. I c=
an't see why it would matter. If it did, they would have designed the adapt=
er differently.
>>>>
>>>> Brian
>>>> Nampa, ID
>>>>
>>>> From: Shop-talk <shop-talk-bounces@autox.team.net> on behalf of Karl V=
acek <stearman809@gmail.com>
>>>> Sent: Tuesday, May 18, 2021 3:52 PM
>>>> To: 'shop-talk@autox.team.net' <Shop-talk@autox.team.net>
>>>> Subject: [Shop-talk] Mower blade orientaaion relative to piston
>>>>=C2=A0 =C2=A0
>>>> Last time I sharpened my 21=E2=80=9D walk-behind mower blade I thought=
 of something that=E2=80=99s never occurred to me, after using the same bra=
nd of mower for 25 years..
>>>>=C2=A0 =C2=A0
>>>> On a Snapper, the blade can actually go on any way onto the square ada=
pter keyed to the crankshaft.=C2=A0 The mounting point is square, no pins, =
no longer side, nothing.
>>>>=C2=A0 =C2=A0
>>>> One way would be aligned with the cylinder at TDC/BDC, and the other w=
ay would be across.=C2=A0 It=E2=80=99s been off many times and there=E2=80=
=99s no way to tell how it was mounted originally.=C2=A0 The manual is sile=
nt on this.
>>>>=C2=A0 =C2=A0
>>>> Power stroke shouldn=E2=80=99t matter, but maybe some dynamic issue on=
e way or the other?
>>>>=C2=A0 =C2=A0
>>>> Thanks!
>>>> Karl
>>>>
>>> _______________________________________________
>>>
>>> Shop-talk@autox.team.net
>>> Donate: http://www.team.net/donate.html
>>> Suggested annual donation=C2=A0 $12.96
>>> Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/=
archive
>>>
>>> Unsubscribe/Manage: http://autox.team.net/mailman/options/shop-talk/dir=
tbeard@gmail.com
>>>
>> _______________________________________________
>>
>> Shop-talk@autox.team.net
>> Donate: http://www.team.net/donate.html
>> Suggested annual donation=C2=A0 $12.96
>> Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/a=
rchive
>>
>> Unsubscribe/Manage: http://autox.team.net/mailman/options/shop-talk/tjco=
ra@icloud.com
>>
> _______________________________________________
>
> Shop-talk@autox.team.net
> Donate: http://www.team.net/donate.html
> Suggested annual donation=C2=A0 $12.96
> Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/ar=
chive
>
> Unsubscribe/Manage: http://autox.team.net/mailman/options/shop-talk/bspid=
ell@comcast.net
>

_______________________________________________

Shop-talk@autox.team.net
Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/arch=
ive

te@gmail.com


_______________________________________________

Shop-talk@autox.team.net
Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/arch=
ive

@gmail.com




--=20
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D
=3D Never offend people with style when you=C2=A0=C2=A0 =3D
=3D can offend with substance --- Sam Brown=C2=A0 =3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D_______________________________________________

Shop-talk@autox.team.net
Archive: http://www.team.net/pipermail/shop-talk http://autox.team.net/arch=
ive

ssey@cs.com




--=20
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D
=3D Never offend people with style when you=C2=A0=C2=A0 =3D
=3D can offend with substance --- Sam Brown=C2=A0 =3D
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D
------=_Part_1110336_980487818.1621432075943
Content-Transfer-Encoding: quoted-printable


<div style=3D"color:black;font: 12pt Arial, Helvetica, sans-serif;">
<div> <font size=3D"3">That would break the hearts of the prop pilots who t=
old me that.</font></div>

<div><font size=3D"3"><br>
</font></div>

<div><font size=3D"3">;-)</font><br>
</div>

<div> <br>
</div>

<div style=3D"clear:both"><font size=3D"4">Dave </font><br>
<br>
</div>

<div> <br>
</div>

<div> <br>
</div>

<div style=3D"font-family:arial,helvetica;font-size:10pt;color:black"><font=
 size=3D"2">-----Original Message-----<br>
From: John Innis &lt;jdinnis@gmail.com&gt;<br>
To: DAVID MASSEY &lt;dave1massey@cs.com&gt;<br>
Cc: fishplate@gmail.com &lt;fishplate@gmail.com&gt;; Shop-talk@autox.team.n=
et &lt;Shop-talk@autox.team.net&gt;<br>
Sent: Wed, May 19, 2021 7:37 am<br>
Subject: Re: [Shop-talk] Mower blade orientaaion relative to piston<br>
<br>

<div id=3D"yiv2789538471">
<div>
<div dir=3D"ltr">Common misconception.&nbsp; You have to remember that almo=
st all props are driven by either reciprocating engines (suck, squeeze, ban=
g, blow) or turbine engines (one long continious blow job).&nbsp; <br clear=
=3D"none"></div>
<br clear=3D"none">
<div class=3D"yiv2789538471yqt7428435386" id=3D"yiv2789538471yqt44161">
<div class=3D"yiv2789538471gmail_quote">
<div class=3D"yiv2789538471gmail_attr" dir=3D"ltr">On Wed, May 19, 2021 at =
6:51 AM DAVID MASSEY &lt;<a rel=3D"nofollow noopener noreferrer" shape=3D"r=
ect" ymailto=3D"mailto:dave1massey@cs.com"; target=3D"_blank" href=3D"mailto=
:dave1massey@cs.com">dave1massey@cs.com</a>&gt; wrote:<br clear=3D"none"></=
div>
<blockquote class=3D"yiv2789538471gmail_quote" style=3D"margin:0px 0px 0px =
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex;">

<div style=3D"color:black;font:12pt Arial, Helvetica, sans-serif;">

<div> <font size=3D"3">I dunno.&nbsp; I always heard that prop pilots were =
always cool.&nbsp; They screw their way across the country whereas jet pilo=
ts just suck and blow.</font><br clear=3D"none">
</div>



<div> <br clear=3D"none">
</div>



<div style=3D"clear:both;"><font size=3D"4">Dave </font><br clear=3D"none">
<br clear=3D"none">
</div>



<div> <br clear=3D"none">
</div>



<div> <br clear=3D"none">
</div>



<div style=3D"font-family:arial, helvetica;font-size:10pt;color:black;"><fo=
nt size=3D"2">-----Original Message-----<br clear=3D"none">
From: John Innis &lt;<a rel=3D"nofollow noopener noreferrer" shape=3D"rect"=
 ymailto=3D"mailto:jdinnis@gmail.com"; target=3D"_blank" href=3D"mailto:jdin=
nis@gmail.com">jdinnis@gmail.com</a>&gt;<br clear=3D"none">
To: Jeff Scarbrough &lt;<a rel=3D"nofollow noopener noreferrer" shape=3D"re=
ct" ymailto=3D"mailto:fishplate@gmail.com"; target=3D"_blank" href=3D"mailto=
:fishplate@gmail.com">fishplate@gmail.com</a>&gt;<br clear=3D"none">
Cc: <a rel=3D"nofollow noopener noreferrer" shape=3D"rect" ymailto=3D"mailt=
o:shop-talk@autox.team.net" target=3D"_blank" href=3D"mailto:shop-talk@auto=
x.team.net">shop-talk@autox.team.net</a> &lt;<a rel=3D"nofollow noopener no=
referrer" shape=3D"rect" ymailto=3D"mailto:Shop-talk@autox.team.net"; target=
=3D"_blank" href=3D"mailto:Shop-talk@autox.team.net";>Shop-talk@autox.team.n=
et</a>&gt;<br clear=3D"none">
Sent: Wed, May 19, 2021 5:23 am<br clear=3D"none">
Subject: Re: [Shop-talk] Mower blade orientaaion relative to piston<br clea=
r=3D"none">
<br clear=3D"none">

</font>
<div id=3D"yiv2789538471gmail-m_-237604625577226252yiv3426673979">

<div>

<div dir=3D"ltr">The whole propeller thing is really overstated.&nbsp; It i=
s just there to keep the pilot cool.&nbsp; If the propeller stops turning, =
the pilot often begins sweating. <br clear=3D"none"></div>

<br clear=3D"none">

<div>

<div id=3D"yiv2789538471gmail-m_-237604625577226252yiv3426673979yqtfd02560"=
>

<div dir=3D"ltr">On Wed, May 19, 2021 at 5:15 AM Jeff Scarbrough &lt;<a rel=
=3D"nofollow noopener noreferrer" shape=3D"rect" ymailto=3D"mailto:fishplat=
e@gmail.com" target=3D"_blank" href=3D"mailto:fishplate@gmail.com";>fishplat=
e@gmail.com</a>&gt; wrote:<br clear=3D"none"></div>

</div>

<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex;">

<div id=3D"yiv2789538471gmail-m_-237604625577226252yiv3426673979yqtfd85478"=
>

<div>Not to mention that there are two magnetos.&nbsp; You don't want your =
lawn mower quitting in mid-air.</div>

<br clear=3D"none">

<div>

<div dir=3D"ltr">On Tue, May 18, 2021, 23:15 Bob Spidell &lt;<a rel=3D"nofo=
llow noopener noreferrer" shape=3D"rect" ymailto=3D"mailto:bspidell@comcast=
.net" target=3D"_blank" href=3D"mailto:bspidell@comcast.net";>bspidell@comca=
st.net</a>&gt; wrote:<br clear=3D"none"></div>

<blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204=
,204,204);padding-left:1ex;">Magnetos still power the vast majority of smal=
l aircraft piston engines; <br clear=3D"none">
they're a bit more complicated though. Mags in good nick will throw a <br c=
lear=3D"none">
really hot spark; they're always 'hot' and the only way to disable them <br=
 clear=3D"none">
is to ground the primary coil by a 'P lead.'<br clear=3D"none">
<br clear=3D"none">
On 5/18/2021 8:03 PM, Thomas Coradeschi wrote:<br clear=3D"none">
&gt; You=E2=80=99re almost certainly looking at a magneto ignition system i=
n all of those small engines=E2=80=A6 Bog simple indeed!<br clear=3D"none">
&gt;<br clear=3D"none">
&gt; =E2=80=94<br clear=3D"none">
&gt; Tom Coradeschi<br clear=3D"none">
&gt; <a rel=3D"nofollow noopener noreferrer" shape=3D"rect" ymailto=3D"mail=
to:tjcora@icloud.com" target=3D"_blank" href=3D"mailto:tjcora@icloud.com";>t=
jcora@icloud.com</a><br clear=3D"none">
&gt;<br clear=3D"none">
&gt;<br clear=3D"none">
&gt;&gt; On 18 May 2021, at 10:53 PM, Bob Spidell &lt;<a rel=3D"nofollow no=
opener noreferrer" shape=3D"rect" ymailto=3D"mailto:bspidell@comcast.net"; t=
arget=3D"_blank" href=3D"mailto:bspidell@comcast.net";>bspidell@comcast.net<=
/a>&gt; wrote:<br clear=3D"none">
&gt;&gt;<br clear=3D"none">
&gt;&gt; re: "... they are using iron mass of the blade as part of the indu=
ctance field to signal the position for coil firing ..."<br clear=3D"none">
&gt;&gt;<br clear=3D"none">
&gt;&gt; That was my guess, based on what they told me; the motor was other=
wise in good shape (how I managed to get it back together still amazes me).=
 IIRC, it was a Tecumseh 5HP engine. The name of the shop was 'Knife Stalke=
rs.'<br clear=3D"none">
&gt;&gt;<br clear=3D"none">
&gt;&gt; I'm looking into possibly rebuilding a couple chainsaw motors, the=
 coil and 'points,' or whatever solid state switch they are using, are very=
 simplistic. There may be a magnet in the crank gear to trigger the spark. =
I use Pertronix in several cars and, except for one they have a cap on the =
distributor cam with magnets to fire the electronic switch. Surprising to m=
e, the one on my 4-cyl Austin-Healey doesn't use the cap, apparently the lo=
bes on the distributor cam are sufficient to fire the Hall Effect sensor.<b=
r clear=3D"none">
&gt;&gt;<br clear=3D"none">
&gt;&gt; bs<br clear=3D"none">
&gt;&gt;<br clear=3D"none">
&gt;&gt; On 5/18/2021 7:38 PM, old dirtbeard wrote:<br clear=3D"none">
&gt;&gt;&gt; Hi Bob,<br clear=3D"none">
&gt;&gt;&gt;<br clear=3D"none">
&gt;&gt;&gt; I believe you, of course, but I have never heard this before.&=
nbsp; I have a Craftsman 21" walk behind and I usually sharpen the blade an=
d do maintenance this month, so I think I will see if the engine will fire =
with the blade removed for sharpening.<br clear=3D"none">
&gt;&gt;&gt;<br clear=3D"none">
&gt;&gt;&gt; For this to make sense to me, there would need to be some sens=
or on the blade, or they are using iron mass of the blade as part of the in=
ductance field to signal the position for coil firing. The aluminum sump of=
 the motor protrudes through the steel deck of the mower, so I suppose it i=
s possible. There is quite an air gap between the blade and the sump of the=
 engine, however.<br clear=3D"none">
&gt;&gt;&gt;<br clear=3D"none">
&gt;&gt;&gt; You have me very curious and I will let you know if the mower =
will fire without the blade attached (if it does, I will not let it run as =
it is hard to predict what would happen without that flywheel attached to t=
he crankshaft).<br clear=3D"none">
&gt;&gt;&gt;<br clear=3D"none">
&gt;&gt;&gt; best,<br clear=3D"none">
&gt;&gt;&gt;<br clear=3D"none">
&gt;&gt;&gt; doug<br clear=3D"none">
&gt;&gt;&gt;<br clear=3D"none">
&gt;&gt;&gt; On Tue, May 18, 2021 at 5:35 PM Bob Spidell &lt;<a rel=3D"nofo=
llow noopener noreferrer" shape=3D"rect" ymailto=3D"mailto:bspidell@comcast=
.net" target=3D"_blank" href=3D"mailto:bspidell@comcast.net";>bspidell@comca=
st.net</a>&gt; wrote:<br clear=3D"none">
&gt;&gt;&gt; Possibly of some interest: I had a Craftsman walk-behind that =
quit running suddenly. I tore the engine down, didn't find anything, then f=
inally took it to a repair shop. They told me the blade had a crack in it t=
hat caused the problem;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;supp=
osedly the blade is part of a timing loop that fires the spark. Sort of mak=
es sense if you think of the blade as a flywheel with a position sensor on =
it.<br clear=3D"none">
&gt;&gt;&gt;<br clear=3D"none">
&gt;&gt;&gt; Bob<br clear=3D"none">
&gt;&gt;&gt;<br clear=3D"none">
&gt;&gt;&gt; On 5/18/2021 2:55 PM, Brian and Wendy Warrick wrote:<br clear=
=3D"none">
&gt;&gt;&gt;&gt; I run Snapper walk behind mowers and have never gave it a =
thought. I can't see why it would matter. If it did, they would have design=
ed the adapter differently.<br clear=3D"none">
&gt;&gt;&gt;&gt;<br clear=3D"none">
&gt;&gt;&gt;&gt; Brian<br clear=3D"none">
&gt;&gt;&gt;&gt; Nampa, ID<br clear=3D"none">
&gt;&gt;&gt;&gt;<br clear=3D"none">
&gt;&gt;&gt;&gt; From: Shop-talk &lt;<a rel=3D"nofollow noopener noreferrer=
" shape=3D"rect" ymailto=3D"mailto:shop-talk-bounces@autox.team.net"; target=
=3D"_blank" href=3D"mailto:shop-talk-bounces@autox.team.net";>shop-talk-boun=
ces@autox.team.net</a>&gt; on behalf of Karl Vacek &lt;<a rel=3D"nofollow n=
oopener noreferrer" shape=3D"rect" ymailto=3D"mailto:stearman809@gmail.com"=
 target=3D"_blank" href=3D"mailto:stearman809@gmail.com";>stearman809@gmail.=
com</a>&gt;<br clear=3D"none">
&gt;&gt;&gt;&gt; Sent: Tuesday, May 18, 2021 3:52 PM<br clear=3D"none">
&gt;&gt;&gt;&gt; To: '<a rel=3D"nofollow noopener noreferrer" shape=3D"rect=
" ymailto=3D"mailto:shop-talk@autox.team.net"; target=3D"_blank" href=3D"mai=
lto:shop-talk@autox.team.net">shop-talk@autox.team.net</a>' &lt;<a rel=3D"n=
ofollow noopener noreferrer" shape=3D"rect" ymailto=3D"mailto:Shop-talk@aut=
ox.team.net" target=3D"_blank" href=3D"mailto:Shop-talk@autox.team.net";>Sho=
p-talk@autox.team.net</a>&gt;<br clear=3D"none">
&gt;&gt;&gt;&gt; Subject: [Shop-talk] Mower blade orientaaion relative to p=
iston<br clear=3D"none">
&gt;&gt;&gt;&gt;&nbsp; &nbsp;<br clear=3D"none">
&gt;&gt;&gt;&gt; Last time I sharpened my 21=E2=80=9D walk-behind mower bla=
de I thought of something that=E2=80=99s never occurred to me, after using =
the same brand of mower for 25 years..<br clear=3D"none">
&gt;&gt;&gt;&gt;&nbsp; &nbsp;<br clear=3D"none">
&gt;&gt;&gt;&gt; On a Snapper, the blade can actually go on any way onto th=
e square adapter keyed to the crankshaft.&nbsp; The mounting point is squar=
e, no pins, no longer side, nothing.<br clear=3D"none">
&gt;&gt;&gt;&gt;&nbsp; &nbsp;<br clear=3D"none">
&gt;&gt;&gt;&gt; One way would be aligned with the cylinder at TDC/BDC, and=
 the other way would be across.&nbsp; It=E2=80=99s been off many times and =
there=E2=80=99s no way to tell how it was mounted originally.&nbsp; The man=
ual is silent on this.<br clear=3D"none">
&gt;&gt;&gt;&gt;&nbsp; &nbsp;<br clear=3D"none">
&gt;&gt;&gt;&gt; Power stroke shouldn=E2=80=99t matter, but maybe some dyna=
mic issue one way or the other?<br clear=3D"none">
&gt;&gt;&gt;&gt;&nbsp; &nbsp;<br clear=3D"none">
&gt;&gt;&gt;&gt; Thanks!<br clear=3D"none">
&gt;&gt;&gt;&gt; Karl<br clear=3D"none">
&gt;&gt;&gt;&gt;<br clear=3D"none">
&gt;&gt;&gt; _______________________________________________<br clear=3D"no=
ne">
&gt;&gt;&gt;<br clear=3D"none">
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<br clear=3D"none">
_______________________________________________<br clear=3D"none">
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target=3D"_blank" href=3D"http://autox.team.net/mailman/options/shop-talk/f=
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te@gmail.com</a><br clear=3D"none">
<br clear=3D"none">
</blockquote></div>


_______________________________________________<br clear=3D"none">
<br clear=3D"none">
<a rel=3D"nofollow noopener noreferrer" shape=3D"rect" ymailto=3D"mailto:Sh=
op-talk@autox.team.net" target=3D"_blank" href=3D"mailto:Shop-talk@autox.te=
am.net">Shop-talk@autox.team.net</a><br clear=3D"none">
lank" href=3D"http://www.team.net/donate.html";>http://www.team.net/donate.h=
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Archive: <a rel=3D"nofollow noopener noreferrer" shape=3D"rect" target=3D"_=
blank" href=3D"http://www.team.net/pipermail/shop-talk";>http://www.team.net=
/pipermail/shop-talk</a> <a rel=3D"nofollow noopener noreferrer" shape=3D"r=
ect" target=3D"_blank" href=3D"http://autox.team.net/archive";>http://autox.=
team.net/archive</a><br clear=3D"none">
<br clear=3D"none">

<a rel=3D"nofollow noopener noreferrer" shape=3D"rect" target=3D"_blank" hr=
ef=3D"http://autox.team.net/mailman/options/shop-talk/jdinnis@gmail.com";>ht=
tp://autox.team.net/mailman/options/shop-talk/jdinnis@gmail.com</a><br clea=
r=3D"none">
<br clear=3D"none">
</blockquote></div>

<br clear=3D"all"><br clear=3D"none">-- <br clear=3D"none">

<div dir=3D"ltr">=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D<br clear=3D"none">=3D Never offe=
nd people with style when you&nbsp;&nbsp; =3D<br clear=3D"none">=3D can off=
end with substance --- Sam Brown&nbsp; =3D

<div id=3D"yiv2789538471gmail-m_-237604625577226252yiv3426673979yqtfd85992"=
><br clear=3D"none">=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</div>

</div>



<div id=3D"yiv2789538471gmail-m_-237604625577226252yiv3426673979yqtfd90930"=
>
</div>

</div>

</div>



<div id=3D"yiv2789538471gmail-m_-237604625577226252yqtfd27441">____________=
___________________________________<br clear=3D"none"><br clear=3D"none"><a=
 rel=3D"nofollow noopener noreferrer" shape=3D"rect" ymailto=3D"mailto:Shop=
-talk@autox.team.net" target=3D"_blank" href=3D"mailto:Shop-talk@autox.team=
.net">Shop-talk@autox.team.net</a><br clear=3D"none">Donate: <a rel=3D"nofo=
llow noopener noreferrer" shape=3D"rect" target=3D"_blank" href=3D"http://w=
ww.team.net/donate.html">http://www.team.net/donate.html</a><br clear=3D"no=
ne">Suggested annual donation&nbsp; $12.96<br clear=3D"none">Archive: <a re=
l=3D"nofollow noopener noreferrer" shape=3D"rect" target=3D"_blank" href=3D=
"http://www.team.net/pipermail/shop-talk";>http://www.team.net/pipermail/sho=
p-talk </a><a rel=3D"nofollow noopener noreferrer" shape=3D"rect" target=3D=
"_blank" href=3D"http://autox.team.net/archive";>http://autox.team.net/archi=
ve</a><br clear=3D"none"><br clear=3D"none">Unsubscribe/Manage: <a rel=3D"n=
ofollow noopener noreferrer" shape=3D"rect" target=3D"_blank" href=3D"http:=
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.team.net/mailman/options/shop-talk/dave1massey@cs.com</a><br clear=3D"none=
"><br clear=3D"none"></div>

</div>

</div>

</blockquote></div>
</div>
<br clear=3D"all"><br clear=3D"none">-- <br clear=3D"none">
<div class=3D"yiv2789538471gmail_signature" dir=3D"ltr">=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D<br clear=3D"none">=3D Never offend people with style when you&nbsp;&=
nbsp; =3D<br clear=3D"none">=3D can offend with substance --- Sam Brown&nbs=
p; =3D<br clear=3D"none">=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D</div>

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</div>
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