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The only ring gear experience I have was with my old Sunbeam Imp.
We used a couple of map gas torches to heat it red hot, dropped it on the
flywheel. knocked it flush with wood and sledge hammer and then immediate
gave it a cold water bath.
Seems to concur with Mr. Salters reading of the repair manual.
400 C seems way to hot. Over 700 F. While not hot enough to weld or
braise, maybe to hot to reduce hardness.
Ira Erbs
Portland, OR
_______ _______
(______ \____1960 BT7____/ _______)
(_________________________)
On Tue, Jan 20, 2015 at 9:01 AM, Michael Salter <michaelsalter@gmail.com>
wrote:
> I have found the comments on this topic to be very interesting with
> regards to the heating of the ring gear. I am no metallurgist so I tend t=
o
> pay attention to manufacturers instructions regarding the heating of meta=
l
> components very carefully.
> In the BN1 workshop manual instructions are given for shrink fitting new
> brass syncro cones onto the gears. The instructions read:
> *"The heating (of the syncro ring) can best be done by immersion in oil o=
f
> 250 degrees Fahrenheit and then fitting by means of a hand press. After
> shrinking on, the unit should be immediately be quenched in water to
> prevent the heat softening the gear itself.*
> 250 degrees Fahrenheit is the equivalent of 121 degrees Centigrade.
> Well, if we are going to be heating the actual RING GEAR to 2 or 300
> degrees Centigrade should we not perhaps be a tad concerned about heat
> softening the ring gear??
> Just a thought....
>
> Michael S
> BN1 #174
>
> On Mon, Jan 19, 2015 at 8:30 PM, Steve Gerow <steveg@abrazosdata.com>
> wrote:
>
>> Chris =E2=80=93 I=E2=80=99ve had my Weber gas grill will close to 400 de=
grees C.
>>
>>
>>
>> Understand from many videos grilling is big in OZ =E2=80=93 suggest use =
of barbie
>> rather than wife=E2=80=99s stove for heating of ring gear.
>>
>>
>>
>>
>>
>> --
>>
>> *Steve Gerow*
>>
>> Altadena, CA, USA
>>
>> BN6 & Weber S330
>>
>> _______________________________________________
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>>
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>>
>>
>>
>
>
> --
> *If you can't fix it with a hammer, you've got an electrical problem.*
>
>
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--001a113358ca93f25c050d197232
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"font-size:small">The=
only ring gear experience I have was with my old Sunbeam Imp.</div><div cl=
ass=3D"gmail_default" style=3D"font-size:small">=C2=A0We used a couple of m=
ap gas torches to heat it =C2=A0red hot, dropped it on the flywheel. knocke=
d it flush with wood and sledge hammer and then immediate gave it a cold wa=
ter bath.</div><div class=3D"gmail_default" style=3D"font-size:small">Seems=
to concur with Mr. Salters reading of the repair manual.</div><div class=
=3D"gmail_default" style=3D"font-size:small">=C2=A0400 C seems way to hot. =
Over 700 F. While not hot enough to weld or braise, maybe to hot to reduce =
hardness.</div></div><div class=3D"gmail_extra"><br clear=3D"all"><div><div=
class=3D"gmail_signature">Ira Erbs<br>Portland, OR<br>=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 =C2=A0 =C2=A0 =C2=A0 =C2=A0 _______<br>=C2=A0 =C2=A0=C2=
=A0 (______ \____1960 BT7____/ _______)<br>=C2=A0 =C2=A0 =C2=A0 =C2=A0=C2=
=A0 (_________________________)<br></div></div>
<br><div class=3D"gmail_quote">On Tue, Jan 20, 2015 at 9:01 AM, Michael Sal=
ter <span dir=3D"ltr"><<a href=3D"mailto:michaelsalter@gmail.com"; target=
=3D"_blank">michaelsalter@gmail.com</a>></span> wrote:<br><blockquote cl=
ass=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;p=
adding-left:1ex"><div dir=3D"ltr"><div class=3D"gmail_default" style=3D"fon=
t-family:comic sans ms,sans-serif;font-size:small">I have found the comment=
s on this topic to be very interesting with regards to the heating of the r=
ing gear. I am no metallurgist so I tend to pay attention to manufacturers =
instructions regarding the heating of metal components very carefully.<br><=
/div><div class=3D"gmail_default" style=3D"font-family:comic sans ms,sans-s=
erif;font-size:small">In the BN1 workshop manual instructions are given for=
shrink fitting new brass syncro cones onto the gears. The instructions rea=
d: <br><i>"The heating (of the syncro ring) can best be done by immers=
ion in oil of 250 degrees Fahrenheit and then fitting by means of a hand pr=
ess. After shrinking on, the unit should be immediately be quenched in wate=
r to prevent the heat softening the gear itself.</i><br></div><div class=3D=
"gmail_default" style=3D"font-family:comic sans ms,sans-serif;font-size:sma=
ll">250 degrees Fahrenheit is the equivalent of 121 degrees Centigrade. <br=
>Well, if we are going to be heating the actual RING GEAR to 2 or 300 degre=
es Centigrade should we not perhaps be a tad concerned about heat softening=
the ring gear??<br></div><div class=3D"gmail_default" style=3D"font-family=
:comic sans ms,sans-serif;font-size:small">Just a thought....<br></div><div=
class=3D"gmail_default" style=3D"font-family:comic sans ms,sans-serif;font=
-size:small"><br></div><div class=3D"gmail_default" style=3D"font-family:co=
mic sans ms,sans-serif;font-size:small">Michael S<br></div><div class=3D"gm=
ail_default" style=3D"font-family:comic sans ms,sans-serif;font-size:small"=
>BN1 #174<br></div></div><div class=3D"gmail_extra"><br><div class=3D"gmail=
_quote">On Mon, Jan 19, 2015 at 8:30 PM, Steve Gerow <span dir=3D"ltr"><=
<a href=3D"mailto:steveg@abrazosdata.com"; target=3D"_blank">steveg@abrazosd=
ata.com</a>></span> wrote:<br><blockquote class=3D"gmail_quote" style=3D=
"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div link=
=3D"blue" vlink=3D"purple" lang=3D"EN-US"><div><p class=3D"MsoNormal">Chris=
=E2=80=93 I=E2=80=99ve had my Weber gas grill will close to 400 degrees C.=
<u></u><u></u></p><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p><p class=
=3D"MsoNormal">Understand from many videos grilling is big in OZ =E2=80=93 =
suggest use of barbie rather than wife=E2=80=99s stove for heating of ring =
gear.<u></u><u></u></p><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p><p cl=
ass=3D"MsoNormal"><u></u>=C2=A0<u></u></p><p class=3D"MsoNormal">--<u></u><=
u></u></p><p class=3D"MsoNormal"><b><span style=3D"font-size:12.0pt;font-fa=
mily:"Bodoni MT","serif"">Steve Gerow<u></u><u></u></sp=
an></b></p><p class=3D"MsoNormal">Altadena, CA, USA<u></u><u></u></p><p cla=
ss=3D"MsoNormal">BN6 & Weber S330<u></u><u></u></p></div></div><br>____=
___________________________________________<br>
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<br></blockquote></div><span class=3D"HOEnZb"><font color=3D"#888888"><br><=
br clear=3D"all"><br>-- <br><div><div dir=3D"ltr"><div><div dir=3D"ltr"><i>=
<font><span style=3D"color:black">If you can't fix it with a hammer, yo=
u've got an electrical problem.</span></font></i><br><br><div></div><di=
v></div><div></div></div></div></div></div>
</font></span></div>
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