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Re: [Fot] Bolts and Threads

To: "'Bud R'" <levilevi@comcast.net>, "'fot'" <fot@autox.team.net>
Subject: Re: [Fot] Bolts and Threads
From: <timmmurphh@gmail.com>
Date: Thu, 24 Nov 2016 12:27:58 -0600
Delivered-to: mharc@autox.team.net
Delivered-to: fot@autox.team.net
References: <68A3C9D4-F18A-486E-8FFF-F01A820B3F0C@comcast.net>
Thread-index: AQEG7+PepUQZ/uALRZNnarQYbn9jA6J/IMhw
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You can get those bolts from McMaster Carr on the internet in either
partially threaded or fully threaded.  You will probably have to buy a
couple to get them.  Very fast service!

 

Tim

 

From: Fot [mailto:fot-bounces@autox.team.net] On Behalf Of Bud R
Sent: Thursday, November 24, 2016 10:03 AM
To: fot <fot@autox.team.net>
Subject: [Fot] Bolts and Threads

 

The Collective,

 

I'm working on the Spitfire's traverse leaf swing spring rear suspension and
can't find locally the 7/16"  fine thread (20 tpi) by 3 1/2" bolts that were
holding the vertical link and to the trunnions and to the swing spring
bushings.

 

I can find the right sizes in a coarse thread (12 tpi) grade 8 bolt and
thats my plan. The old ones are grade 5 or in one case a bolt with no slash
marks on top. I don't know what it is.

 

Do these bolts need to be fine thread for any particular reason, e.g. for
safety, torque specs, etc.? Is a grade 8 bolt a good idea where it will be
stressed with all the up and down motion with the vertical link? Too
brittle? Usually I go for grade 8 whenever possible but I've heard there are
instances where it might not be the best solution.

 

An aside for Thanksgiving: 

My son and his wife teaching in Shanghai said the Chinese love to celebrate
American holidays (they know them from American TV and movies) but their
take on Thanksgiving is that you thank people who do nice things for you. So
they got cards from their students thanking them for teaching. Kind of a
different twist but a good one I thought.

 

Happy Thanksgiving to all.

 

Thanks,
Bud Rolofson

 

Extreme Parts Racing (more than just a haircut)

 

71TR6 CC57365 (Good 6)

71 Spitfire MK IV Race Car #3

69 Spitfire MK 3 (back up FE engine/dinghy car)

93 Minnie Winnie Race Support Vehicle 

77 Z-50A Hardly Davidson Honda Mini-Trail Bike (Triumph Pit Bike)

 

 

 

 

 

 

 

 

 

 

 


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link=3D"#0563C1" vlink=3D"#954F72"><div class=3DWordSection1><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>You can get =
those bolts from McMaster Carr on the internet in either partially =
threaded or fully threaded.&nbsp; You will probably have to buy a couple =
to get them.&nbsp; Very fast service!<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p>&nbsp;</=
o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Tim<o:p></o:p=
></span></p><p class=3DMsoNormal><a name=3D"_MailEndCompose"><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'><o:p>&nbsp;</=
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style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/b><span style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> =
Fot [mailto:fot-bounces@autox.team.net] <b>On Behalf Of </b>Bud =
R<br><b>Sent:</b> Thursday, November 24, 2016 10:03 AM<br><b>To:</b> fot =
&lt;fot@autox.team.net&gt;<br><b>Subject:</b> [Fot] Bolts and =
Threads<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p class=3DMsoNormal>The =
Collective,<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><p =
class=3DMsoNormal>I&#8217;m working on the Spitfire&#8217;s traverse =
leaf swing spring rear suspension and can&#8217;t find locally the =
7/16&#8221; &nbsp;fine thread (20 tpi) by 3 1/2&#8221; bolts that were =
holding the vertical link and to the&nbsp;trunnions and to the swing =
spring bushings.<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p class=3DMsoNormal>I =
can find the right sizes in a coarse thread (12 tpi) grade 8 bolt and =
thats my plan. The old ones are grade 5 or in one case a bolt with no =
slash marks on top. I don&#8217;t know what it is.<o:p></o:p></p><div><p =
class=3DMsoNormal>&nbsp;<o:p></o:p></p><div><p class=3DMsoNormal>Do =
these bolts need to be fine thread for any particular reason, e.g. for =
safety, torque specs, etc.? Is a grade 8 bolt a good idea where it will =
be stressed with all the up and down motion with the vertical link? Too =
brittle? Usually I go for grade 8 whenever possible but I&#8217;ve heard =
there are instances where it might not be the best =
solution.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>An aside for =
Thanksgiving:&nbsp;<o:p></o:p></p></div><div><p class=3DMsoNormal>My son =
and his wife teaching in Shanghai said the Chinese love to celebrate =
American holidays (they know them from American TV and movies) but their =
take on Thanksgiving is that you thank people who do nice things for =
you. So they got cards from their students thanking them for teaching. =
Kind of a different twist but a good one I =
thought.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>Happy Thanksgiving to all.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><div><div><div><div><di=
v><div><div><div><div><div><p class=3DMsoNormal><span =
style=3D'font-family:"Helvetica",sans-serif;color:black'>Thanks,<br>Bud =
Rolofson<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-family:"Helvetica",sans-serif;color:black'><o:p>&nbsp;</o:p=
></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-family:"Helvetica",sans-serif;color:black'>Extreme Parts =
Racing&nbsp;(more than just a =
haircut)<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-family:"Helvetica",sans-serif;color:black'><o:p>&nbsp;</o:p=
></span></p></div><div><p class=3DMsoNormal>71TR6 CC57365 (Good =
6)<o:p></o:p></p></div><div><p class=3DMsoNormal><span =
style=3D'font-family:"Helvetica",sans-serif;color:black'>71 Spitfire MK =
IV Race Car #3<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-family:"Helvetica",sans-serif;color:black'>69 Spitfire MK =
3 (back up FE engine/dinghy car)<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-family:"Helvetica",sans-serif;color:black'>93 Minnie =
Winnie Race Support Vehicle&nbsp;<o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-family:"Helvetica",sans-serif;color:black'>77 Z-50A Hardly =
Davidson Honda Mini-Trail Bike (Triumph Pit =
Bike)<o:p></o:p></span></p></div></div><div><p class=3DMsoNormal><span =
style=3D'font-size:9.0pt;font-family:"Helvetica",sans-serif;color:black'>=
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