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Re: [Fot] Bolts and Threads

To: fot@autox.team.net
Subject: Re: [Fot] Bolts and Threads
From: Bob Davis <rdavis4@cfl.rr.com>
Date: Thu, 24 Nov 2016 13:23:42 -0500
Delivered-to: mharc@autox.team.net
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Go to Aircraft Spruce and Specialty. They will have what you need in 
aircraft grade fine thread. They stock nearly everything and ship fast. 
I have outfitted all my race cars over the years with hardware from them.

On 11/24/16 11:03 AM, Bud R wrote:
> 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)
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> _______________________________________________
> fot@autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
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    <font size="-1">Go to Aircraft Spruce and Specialty. They will have
      what you need in aircraft grade fine thread. They stock nearly
      everything and ship fast. I have outfitted all my race cars over
      the years with hardware from them.</font><br>
    <br>
    <div class="moz-cite-prefix">On 11/24/16 11:03 AM, Bud R wrote:<br>
    </div>
    <blockquote
      cite="mid:68A3C9D4-F18A-486E-8FFF-F01A820B3F0C@comcast.net"
      type="cite">
      <meta http-equiv="Content-Type" content="text/html;
        charset=windows-1252">
      <div>The Collective,</div>
      <div><br>
      </div>
      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.
      <div><br>
      </div>
      <div>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.<br>
        <div> 
          <div>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.</div>
          <div><br>
          </div>
          <div>An aside for Thanksgiving: </div>
          <div>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.</div>
          <div><br>
          </div>
          <div>Happy Thanksgiving to all.</div>
          <div><br>
          </div>
          <div>
            <div apple-content-edited="true">
              <span class="Apple-style-span" style="border-collapse:
                separate; border-spacing: 0px;">
                <div style="word-wrap: break-word; -webkit-nbsp-mode:
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                    class="Apple-style-span" style="orphans: 2;
                    text-align: -webkit-auto; text-indent: 0px; widows:
                    2; -webkit-text-decorations-in-effect: none;">
                    <div style="word-wrap: break-word;
                      -webkit-nbsp-mode: space; -webkit-line-break:
                      after-white-space;"><span class="Apple-style-span"
                        style="orphans: 2; text-align: -webkit-auto;
                        text-indent: 0px; widows: 2;
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                        <div style="word-wrap: break-word;
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                            class="Apple-style-span" style="orphans: 2;
                            text-align: -webkit-auto; text-indent: 0px;
                            widows: 2;
                            -webkit-text-decorations-in-effect: none;">
                            <div style="word-wrap: break-word;
                              -webkit-nbsp-mode: space;
                              -webkit-line-break: after-white-space;"><span
                                class="Apple-style-span" style="orphans:
                                2; text-align: -webkit-auto;
                                text-indent: 0px; widows: 2;
                                -webkit-text-decorations-in-effect:
                                none;">
                                <div style="word-wrap: break-word;
                                  -webkit-nbsp-mode: space;
                                  -webkit-line-break:
                                  after-white-space;"><span
                                    class="Apple-style-span"
                                    style="orphans: 2; text-align:
                                    -webkit-auto; text-indent: 0px;
                                    widows: 2;
                                    -webkit-text-decorations-in-effect:
                                    none;">
                                    <div style="word-wrap: break-word;
                                      -webkit-nbsp-mode: space;
                                      -webkit-line-break:
                                      after-white-space;"><span
                                        class="Apple-style-span"
                                        style="orphans: 2; text-indent:
                                        0px; widows: 2;
                                        -webkit-text-decorations-in-effect:
                                        none;">
                                        <div style="word-wrap:
                                          break-word; -webkit-nbsp-mode:
                                          space; -webkit-line-break:
                                          after-white-space;"><span
                                            class="Apple-style-span"
                                            style="orphans: 2;
                                            text-indent: 0px; widows: 2;
-webkit-text-decorations-in-effect: none;">
                                            <div>
                                              <div
                                                style="border-collapse:
                                                separate; color: rgb(0,
                                                0, 0); font-family:
                                                Helvetica; font-style:
                                                normal; font-variant:
                                                normal; font-weight:
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                                                normal; line-height:
                                                normal; text-transform:
                                                none; white-space:
                                                normal; word-spacing:
                                                0px; border-spacing:
                                                0px;
                                                -webkit-text-stroke-width:
                                                0px;">Thanks,<br
                                                  
class="Apple-interchange-newline">
                                                Bud Rolofson</div>
                                              <div
                                                style="border-collapse:
                                                separate; color: rgb(0,
                                                0, 0); font-family:
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                                                normal; font-variant:
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                                                normal; line-height:
                                                normal; text-transform:
                                                none; white-space:
                                                normal; word-spacing:
                                                0px; border-spacing:
                                                0px;
                                                -webkit-text-stroke-width:
                                                0px;"><br>
                                              </div>
                                              <div
                                                style="border-collapse:
                                                separate; color: rgb(0,
                                                0, 0); font-family:
                                                Helvetica; font-style:
                                                normal; font-variant:
                                                normal; font-weight:
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                                                normal; line-height:
                                                normal; text-transform:
                                                none; white-space:
                                                normal; word-spacing:
                                                0px; border-spacing:
                                                0px;
                                                -webkit-text-stroke-width:
                                                0px;">Extreme Parts
                                                Racing (more than just a
                                                haircut)</div>
                                              <div
                                                style="border-collapse:
                                                separate; color: rgb(0,
                                                0, 0); font-family:
                                                Helvetica; font-style:
                                                normal; font-variant:
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                                                normal; line-height:
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                                                none; white-space:
                                                normal; word-spacing:
                                                0px; border-spacing:
                                                0px;
                                                -webkit-text-stroke-width:
                                                0px;"><br>
                                              </div>
                                              <div>71TR6 CC57365 (Good
                                                6)</div>
                                              <div
                                                style="border-collapse:
                                                separate; color: rgb(0,
                                                0, 0); font-family:
                                                Helvetica; font-style:
                                                normal; font-variant:
                                                normal; font-weight:
                                                normal; letter-spacing:
                                                normal; line-height:
                                                normal; text-transform:
                                                none; white-space:
                                                normal; word-spacing:
                                                0px; border-spacing:
                                                0px;
                                                -webkit-text-stroke-width:
                                                0px;">71 Spitfire MK IV
                                                Race Car #3</div>
                                              <div
                                                style="border-collapse:
                                                separate; color: rgb(0,
                                                0, 0); font-family:
                                                Helvetica; font-style:
                                                normal; font-variant:
                                                normal; font-weight:
                                                normal; letter-spacing:
                                                normal; line-height:
                                                normal; text-transform:
                                                none; white-space:
                                                normal; word-spacing:
                                                0px; border-spacing:
                                                0px;
                                                -webkit-text-stroke-width:
                                                0px;">69 Spitfire MK 3
                                                (back up FE
                                                engine/dinghy car)</div>
                                              <div
                                                style="border-collapse:
                                                separate; color: rgb(0,
                                                0, 0); font-family:
                                                Helvetica; font-style:
                                                normal; font-variant:
                                                normal; font-weight:
                                                normal; letter-spacing:
                                                normal; line-height:
                                                normal; text-transform:
                                                none; white-space:
                                                normal; word-spacing:
                                                0px; border-spacing:
                                                0px;
                                                -webkit-text-stroke-width:
                                                0px;">93 Minnie Winnie
                                                Race Support Vehicle </div>
                                              <div
                                                style="border-collapse:
                                                separate; color: rgb(0,
                                                0, 0); font-family:
                                                Helvetica; font-style:
                                                normal; font-variant:
                                                normal; font-weight:
                                                normal; letter-spacing:
                                                normal; line-height:
                                                normal; text-transform:
                                                none; white-space:
                                                normal; word-spacing:
                                                0px; border-spacing:
                                                0px;
                                                -webkit-text-stroke-width:
                                                0px;">77 Z-50A Hardly
                                                Davidson Honda
                                                Mini-Trail Bike (Triumph
                                                Pit Bike)</div>
                                            </div>
                                            <div style="border-collapse:
                                              separate; color: rgb(0, 0,
                                              0); font-family:
                                              Helvetica; font-size:
                                              12px; font-style: normal;
                                              font-variant: normal;
                                              font-weight: normal;
                                              letter-spacing: normal;
                                              line-height: normal;
                                              text-transform: none;
                                              white-space: normal;
                                              word-spacing: 0px;
                                              border-spacing: 0px;
                                              -webkit-text-stroke-width:
                                              0px;"><br>
                                            </div>
                                            <div style="border-collapse:
                                              separate; color: rgb(0, 0,
                                              0); font-family:
                                              Helvetica; font-size:
                                              12px; font-style: normal;
                                              font-variant: normal;
                                              font-weight: normal;
                                              letter-spacing: normal;
                                              line-height: normal;
                                              text-transform: none;
                                              white-space: normal;
                                              word-spacing: 0px;
                                              border-spacing: 0px;
                                              -webkit-text-stroke-width:
                                              0px;"><br>
                                            </div>
                                          </span><br
                                            class="Apple-interchange-newline">
                                        </div>
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                        </div>
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              <br class="Apple-interchange-newline">
            </div>
            <br>
          </div>
        </div>
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      <pre wrap="">_______________________________________________
<a class="moz-txt-link-abbreviated" 
href="mailto:fot@autox.team.net";>fot@autox.team.net</a>

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href="http://www.fot-racing.com";>http://www.fot-racing.com</a>

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