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Re: [Roadsters] Brakes Phil Erickson

To: Richard Shepard <sales@rslaserkits.com>
Subject: Re: [Roadsters] Brakes Phil Erickson
From: RWM via Datsun-roadsters <datsun-roadsters@autox.team.net>
Date: Tue, 8 Sep 2015 16:34:57 -0400
Cc: "datsun-roadsters@autox.team.net" <datsun-roadsters@autox.team.net>, philip erickson <fj20spl311@yahoo.com>
Delivered-to: mharc@autox.team.net
Delivered-to: datsun-roadsters@autox.team.net
Organization: R.W. Mann & Company, Inc. || Airline Industry Analysis
References: <59uepno9uyfn1sf00t2epxma.1441735532486@email.android.com> <1972266728.3246163.1441740907522.JavaMail.yahoo@mail.yahoo.com>
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    <font size="+1"><font face="Trebuchet MS">No question the stock
        brakes "work fine"<font face="Trebuchet MS">, </font>but that
        shouldn't be confused with <font face="Trebuchet MS">providing
          driver-<font face="Trebuchet MS">desired front/rear 
b</font></font>alance.
        <font face="Trebuchet MS">Tilton and others have created an
          industry to <font face="Trebuchet MS">try to satisfy the
            quest<font face="Trebuchet MS"> </font>for ideal,
            selectable brake balance. Another fixed method<font
              face="Trebuchet MS"> </font>is to alter the cylinder
            size.<br>
            <br>
            <font face="Trebuchet MS">- <font face="Trebuchet MS">Bob
                Mann, '68 2000 Solex, </font><font face="Trebuchet 
MS">Porterfield
                <font face="Trebuchet MS">R4-S pads, want more rear
                  bias... <br>
                  <br>
                </font> </font><br>
            </font></font></font></font></font><br>
    <div class="moz-cite-prefix">On 9/8/2015 3:35 PM, Richard Shepard
      via Datsun-roadsters wrote:<br>
    </div>
    <blockquote
cite="mid:1972266728.3246163.1441740907522.JavaMail.yahoo@mail.yahoo.com"
      type="cite">
      <div style="color:#000; background-color:#fff;
        font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial,
        Lucida Grande, sans-serif;font-size:16px">
        <div><span></span></div>
        <div>When I took my Roadster to a SCCA track nite at Portland
          the stock bakes sucked big time. But then the speed I was
          pulling with a KA did not help. Changed fronts to a street
          comp pad and did it help. Car now stops were it slowed down
          before.</div>
        <div id="yui_3_16_0_1_1441740286429_4978" dir="ltr">I use     
          KFP gold compound   and find they work on the street just for
          me as well as the track.  Did have to grind down to fit as
          they were too wide.</div>
        <div id="yui_3_16_0_1_1441740286429_5063" dir="ltr">rich</div>
        <div id="yui_3_16_0_1_1441740286429_4593" style="font-family:
          HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida
          Grande, sans-serif; font-size: 16px;">
          <div id="yui_3_16_0_1_1441740286429_4592" style="font-family:
            HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida
            Grande, sans-serif; font-size: 16px;">
            <div id="yui_3_16_0_1_1441740286429_4591" dir="ltr">
              <hr id="yui_3_16_0_1_1441740286429_4597" size="1"> <font
                id="yui_3_16_0_1_1441740286429_4590" size="2"
                face="Arial"> <b><span 
style="font-weight:bold;">From:</span></b>
                Gary Ault via Datsun-roadsters
                <a class="moz-txt-link-rfc2396E" 
href="mailto:datsun-roadsters@autox.team.net";>&lt;datsun-roadsters@autox.team.net&gt;</a><br>
                <b id="yui_3_16_0_1_1441740286429_5065"><span
                    id="yui_3_16_0_1_1441740286429_5064"
                    style="font-weight: bold;">To:</span></b> Paul Kort
                <a class="moz-txt-link-rfc2396E" 
href="mailto:paulsdatsunstuff@gmail.com";>&lt;paulsdatsunstuff@gmail.com&gt;</a> 
<br>
                <b id="yui_3_16_0_1_1441740286429_5067"><span
                    id="yui_3_16_0_1_1441740286429_5066"
                    style="font-weight: bold;">Cc:</span></b>
                <a class="moz-txt-link-rfc2396E" 
href="mailto:datsun-roadsters@autox.team.net";>"datsun-roadsters@autox.team.net"</a>
                <a class="moz-txt-link-rfc2396E" 
href="mailto:datsun-roadsters@autox.team.net";>&lt;datsun-roadsters@autox.team.net&gt;</a>;
 philip erickson
                <a class="moz-txt-link-rfc2396E" 
href="mailto:fj20spl311@yahoo.com";>&lt;fj20spl311@yahoo.com&gt;</a> <br>
                <b><span style="font-weight: bold;">Sent:</span></b>
                Tuesday, September 8, 2015 11:05 AM<br>
                <b><span style="font-weight: bold;">Subject:</span></b>
                Re: [Roadsters] Brakes Phil Erickson<br>
              </font> </div>
            <div class="y_msg_container"
              id="yui_3_16_0_1_1441740286429_4782"><br>
              <div id="yiv3742972722">
                <div id="yui_3_16_0_1_1441740286429_4781">
                  <div id="yui_3_16_0_1_1441740286429_4783">So, there
                    you go.  Thanks, Paul.</div>
                  <div id="yui_3_16_0_1_1441740286429_4786"><br>
                  </div>
                  <div id="yui_3_16_0_1_1441740286429_4780">Gary</div>
                  <div id="yui_3_16_0_1_1441740286429_4785"><br>
                  </div>
                  <div><br>
                  </div>
                  <div><br>
                  </div>
                  <div id="yiv3742972722composer_signature">Sent from my
                    mobile phone.</div>
                  <br>
                  <br>
                  -------- Original message --------<br>
                  From: Paul Kort <a class="moz-txt-link-rfc2396E" 
href="mailto:paulsdatsunstuff@gmail.com";>&lt;paulsdatsunstuff@gmail.com&gt;</a> 
<br>
                  Date: 09/08/2015 6:04 AM (GMT-06:00) <br>
                  To: Gary and Cindy Ault <a class="moz-txt-link-rfc2396E" 
href="mailto:aultgc@att.net";>&lt;aultgc@att.net&gt;</a> <br>
                  Cc: philip erickson <a class="moz-txt-link-rfc2396E" 
href="mailto:fj20spl311@yahoo.com";>&lt;fj20spl311@yahoo.com&gt;</a>,
                  <a class="moz-txt-link-abbreviated" 
href="mailto:datsun-roadsters@autox.team.net";>datsun-roadsters@autox.team.net</a>
 <br>
                  Subject: Re: [Roadsters] Brakes Phil Erickson <br>
                  <br>
                  <div dir="ltr">
                    <div>
                      <div>  I've crewed for three roadsters, two 1600s
                        in SCCA G PROD and one 2000 racing the vintage
                        circuit.  All ran with stock brakes, but with
                        racing pads up front.  They all seemed to stop
                        just fine!<br>
                        <br>
                      </div>
                      Paul<br>
                    </div>
                    Ohio<br>
                  </div>
                  <div class="yiv3742972722gmail_extra"><br>
                    <div class="yiv3742972722gmail_quote">On Tue, Sep 8,
                      2015 at 12:14 AM, Gary and Cindy Ault via
                      Datsun-roadsters <span dir="ltr">&lt;<a
                          moz-do-not-send="true"
                          href="mailto:datsun-roadsters@autox.team.net";
                          target="_blank" rel="nofollow"
                          ymailto="mailto:datsun-roadsters@autox.team.net";><a 
class="moz-txt-link-abbreviated" 
href="mailto:datsun-roadsters@autox.team.net";>datsun-roadsters@autox.team.net</a></a>&gt;</span>
                      wrote:<br>
                      <blockquote class="yiv3742972722gmail_quote"
                        style="margin:0 0 0 .8ex;border-left:1px #ccc
                        solid;padding-left:1ex;">
                        <div>
                          <div
                            
style="color:#000;background-color:#fff;font-family:Courier
                            New, courier, monaco, monospace,
                            sans-serif;font-size:16px;">
                            <div dir="ltr"><span>I have found that stock
                                roadster brakes, properly set up and
                                adjusted, work just fine in non-racing
                                applications.  I have both early (1966)
                                and later (1967-1/2) cars.  I have had
                                the '66 1600 with a U20 motor in it for
                                over 40 years.</span></div>
                            <div dir="ltr"><span><br>
                              </span></div>
                            <div dir="ltr"><span>Gary</span></div>
                            <br>
                            <div style="font-family:Courier New,
                              courier, monaco, monospace,
                              sans-serif;font-size:16px;">
                              <div style="font-family:HelveticaNeue,
                                Helvetica Neue, Helvetica, Arial, Lucida
                                Grande, sans-serif;font-size:16px;">
                                <div dir="ltr">
                                  <hr size="1"> <font size="2"
                                    face="Arial"> <b><span
                                        
style="font-weight:bold;">From:</span></b>
                                    philip erickson via Datsun-roadsters
                                    &lt;<a moz-do-not-send="true"
                                      
href="mailto:datsun-roadsters@autox.team.net";
                                      target="_blank" rel="nofollow"
                                      
ymailto="mailto:datsun-roadsters@autox.team.net";>datsun-roadsters@autox.team.net</a>&gt;<br>
                                    <b><span 
style="font-weight:bold;">To:</span></b>
                                    "<a moz-do-not-send="true"
                                      
href="mailto:datsun-roadsters@autox.team.net";
                                      target="_blank" rel="nofollow"
                                      
ymailto="mailto:datsun-roadsters@autox.team.net";>datsun-roadsters@autox.team.net</a>"
                                    &lt;<a moz-do-not-send="true"
                                      
href="mailto:datsun-roadsters@autox.team.net";
                                      target="_blank" rel="nofollow"
                                      
ymailto="mailto:datsun-roadsters@autox.team.net";>datsun-roadsters@autox.team.net</a>&gt;
                                    <br>
                                    <b><span 
style="font-weight:bold;">Sent:</span></b>
                                    Tuesday, September 1, 2015 10:39 PM<br>
                                    <b><span 
style="font-weight:bold;">Subject:</span></b>
                                    [Roadsters] Brakes Phil Erickson<br>
                                  </font> </div>
                                <div><br>
                                  <div>
                                    <div>
                                      <div
                                        
style="color:#000;background-color:#fff;font-family:verdana,
                                        helvetica,
                                        sans-serif;font-size:16px;">
                                        <div dir="ltr"> I tried to send
                                          this, but from the wrong
                                          email.....so I think it got
                                          cut.</div>
                                        <div dir="ltr"><br>
                                        </div>
                                        <div dir="ltr">It's very
                                          difficult to guess on the
                                          braking response of a wheel
                                          cylinder size change on a disc
                                          / drum set-up.<br>
                                          The response / braking torque
                                          to pressure is Linear with
                                          disc brakes and squared or
                                          even cubed with drum brakes. 
                                          Best to use a proportioning
                                          valve on the rear to limit
                                          braking torque.<br>
                                          A proportioning valve is miss
                                          named as it changes the
                                          pressure response to pedal
                                          travel - which flattens the
                                          torque response of the drum
                                          brake.</div>
                                        <div dir="ltr"><br>
                                        </div>
                                        <div dir="ltr">Phil</div>
                                      </div>
                                    </div>
                                  </div>
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    <pre class="moz-signature" cols="72">-- 
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