datsun-roadsters
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Re: [Roadsters] Rear Brake Swap

To: Roy Haslett <hrhaslett@yahoo.com>, Datsun Roadster Listserver <datsun-roadsters@autox.team.net>
Subject: Re: [Roadsters] Rear Brake Swap
From: RWM via Datsun-roadsters <datsun-roadsters@autox.team.net>
Date: Mon, 31 Aug 2015 19:49:49 -0400
Delivered-to: mharc@autox.team.net
Delivered-to: datsun-roadsters@autox.team.net
Organization: R.W. Mann & Company, Inc. || Airline Industry Analysis
References: <55E4E1E6.8070906@RWMann.com> <1775020639.3715183.1441064274534.JavaMail.yahoo@mail.yahoo.com>
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That seems to be the design point.

I wonder what happens if you go to 7/8" or 15/16" cylinders?


On 8/31/2015 7:37 PM, Roy Haslett wrote:
> If I really stand on the brakes I will get the back to lock up, but 
> this is with a close adjustment, and I did not want drag on the rear 
> so I backed it off a bit.  I think that the fronts are still doing 70% 
> + of the stopping.
>
> ------------------------------------------------------------------------
> *From:* RWM <RWM@RWMann.com>
> *To:* Roy Haslett <hrhaslett@yahoo.com>; Datsun Roadster Listserver 
> <datsun-roadsters@autox.team.net>
> *Sent:* Monday, August 31, 2015 4:23 PM
> *Subject:* Re: [Roadsters] Rear Brake Swap
>
> Thanks, Roy.
>
> With the 13/16" cylinders, can you get the rears to lock up before the 
> fronts? Or a rearward brake bias?
>
> - Bob
>
>
>
>
>
> On 8/31/2015 7:13 PM, Roy Haslett wrote:
>> Did not notice any difference, however, the brakes weren't really 
>> functioning very well.  All 13/16 now.
>>
>> ------------------------------------------------------------------------
>> Datsun Roadster Listserver <datsun-roadsters@autox.team.net> 
>> *Sent:* Monday, August 31, 2015 11:41 AM
>> *Subject:* Re: [Roadsters] Rear Brake Swap
>>
>> Roy,
>>
>> I gather you didn't notice the asymmetry until the rebuild?
>>
>> Did you go all 3/4 or all 13/16?
>>
>> Any apparent difference once changed?
>>
>> - Bob
>>
>>
>>
>>
>>
>> On 8/31/2015 2:34 PM, Roy Haslett wrote:
>>> I actually have a 67 1600 and when I went to rebuild my rear 
>>> cylinders I discovered I had a 3/4 on one wheel and a 13/16 on the 
>>> other.  13/16 is stock and now hard to find and expensive, but I 
>>> tend to follow what was originally engineered and designed for the car.
>>>
>>> ------------------------------------------------------------------------
>>> *From:* RWM via Datsun-roadsters <datsun-roadsters@autox.team.net> 
>>> *To:* Datsun Roadster Listserver <datsun-roadsters@autox.team.net> 
>>> *Sent:* Sunday, August 30, 2015 3:14 PM
>>> *Subject:* Re: [Roadsters] Rear Brake Swap
>>>
>>> Any update to this vintage 1999 thread?
>>>
>>> http://www.team.net/html/datsun-roadsters/1999-11/msg00700.html
>>>
>>> Are there functional, plug-and-play substitutions for the late roadster
>>> 3/4" rear wheel cylinders from other period Datsun brake parts?
>>>
>>> Such as rear wheel cylinders from the 1200, B210, 510, 617, 710?
>>>
>>> Did the debate over how to get more braking action at the rear (by 
>>> using
>>> either 11/16 or 13/16 cylinders) ever conclude?
>>>
>>> Thanks.
>>>
>>> - Bob Mann, '68 2000 Solex


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    That seems to be the design point.  <br>
    <br>
    I wonder what happens if you go to 7/8" or 15/16" cylinders?<br>
    <br>
    <br>
    <div class="moz-cite-prefix">On 8/31/2015 7:37 PM, Roy Haslett
      wrote:<br>
    </div>
    <blockquote
cite="mid:1775020639.3715183.1441064274534.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 id="yui_3_16_0_1_1441064017868_3098" dir="ltr">If I really
          stand on the brakes I will get the back to lock up, but this
          is with a close adjustment, and I did not want drag on the
          rear so I backed it off a bit.  I think that the fronts are
          still doing 70% + of the stopping.<br>
        </div>
        <div id="yui_3_16_0_1_1441064017868_3097"><span></span></div>
        <br>
        <div id="yui_3_16_0_1_1441064017868_2958" style="font-family:
          HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida
          Grande, sans-serif; font-size: 16px;">
          <div id="yui_3_16_0_1_1441064017868_2957" style="font-family:
            HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida
            Grande, sans-serif; font-size: 16px;">
            <div id="yui_3_16_0_1_1441064017868_2956" dir="ltr">
              <hr id="yui_3_16_0_1_1441064017868_3096" size="1"> <font
                id="yui_3_16_0_1_1441064017868_2959" size="2"
                face="Arial"> <b><span 
style="font-weight:bold;">From:</span></b>
                RWM <a class="moz-txt-link-rfc2396E" 
href="mailto:RWM@RWMann.com";>&lt;RWM@RWMann.com&gt;</a><br>
                <b><span style="font-weight: bold;">To:</span></b> Roy
                Haslett <a class="moz-txt-link-rfc2396E" 
href="mailto:hrhaslett@yahoo.com";>&lt;hrhaslett@yahoo.com&gt;</a>; Datsun 
Roadster
                Listserver <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_1441064017868_3088"><span
                    id="yui_3_16_0_1_1441064017868_3087"
                    style="font-weight: bold;">Sent:</span></b> Monday,
                August 31, 2015 4:23 PM<br>
                <b><span style="font-weight: bold;">Subject:</span></b>
                Re: [Roadsters] Rear Brake Swap<br>
              </font> </div>
            <div id="yui_3_16_0_1_1441064017868_2960"
              class="y_msg_container"><br>
              <div id="yiv6205076754">
                <div id="yui_3_16_0_1_1441064017868_2961"> Thanks, Roy.<br
                    clear="none">
                  <br clear="none">
                  With the 13/16" cylinders, can you get the rears to
                  lock up before the fronts? Or a rearward brake bias?<br
                    clear="none">
                  <br clear="none">
                  - Bob<br clear="none">
                  <br clear="none">
                  <br clear="none">
                  <br clear="none">
                  <div class="qtdSeparateBR"><br>
                    <br>
                  </div>
                  <div class="yiv6205076754yqt5511988369"
                    id="yiv6205076754yqt13282">
                    <div class="yiv6205076754moz-cite-prefix">On
                      8/31/2015 7:13 PM, Roy Haslett wrote:<br
                        clear="none">
                    </div>
                    <blockquote type="cite">
                      <div
                        
style="color:#000;background-color:#fff;font-family:HelveticaNeue,
                        Helvetica Neue, Helvetica, Arial, Lucida Grande,
                        sans-serif;font-size:16px;">Did not notice any
                        difference, however, the brakes weren't really
                        functioning very well.  All 13/16 now.<br
                          clear="none">
                        <div><span></span></div>
                        <br clear="none">
                        <div style="font-family:HelveticaNeue, Helvetica
                          Neue, Helvetica, Arial, Lucida Grande,
                          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>
                                RWM <a moz-do-not-send="true"
                                  rel="nofollow" shape="rect"
                                  class="yiv6205076754moz-txt-link-rfc2396E"
                                  ymailto="mailto:RWM@RWMann.com";
                                  target="_blank"
                                  
href="mailto:RWM@RWMann.com";>&lt;RWM@RWMann.com&gt;</a><br
                                  clear="none">
                                <b><span 
style="font-weight:bold;">To:</span></b>
                                Roy Haslett <a moz-do-not-send="true"
                                  rel="nofollow" shape="rect"
                                  class="yiv6205076754moz-txt-link-rfc2396E"
                                  ymailto="mailto:hrhaslett@yahoo.com";
                                  target="_blank"
                                  
href="mailto:hrhaslett@yahoo.com";>&lt;hrhaslett@yahoo.com&gt;</a>;
                                Datsun Roadster Listserver <a
                                  moz-do-not-send="true" rel="nofollow"
                                  shape="rect"
                                  class="yiv6205076754moz-txt-link-rfc2396E"
ymailto="mailto:datsun-roadsters@autox.team.net"; target="_blank"
                                  
href="mailto:datsun-roadsters@autox.team.net";><a class="moz-txt-link-rfc2396E" 
href="mailto:datsun-roadsters@autox.team.net";>&lt;datsun-roadsters@autox.team.net&gt;</a></a>
                                <br clear="none">
                                <b><span 
style="font-weight:bold;">Sent:</span></b>
                                Monday, August 31, 2015 11:41 AM<br
                                  clear="none">
                                <b><span 
style="font-weight:bold;">Subject:</span></b>
                                Re: [Roadsters] Rear Brake Swap<br
                                  clear="none">
                              </font> </div>
                            <div class="yiv6205076754y_msg_container"><br
                                clear="none">
                              <div id="yiv6205076754">
                                <div> <font size="+1"><font
                                      face="Trebuchet MS">Roy,<br
                                        clear="none">
                                      <br clear="none">
                                      I gather you didn't notice the
                                      asymmetry until the rebuild?<br
                                        clear="none">
                                      <br clear="none">
                                      Did you go all 3/4 or all 13/16?<br
                                        clear="none">
                                      <br clear="none">
                                      Any apparent difference once
                                      changed?<br clear="none">
                                      <br clear="none">
                                      - Bob<br clear="none">
                                    </font></font><br clear="none">
                                  <br clear="none">
                                  <br clear="none">
                                  <div
                                    class="yiv6205076754qtdSeparateBR"><br
                                      clear="none">
                                    <br clear="none">
                                  </div>
                                  <div
                                    class="yiv6205076754yqt1569223162"
                                    id="yiv6205076754yqtfd48443">
                                    <div
                                      class="yiv6205076754moz-cite-prefix">On

                                      8/31/2015 2:34 PM, Roy Haslett
                                      wrote:<br clear="none">
                                    </div>
                                    <blockquote type="cite">
                                      <div
                                        
style="color:#000;background-color:#fff;font-family:HelveticaNeue,
                                        Helvetica Neue, Helvetica,
                                        Arial, Lucida Grande,
                                        sans-serif;font-size:16px;">
                                        <div dir="ltr">I actually have a
                                          67 1600 and when I went to
                                          rebuild my rear cylinders I
                                          discovered I had a 3/4 on one
                                          wheel and a 13/16 on the
                                          other.  13/16 is stock and now
                                          hard to find and expensive,
                                          but I tend to follow what was
                                          originally engineered and
                                          designed for the car.<br
                                            clear="none">
                                        </div>
                                        <br clear="none">
                                        <div
                                          style="font-family:HelveticaNeue,
                                          Helvetica Neue, Helvetica,
                                          Arial, Lucida Grande,
                                          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> RWM via Datsun-roadsters <a
                                                  moz-do-not-send="true"
                                                  rel="nofollow"
                                                  shape="rect"
                                                  
class="yiv6205076754moz-txt-link-rfc2396E"
ymailto="mailto:datsun-roadsters@autox.team.net"; target="_blank"
                                                  
href="mailto:datsun-roadsters@autox.team.net";><a class="moz-txt-link-rfc2396E" 
href="mailto:datsun-roadsters@autox.team.net";>&lt;datsun-roadsters@autox.team.net&gt;</a></a><br
                                                  clear="none">
                                                <b><span
                                                    
style="font-weight:bold;">To:</span></b>
                                                Datsun Roadster
                                                Listserver <a
                                                  moz-do-not-send="true"
                                                  rel="nofollow"
                                                  shape="rect"
                                                  
class="yiv6205076754moz-txt-link-rfc2396E"
ymailto="mailto:datsun-roadsters@autox.team.net"; target="_blank"
                                                  
href="mailto:datsun-roadsters@autox.team.net";><a class="moz-txt-link-rfc2396E" 
href="mailto:datsun-roadsters@autox.team.net";>&lt;datsun-roadsters@autox.team.net&gt;</a></a>
                                                <br clear="none">
                                                <b><span
                                                    
style="font-weight:bold;">Sent:</span></b>
                                                Sunday, August 30, 2015
                                                3:14 PM<br clear="none">
                                                <b><span
                                                    
style="font-weight:bold;">Subject:</span></b>
                                                Re: [Roadsters] Rear
                                                Brake Swap<br
                                                  clear="none">
                                              </font> </div>
                                            <div
                                              
class="yiv6205076754y_msg_container"><br
                                                clear="none">
                                              Any update to this vintage
                                              1999 thread?<br
                                                clear="none">
                                              <br clear="none">
                                              <a moz-do-not-send="true"
                                                rel="nofollow"
                                                shape="rect"
                                                target="_blank"
                                                
href="http://www.team.net/html/datsun-roadsters/1999-11/msg00700.html";>http://www.team.net/html/datsun-roadsters/1999-11/msg00700.html</a><br
                                                clear="none">
                                              <br clear="none">
                                              Are there functional,
                                              plug-and-play
                                              substitutions for the late
                                              roadster <br clear="none">
                                              3/4" rear wheel cylinders
                                              from other period Datsun
                                              brake parts?<br
                                                clear="none">
                                              <br clear="none">
                                              Such as rear wheel
                                              cylinders from the 1200,
                                              B210, 510, 617, 710?<br
                                                clear="none">
                                              <br clear="none">
                                              Did the debate over how to
                                              get more braking action at
                                              the rear (by using <br
                                                clear="none">
                                              either 11/16 or 13/16
                                              cylinders) ever conclude?<br
                                                clear="none">
                                              <br clear="none">
                                              Thanks.<br clear="none">
                                              <br clear="none">
                                              - Bob Mann, '68 2000 Solex</div>
                                          </div>
                                        </div>
                                      </div>
                                    </blockquote>
                                  </div>
                                </div>
                              </div>
                            </div>
                          </div>
                        </div>
                      </div>
                    </blockquote>
                  </div>
                </div>
              </div>
            </div>
          </div>
        </div>
      </div>
    </blockquote>
    <br>
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