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If you increase the diameter of your rear cylinders, you increase the amount of fluid required to move the shoes the same distance, so your master cylinder must travel further, more pedal travel, and would probably make the problem worse. Increase the size
of your master cylinder and reduce pedal travel and probably the pressure in the system given the same pedal force application. I like minimal pedal travel, and like feeling like pressing against the wall to get the vehicle to stop. </div>
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Sincerely</div>
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Henry Morrison</div>
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<p>Sent from <a href="http://aka.ms/weboutlook">Outlook</a><br>
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<div id="divRplyFwdMsg" dir="ltr"><font color="#000000" face="Calibri, sans-serif" style="font-size:11pt"><b>From:</b> Healeys <healeys-bounces@autox.team.net> on behalf of Chris Dimmock <austin.healey@gmail.com><br>
<b>Sent:</b> Wednesday, August 28, 2019 5:23 AM<br>
<b>To:</b> Michael Salter <michaelsalter@gmail.com><br>
<b>Cc:</b> healeys@autox.team.net <healeys@autox.team.net><br>
<b>Subject:</b> Re: [Healeys] Rear wheel cylinders on a BJ8</font>
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<div>Seriously, </div>
<div id="x_AppleMailSignature">So all you men who have fitted rear disc brakes to your Healey, have only ever done this in order to "reduce" your rear braking effort?</div>
<div id="x_AppleMailSignature">To make your rear brakes "less efficient" than they already are?</div>
<div id="x_AppleMailSignature">And you've fitted Discs to "increase" your unsprung weight, and upset the balance of your car?</div>
<div id="x_AppleMailSignature">Seriously?</div>
<div id="x_AppleMailSignature">Sincerely, this group used to share ideas. </div>
<div id="x_AppleMailSignature">Now, instead of people saying "nah, tried that, but I locked rear wheels" it's a bunch of hypothetical Wikipedia answers. </div>
<div id="x_AppleMailSignature">So I will ask again. </div>
<div id="x_AppleMailSignature">Has anyone else changed their rear wheel cylinders on a 3000 from 3/4 inch to 7/8 inch?</div>
<div id="x_AppleMailSignature">If yes - I'd love to hear your feedback. </div>
<div id="x_AppleMailSignature">If you've fitted disk brakes on your Jensen Healey, or what ever - I'm not interested in your comments. Im not interested in the theory - I'm interested in the practice and real results from on the road. </div>
<div id="x_AppleMailSignature">Too much bullshit internet "searching" is infiltrating this list. I've always only answered when I've actually done something. </div>
<div id="x_AppleMailSignature">Armchair experts who google answers and Have now experience in the question I've asked need to pull their head in - that's you Kees. </div>
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<font color="#000000"><span style="background-color:rgba(255,255,255,0)">Has anyone else ever changed their rear wheel cylinders from 3/4 inch to 7/8 inch?</span></font></blockquote>
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If you have? I'd love to hear from you. </div>
<div id="x_AppleMailSignature">If you haven't, well, I don't really care!</div>
<div id="x_AppleMailSignature">Yes. I'm pissed off. </div>
<div id="x_AppleMailSignature">People who have the answer - from experience- don't answer when 4 others respond. <br>
I'm just pissed off </div>
<div id="x_AppleMailSignature">A lot going on. </div>
<div id="x_AppleMailSignature">Chris</div>
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On 28 Aug 2019, at 2:29 am, Michael Salter <<a href="mailto:michaelsalter@gmail.com">michaelsalter@gmail.com</a>> wrote:<br>
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Have to agree with Kees on this one. <br>
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We have a brake bias control on AHX12 and I can certainly attest to the fact that when the conditions change to "wet" removing a lot of rear braking is absolutely essential to prevent the car from swapping ends.
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As most road cars don't have adjustable brake bias I would be very careful in trying to increase the rear braking.</div>
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When braking into a corner the last thing you want is the rear end coming around, particularly in the wet.</div>
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<div class="x_gmail_attr" dir="ltr">On Tue, Aug 27, 2019 at 12:09 PM Kees Oudesluijs <<a href="mailto:coudesluijs@chello.nl">coudesluijs@chello.nl</a>> wrote:<br>
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Whatch out driving in the rain as the rear brakes will lock the rear <br>
wheels much quicker than with the smaller pistons.Rear brakes are only <br>
providing a small portion of the total brake force.<br>
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Kees Oudesluijs<br>
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Op 27-8-2019 om 18:04 schreef Chris Dimmock:<br>
> Hi Men<br>
> <br>
> I just did. Sick of the rear brakes doing nothing. Freeloaders!!<br>
> Yes, no problem with seized wheel cylinders, no problem with the flexible hose - just bugger all wear on the rear linings.<br>
> I'll let you know how it goes on my BJ8<br>
> Best<br>
> Chris<br>
><br>
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