[Roadsters] Brakes Phil Erickson

[Gary Ault]

So, there you go.  Thanks, Paul.
Gary


Sent from my mobile phone.

-------- Original message --------
From: Paul Kort <paulsdatsunstuff at gmail.com> 
Date: 09/08/2015  6:04 AM  (GMT-06:00) 
To: Gary and Cindy Ault <aultgc at att.net> 
Cc: philip erickson <fj20spl311 at yahoo.com>, datsun-roadsters at autox.team.net 
Subject: Re: [Roadsters] Brakes Phil Erickson 

  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!

Paul
Ohio

On Tue, Sep 8, 2015 at 12:14 AM, Gary and Cindy Ault via Datsun-roadsters <datsun-roadsters at autox.team.net> wrote:
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.
Gary
        From: philip erickson via Datsun-roadsters <datsun-roadsters at autox.team.net>
 To: "datsun-roadsters at autox.team.net" <datsun-roadsters at autox.team.net> 
 Sent: Tuesday, September 1, 2015 10:39 PM
 Subject: [Roadsters] Brakes  Phil Erickson
   
  I tried to send this, but from the wrong email.....so I think it got cut.
It's very difficult to guess on the braking response of a wheel cylinder size change on a disc / drum set-up.
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.
A proportioning valve is 
miss named as it changes the pressure response to pedal travel - which 
flattens the torque response of the drum brake.
Phil
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