<html><body><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 id="yui_3_16_0_1_1441165079861_2847" dir="ltr"><br></div><div id="yui_3_16_0_1_1441165079861_2848" 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 id="yui_3_16_0_1_1441165079861_2849">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 id="yui_3_16_0_1_1441165079861_2850">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 id="yui_3_16_0_1_1441165079861_2851" dir="ltr"><br></div><div id="yui_3_16_0_1_1441165079861_2852" dir="ltr">Phil</div></div></body></html>