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Date:         Wed, 10 Sep 2014 22:36:54 -0400
Reply-To:     Dennis Haynes <d23haynes57@HOTMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Dennis Haynes <d23haynes57@HOTMAIL.COM>
Subject:      Re: New brakes and pedal question
Comments: To: Harry Hoffman <hhoffman@IP-SOLUTIONS.NET>
In-Reply-To:  <20140909204614.D596537915@pb-smtp0.pobox.com>
Content-Type: text/plain; charset="UTF-8"

As other have noted, the new calipers may have a larger bore which requires more volume and thus more pedal travel. However, the larger bore means more clamping force for a given pressure so while the pedal may travel further you will get more braking force for a given pedal pressure. This will be further enhanced by the larger rotor diameter and the larger brake pad surface. With disc brakes there should almost no piston travel so you should not really sense this difference? Also, thick pads will compress more than old worn thin ones. The pads also need to seat and bead to the rotors before maximum brake action is obtained.

If getting a lot of pedal travel you need to check the rear brakes and maybe bleed the system better. It is also possible that you have a bad master cylinder. There is a rear brake proportioning valve (right side frame near fuel tank) that partly responds to van tilt. They do go bad and a soft pedal can be the result. Testing with a brake pressure test gauge is in order.

Dennis

-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Harry Hoffman Sent: Tuesday, September 9, 2014 4:46 PM To: vanagon@GERRY.VANAGON.COM Subject: New brakes and pedal question

Hi All, So, I've finally got the GoWesty bigger brake kit installed and we christened it with a great camping trip to Salisbury Beach State Park in MA.

One thing I've noticed is that I was expecting the brake pedal to travel less to the floor then it currently was. Thought being new pads less travel.

Is that a reasonable expectation or am I off the mark?

Cheers, Harry


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