[DML] Re: Low Drag Disc Brakes
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[DML] Re: Low Drag Disc Brakes

Bob - I may be too young and also I never really worked on
american cars, but what kind of difference could there be 
between regular pistons and so called low drag pistons ?

Compared to the force that is needed to reduce the speed 
of the car, the force that a regular (not rusty) piston
needs to move a bit is like nothing.

Also there is no spring that pulls the piston back, instead 
the big O-Ring pulls the piston back for approximately 0.1-0.3mm.

The piston does not really move in the O-ring, instead it 
pushes the O-Ring a bit outside with the piston, which then
pulls the piston back when releasing the pedal.
Moving the piston in the rubber O-Ring only happens to 
compensate the wear of the brake pads.

So from the theory how it works I don't see how the drag 
could be reduced a lot - and I see even less possibilities
to gain a lot from that.

But hey - a new day, a good reason to learn something new :-)
If you have more details, I'd like to know.

Elvis & 6548

> In the early 80s, cars shifted to low drag disc brakes.
> For example, the 82-83 AMC Spirit disc brakes were low friction 
> compared to the 78-79 Pacer disc brake pistons. The parts are 
> interchangable so you can upgrade a Pacer to the low friction 
> What about the D?  Are these low friction disc brakes?
> Are there later model calipers that are low friction.
> Typically, the low friction pistons slightly retract after 
>   This could be a spring in the main piston that creates a  little 
> negative hydraulic pressure to retract the pistons.
> Drum brakes used to do this with springs.
> Bob

To address comments privately to the moderating team, please address:

For more info on the list, tech articles, cars for sale see www.dmcnews.com

To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews 
Yahoo! Groups Links

<*> To visit your group on the web, go to:

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    (Yahoo! ID required)

<*> To change settings via email:

<*> To unsubscribe from this group, send an email to:

<*> Your use of Yahoo! Groups is subject to:

Home Back to the Home of PROJECT VIXEN

Copyright 2006 ProjectVixen.com.  All rights reserved.

Opinions expressed in posts reflect the views of their respective authors.
DMCForum Mailing List Archive  DMCNews Mailing List Archive  DMC-UK Mailing List Archive