Brake shoe grooves

["Dave & Tracy" <dave-tracy.sherratt@xxxxxxxxxxxx>]

Thanks for the reply, I have seen many types of lining but never one quiet
like that. My first thought was a wear indicator !
Regards
Dave.
----- Original Message -----
From: "Peter Engel" <peter.engel@xxxxxxxxxxx>
To: <mailing-list@xxxxxxxxxxxxxxxx>
Sent: Tuesday, January 13, 2004 11:54 AM
Subject: IML: Brake shoe grooves


> Dave,
>
> I believe that the grooves are there to allow airflow for drum cooling.
> During braking pressure is greatest along the center of the friction
> material since that strip is directly over the metal "spine" of the
> shoe.  An overheated drum will "heat spot" in a circle corresponding to
> that contact area.
>
> Some shoe manufacturers seem to use the groove and some don't.  IIRC
> only one shoe at each wheel (the primary?) is grooved.  And yes, you can
> use non-grooved shoes at all positions.
>
> Pete in PA
>
> From: "Dave & Tracy" <dave-tracy.sherratt@xxxxxxxxxxxx>
> Subject: IML: 59 Imperial brake shoes
> Date: Tue, 13 Jan 2004 09:13:24 -0000
>
> Hi can any one tell me why some brake shoes have a wide  groove running
> = down the middle of the lining ? & can they be used with a standard
> plain = shoe ? ( just got a couple of sets! ) Thanks Dave=20 60 Le Baron
> England.
>
>
>