Alfa Romeo Forum - View Single Post - Front disc replacement...drilled, slots or std
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Dave Brand
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AO Gold Member
Join Date: Jul 2004
Location: United Kingdom
County: Derbyshire
Posts: 6,480
Originally Posted by johnlear View Post
As I see this;
Good post, John!

Just a couple of comments.

The differentiation between "hard" & "soft" pads is much less marked with modern friction materials. A lot of work has gone into, & continues, in developing pads which have acceptably high friction levels over a very wide temperature range.

Friction level is dependent on rubbing speed; again, modern pads have reduced this effect to almost insignificant levels.

Developing friction materials isn't easy - it's still as much a black art as it is a science!

Originally Posted by Fruity View Post
Finally, the main reason for a more expensive standard pad over a cheaper one is in the single pressing manufacture rather than batch manufacture. A pad formed in an individual pressing tends to be a much more consistent pad which has less performance variation.
How so? Do you mean single-cavity versus multi-cavity dies, are we talking press-cured, open-cured or pack-cured pads? Define "performance variation" in this context.

A big advantage of mass-production methods is rigid process control which helps reduce differences in the products within a batch & from batch to batch compared with manufacturing a series of one-offs.

The plural of "anecdote" is not "data".
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