[Diy_efi] (off topic) Disk pad wear reduction with hydraulic reverse valve ?

[Adam Wade]

--- Mike <erazmus at iinet.net.au> wrote:

> I'm wondering if there is some valve arangement that
> would only draw back enough to give say 0.5mm pad-
> disc clearance

You were just reminded that that woudl result in a
ridiculously long pedal travel, along with an
inconsistent travel and feel.  All of that is very bad
in braking.

If you have 4-wheel discs, that's a total of 4mm of
clearance.  If you figure a 4:1 ratio between master
cylinder and piston (for two-piston calipers, not that
far off), that's 4mm of extra travel in the pushrod...
 At a 6:1 lever ratio for the pedal (straight manual
brakes, no power assist), that's an extra INCH of
pedal travel.  Definitely quite noticeable.


> ...add something to *ensure* disc-pad drag is at a
> minimum during that long trip,

If it ain't broke...  What do you hope to gain?


=====
| Adam Wade                       1990 Kwak Zephyr 550 (Daphne) |
|   http://y42.photos.yahoo.com/bc/espresso_doppio/lst?.dir=/   |
| "It was like an emergency ward after a great catastrophe; it  |
|   didn't matter what race or class the victims belonged to.   |
|  They were all given the same miracle drug, which was coffee. |
|   The catastrophe in this case, of course, was that the sun   |
|     had come up again."                    -Kurt Vonnegut     |

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