Re: ABS brakes?

>DOT5 does not absorb water, the water puddles. At the bottom. In your
>calipers. Where it boils. And corrodes.

So says David Kelly.

Well, Dave, if you're referring to a '50 Chevy, you are totally correct.
It had a vented master cylinder. As the brake linings wore down, the wheel
cylinder pistons moved farther out in their bores and the fluid level
dropped. The vent allowed air to replace the fluid as it migrated to the
wheel cylinders.

Today's motorcycles are unvented with respect to the fluid. The master
cylinder has a flexible rubber membrane which isolates the atmosphere from
the fluid itself. The cap has a vent but air can only impinge upon the
rubber membrane which lowers as the fluid level lowers. Thus, the moisture
carried in the air never touches the fluid itself and water pooling is
virtually impossible. About the only way water can enter the brake system
is by pouring it in the reservoir.

Here's a tip: If you suffer a total loss of fluid due to a leak and you
have no source of brake fluid, repair the leak and emergency fill the
reservoir with any liquid at hand: Coke, water, beer, motor oil, i.e., any
liquid media. This was actually done on a Russian airliner a few years ago
to replenish the hydraulic system and it (soda pop) worked good enough to
get the craft to its destination safely! Of course it worked because any
liquid is incompressible.

>DOT5 brake fluid is more compressible than non-silicone.
DOT5 is a liquid, therefore it is incompressible. That is my opinion and
likely the opinion of Mr. Bendix as well.

.

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