For use with Mil Spec 5606 fluid (the red petroleum based fluid that is
standard for small aircraft in the US), the O-rings and seals are normally
Buna-N rubber. If the Cleveland brake parts have been modified by Tost to
use DOT brake fluid, they do this by changing the O-rings and seals to EPDM
rubber to make them compatible with automotive DOT brake fluid. Stemme uses
such modified Cleveland calipers and DOT fluid in the S10-VT. Schleicher
uses unmodified Cleveland calipers and 5605 fluid in the ASH26E (and I
assume all their current gliders).

While automotive DOT fluids have advantages for high temperature braking
applications, the fluid attacks many paints, is hygroscopic, and thus will
sometimes promote corrosion in brake systems not specifically designed for
it (i.e. early Cleveland calipers and pucks with bare aluminum, as opposed
to anodized, will often corrode and cause fluid leakage at the seals. Some
automotive restorers will line the caliper bore with brass sleeves and
anodize the pucks to restore these corroded brake components.

For glider and small aircraft brakes, I prefer 5605 fluid.

bumper
zz
Minden NV
Quiet Vents and MKII high tech yaw strings






"Tim Mara" wrote in message
...
after reading many of the responses to your message, typically never 100%
correct, what most don't realize is that most of the TOST Hydraulic brake
systems are, and most of the system parts used by the glider manufacturers
supplied to them by TOST are in fact......"Cleveland" Brake parts.....only
with some modifications by TOST, usually to change the fluid type to(DOT 4
brake fluid rather tan Hydraulic fluid)...What TOST has done has assemble
the brakes along with the brake components to make up the kit that is used
on gliders.
see my website page for some available kits on
http://www.wingsandwheels.com/page32.htm
tim

Please visit the Wings & Wheels website at www.wingsandwheels.com


"Paul Hanson" wrote in
message ...
A Happy New Year to All! I am thinking about getting
a hydraulic disc conversion wheel/brake for my SZD-59.
I have not heard anything bad about Cleveland setups,
and have not anything bad the Tost equivalents either.
Both setups can/have been done. Both being about the
same price (read expensive), and both the same amount
of work to install, naturally I want the better of
the two. I hope this is not a religious war subject,
I just want to hear more opinions and I know there
are a few of those here...

Paul Hanson
"Do the usual, unusually well"--Len Niemi