At 03:53 19 October 2017, wrote:
On Wednesday, October 18, 2017 at 6:30:06 PM UTC-7, Michael
Opitz wrote:
At 20:32 18 October 2017, wrote:
Has anyone ever got a hydraulic Tost disk brake to work WELL
on a
Ventus
2C=
M? I'm convinced I've bled my brakes as well as they can be
bled,
and
STILL=
the braking is very weak. I get some small braking action, but
nowhere
ne=
ar being able to put the glider on its nose, or flat-spot the tire.
I
can
s=
low down for a taxiway turn off, so long as its well ahead, but
not
enough
=
to help on a short runway, or enough for a real emergency
stop. I
suspect
=
the wire cable between the control stick and the cylinder under
the
seat
mu=
st be stretching. I may try a thicker cable (I'm experimental).


I have a Discus-2b with the factory Tost 5" wheel also. We had
real
problems bleeding all of the air out of the line. Biggo at the
factory
even sent me a pdf file with pictures in order to do it correctly
from
the bottom. It was a real bear to get all of the air out. Also,
adjusting the cable/brake handle so that there is no play helps a
lot.
Finally, get a new brake pad even if the old one looks OK. The
new
one will be thicker, so the caliper won't have to squeeze over as
great a distance to apply pressure. All of these items add up.

RO

michael, can you post the pdf? I'm convinced I've done everything
possible
regarding bleeding, but still don't have good braking. So I don't
expect it
will help, but I'm desperate now. thanks.

Email posted to your email address listed on this thread. Also,
we had to unbolt the reservoir / master cylinder from the fuselage
mount and hold it maybe 8" above the floor pan while tapping on
the line in order to get all of the air bubbles to rise up and out.
Hope it helps.
RO