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Old January 11th 12, 08:13 PM posted to rec.aviation.soaring
Craig[_2_]
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Posts: 144
Default bleeding Duo Discus brakes

On Jan 11, 9:40*am, Dave Nadler wrote:
IIRC, note not all Duos have the same setup as SH have
tried to improve it a few times now...

On Wednesday, January 11, 2012 11:10:10 AM UTC-5, Morgan wrote:
The caliper is mounted near vertical. I may pull it just to orient it
better and eliminate that variable.


Right, its still got a cavity trapping air in the mounted position.

Be careful with the adjustments.
Things I have seen, which you REALLY want to avoid:

(1) adjustment so that vent in top of master is blocked;
this is supposed to be a normally open system.

(2) adjustment so that the spoiler travel is restricted;
check that the spoilers can come full out (cases some
complaints about Duo spoilers !)

Hoe that helps,
Best Regards, Dave "YO electric"


I have a Nimbus which I assume isn't too different regarding the
brakes. I rebuilt the entire brake system last winter and found that
using the oversize veterinary syringe and pushing fluid from the
bottom works well as long as the caliper is off the gear and oriented
so that the brake line port points straight up. Schemp does use DOT
fluid. I didn't find any severe pitting of the caliper or pistons,
but it's worth looking out for.

Best regards,
Craig