On 9/8/2011 1:03 PM, Mark wrote:
If your airbrakes "suck open" after you are going faster than 25 knots
it will not warn you, just FYI...

It would work a tad better if the "spoiler open on tow" worked until
the first "gear up" condition before it reverted to the "spoiler
open / gear not down" mode.

If you install the airbrake switch correctly, the Cambridge 302 will
warn you even before the airbrakes "suck open".

The Cambridge system is designed to work with a switch that detects when
the spoilers are _unlocked_, not after they are extended. It's an
important difference, but it's usually easy to install a switch that
does that. On the gliders I've had, there is at least 0.5" of movement
of the spoiler handle and connecting linkage to unlock the spoilers.

So, it's more accurate to refer to it as "spoiler's unlocked on tow",
instead of "spoilers open on tow".

--
Eric Greenwell - Washington State, USA (change ".netto" to ".us" to
email me)