At 04:16 PM 24/04/06, you wrote:
Before you throw out the vario, try checking the installed system for
leaks, as it is possible that the vario wasn't sealed or the baffles
were damaged during the repair; and it is also possible that the old
tubing used to connect it to the static source may have hardened over
time and will not seal now. If I were you, I would cut an inch off the
static tube and try that.
Disclaimer: I'm an aerospace engineer, not an instrument technician.
John Wharington
A static zero error on the ground won't be caused by leaks in the
instrument or its case. If you have a vario connected to a TE probe
and it reads higher the faster you fly you have a leak on the flask
side of the instrument. If the TE compensation seems inadequate you
have a leak on the probe side or a bad probe.
The Winter varios are balanced in two axes. You need to turn it
upside down to check one axis and then 90 degrees and 270 degrees to
check the other.. Mostly there is some interaction - trim one axis
and you upset the other. I've spent a couple of days balancing these
things. The bearings and shaft are incredibly delicate too. The PZL
was a better vario I think just like the PZL ASI was much nicer than
the Winter. I'm not sure that the price had too many commercial
considerations with the PZL.
With both varios the flows from the flask through the vario are
likely to upset any electronic varios in the system unless extra
precautions are taken during installation.
Mike
Borgelt Instruments - manufacturers of quality soaring instruments
phone Int'l + 61 746 355784
fax Int'l + 61 746 358796
cellphone Int'l + 61 428 355784
Int'l + 61 429 355784
email: [EMAIL PROTECTED]
website: www.borgeltinstruments.com
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