At 10:50 PM 5/09/2011, you wrote:
Instrument and ease of use/accuracy:
When I spoke to the Sales Manager at the DG Factory about the
instruments we were fitting to our DG1000S 4-5 years ago, he
expressed his opinion that the the 57mm items were not as accurate
or as easy to maintain as the equivalent 80mm version made by the
same instrument factory. (Miniaturization in mechanical devices is
not as easy/reliable as it may be in electrical circuitry)
I wasn't in a position to change our order and sure enough, when our
two brand new 57mm Altimeters turned up, one of them was about 10hP
(300ft) out on the subscale. It was fixed up under warranty but one
has to ask the question; was it more susceptible to damage/loss of
calibration during transit where-as perhaps the larger version may
have travelled better?
Of greater concern though, when the chips are down, the bigger
instrument might just be that little bit quicker to locate, read and
its vital information that much easier to process safely. Not
important with the altimeter but perhaps a life saver when it comes
to the ASI. This is particularly so with a club ACFT due to the
higher utilisation by low time pilots where the club should be
providing the safest option...particularly where this is also the
cheaper option.
Kind regards,
Daryl Mackay
_______________________________________________
If you are having trouble seeing and interpreting the small Winter
ASI I suggest you get your eyes checked.
The old PZL ASI for gliders apeeared to be a helicopter ASI. It was a
truly great and well built instrument.
Mike
Borgelt Instruments - manufacturers of quality soaring instruments since 1978
phone Int'l + 61 746 355784
fax Int'l + 61 746 358796
cellphone Int'l + 61 428 355784
email: mborg...@borgeltinstruments.com
website: www.borgeltinstruments.com
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