RE: [CAD_CAM_EDM_DRO] Re: Big servo motors drive recommendations

I remember when I bought my first new digital storage oscilloscope, it was
£15000 in the UK, it was $5400 in the USA.

All UK Tektronix could say in defence of their price was we would have no
warranty if I bought it from the USA, hell I could buy three one at least
ought to last warranty.

Tektronix UK lost the sale.



Dr. Mark Vaughan Ph'D. B.Eng. M0VAU

Managing Director

Vaughan Industries Ltd, reg in UK no 2561068

Water Care Technology Ltd, reg in UK no 4129351

Addr Unit3, Sydney House, Blackwater, Truro, Cornwall, TR4 8HH, UK.
Phone/Fax 44 1872 561288

RSGB DRM111(Cornwall)

_____

From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of David G. LeVine
Sent: 27 May 2007 21:46
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: RE: [CAD_CAM_EDM_DRO] Re: Big servo motors drive recommendations



At 11:32 AM 5/27/2007, you wrote:

>We do tend however to mislead the newcomers who quickly think some DIY
>software and servo drives on a £2000 machine can be near as good as a
>£100,000 machine.
>
>In many cases this is nearly true and we have something commercially viable
>at a fraction of the cost of a commercial machine and in a format we can
>self maintain.

Actually it is probably only half as good, but
buy three and keep one as a spare and it does have advantages.

In olden times when the PC and AT were king, you
could buy a clone for 20% of the price of an IBM,
and the IBM was twice as fast and twice as
reliable. Many places bought 4 clones, ran two
and saved some money until they had a failure,
then they swapped in the spare(s) and had the
defective ones fixed. When the IBM failed, you
were out of business until the repairs were
done. The tradeoffs were not trivial, but the
ability to stay in business was a big factor.

David G. LeVine
Nashua, NH 03060





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