Fixed vs. Tracking for Pumping [RE-wrenches]

[Matt Tritt]

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  Roy,

  I just have to say one more thing before I shut up.

  Wouldn't it make sense for Zomeworks to actually use PRIMER and GOOD
PAINT? One would think so. I would powder coat the suckers if I was making
'em.

  We have several Wattsun AZ 225's up that have experienced 0 problems. One
has had winds exceding 95 MPH on at least 2 occaisions. No damage,
uninterrupted operation. We have also had very minimal problems with the
small tilt and roll versions.

  These are good units, but be sure to order the SS fastener kit!

  Matt T
  ----- Original Message ----- 
  From: "Roy Butler, Four Winds RE" <roy at four-winds-energy.com>
  To: <RE-wrenches at topica.com>
  Sent: Thursday, September 16, 2004 4:26 PM
  Subject: Re: Fixed vs. Tracking for Pumping [RE-wrenches]




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  OK...since everyone else chimed in, here's my $.02 worth!

  We have several Zomeworks trackers and 6 or 7 of the Unirac trackers in
  operation right now and without exception have found that the Zomeworks
  units are NOT appropriate for moderate to high wind areas. We installed
  the high wind kits on the larger racks (UTR F-120 with 8 BP3150 modules)
  and it made no difference, they still flopped around in winds of 10+
  mph. We wound up having to tie them down for the winter which definitely
  defeats their purpose!

  We now oversize the array on fixed pole top or ground mounts....I sleep
  a WHOLE lot better on windy nights, as do my customers!

  FYI....I always had the mismatched and/ or missing hardware problem with
  both the Zomeworks and Unirac units. Our oldest Z-works unit is now 7
  years old and has been painted 3 times, had 2 bearing replacements and 1
  shock absorber replacement. The frames may last 10 years but nothing
  else does!

  -- 
  Roy Butler
  NABCEP Certified Solar PV Installer™
  Four Winds Renewable Energy, LLC
  8902 Route 46
  Arkport, NY 14807
  607-324-9747
  www.four-winds-energy.com
  NYSERDA eligible PV installer for PON 716
  NYSERDA eligible wind installer for PON 792

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