<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Hi Jeff,<div><br></div><div>I use them all the time and love them.</div><div><br></div><div>however I did see two that while didn't fail where failing.</div><div>The wind direction was due east and west. </div><div>This caused the main pivot bolt to wear excessively and also bending the strongback allowing the rack to rock side to side.</div><div>The customer had to actually install heavy straps to prevent it from rocking.</div><div><br></div><div>jay</div><div><br></div><div>peltz power</div><div><br><div><div>On Feb 3, 2009, at 10:00 PM, Jeff Yago wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div style="font-family:Arial, sans-serif; font-size:10pt;"><div>We have installed lots of pole mounted systems and we stay with what is recommended by the racking manufacturer. </div> <div> </div> <div>I have witnessed several different top of pole solar arrays and solar-powered street lights that had been installed by others that were swaying 2 to 3 FEET at the top, and twisting almost 90 degrees of rotation during brief very gusty winds. Yes, these were tall poles which allowed more twisting and bending than a typical 8 to 10 foot hight pole, but I can guarantee you if these were made of cast iron they would have snapped off in minutes.</div> <div> </div> <div>Its hard to believe just how far steel can twist and bend when supporting a large surface area in high winds without damage. I say you should tell your client to install a nice basketball net on his pole and then you should run as fast as you can and don't look back.</div> <div> </div> <div><br></div></div></blockquote></div></div></body></html>