He changed the name to RC Fab about a year ago, but when I last talked with him they were changing the name again. Check RC Fab in Albuquerque, NM
> I can't find the link to Jeff randles new rack company? > > Can someone help me out > > Thx > Jay > Peltz power. > > Sent from my iPhone > >> On Jan 10, 2017, at 8:31 PM, Ray Walters <[email protected]> wrote: >> >> Hi William; >> >> Your link had a glitch, I think this should be it? >> http://www.millersolar.com/MillerSolar/case_studies/Wind_damage/_wind_damage.html >> >> We have DP&W's high wind option which bumped the pole size from 4" to 6" >> along with heavier hardware throughout. I haven't been to the site yet, >> but the techs were reporting just the module failed and the rack is >> still good. I'm going up next week and I'll try to figure this out. >> This site also has a funnel effect as you mentioned. Higher ridges to >> the North and South, and this smaller peak between with our rack almost >> right at the top. >> Roof mounts actually do seem to be much better; the wind doesn't get >> behind it, and if the array is set back from the edge, the side edge of >> the array isn't getting pummeled. >> Our failure occurred with an angled wind, not perpendicular. Your rack >> failures look also to have had uneven loading: the way it twisted that >> top rail off. I almost wonder if these racks aren't hitting some >> resonance that's causing the rack to twist and torque back and forth >> repeatedly. You can grab the corner of the array and "pluck" it, then >> watch it bounce back and forth: that's the simple way to determine its >> harmonic resonance. >> >> R.Ray Walters >> CTO, Solarray, Inc >> Nabcep Certified PV Installer, >> Licensed Master Electrician >> Solar Design Engineer >> 303 505-8760 >> >>> On 1/10/2017 6:26 PM, William Miller wrote: >>> Ray: >>> >>> I can't say I have a solution to your problem, but I can share some >>> photos >>> of two similar failures in case you can glean any information from >>> them. >>> See: >>> http://www.millersolar.com/MillerSolar/case_studies/Wind_damage/_wind_dama >>> ge.html >>> >>> The first failure is a Zomeworks. On the same exact spot we tried a >>> DPW >>> TOP. Neither could withstand a funnel effect provided by the >>> topography. >>> >>> At the same location we installed a roof mount as well that has never >>> failed (to my knowledge, we don't service that customer anymore). >>> >>> I think if you have terrain that is tilted in the correct direction a >>> mount that hugs the ground is best. That is a lay opinion, however. >>> >>> William >>> >>> >>> >>> Lic 773985 >>> millersolar.com >>> 805-438-5600 >>> >>> -----Original Message----- >>> From: RE-wrenches [mailto:[email protected]] On >>> Behalf Of Ray Walters >>> Sent: Tuesday, January 10, 2017 2:31 PM >>> To: RE-wrenches <[email protected]> >>> Subject: [RE-wrenches] Solar World Wind Damage >>> >>> Greetings All; >>> >>> I just had the dreaded call from one of my higher profile commercial >>> clients: a remote radio repeater station had modules ripped off the >>> frame >>> by high winds. >>> Two SW285s were damaged. The wind was strong enough to rip right >>> through >>> the aluminum side rails. We had used the proper stainless 1/4" >>> bolt hardware with washers on the inside, etc. All the hardware was >>> still >>> tight, it just tore the aluminum past the washers. This is not a top >>> down >>> clamp system, but uses bolts through the mounting holes on the back of >>> the >>> module. This was all on a DP&W rack with high wind option. >>> In 20 years in business, I've never seen that happen. Is there a >>> contact >>> at Solar World? I'm not getting through on the tech support line I >>> have. >>> First, I need to know what the wind rating is on the modules blowing >>> from >>> the back side, and Second, a suggested fix for the remaining modules. >>> One module was completely ripped from the frame and thrown 30 yds >>> (total >>> destruction), a 2nd one has cracks in the Aluminum, but has not let go >>> yet. I was thinking of adding some angle aluminum on the inside to >>> beef >>> it up. IMHO, the frames are pretty thin aluminum compared to older >>> modules. I'll share some pics when available. >>> >>> As always thanks in advance for your comments, >>> >>> -- >>> R.Ray Walters >>> CTO, Solarray, Inc >>> Nabcep Certified PV Installer, >>> Licensed Master Electrician >>> Solar Design Engineer >>> 303 505-8760 >>> >>> _______________________________________________ >>> List sponsored by Redwood Alliance >>> >>> List Address: [email protected] >>> >>> Change listserver email address & settings: >>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>> >>> List-Archive: >>> http://www.mail-archive.com/[email protected]/maillist.htm >>> l >>> >>> List rules & etiquette: >>> www.re-wrenches.org/etiquette.htm >>> >>> Check out or update participant bios: >>> www.members.re-wrenches.org >>> _______________________________________________ >>> List sponsored by Redwood Alliance >>> >>> List Address: [email protected] >>> >>> Change listserver email address & settings: >>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>> >>> List-Archive: >>> http://www.mail-archive.com/[email protected]/maillist.html >>> >>> List rules & etiquette: >>> www.re-wrenches.org/etiquette.htm >>> >>> Check out or update participant bios: >>> www.members.re-wrenches.org >>> >>> >> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> List Address: [email protected] >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> List-Archive: >> http://www.mail-archive.com/[email protected]/maillist.html >> >> List rules & etiquette: >> www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> www.members.re-wrenches.org >> > _______________________________________________ > List sponsored by Redwood Alliance > > List Address: [email protected] > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://www.mail-archive.com/[email protected]/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org > > _______________________________________________ List sponsored by Redwood Alliance List Address: [email protected] Change listserver email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://www.mail-archive.com/[email protected]/maillist.html List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out or update participant bios: www.members.re-wrenches.org
