<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div dir="ltr"></div><div dir="ltr">In my experience, trackers have never made sense in off grid residential applications. In general terms, an expensive dual-axis Wattsun tracker offers a ~35% potential increase in daily solar gain around the summer solstice, and only a 10-15% gain in winter, due to seasonal sunpath variation. Any off grid residence has maximum load in winter, not summer - for most folks summer produces an excess, if sized well for winter loads. </div><div dir="ltr"><br></div><div dir="ltr">If you need more solar input, add panels rather than a tracker. With specific exceptions, I would design for winter loads, with a pole top rack for easy (and usually one-person) seasonal adjustment. I also advised clients to set the PT rack tilt angle to latitude from around the 10th of February to the 10th of November, and latitude +15 degrees for the six weeks either side of the winter solstice, December 22. This was instead of adjusting tilt angle on the equinoxes. </div><div dir="ltr"><br></div><div dir="ltr">My installations were in the desert southwest but the principles apply anywhere. </div><div dir="ltr"><br></div><div dir="ltr">Also, my experience with Solar Rackworks has been top tier for decades. Jeff Randall cut his teeth at Zomeworks in solar’s early days, was the engineer who designed Direct Power and Water’s racks, waited out his non-compete after PLP bought DP&W, then started SR with 30 years’ production experience. And he was always willing to modify a design for a specific client or project. </div><div dir="ltr"><br></div><div dir="ltr">Allan Sindelar </div><div dir="ltr">Fully retired, finally</div><div dir="ltr">NABCEP & Journeyman licenses expired</div><div dir="ltr"><br><blockquote type="cite">On Mar 8, 2024, at 3:50 PM, Dave Angelini Offgrid Solar via RE-wrenches <re-wrenches@lists.re-wrenches.org> wrote:<br><br></blockquote></div><blockquote type="cite"><div dir="ltr"><div id="signature">Spendy for the right client, Jeff and Kyle still support/sell the best trackers out there.</div>
<div><a href="https://www.wattsun.com/">https://www.wattsun.com/</a></div><div>
<pre><strong><span style="font-size: small;">Dave Angelini Offgrid Solar
"we go where powerlines don't"
<a href="http://members.sti.net/offgridsolar/" rel="noopener"> </a><a style="color: blue; font-size: 11px; font-family: 'Lucida Grande', Verdana, Arial, Helvetica, sans-serif; font-weight: 400; background-color: #ffffff;" href="https://offgridsolar1.com/" rel="noopener noreferrer"><span style="font-size: 12pt;">https://offgridsolar1.com/</span></a><a href="http://members.sti.net/offgridsolar/" rel="noopener"> </a>
e-mail <a href="mailto:offgridsolar@sti.net">offgridsolar@sti.net</a>
text 209 813 0060</span></strong></pre></div>
<p id="reply-intro">On 2024-03-08 3:27 pm, Dave Tedeyan via RE-wrenches wrote:</p>
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<div>Another one out there that is worth looking at is MT Solar. </div>
<div dir="auto">Cheers,</div>
<div dir="auto">Dave<br><br>
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<div class="v1gmail_attr" dir="ltr">On Fri, Mar 8, 2024, 5:51 PM Kent via RE-wrenches <<a href="mailto:re-wrenches@lists.re-wrenches.org" rel="noreferrer">re-wrenches@lists.re-wrenches.org</a>> wrote:</div>
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<div>Jeremy,<br><br>I think the Solar RacksWorks TPMs are virtually identical to the DPW TPMs. My go to TPM is <a href="https://www.generalspecialtiesmfg.com/" target="_blank" rel="noopener noreferrer">General Specialties</a>; They are a solid design and I think they are easier to assemble. They also have UL listed TPMs but they have top mounting clamps, and for the life of me I don't understand the logic of of a top mount clamp on a TPM.<br><br>Kent Osterberg<br>Blue Mountain Solar</div></blockquote></div></div></div></div></blockquote></div></blockquote><br><blockquote type="cite"><div dir="ltr"><blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0"><div id="replybody1"><div dir="auto"><div dir="auto"><div class="v1gmail_quote" dir="auto"><blockquote class="v1gmail_quote" style="margin: 0 0 0 .8ex; border-left: 1px #ccc solid; padding-left: 1ex;"><div>
<div>On 3/8/2024 2:30 PM, Jeremy Rodriguez via RE-wrenches wrote:</div>
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<pre>With news that PLP has dropped the TPM line, what are you all recommending for a good mount for up to 8 modules , 400 w range.
I looked in the archives, but no luck.
I thought there was someone formerly at DPW that was making them.
Jeremy Rodriguez
Solar Installation / Design
All Solar, Inc.
1453 M St.
Penrose Colorado 81240
Sent by Jeremy's iPhone. Sorry for typos and shorthand.
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