Over Voltage Module - Zenith Aircraft Builders and Flyers2024-03-28T21:25:17Zhttps://zenith.aero/forum/topics/over-voltage-module?commentId=2606393%3AComment%3A612440&feed=yes&xn_auth=noI should have included that o…tag:zenith.aero,2023-09-19:2606393:Comment:9133642023-09-19T00:07:57.299ZScott Ahrenshttps://zenith.aero/profile/ScottAhrens
<p>I should have included that over protection is important for all the glass panels we install in our aircraft; Dynon, Advanced Flight, Garmin, GRT etc. But modern cars are loaded with microchips and screens that would also need protection from a runway alternator. I haven't read of any recalls or complaints about Honda alternators taking out microchips by the hand full.</p>
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<p>I should have included that over protection is important for all the glass panels we install in our aircraft; Dynon, Advanced Flight, Garmin, GRT etc. But modern cars are loaded with microchips and screens that would also need protection from a runway alternator. I haven't read of any recalls or complaints about Honda alternators taking out microchips by the hand full.</p>
<p></p> Most of the alternators sold…tag:zenith.aero,2023-09-18:2606393:Comment:9131902023-09-18T23:32:47.549ZScott Ahrenshttps://zenith.aero/profile/ScottAhrens
<p>Most of the alternators sold today for experimental aircraft are internally regulated and have built-in overvoltage. You can look at B & C Specialty and PlanePower (owned by Hartzell) as two examples. They are expensive $1,000.00 and at least for the PlanePower not terribly reliable. My third PlanePower alternator just failed, all three in 300 hours.</p>
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<p>The alternative is to purchase an older style NipponDenso alternator and connect it to an external regulator. But older…</p>
<p>Most of the alternators sold today for experimental aircraft are internally regulated and have built-in overvoltage. You can look at B & C Specialty and PlanePower (owned by Hartzell) as two examples. They are expensive $1,000.00 and at least for the PlanePower not terribly reliable. My third PlanePower alternator just failed, all three in 300 hours.</p>
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<p>The alternative is to purchase an older style NipponDenso alternator and connect it to an external regulator. But older regulators do not have over voltage protect, so that needs to be installed. That works for a Lycoming but probably not for the Honda / Viking engine.</p>
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<p>The real question is, does the alternator in the Honda engine have overvoltage protection within it?</p>
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<p> </p>
<p></p> Me and Robert go as long way…tag:zenith.aero,2018-02-16:2606393:Comment:6138742018-02-16T01:57:48.230ZJan Eggenfellnerhttps://zenith.aero/profile/JanEggenfellner
<p>Me and Robert go as long way back. Whatever he say's I would go with it. </p>
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<p>Me and Robert go as long way back. Whatever he say's I would go with it. </p>
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<p></p> I don't know because I never…tag:zenith.aero,2018-02-16:2606393:Comment:6138722018-02-16T01:38:03.585ZJan Eggenfellnerhttps://zenith.aero/profile/JanEggenfellner
<p>I don't know because I never had an external one. However, my gut feeling is:</p>
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<p>External:</p>
<ul>
<li>Old style</li>
<li>Mechanical junk</li>
<li>Exposed wire connections</li>
<li>Corrosion issues</li>
<li>Vibration failure prone</li>
</ul>
<p></p>
<p>Internal</p>
<ul>
<li>Just works</li>
<li>Solid state integrated circuitry</li>
<li>Modern</li>
<li>Meets the reliability retirements of a modern Honda </li>
</ul>
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<p>(I take that back, I did work on these in A&P…</p>
<p>I don't know because I never had an external one. However, my gut feeling is:</p>
<p></p>
<p>External:</p>
<ul>
<li>Old style</li>
<li>Mechanical junk</li>
<li>Exposed wire connections</li>
<li>Corrosion issues</li>
<li>Vibration failure prone</li>
</ul>
<p></p>
<p>Internal</p>
<ul>
<li>Just works</li>
<li>Solid state integrated circuitry</li>
<li>Modern</li>
<li>Meets the reliability retirements of a modern Honda </li>
</ul>
<p></p>
<p>(I take that back, I did work on these in A&P school. Easiest way to repair them was to get a Chrysler replacement unit from a local auto parts store. Old technology stuff) </p> Just curious, what difference…tag:zenith.aero,2018-02-15:2606393:Comment:6137142018-02-15T16:28:02.212ZLoren Warnerhttps://zenith.aero/profile/LorenWarner
<p>Just curious, what difference is there between a new internal and external voltage regulator that would make the external more prone to failure? </p>
<p>Just curious, what difference is there between a new internal and external voltage regulator that would make the external more prone to failure? </p> Just to make the point, in ca…tag:zenith.aero,2018-02-14:2606393:Comment:6133042018-02-14T07:11:05.635ZGary Welchhttps://zenith.aero/profile/GaryWelch
<p>Just to make the point, in case some don't know, the difference with the Viking engine is the internally regulated alternator.</p>
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<p>My Lycoming engine has an external voltage regulator that do have occasional failure problems. For this reason, OVP is important for an EarhtX battery if you have an external regulator. </p>
<p>Just to make the point, in case some don't know, the difference with the Viking engine is the internally regulated alternator.</p>
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<p>My Lycoming engine has an external voltage regulator that do have occasional failure problems. For this reason, OVP is important for an EarhtX battery if you have an external regulator. </p> Now, I will tell you what the…tag:zenith.aero,2018-02-13:2606393:Comment:6129732018-02-13T02:00:55.506ZJan Eggenfellnerhttps://zenith.aero/profile/JanEggenfellner
<p>Now, I will tell you what the most likely problems regarding alternator installs are:</p>
<p></p>
<ol>
<li>Broken / partially broken, main alternator lead as it is attached to the alternator. The best remedy for this is to use a section of <a href="https://crimpsupply.com/wire/8-ga-red-welding-cable.html" rel="noopener" target="_blank">dead soft #8 cable</a> with a…</li>
</ol>
<p>Now, I will tell you what the most likely problems regarding alternator installs are:</p>
<p></p>
<ol>
<li>Broken / partially broken, main alternator lead as it is attached to the alternator. The best remedy for this is to use a section of <a href="https://crimpsupply.com/wire/8-ga-red-welding-cable.html" target="_blank" rel="noopener">dead soft #8 cable</a> with a <a href="https://crimpsupply.com/battery-terminals-copper-lugs/copper-lugs/8-ga-1-4-stud-heavy-duty-corrosion-resistant-copper-lugs.html" target="_blank" rel="noopener">heavy duty ring terminal</a> in addition to serious strain relieving of the cable as it leave the alternator terminal. The first support of the cable must be on the alternator itself</li>
<li>See #1 above </li>
</ol> Based on the above comments b…tag:zenith.aero,2018-02-12:2606393:Comment:6129712018-02-12T23:46:54.439ZLoren Warnerhttps://zenith.aero/profile/LorenWarner
<p>Based on the above comments by Jan and Ken, I'm satisfied that EarthX's concern for installing over-voltage protection on our aircraft is unnecessary. One more item removed off our to-do-list. Thanks for all the input.</p>
<p>Based on the above comments by Jan and Ken, I'm satisfied that EarthX's concern for installing over-voltage protection on our aircraft is unnecessary. One more item removed off our to-do-list. Thanks for all the input.</p> This agrees with what Robert…tag:zenith.aero,2018-02-12:2606393:Comment:6128082018-02-12T23:08:24.599ZKen Ryanhttps://zenith.aero/profile/KenRyan
<p>This agrees with what Robert Paisley told me. Robert is a very smart guy, an electrical engineer, and a pioneer in converting Lycoming engines to electronic ignition and fuel injection. Because his engines are electrically dependent, he is fully aware of the need to have a solid electrical system. I asked him once about over voltage protection. Here is his response:</p>
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<p><snip></p>
<p><span>Modern Denso type alternators are not known to have …</span></p>
<p>This agrees with what Robert Paisley told me. Robert is a very smart guy, an electrical engineer, and a pioneer in converting Lycoming engines to electronic ignition and fuel injection. Because his engines are electrically dependent, he is fully aware of the need to have a solid electrical system. I asked him once about over voltage protection. Here is his response:</p>
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<p><snip></p>
<p><span>Modern Denso type alternators are not known to have </span><span class="il">over</span><span> </span><span class="il">voltage</span><span> issues. So we generally do not use </span><span class="il">over</span><span> </span><span class="il">voltage</span><span> protection. </span></p>
<p><span><snip></span></p> Do not install anything in th…tag:zenith.aero,2018-02-12:2606393:Comment:6128032018-02-12T22:24:59.352ZJan Eggenfellnerhttps://zenith.aero/profile/JanEggenfellner
<p>Do not install anything in the alternator circuit of the sophisticated ND alternator brand. </p>
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<p>You can be assured the designers of the internally regulated unit are smarter than you. Because some idiot - I was one for a short time - believed the Chinese copies of the alternator where of the same quality, destroyed the EarthX faith in alternators, is not the same as the Japanese branded units not having the guts already built in to protect you. </p>
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<p>In 30years of…</p>
<p>Do not install anything in the alternator circuit of the sophisticated ND alternator brand. </p>
<p></p>
<p>You can be assured the designers of the internally regulated unit are smarter than you. Because some idiot - I was one for a short time - believed the Chinese copies of the alternator where of the same quality, destroyed the EarthX faith in alternators, is not the same as the Japanese branded units not having the guts already built in to protect you. </p>
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<p>In 30years of using these, there has NEVER been an issue, of any kind, with the Japanese built ND alternators or their sophisticated voltage regulators. </p>