<html><head></head><body><div class="ydp49b9045yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div><div dir="ltr" data-setdir="false">If you go to the Powermaster website, they have a formula to determine the proper alternator you need based on crank pully size and max RPM of your engine. I burned up 2 of the cheap Denso units designed for fork lift use in a year and after installing the Powermaster unit all has been good.</div><div><br></div><div class="ydp49b9045signature">Greg Thompson </div></div>
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On Monday, May 19, 2025 at 10:12:47 AM CDT, Michael Moore via Fot <fot@autox.team.net> wrote:
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<p class="ydpfce06ca6yiv0632400883MsoNormal"><span style="font-size:11.0pt;">Do you have the part number for the powermaster?</span></p>
<p class="ydpfce06ca6yiv0632400883MsoNormal"><span style="font-size:11.0pt;"> </span></p>
<p class="ydpfce06ca6yiv0632400883MsoNormal"><span style="color:#006600;">Have a Good Day</span><span style="font-size:11.0pt;color:#006600;"></span></p>
<p class="ydpfce06ca6yiv0632400883MsoNormal"><span style="color:#006600;">Mike</span></p>
<p class="ydpfce06ca6yiv0632400883MsoNormal"><span style="font-family:sans-serif;color:#006600;"> </span></p>
<p class="ydpfce06ca6yiv0632400883MsoNormal"><span style="color:#006600;">Michael T. Moore, CPA</span></p>
<p class="ydpfce06ca6yiv0632400883MsoNormal"><span style="color:#006600;">3255 West 26<sup>th</sup> Street</span><span style="font-size:11.0pt;color:#006600;"></span></p>
<p class="ydpfce06ca6yiv0632400883MsoNormal"><span style="color:#006600;">Erie, PA 16506</span></p>
<p class="ydpfce06ca6yiv0632400883MsoNormal"><span style="color:#006600;"> </span></p>
<p class="ydpfce06ca6yiv0632400883MsoNormal"><span style="color:#006600;">Phone: 814-616-8652 ext 100</span></p>
<p class="ydpfce06ca6yiv0632400883MsoNormal"><span style="color:#006600;">Fax: 888-865-5279</span></p>
<p class="ydpfce06ca6yiv0632400883MsoNormal"><span style="color:#006600;">Email: <a shape="rect" href="mailto:mmoore@mtmcpafirm.com" rel="nofollow" target="_blank">
<span style="color:#0563C1;">mmoore@mtmcpafirm.com</span></a></span></p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal"><b><span style="font-size:11.0pt;font-family:sans-serif;">From:</span></b><span style="font-size:11.0pt;font-family:sans-serif;"> Fot <fot-bounces@autox.team.net>
<b>On Behalf Of </b>JS Performance Motoring, LLC via Fot<br clear="none">
<b>Sent:</b> Monday, May 19, 2025 10:21 AM<br clear="none">
<b>To:</b> Mike Harmuth <ofracer@gmail.com><br clear="none">
<b>Cc:</b> FoTTriumph <fot@autox.team.net><br clear="none">
<b>Subject:</b> Re: [Fot] What alternators are you using on a Spitfire?</span></p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal">Mike,</p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal"> The mini-denso style alternators work great. There is a difference in quality between the cheapest, bottom of the barrel options, and the more expensive options. </p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal">When my $10 Amazon special failed at VIR last year (had been in service since 2020), the backup unit I borrowed from Henry Frye looked identical, but weighed substantially more! There's clearly a difference. </p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal">Currently, I'm running a powermaster brand and it seems to be well made.</p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal">I also like to run a larger pulley to slow things down. Here in the states, you can get a 4" pulley sold as Powermaster p/n 182. This is a direct swap onto the mini denso.</p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal"><img id="ydpfce06ca6yiv0632400883Picture_x0020_2" border="0" style="width: 563px; max-width: 798px;" src="cid:Okhp3LGeGIGlMj5InabS" data-inlineimagemanipulating="true"></p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal">We were also watching the J500 at my house, did you catch the medium bore race, where under full course caution, the commentator shouted "Slow down, Henry!". We about fell out of our chairs laughing!</p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal">Jason Sukey</p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal">JS Performance Motoring, LLC</p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal">440.984.7720</p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal"><a shape="rect" href="mailto:jason@jsperformancemotoring.com" rel="nofollow" target="_blank">jason@jsperformancemotoring.com</a></p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal"><a shape="rect" href="http://www.jspmparts.com" rel="nofollow" target="_blank">www.jspmparts.com</a></p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal"><a shape="rect" href="https://www.facebook.com/JSPerformanceMotoring/" rel="nofollow" target="_blank">https://www.facebook.com/JSPerformanceMotoring/</a></p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal">On Mon, May 19, 2025 at 9:01<span style="font-family:sans-serif;"> </span>AM Mike Harmuth via Fot <<a shape="rect" href="mailto:fot@autox.team.net" rel="nofollow" target="_blank">fot@autox.team.net</a>> wrote:</p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal">I'm getting tired of replacing the stock type alternators. They used to last a few seasons but now it seems like a few weekends is the norm.</p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal"> </p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal"> Like oil, I know there will be many different opinions, including running without one. That being said, any suggestions/part numbers/suppliers of a system that works for you?</p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal">BTW, I enjoyed watching the Jeff 500 last weekend on the VRG live stream (currently available on YouTube). Nice job against the 911 Mr. Frye.</p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal">thanks</p>
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<p class="ydpfce06ca6yiv0632400883MsoNormal">mike h</p>
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