<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Those are the ones — and we’ve discussed them here before. Some were skeptical but a couple of FoT’ers spoke up and said they’d used them and were happy with them.<div class="">Duncan</div><div class="">(Texas)</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On Jul 22, 2015, at 8:05 PM, Brad Eells <<a href="mailto:tr4abrad@gmail.com" class="">tr4abrad@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Are these the Ebay rods that have been discussed?<div class=""><br class=""></div><div class=""><a href="http://www.ebay.com/itm/Connecting-Rods-for-Triumph-TR3-TR4-Forged-Conrods-Con-Rod-158-75mm-ARP-Bolts-/131562025540?hash=item1ea1b53244&vxp=mtr" class="">http://www.ebay.com/itm/Connecting-Rods-for-Triumph-TR3-TR4-Forged-Conrods-Con-Rod-158-75mm-ARP-Bolts-/131562025540?hash=item1ea1b53244&vxp=mtr</a><br class=""></div><div class=""><br class=""></div><div class="">Any thoughts? The price is certainly attractive...</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">Brad</div></div><div class="gmail_extra"><br class=""><div class="gmail_quote">On Tue, Jul 21, 2015 at 12:24 PM, MadMarx <span dir="ltr" class=""><<a href="mailto:tr4racing@googlemail.com" target="_blank" class="">tr4racing@googlemail.com</a>></span> wrote:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang="DE" link="blue" vlink="purple" class=""><div class=""><div class=""><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class="">Hi Guys,<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class="">After my engine blow at the last race and a rod in two pieces I investigated about rod design.<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class="">In US forums I found an interesting opinion:<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class="">H-beam rods are for low rev high torque engine (turbo, compressor)<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class="">I-beam are for medium torque engines with high revs<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class="">As engineer I agree with this statement. On high revs the rod shaft gets bended back and forth by the inertia caused by the rotation.<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class="">I could imagine that the sharp sides of the H-beam rod will create a crack after a while because the stiffness for bending along the rotation axis smaller than with an I-beam rod.<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class="">That means to me that the fatigue resistance is smaller on an H-beam rod at high revs.<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class="">With high revs on a long stroke engine I mean 6000+.<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class="">The manufacturer of the broken H-beam rod was Scat.<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class="">I think next time I order an I-beam rod from Scat.<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class="">What do you think?<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class="">Cheers<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1f497d" class="">Chris<u class=""></u><u class=""></u></span></p></div></div></div><br class="">_______________________________________________<br class="">
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<br class=""></blockquote></div><br class=""><br clear="all" class=""><div class=""><br class=""></div>-- <br class=""><div class="gmail_signature"><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class=""><div dir="ltr" class=""><div class=""><b class="">Brad Eells</b></div><div class=""><b class="">Friends of Triumph</b></div><div class=""><b class=""><a href="http://www.fot-racing.com/" target="_blank" class="">http://www.fot-racing.com/</a><br class=""></b></div><div class=""><b class=""><br class=""></b></div><div class=""><img src="https://docs.google.com/uc?id=0B9vVTDWaFCqFYVNfS2ZBaHdmXzg&export=download" width="96" height="71" class=""><br class=""></div><div class=""><br class=""></div></div></div></div></div></div></div></div></div></div></div>
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