<font color='black' size='2' face='Arial, Helvetica, sans-serif'><font size="2">In addition to the rotating mass issues, the recip weight inertial forces create heavy tensile loads in the rods & bending loads in the crank @ TDC high rpm...<br>
FWIW<br>
Glen<br>
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<div style="font-family:arial,helvetica;font-size:10pt;color:black">-----Original Message-----<br>
From: Aaron <hpspitfire@gmail.com><br>
To: fot <fot@autox.team.net><br>
Sent: Thu, Jul 23, 2015 2:15 pm<br>
Subject: Re: [Fot] Racing rod design<br>
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I guess I'm confused. How much worse is the stroke of a tr4.
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In my spitfire 1500 we use stock rods and a stock crank shaft and shift point is 7200 rpm. Guys using the moldex cranks and forged rods are getting 8500 or so. And these are the pauter x style.
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Are you sure the initial failure was the rod and not something before that?
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AaronJohnson
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H Prod spitfire 1500
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Sent from my iPhone
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On Jul 23, 2015, at 07:40, John Hasty <
<a target="_blank" removedlink__5f9af8eb-5c63-4876-8e51-dc16b90a2517__href="mailto:jhasty@mhc-law.com">jhasty@mhc-law.com</a>> wrote:
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<div class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Gee Whiz….you guys know a h- - - of a lot more about this than me, but I reason that if Manley etc. make a rod that withstands the rigors of a 800+ hp American V8 turning upwards of 9000 rpm and it costs ½ of what P and C are charging it makes sense to use them…..</span></div>
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<div class="MsoNormal" style="text-autospace:none"><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:#1F497D">John H. Hasty</span><span style="font-family:"Arial",sans-serif;color:#1F497D"> </span><span style="font-size:10.0pt;font-family:"Arial Narrow",sans-serif;color:#632423">|<b> MULLEN HOLLAND & COOPER P.A</b></span><b><span style="font-size:10.0pt;font-family:"Arial Narrow",sans-serif;color:green">.</span></b></div>
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<div class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Fot [<a target="_blank" removedlink__5f9af8eb-5c63-4876-8e51-dc16b90a2517__href="mailto:fot-bounces@autox.team.net">mailto:fot-bounces@autox.team.net</a>] <b>On Behalf Of </b>John Styduhar<br>
<b>Sent:</b> Thursday, July 23, 2015 9:59 AM<br>
<b>To:</b> Christian Marx; Triumph 'Friends of Triumph<br>
<b>Subject:</b> Re: [Fot] Racing rod design</span></div>
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<div class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Pauter has been making this design for almost 30 years with zero cold failures. If it were a poor design they would have changed it out of necessity. According to a Pauter rep., the main reason they started manufacturing their own rods in the first place was due to the fact that the H beam and I beam rods they were using couldn’t put up with what they were throwing at them with their turbo charged 4cylinder engines. </span></div>
<div class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">If you spin a rod bearing, eventually you will break anything. </span></div>
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<div class="MsoNormal">On Thu, Jul 23, 2015 at 9:49 AM, Christian Marx <<a target="_blank" removedlink__5f9af8eb-5c63-4876-8e51-dc16b90a2517__href="mailto:tr4racing@googlemail.com">tr4racing@googlemail.com</a>> wrote:</div>
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<div>I saw the pictures of Pauter.<br>
This type has no material were it needs and too much were it doesn't make sense. Maybe for very short rods usable. </div>
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<div class="MsoNormal">Am 23.07.2015 14:46 schrieb "John Styduhar" <<a target="_blank" removedlink__5f9af8eb-5c63-4876-8e51-dc16b90a2517__href="mailto:johnstydo@gmail.com">johnstydo@gmail.com</a>>:</div>
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<div class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">The Pauter design is a cross-beam (an inside-out H beam) not an x-beam and shares H-beam design properties because of this. </span></div>
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<div class="MsoNormal">On Thu, Jul 23, 2015 at 3:34 AM, MadMarx <<a target="_blank" removedlink__5f9af8eb-5c63-4876-8e51-dc16b90a2517__href="mailto:tr4racing@googlemail.com">tr4racing@googlemail.com</a>> wrote:</div>
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<div class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D">Today I had a look to a book called race car design.</span><span lang="DE"></span></div>
<div class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D">It also contains engines, and as detail rods and their designs. I, H, blade – no x-beam (seems they never got the idea that someone could get the idea of an x-beam rod)</span><span lang="DE"></span></div>
<div class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D"> </span><span lang="DE"></span></div>
<div class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D">They said that F1 uses I-beam rods because they have the best stiffness to weight ratio.</span><span lang="DE"></span></div>
<div class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D">Also German DTM-cars use I-beam rods.</span><span lang="DE"></span></div>
<div class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D"><a target="_blank" removedlink__5f9af8eb-5c63-4876-8e51-dc16b90a2517__href="https://en.wikipedia.org/wiki/Deutsche_Tourenwagen_Masters">https://en.wikipedia.org/wiki/Deutsche_Tourenwagen_Masters</a></span><span lang="DE"></span></div>
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<div class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D">Cheers</span><span lang="DE"></span></div>
<div class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:#1F497D">Chris</span><span lang="DE"></span></div>
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