This is a multi-part message in MIME format.
--===============3893087798511434621==
boundary="----=_NextPart_000_0877_01D0C3C9.439CD9A0"
This is a multi-part message in MIME format.
------=_NextPart_000_0877_01D0C3C9.439CD9A0
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
Chris, maybe try Pauter, or if your pockets are deeper, Carrillo. Both =
make quality parts.
Good luck.
Bill
----- Original Message -----=20
From: MadMarx=20
To: 'FOT'=20
Sent: Tuesday, July 21, 2015 1:24 PM
Subject: [Fot] Racing rod design
Hi Guys,
=20
After my engine blow at the last race and a rod in two pieces I =
investigated about rod design.
=20
In US forums I found an interesting opinion:
=20
H-beam rods are for low rev high torque engine (turbo, compressor)
I-beam are for medium torque engines with high revs
=20
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.
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.
That means to me that the fatigue resistance is smaller on an H-beam =
rod at high revs.
With high revs on a long stroke engine I mean 6000+.
=20
The manufacturer of the broken H-beam rod was Scat.
=20
I think next time I order an I-beam rod from Scat.
=20
What do you think?
=20
Cheers
Chris
-------------------------------------------------------------------------=
-----
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Donate: http://www.team.net/donate.html
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
Unsubscribe/Manage: =
http://autox.team.net/mailman/options/fot/william.tobin31@verizon.net
------=_NextPart_000_0877_01D0C3C9.439CD9A0
charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML xmlns=3D"http://www.w3.org/TR/REC-html40"; xmlns:v =3D=20
"urn:schemas-microsoft-com:vml" xmlns:o =3D=20
"urn:schemas-microsoft-com:office:office" xmlns:w =3D=20
"urn:schemas-microsoft-com:office:word" xmlns:m =3D=20
"http://schemas.microsoft.com/office/2004/12/omml";><HEAD>
<META content=3D"text/html; charset=3Diso-8859-1" =
http-equiv=3DContent-Type>
<META name=3DGENERATOR content=3D"MSHTML 8.00.6001.23588">
<STYLE>@font-face {
font-family: Cambria Math;
}
@font-face {
font-family: Calibri;
}
@font-face {
font-family: Verdana;
}
@font-face {
font-family: Tahoma;
}
@page WordSection1 {size: 612.0pt 792.0pt; margin: 70.85pt 70.85pt 2.0cm =
70.85pt; }
P.MsoNormal {
MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman","serif"; FONT-SIZE:
=
12pt
}
LI.MsoNormal {
MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman","serif"; FONT-SIZE:
=
12pt
}
DIV.MsoNormal {
MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman","serif"; FONT-SIZE:
=
12pt
}
A:link {
COLOR: blue; TEXT-DECORATION: underline; mso-style-priority: 99
}
SPAN.MsoHyperlink {
COLOR: blue; TEXT-DECORATION: underline; mso-style-priority: 99
}
A:visited {
COLOR: purple; TEXT-DECORATION: underline; mso-style-priority: 99
}
SPAN.MsoHyperlinkFollowed {
COLOR: purple; TEXT-DECORATION: underline; mso-style-priority: 99
}
P {
FONT-FAMILY: "Times New Roman","serif"; MARGIN-LEFT: 0cm; FONT-SIZE: =
12pt; MARGIN-RIGHT: 0cm; mso-style-priority: 99; mso-margin-top-alt: =
auto; mso-margin-bottom-alt: auto
}
P.MsoAcetate {
MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Tahoma","sans-serif"; FONT-SIZE: =
8pt; mso-style-priority: 99; mso-style-link: "Sprechblasentext Zchn"
}
LI.MsoAcetate {
MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Tahoma","sans-serif"; FONT-SIZE: =
8pt; mso-style-priority: 99; mso-style-link: "Sprechblasentext Zchn"
}
DIV.MsoAcetate {
MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Tahoma","sans-serif"; FONT-SIZE: =
8pt; mso-style-priority: 99; mso-style-link: "Sprechblasentext Zchn"
}
SPAN.E-MailFormatvorlage19 {
FONT-FAMILY: "Verdana","sans-serif"; COLOR: #1f497d; mso-style-type: =
personal-reply
}
SPAN.SprechblasentextZchn {
FONT-FAMILY: "Tahoma","sans-serif"; mso-style-priority: 99; =
mso-style-link: Sprechblasentext; mso-style-name: "Sprechblasentext =
Zchn"
}
.MsoChpDefault {
FONT-SIZE: 10pt; mso-style-type: export-only
}
DIV.WordSection1 {
page: WordSection1
}
</STYLE>
<!--[if gte mso 9]><xml>
<o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext=3D"edit">
<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--></HEAD>
<BODY lang=3DDE link=3Dblue bgColor=3D#ffffff vLink=3Dpurple>
<DIV><FONT size=3D2 face=3DArial>Chris, maybe try Pauter, or if your =
pockets are=20
deeper, Carrillo. Both make quality parts.</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial>Good luck.</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial>Bill</FONT></DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; =
PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: =
black"><B>From:</B>=20
<A title=3Dtr4racing@googlemail.com=20
href=3D"mailto:tr4racing@googlemail.com";>MadMarx</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dfot@autox.team.net=20
href=3D"mailto:fot@autox.team.net";>'FOT'</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Tuesday, July 21, 2015 =
1:24=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [Fot] Racing rod =
design</DIV>
<DIV><BR></DIV>
<DIV class=3DWordSection1>
<DIV>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt">Hi=20
Guys,<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"><o:p> </o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US>After my engine blow at the last race and a rod in two =
pieces I=20
investigated about rod design.<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US><o:p> </o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US>In US forums I found an interesting =
opinion:<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US><o:p> </o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US>H-beam rods are for low rev high torque engine (turbo,=20
compressor)<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US>I-beam are for medium torque engines with high=20
revs<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US><o:p> </o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US>As engineer I agree with this statement. On high revs the =
rod shaft=20
gets bended back and forth by the inertia caused by the=20
rotation.<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US>I could imagine that the sharp sides of the H-beam rod =
will create=20
a crack after a while because the stiffness for bending along the =
rotation=20
axis smaller than with an I-beam rod.<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US>That means to me that the fatigue resistance is smaller =
on an=20
H-beam rod at high revs.<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US>With high revs on a long stroke engine I mean=20
6000+.<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US><o:p> </o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US>The manufacturer of the broken H-beam rod was=20
Scat.<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US><o:p> </o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US>I think next time I order an I-beam rod from=20
Scat.<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US><o:p> </o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US>What do you think?<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US><o:p> </o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US>Cheers<o:p></o:p></SPAN></P>
<P class=3DMsoNormal><SPAN=20
style=3D"FONT-FAMILY: 'Verdana','sans-serif'; COLOR: #1f497d; =
FONT-SIZE: 10pt"=20
lang=3DEN-US>Chris<o:p></o:p></SPAN></P></DIV></DIV>
<P>
<HR>
=
<P></P>_______________________________________________<BR>fot@autox.team.=
net<BR><BR>http://www.fot-racing.com<BR><BR>Donate:=20
http://www.team.net/donate.html<BR>Archive:=20
http://www.team.net/archive<BR>Forums:=20
http://www.team.net/forums<BR>Unsubscribe/Manage:=20
=
http://autox.team.net/mailman/options/fot/william.tobin31@verizon.net<BR>=
<BR><BR></BLOCKQUOTE></BODY></HTML>
------=_NextPart_000_0877_01D0C3C9.439CD9A0--
--===============3893087798511434621==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
--===============3893087798511434621==--
|