This is a multi-part message in MIME format.
--===============7042555701757404816==
boundary="----=_NextPart_000_0026_01D0C51F.FC9537C0"
Content-Language: de
This is a multi-part message in MIME format.
------=_NextPart_000_0026_01D0C51F.FC9537C0
charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Hi Brad,
=20
we are just discussing the shape pattern, not the manufacturer. The =
failed rod came from Scat.
Your link is leading to a Chinese rod.
=20
Cheers
Chris
=20
Von: Fot [mailto:fot-bounces@autox.team.net] Im Auftrag von Brad Eells
Gesendet: Donnerstag, 23. Juli 2015 02:06
Cc: FOT
Betreff: Re: [Fot] Racing rod design
=20
Are these the Ebay rods that have been discussed?
=20
http://www.ebay.com/itm/Connecting-Rods-for-Triumph-TR3-TR4-Forged-Conrod=
s-Con-Rod-158-75mm-ARP-Bolts-/131562025540?hash=3Ditem1ea1b53244 =
<http://www.ebay.com/itm/Connecting-Rods-for-Triumph-TR3-TR4-Forged-Conro=
ds-Con-Rod-158-75mm-ARP-Bolts-/131562025540?hash=3Ditem1ea1b53244&vxp=3Dm=
tr> &vxp=3Dmtr
=20
Any thoughts? The price is certainly attractive...
=20
=20
Brad
=20
On Tue, Jul 21, 2015 at 12:24 PM, MadMarx <tr4racing@googlemail.com> =
wrote:
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
Archive: http://www.team.net/archive
http://autox.team.net/mailman/options/fot/tr4abrad@gmail.com
=20
--=20
Brad Eells
Friends of Triumph
http://www.fot-racing.com/
=20
=
<https://docs.google.com/uc?id=3D0B9vVTDWaFCqFYVNfS2ZBaHdmXzg&export=3Ddo=
wnload>=20
=20
------=_NextPart_000_0026_01D0C51F.FC9537C0
charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
<html xmlns:v=3D"urn:schemas-microsoft-com:vml" =
xmlns:o=3D"urn:schemas-microsoft-com:office:office" =
xmlns:w=3D"urn:schemas-microsoft-com:office:word" =
xmlns:m=3D"http://schemas.microsoft.com/office/2004/12/omml"; =
xmlns=3D"http://www.w3.org/TR/REC-html40";><head><meta =
http-equiv=3DContent-Type content=3D"text/html; charset=3Dutf-8"><meta =
name=3DGenerator content=3D"Microsoft Word 12 (filtered medium)"><!--[if =
!mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Tahoma;
panose-1:2 11 6 4 3 5 4 4 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.E-MailFormatvorlage17
{mso-style-type:personal-reply;
font-family:"Verdana","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 2.0cm 70.85pt;}
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 =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>Hi Brad,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>we are just discussing the shape pattern, not the manufacturer. The =
failed rod came from Scat.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>Your link is leading to a Chinese rod.<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>Cheers<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>Chris<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><div =
style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>Von:</span><=
/b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
Fot [mailto:fot-bounces@autox.team.net] <b>Im Auftrag von </b>Brad =
Eells<br><b>Gesendet:</b> Donnerstag, 23. Juli 2015 02:06<br><b>Cc:</b> =
FOT<br><b>Betreff:</b> Re: [Fot] Racing rod =
design<o:p></o:p></span></p></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>Are =
these the Ebay rods that have been discussed?<o:p></o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal><a =
href=3D"http://www.ebay.com/itm/Connecting-Rods-for-Triumph-TR3-TR4-Forge=
d-Conrods-Con-Rod-158-75mm-ARP-Bolts-/131562025540?hash=3Ditem1ea1b53244&=
amp;vxp=3Dmtr">http://www.ebay.com/itm/Connecting-Rods-for-Triumph-TR3-TR=
4-Forged-Conrods-Con-Rod-158-75mm-ARP-Bolts-/131562025540?hash=3Ditem1ea1=
b53244&vxp=3Dmtr</a><o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Any thoughts? The price is certainly =
attractive...<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal>Brad<o:p></o:p></p></div></div><div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>On Tue, =
Jul 21, 2015 at 12:24 PM, MadMarx <<a =
href=3D"mailto:tr4racing@googlemail.com"; =
target=3D"_blank">tr4racing@googlemail.com</a>> =
wrote:<o:p></o:p></p><div><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>Hi Guys,</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'> </span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>After my engine blow at the last race and a rod in two pieces I =
investigated about rod design.</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'> </span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>In US forums I found an interesting opinion:</span><o:p></o:p></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'> </span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>H-beam rods are for low rev high torque engine (turbo, =
compressor)</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>I-beam are for medium torque engines with high =
revs</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'> </span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>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.</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>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.</span><o:p></o:p></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>That means to me that the fatigue resistance is smaller on an H-beam =
rod at high revs.</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>With high revs on a long stroke engine I mean =
6000+.</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'> </span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>The manufacturer of the broken H-beam rod was =
Scat.</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'> </span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>I think next time I order an I-beam rod from =
Scat.</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'> </span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>What do you think?</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'> </span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>Cheers</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:10.0pt;font-family:"Verdana","sans-serif";color:#1F497=
D'>Chris</span><o:p></o:p></p></div></div></div><p class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><br>______________________________________=
_________<br><a =
href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</a><br><br><a =
href=3D"http://www.fot-racing.com"; =
target=3D"_blank">http://www.fot-racing.com</a><br><br>Donate: <a =
href=3D"http://www.team.net/donate.html"; =
target=3D"_blank">http://www.team.net/donate.html</a><br>Archive: <a =
href=3D"http://www.team.net/archive"; =
target=3D"_blank">http://www.team.net/archive</a><br>Forums: <a =
href=3D"http://www.team.net/forums"; =
target=3D"_blank">http://www.team.net/forums</a><br>Unsubscribe/Manage: =
<a href=3D"http://autox.team.net/mailman/options/fot/tr4abrad@gmail.com"; =
target=3D"_blank">http://autox.team.net/mailman/options/fot/tr4abrad@gmai=
l.com</a><br><br><br><o:p></o:p></p></div><p class=3DMsoNormal><br><br =
clear=3Dall><o:p></o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><p class=3DMsoNormal>-- =
<o:p></o:p></p><div><div><div><div><div><div><div><div><div><div><div><p =
class=3DMsoNormal><b>Brad Eells</b><o:p></o:p></p></div><div><p =
class=3DMsoNormal><b>Friends of Triumph</b><o:p></o:p></p></div><div><p =
class=3DMsoNormal><b><a href=3D"http://www.fot-racing.com/"; =
target=3D"_blank">http://www.fot-racing.com/</a></b><o:p></o:p></p></div>=
<div><p class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal><img border=3D0 width=3D96 height=3D71 =
id=3D"_x0000_i1025" =
src=3D"https://docs.google.com/uc?id=3D0B9vVTDWaFCqFYVNfS2ZBaHdmXzg&e=
xport=3Ddownload"><o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div></div></div></div></div></di=
v></div></div></div></div></div></div></div></body></html>
------=_NextPart_000_0026_01D0C51F.FC9537C0--
--===============7042555701757404816==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
fot@autox.team.net
http://www.fot-racing.com
Archive: http://www.team.net/archive
--===============7042555701757404816==--
|