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When you get to Grade 8 you are faced with a brittleness and breakage wher=
e a lower grade will stretch.=C2=A0 I saw a grade 8 bolt break and it was j=
ust holding a rocker shaft pedestal.=C2=A0 Grade 5 is more than adequate.=
=C2=A0=20
=20
Dave=20
=20
=20
-----Original Message-----
From: Greg Donovan <greg@gregoryd.com>
To: Triumphs <triumphs@autox.team.net>
Sent: Fri, May 14, 2021 10:06 am
Subject: Re: [TR] Grade 2 lock nuts
A related by different question:
My instinct here, almost always, would be to err on the side of higher grad=
es. Rated for 2, put a 3 on.
One disadvantage with this approach is cost: higher grades, more money.=20
Other than higher cost, are there other disadvantages to using a higher gra=
de than absolutely needed?
Are there situations where the lower grade is preferable? E.g., if somethin=
g's going to fail under stress, you=E2=80=99d rather it be a grade 2 bolt t=
han the expensive component it=E2=80=99s securing.
=E2=80=94Greg
> On May 14, 2021, at 9:44 AM, Nick Black <vintagenick42@yahoo.com> wrote:
>=20
> I believe that the usual nuts and bolts on a TR are equivalent to grade 5=
or so and they may have been higher grade in this application.
> Grade 2 seems a bit =E2=80=9Cwimpy=E2=80=9D here. I would not use such a =
soft nut especially in this application. Also, do not use =E2=80=9Cstandard=
=E2=80=9D bolts here as the flanges need to ride on the shank of the bolt, =
not on the tread. Either buy the correct bolt and nut or use=C2=A0 NAS bolt=
s and grade 8 locknuts.
>=20
> Of course I may be a little =E2=80=9Cnuts=E2=80=9D myself...
> Nick in NorCal=20
** triumphs@autox.team.net **
Archive: http://www.team.net/pipermail/triumphs http://www.team.net/archiv=
e
sey@cs.com
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<div style=3D"color:black;font: 12pt Arial, Helvetica, sans-serif;">
<div> <font size=3D"3">When you get to Grade 8 you are faced with a brittle=
ness and breakage where a lower grade will stretch. I saw a grade 8 b=
olt break and it was just holding a rocker shaft pedestal. Grade 5 is=
more than adequate. </font><br>
</div>
<div> <br>
</div>
<div style=3D"clear:both"><font size=3D"4">Dave </font><br>
<br>
</div>
<div> <br>
</div>
<div> <br>
</div>
<div style=3D"font-family:arial,helvetica;font-size:10pt;color:black"><font=
size=3D"2">-----Original Message-----<br>
From: Greg Donovan <greg@gregoryd.com><br>
To: Triumphs <triumphs@autox.team.net><br>
Sent: Fri, May 14, 2021 10:06 am<br>
Subject: Re: [TR] Grade 2 lock nuts<br>
<br>
<div dir=3D"ltr">A related by different question:<br>
</div>
<div dir=3D"ltr"><br>
</div>
<div dir=3D"ltr">My instinct here, almost always, would be to err on the si=
de of higher grades. Rated for 2, put a 3 on.<br>
</div>
<div dir=3D"ltr"><br>
</div>
<div dir=3D"ltr">One disadvantage with this approach is cost: higher grades=
, more money. <br>
</div>
<div dir=3D"ltr"><br>
</div>
<div dir=3D"ltr">Other than higher cost, are there other disadvantages to u=
sing a higher grade than absolutely needed?<br>
</div>
<div dir=3D"ltr"><br>
</div>
<div dir=3D"ltr">Are there situations where the lower grade is preferable? =
E.g., if something's going to fail under stress, you=E2=80=99d rather it be=
a grade 2 bolt than the expensive component it=E2=80=99s securing.<br>
</div>
<div dir=3D"ltr"><br>
</div>
<div dir=3D"ltr">=E2=80=94Greg<br>
</div>
<div dir=3D"ltr"><br>
</div>
<div dir=3D"ltr"><br>
</div>
<div dir=3D"ltr"><br>
</div>
<div dir=3D"ltr">> On May 14, 2021, at 9:44 AM, Nick Black <<a ymailt=
o=3D"mailto:vintagenick42@yahoo.com"; href=3D"mailto:vintagenick42@yahoo.com=
">vintagenick42@yahoo.com</a>> wrote:<br>
</div>
<div dir=3D"ltr">> <br>
</div>
<div dir=3D"ltr">> I believe that the usual nuts and bolts on a TR are e=
quivalent to grade 5 or so and they may have been higher grade in this appl=
ication.<br>
</div>
<div dir=3D"ltr">> Grade 2 seems a bit =E2=80=9Cwimpy=E2=80=9D here. I w=
ould not use such a soft nut especially in this application. Also, do not u=
se =E2=80=9Cstandard=E2=80=9D bolts here as the flanges need to ride on the=
shank of the bolt, not on the tread. Either buy the correct bolt and nut o=
r use NAS bolts and grade 8 locknuts.<br>
</div>
<div dir=3D"ltr">> <br>
</div>
<div dir=3D"ltr">> Of course I may be a little =E2=80=9Cnuts=E2=80=9D my=
self...<br>
</div>
<div dir=3D"ltr">> Nick in NorCal <br>
</div>
<div dir=3D"ltr"><br>
</div>
<div dir=3D"ltr">** <a ymailto=3D"mailto:triumphs@autox.team.net"; href=3D"m=
ailto:triumphs@autox.team.net">triumphs@autox.team.net</a> **<br>
</div>
<div dir=3D"ltr"><br>
</div>
<div dir=3D"ltr">Donate: <a href=3D"http://www.team.net/donate.html"; target=
=3D"_blank">http://www.team.net/donate.html</a><br>
</div>
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" target=3D"_blank">http://www.team.net/pipermail/triumphs </a> <a href=3D"=
/a><br>
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</div>
<div dir=3D"ltr">Unsubscribe/Manage: <a href=3D"http://autox.team.net/mailm=
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</font></div>
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