[TheForge] "Lug nut" torquing - order of tightening? OT

[Bruce Freeman]

Great idea, but these bolts are much smaller than 1".

On Fri, Apr 4, 2008 at 11:13 AM, David E. Smucker
<davesmucker at hotmail.com> wrote:
> Bruce,  Go to the following website,    http://www.superbolt.com/
>
>  Then call and talk to their application engineers.  They should be able to
> give you real world experience.  I have used their systems for real world
> critical applications of heavy load applications.  Good Folks.
>
>  Dave Smucker
>  ----- Original Message ----- From: "Bruce Freeman" <freemab222 at gmail.com>
>  To: "Sponsored by ABANA" <theforge at mailman.qth.net>
>  Sent: Friday, April 04, 2008 10:54 AM
>  Subject: [TheForge] "Lug nut" torquing - order of tightening? OT
>
>
>
> >
> >
> >
> > This relates to my earlier question of torquing SS bolts, but now I'm
> > thinking in terms of order.
> >
> > The bolts are in two circles, tightening together a stack of disks.
> > We want pressure uniform.  To complicate matters there are twice as
> > many bolts in the outer circle than in the inner, namely 36 vs 18.
> > Number them by the inner bolts:  1, 2, 3, ..., 18 for the inner, 1',
> > 1", 2', 2", 3', 3", ..., 18', 18" for the outer.
> >
> > For one time through, we snugged the bolts around the circles, then
> > tightened:  1, `10, 1', 10', 1", 10"; then moved on to 2, 11, 2', 11',
> > 2", 11", etc.
> >
> > Another time through we tightened, 1, 1', 1", 10, 10', 10"; then moved
> > to 2, 2', 2", 11, 11', 11", etc.
> >
> > But later I got to thinking that this might not be ideal.  For lug
> > nuts, you tighten in a star pattern.  I presume something similar
> > would  be better for this stack as well.  But what offset?  180degrees
> > then 90 degrees?  or ~60 degrees?
> >
> > Any thoughts or wisdom to share?
> >
> > -
> > Bruce
> > NJ
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-- 
Bruce
NJ