Mike Kerr wrote:
>
> wait again mark there is very little shear load on the bolts that hold the
> upper spindle to the car frame , since the upper a arm pivots on the shaft,
> and the geometry of the pivot pt to the action of the a arm only applies
> very little shear the biggest load is tension on the bolts. Now on the
> bottom A arm where the attaching bolts for the shaft are 90 deg. to the
> applied force on the shaft the bolts their would have a greater shear load
> but not the top
>
> also the blot used should be a 7/16 fine thread not a metric
I was not addressing a specific bolt either in terms of application or
in size/thread pitch. What I was trying to point out is that bolts are
built for specific purposes and simply going to an alternate grade
fastener, even when it is a so-called higher grade, is not always a good
idea. I guess what I'm saying is that there is a lot more to the science
of fasteners than just getting the highest numerical grade available.
--
Marc Sayer
Editor/Publisher
Z Car & Classic Datsun Magazine
http://zcarmag.com
Voice 541-726-6001
Fax 541-746-0863/726-6001
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