[Milsurplus] [ARC5] ARB Shock Mount Question- Again

[Mike Hanz]

On 12/14/2013 3:02 PM, J. Forster wrote:
> Now the mount per say is explained, what about the mounting hardware. Each
> mount seems to have:
>
> 1x   #8-32 x 1 1/8" RHMS
> 1x   #8-32 Aircraft self-locking nut
> 2x   #8 x 1" Flat Washers
> 3x   #8 x 3/8" Flat Washers
>
> It L@@KS like the 1" flat washer are stops for the shock mounts.

They are indeed, but they are not intended to be hard stops - just to 
add another layer of resistance to the rubber in the shock unit when it 
reaches a certain point.

> Does anyone know how to assemble this Dagwood Sandwich?

Not much to it, John.  The order is machine screw, 3/8" washer, 1" 
washer, shock unit, 1" washer, 3/8" washer, aircraft shelf or cross 
member, 3/8" washer, and finally the nut.  The 1" washers need to 
provide a bit of deflection to do their stopping job without suddenly 
putting a High-G stop to the mount, and that's the reason for spacing 
them with a 3/8" backup washer at both ends.  It provides sort of a two 
step piecewise linear deflection curve.

Happy mounting... :-)

  - Mike