Why does the SS washer work in an Aluminum Body?

[LK-13]

ok, we have all seen "Newton's Cradle" in action,
so here is my question,
We put the SS washer in between the drive spring and the soft Aluminium bodies of our markers because the spring could hammer the body to pieces, mushrooming into the breach and so on...
in AGD aluminium bodies they use a spring ring clip to keep the SS Washer in proper position.
other aluminium bodies use a set screw to hold the ring in position.
but some use nothing at all, the SS washer is butted up against the breach and held in place by the drive spring.
so with out using a washer that s larger than the 1" rear bore to spread out the energy,
why doesn't the energy just transit the washer and hammer the breach till it's FUBAR?

[hill160881]

Its more about the spring turning and cutting into the aluminum as it fires rather than impact.

[DevilMan]

For the same reason if you put a drum of rocks only half full and start tumbling them they will make one hell of a racket. If you fill it to the gills full they won't make any sound and won't wear down and such.

and....

because.

[Spider-TW]

Its more about the spring turning and cutting into the aluminum as it fires rather than impact.

And the same effect as most flat washers are intended, to distribute the force to a wider area and reducing point stresses.

[DevilMan]

What's the difference in the pin of the ULT on/off and the RT on/off. The footprint is much different.

DM

[Newt]

Magic elves. They have an affinity for stainless, so it's used in high stress areas.

[athomas]

Spider-TW summed it up. The washer is designed to distribute the load to wide area rather than have all the force hit in an area as small as the edge of the spring.

[GoatBoy]

I'm assuming it's a matter of hardness; steel being harder than aluminum. Punching a heavy bag with or without bag gloves is roughly the same thing, but the skin on your hands might detect a difference.

[athomas]

Yes, I suppose hardness is a better explanation. The steel is harder than the aluminum with better wear properties, so it can withstand the impact from the smaller edge of the spring without damage. It can then distribute the impact energy over a larger area of the aluminum so that the aluminum does not bend or get stretched out of shape in one small area.