Thanks for the reply. Between your explanation and some extra research I think I now see how the Belleville washer calculations work.
So if I understand correctly, the original Pulsar washer stack of ))(())(())(())(())(( has ten series with each series having two in parallel. This would give a travel of ten times and a force of twice that of a single washer.
I checked on Novokons website and they want $2.00 per washer and they note that a complete set is 20 washers. Of course there is no way of knowing which washers Novokon used, and so no way of knowing the travel and force.
In actual use you would compress the washer stack by some amount to give an adequate spring pressure, yet still leave enough room to squeeze the washer stack further to release the tool?
Does your setup, or for that matter the original Pulsar setup, mean you can only use TTS tools or can you remove enough stuff to enable occasional R8 tooling?