I agree, the damper valve in a rear unit must be different that in a front unit and so the two are not truly interchangeable for one another even if the displacement cones are swapped. But others have swapped front for rear with acceptable results I have been told.
At the moment, I have 5 rears and 3 front spare spheres and I have taken two of the front’s and modified them with Schrader valves and have recharged them to 16.55bar. I’m looking to modify a couple rears in the next couple of weeks.
i wonder about using a different compressible gas, than nitrogen, mowog.
i think about argon.. because its heavier than air. CO2 is not a choice because of its reaction with hydrogen and oxygen, but i think about argon because of its ability to be non reactive, and being heavier than air.
using it, would mean it would displace air... being heavier, and so air in the chamber would naturally sit at the top, like oil floats on water,
that would mean given settle time... one could bleed off air content in the chamber, because its closest to the valve one puts in, and so over time one would have an argon filled chamber... without, any other gas...
so.. one inhibits rust and reaction , by excluding things which begin it?
that said i dont know - this mo as i post, how the compression of argon is dissimilar to nitrogen. if the change is big... one would have to weigh up the differences the damper valve would see.
i just like the idea of argon this mo, because of it non reactivity, and being heavier than air... being heavier, it wants to stay below air... than above it.. even under pressure..?
so lets suppose one fills a hot dry chamber with argon. any air will naturally not mix or react with it... and it displaces air over time.. naturally sitting in the lowest point.. which is the gas gasket...
if it leaks, through the gasket or the valve, or even the steel chamber, or a weld - maybe its detectable? are there argon sensors one could use to detect a leak.?
unlike nitrogen.. argon will naturally seek the lowest point... because it is heavier than the air its leaking into.
" argon is about 1 1/2 times heavier than air so will fill confined spaces from the bottom up"
i think that has benefit, this mo.