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madmole once bubbled...
You guessed what I'm planning!!!, yep a Twinspiration. 4 x 2L cylinders, 2 scrubbers the primary will be a 5 hour rated radial.
So I'll have a 5 hour primary unit with a 3 hour bailout. Should be good to 140m ish with no side slungs!!!!!! and be the same weight as twin 12's with a stage . We are working on a joint scrubber design so the heat from the primary keeps the secondary up to speed
I have a particular 125m Dive I'm aiming at for next year. Undived Virgin wreck