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Hi Frank, You bring up an issue with springs I've been pondering for some time now. I could be wrong, but don't both the Nemo sub and the R300 sub use stainless steel hatch springs? I was thinking about using a couple of gas shocks, like used on mini-van rear hatches, internally to lift my hatch or use two smaller springs for one hatch, like used on Nemo. But I would be interested in how your leaf spring idea works out Frank. I would think if would take some figuring to get the full range of motion you would desire with a hatch. You might have to heat up the leaf spring and then bend it into more of an arce and then retemper it to the peacock color. I don't see how your going to get the spring to hold the hatch down, other then the hinge side of the hatch if your using the slotted hinge method. I always figured that the larger and perhaps softer O-rings like used on Kraka or even a lipped seal would make it easier to seal out low pressure water near the surface.
Regards, Brent Hartwig
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