For Trade hp100 to hp80 or hp80 for hp100

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Thanks. I'll look out fir that. Right now I have to balance an 80 with a 100. Both same manufacturer but the80 is 2 inches shorted and a pound lighter. I can trim that but not indeal. Lol.
 
just a suggestion here, be careful of matching two tanks from different manufacturers. Even if they have the same outside diameter, their buoyancy characteristics may not match. For example, I've got a couple of steel Asahi 100s. They are several pounds heavier in water than Fabers. You might find an unbalanced set of doubles troublesome.
Its a very valid point. I will post the tank characteristics in a minute.
 
My tank is a

PST 80 Pressure 3500 volume 82 Outside Diamter 7.25 Lenght 19.75 Empty weight 28.6
Buoyancy empty and full. -3.3 -9.3

Its best to double tanks that are made at the same time by the same manufacturer.
I am not doubling a 100. But I do want to get a 100 someday as that is not part of my inventory.
 
just a suggestion here, be careful of matching two tanks from different manufacturers. Even if they have the same outside diameter, their buoyancy characteristics may not match. For example, I've got a couple of steel Asahi 100s. They are several pounds heavier in water than Fabers. You might find an unbalanced set of doubles troublesome.
Do you know where I can lookup the specs on the Genesis HP100 tanks? Both the PST and Asahi versions.

This is the data I have-
Asahi HP100: Weight - "36.4" lbs, Buoyancy *EMPTY - "-5.2" lbs (w/valve)
PST HP100: Weight - "34.1" lbs, Buoyancy *EMPTY - "-1.3" lbs (w/valve)
 
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@guruboy, I've looked everywhere on the web and I can't find specs for those tanks listed on a company website. The data I have found are the same as what you've listed. From my experience with the 100 Asahi, I can tell you the specs you have there are pretty close. Unfortunately, I don't have any experience with the PSTs, but those specs look pretty close to the Faber 100s.
 
https://www.shearwater.com/products/perdix-ai/

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