For constant, the weight I use depends on my wetsuit. For the 82m record I used a 1700g neck weight, and no other weight. This was actually too much! Right now it's winter so I use both a neck weight and a huge weight belt (for my 5mm/8mm config). I just ordered the sporasub 7kg weight 'harness' and I'll see how it works for my thick wetsuits.
In the pool, I can't do good dynamics without a wetsuit. I get too cold, and I don't have enough momentum. I need to have lots of inertia, so that I can reduce the number of strokes, and put more energy into the monofin on each stroke (because the greater inertia allows me to flex a stiffer monofin). I use a 3mm full wetsuit, with a 6kg belt and 1.7kg neck weight. However, with this configuration I must go slowly, otherwise the weight belt causes too much drag. I pack to the maximum for dynamic, but not for static.
The fastest deep constant weight dive I have heard of is Pipin Ferreras' 60m in 1'21, using sporasub pure carbon bi-fins. I know that Guillaume Nery and Manolis Giankos dive fast, and I think Alessandro Rignanilloli did his 88m italian record in a fast time like 2'22 or something.
I know that Hubert Maier took 3'20 for his 60m dive in Nice/2000, which is two minutes longer than Pipin takes (1'21) for the same depth!
At Pipin's speed, a 100m dive would take 2'15, and 120m would take 2'42!
Eric Fattah
BC, Canada
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