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35ml internal volume mask
- Thread starterADR
- Start date
Thread Status: Hello
, There was no answer in this thread for more than 60 days.
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Sounds interesting and very promising. A talented dude (or duo if you had a hand in this). Did you compare performance against the WW footpockets?
I'de personally go with comfortability as long as not going all the way towards fullfoot (unless it works reasonably).
I'de personally go with comfortability as long as not going all the way towards fullfoot (unless it works reasonably).
So it even saves some weight by distributing it evenly.ADR said:not this oneit would be a bit heavier but not that expensive
"- on my blade they act a little too independantly (I either need to stiffen the blade beneath the footpockets or cast some more material between them so they act in a more intergrated way. stiffening the blade would reduce the blade performance so I'll probably do the lattter which will be more difficult and more expensive."
Andy; Does this mean that the blade is softer than the footpocket and the footpockets is limiting the blades movement??
What glue do you use?
Check www.nordicapnea.com/fins.html
Andy; Does this mean that the blade is softer than the footpocket and the footpockets is limiting the blades movement??
What glue do you use?
Check www.nordicapnea.com/fins.html
Do you have an Aqualung/Technisub Sphera by chance to compare it with? You should compare your mask with the BEST mask in production, not the minima.goldie said:
You are definitely on the disadvantages of the sphera, but:goldie said:
Most people's brains get acustomed to the distortion pretty fast - though I didn't notice any spearfishers (where accuracy of vision is more crucial) commenting about that.
The sphera has MUCH better field of view/volume ratio than the minima (in my opinion, I had both).
The minima is more known to leak than the sphera.
I had some fogging problems with the sphera, now they seem to have gone, I'm not sure why is that.
The sphera is probably the mask that you can take the deepest without compensating due to it's flexibility, Eric F has checked a few masks and the sphera out-performed the rest.
The lenses do seem to scratch spontaneously so it's life span is shorter than most masks I guess. I still feel that the next mask I'll own will be a Sphera (or maybe one of yours.
).I'll see if I have a measuring cup and might measure the sphera sometime, I don't have my minima anymore to compare it on my face though. I guess that the lower figures of the sphera are the correct ones.
Very nicely done and well thought-out. I'd love to try one!
(my guess is upward vis on that mask is quite good - it appears the frame would rest right against the forehead, or very close - which is key to good upward vis. There is also alot of lense above the brow ridge - which is the effective limit of upward vision anyway - I doubt much would be gained by angling the lenses up - and you'd see an increase in volume. - I also think that color would be quite stealthy. It also looks like downward vis is nice and peak peripheral vision is placed at about the right level with the eyes normal angle when freediving)
Omer Alien; watch out!
(my guess is upward vis on that mask is quite good - it appears the frame would rest right against the forehead, or very close - which is key to good upward vis. There is also alot of lense above the brow ridge - which is the effective limit of upward vision anyway - I doubt much would be gained by angling the lenses up - and you'd see an increase in volume. - I also think that color would be quite stealthy. It also looks like downward vis is nice and peak peripheral vision is placed at about the right level with the eyes normal angle when freediving
)Omer Alien; watch out!
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Goldie,
Keep in mind during your mask production operation that the MOST important factor is not the volume, but the compressibility.
The sphera can be taken to a depth of up to 40m without equalizing it, because of its extreme compressibility.
The minima, on the other hand, cannot be taken further than 10-11m without pain on the face.
As a result, one wastes far less air equalizing the sphera, and also the sphera can be taken far beyond one's normal equalizing limit, due to the fact there is no need to equalize the mask past a certain depth.
Keep in mind during your mask production operation that the MOST important factor is not the volume, but the compressibility.
The sphera can be taken to a depth of up to 40m without equalizing it, because of its extreme compressibility.
The minima, on the other hand, cannot be taken further than 10-11m without pain on the face.
As a result, one wastes far less air equalizing the sphera, and also the sphera can be taken far beyond one's normal equalizing limit, due to the fact there is no need to equalize the mask past a certain depth.
Good point about compressibility. I've noticed this lacking in the cressi masks I've used - I don't dive to tremendous depths so I would never challenge something like a sphera - but on the matrix there is really very little to compress - primarily the temples and nose pocket. Very little air is needed - but you do have to start putting it in fairly quickly depth-wise.
Omer seems much better in terms of compressibility - I haven't tried their excite mask but they say it compresses to half it's surface volume or therebouts - moving the lenses in toward the eyes for better peripheral vision as well.
It's an interesting aspect of mask design - initial volume vs. compressibility.
Omer seems much better in terms of compressibility - I haven't tried their excite mask but they say it compresses to half it's surface volume or therebouts - moving the lenses in toward the eyes for better peripheral vision as well.
It's an interesting aspect of mask design - initial volume vs. compressibility.
Yes this is an interesting aspect that I havn't really thought much about... my guess is that it is serendipitous design aspect of the "sphera". I'm wondering about deliberately designing this into a mask, you could mould the skirt with collapsable bladders... but where would this lead? now that AIDA have relaxed the rules on masks, it could get a bit out of hand...!
I've been busy on my next mask, hoping to have it in the water on the weekend.
I've been busy on my next mask, hoping to have it in the water on the weekend.