Posts by Dan

I'll move it later.

Quote from Wishihadgills

Especially, some of the top freedivers who are known to wear footpockets a couple sizes to small so that they get maximum energy transfer, sacrificing comfort for efficiency.

Ah! reminiscent of the fine Chinese tradition of foot binding

I do prefer a snugly fitting footpocket over a loose one myself, but a couple of sizes smaller.. come'on.

Our ankle and foot joints are not designed for finning. There has to be some give and energy dispersion under the foot. A solid blade running right along the sole will not allow that. And BTW fish tails have tendons.

I don't get it, what happened?

Welcome Derek.

This thread http://spearfishing.world/free…-cable-shooting-line.html see Phil's post.

If you're taking about making a loop in cable used as shooting line then you should braid it and crimp once.

I don't know if your question is directed to me, but IMO a 20 degrees toe angle is ideal. By the time you get to 30 degrees like the DiveR blades, you will feel your hamstrings get tired because the fins are now working more on the up kick. It's the down kick where we naturally generate power/propulsion, the up kick is a waste of energy..

Quote from Wishihadgills

It would be a fine balance and could be difficult to offer varying stiffnesses but it should be possible. Expensive but possible.

There's nothing more expensive about it than manufacturing conventional carbon or fiberglass blades. You just have to figure out the correct layup. As it is the back edge of the blade goes back pretty far towards the heel. I have a fiberglass blade here that would take the stress. It's not a big deal to install it in a foopocket with the tendons cut off. I can do it if you want to try it. I guarantee you will not like the feeling of the blade trying to pull away from your foot right under the toes, which is what will happen when it's stiff enough to handle the stress without the support of the tendons.

Then the carbon blade would be too stiff. Remember what it's like to kick with a fin that's even a little too stiff?

Quote from Wishihadgills

If you were to have just one piece of carbon and another material than anything with a lower elasticity would "slow" the carbon down and prevent maximum energy storage.

Also most people are not aware that even the color (camo) patterns some manufacturers are now adding to their carbon blades negatively affect the performance. Less so when it's just paint, more when it's a separate layer. General rule of thumb is stay away from carbon blades that don't display the conventional carbon pattern.

Quote from Wishihadgills

Sporasub tried to exaggerate this concept with one of its fins (the one that looks like a shoe) but they made a critical error in blade material. The plastic they chose simply couldnt hold up.

Actually the plastic blades are the only ones that could hold up for any length of time. or I should say when they break they won't break the bank. I'm going to repost from another thread:

The function of the tendons is to give the carbon blade support, and evenly distribute the stress of bending away from the footpocket. When the tendons are too soft and provide no support, the blade will bend most at one specific spot an inch or two past the foopocket, then there's a bigger possibility of it breaking in that spot. That's why this design from Sporasub has never been used for anything but plastic blades.

The C4 footpockets may seem to be a good idea because they appear to lack tendons completely. On close examination that huge flap in front of the C4 footpockets weighs just as much as conventional tendons and provides the same support.

http://www.youtube.com/watch?v=tW_GlTP_VzI

Xan, your idea about a full length blade sounds nice in theory, but the reality is that without tendons it will have the same flaw as the Sporasub running shoe fin, there will be too much stress at one point without tendons and the blade will break. I suspect it would also put a lot more stress on the ankles. The job of the footpocket and tendons is to dissipate just the right amount of energy, to not overwork the blade and ankles.

http://spearfishing.world/gulf…r-fl-any-other-state.html

fishon, have you separated the blade from the footpocket? If you do you will see that the back edge of the blade is cut to match the "tab" inside the salvimar footpocket. This tab has no practical advantage, and doesn't allow the use of any blade that wasn't specifically designed for the salvimar footpockets. Of course you could say that you wouldn't want to use anything other than the carbonio gft blades. But I don't like the idea of needlessly chopping up the back edge of a carbon blade. If the other points can be debated and attributed to personal preference or lack of experience with other footpockets, this last one can't and it's a decisive point for me.

In addition at the risk of starting a controversy and maybe stepping on a few toes, I'll say the following. I was interested in salvimar products because of their unique appearance and availability, and examined their products first hand. From footpockets to shafts to spearguns, I find salvimar equipment designed to be eye catching and different, and completely over the top, reminding me of the haute couture concept in fashion; crazy looking shit that no average person would actually wear. Experienced people in the dive gear industry who's opinion I respect share my conclusion. But in the end everything's a personal choice, so I'm sure someone will really dig salvimar equipment for spearfishing. If you're a practical person like me however, take my advice and stay away from it.

I read somewhere that freezing the fish in water gives good results.

fishon, which blades are you using with your salvimar f/p, and what stiffness are the blades?

I don't have them but I'm curious what kind of swedges you're looking for, and what you use them for?

Thanks for the props guys

Judah, it may be because you have the larger shoulder harness that you're not using it. These shoulder straps are way smaller and easily fit inside the hatch of the board, so there's no concern about where to leave them when you hit the water. I leave them inside the board permanently, so they're always available if the walk back to the launching point becomes too difficult carrying the board by the handle. After the dive it's usually heavier than when I started.

All straps have been taken.

Welcome to the forum Petros.

I understand it gets very cold in the desert at night regularly. Here's a desert snow pic.

This is just attan coming back to the forum with a different user name for the 20th time. My guess is he's hoping to create a "Persistent poachers" type controversy for Pursuit gear. Nice vid.

Nice pics.

nah ~`~`~`~` it, I'm not that interested in your pics.

Welcome to the forum. Picture posting tutorial here http://spearfishing.world/foru…ure-posting-tutorial.html