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airguns: Sporasub One Air 2012!!!

Thread Status: Hello , There was no answer in this thread for more than 60 days.
It can take a long time to get an up-to-date response or contact with relevant users.
tromic said:
I suppose no one could see difference in power if sealing is good. What you might see is how often you have to change the piston and/or the shock absorber.
Click to expand...

That make sence.
Most of my shooting is on
Scuba. I'm going to do some
Test in the pool when it warms up.
I guess I can set a target and see witch
Way has more power loading above water or
Below.
 
Yup, bmwgsboy is right. I also asked OmerSub directly about whether one had to reload out of water and they said in theory it is better but in practical terms they don't expect trouble. I had to ask, because if I end up having corrosion in the air chambers I wanted to make sure, I would not get told, I had operated it incorrectly.

Also, I would def not put an Evo-Air on an already dry-barreled gun. These systems seem to all be pretty good at what they do and they are such a huge improvement over wet barrels already. If one system is a few percent better, I am not sure I would notice. I'd stay with the easier handling of the STC rather than shell out money for something you don't need.
Also, I loaded both in and out of water and I could not tell a difference at all.

Best,
David
 
In questo video si puo' vedere un One Air ed il suo funzionamento merita preoccupanti riflessioni.

<iframe width="560" height="315" src="http://www.youtube.com/embed/ZBsMNhqHMsc" frameborder="0" allowfullscreen></iframe>
 
In this video you can 'see an Air One and its operation is worth worrying thoughts

[ame=http://youtu.be/ZBsMNhqHMsc]MINI0080 - YouTube[/ame]
 
Sub Fireman said:
In this video you can 'see an Air One and its operation is worth worrying thoughts

MINI0080 - YouTube
Click to expand...

Very interesting.
I can only say, that I have not had any issues shooting mine as you can see in the video posted earlier.
Also, I think I have seen some of the amazing guns you have made on the pescasub forum and I hope you are doing this to be helpful but beware that posting a video like this of a competing product to yours might be taken as a bit wrong.
But thanks again, I just wish someone could explain what the issue is?


Best,
David
 
Last edited:
The video I posted on the forum is for all those who are preparing their weapons for pescasub and it seems appropriate that it be informed in mind that this is just the latest video but that many others have pointed out the same malfunction.

I think that everyone will know give their right considerations.
 
And for all of us who unfortunately can not read Italian, has anyone on the Italian forum found out what the reason behind this is?
Maybe it is the piston, that is now being changed to a new version?

As said, I have had no issues what so ever so far with the gun (except having to remember to load line release first).

But just to be clear, you are the one who designed the Evo-Air, right? I think I saw a post from you a few days ago about that and I actually wanted to ask you a few questions in regards to its use.
I have both a One Air and a Seac with Evo Air.

Best,
David
 
Last edited:


OK, so I hope you don't mind me asking a few questions about the Evo-Air as I have one mounted on my Seac Hunter 90.
Do you agree with Tomislav on the added first step of the loading procedure (loosening muzzle before inserting spear)? I did that and I could tell that a small jet of water and bubbles came out when I inserted the spear into the piston. After that, I closed the muzzle, loaded and then opened the muzzle to fire.
 
.Tomi's right ... I said this is the most 'three years ago' but the problem continues to persist in spite of the Technical Directors of asserting this product you can allow the introduction of water inside thus creating a power reduction for shots den is totally impossible because contrary to the principles of a Flying Vacuum.

David as I stated above that you can ask me the information you care about.
 

My question is about the loading procedure of the Evo-Air (I have one myself).
I think the manual says:
1. Tighten muzzle
2. Insert and load spear
3. Loosen muzzle and shoot

Tomi had an idea to add one step to the loading of the Evo Air to make sure very little water could be trapped in the muzzle. His procedure was like this:
1. Keep muzzle open
2. Insert spear into piston (do not load)
3. Then tighten muzzle and load spear
4. Loosen muzzle and shoot

As said, I went with Tomi's idea most of the times, I loaded my Evo Air Seac and when I inserted the spear, I noticed a small jet of water and bubbles coming out of the muzzle. I tend to think that's good because that means water evacuates the muzzle.

What are your thoughts? Is the extra step a good idea? It doesn't take much longer as muzzle is already open from the previous firing.

Best,
David
 
The Evo-Air is designed to operate as yourself 'described in the first part .... Tomi believes in having to escape the pocchissima water from the inside during loading, it is irrelevant.

It is however provvedudo an update that there are the most 'minimum quantity' of water during the loading denominating Evo-Silent Air Damper and so also Tomi will be 'happy.

Surely know this Video ..

[ame=http://vimeo.com/15453746]Evo-Air by Seatec on Vimeo[/ame]
 








Thank David
What was the point in sub fireman video??
 

What was the malfunction???
Bad piston, bad seal, user error???
 
The problem with the videos is due to not keeping the vacuum resulting Flooding. but this problem affects the already too long .... I prefer not to go further in the Explanation
 
I think it is better to have a little fun with a 50Ino

[ame=http://youtu.be/CvGWzsmg72Q]Pierino il 50ino - YouTube[/ame]
 
Sub Fireman said:
The problem with the videos is due to not keeping the vacuum resulting Flooding. but this problem affects the already too long .... I prefer not to go further in the Explanation
Click to expand...

So your saying stc x-power is no good
Yours is better????
So I guess the engineers at sporasub
Picked x-power because it would fail????
Or could be just a bad o ring??
It does happen.
 
bmwgsboy said:
Thank David
What was the point in sub fireman video??
Click to expand...

That I am still not entirely sure of.

I sense from the Italian forum, that Sub Fireman is extremely respected and obviously knows a lot about pneumatic guns. Actually, more than most. Also, I have seen some truly amazing guns he has built (I think).
And perhaps it is a "forum cultural" thing, but I have not yet in the limited time I have spent on DeeperBlue seen any examples of a designer of one product being the one to point out alleged faults of a competing product.
He posts one video of what seems to be a faulty One Air and then posts a promo video about his own product, perhaps even two videos if the last one is a Evo-Air muzzled gun as well.
Again, I hope he is just doing it to be helpful and of course the circle of people who really know this stuff is not huge and some of them are bound to actually have designed some of these solutions, but it stills just feels like there should be other ways to address this.
I don't recall Tomi ever trashing a competing product. He might say he feels his is a better option but then he will go on to explain in technical details why he feels that is. What I remember is him and his son going to great lengths to tell me what other viable options were on the market.

I don't think any of the products are 100% perfect (I have only tried two), but I like both. I like the STC design (One Air) so far and have had no problems with the muzzle or shooting power at all. And I like the Evo-Air despite it being more cumbersome and I suspect much, much harder to load (I was surprised how hard my gun is to load at 17 bars and I am still not sure whether 13mm/40mm guns are just that much harder than One Airs or if it is truly the increased friction from the o-ring in the Evo-Air design).
OmerSub has taken a lot of flack for the delays and issues with the One Air. Some of it justified and maybe this is as well, maybe not, we just don't know. What I do know, is that it would be nice to hear any critique from users and not from the competing company as that makes all sorts of alarm bells go off for me - and not in regards to the One Air...

With regards,
David
 
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