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I had a closer look and saw that it was the reflection on the side of the outer barrel, that is why I amended my post, however you have replied at about the same time as I changed it.Спасибо за оценку!
Тяга спуска, на всех ружьях ставится с низу...
Поиск универсальной рукоятки, всё ещё продолжается...
The design certainly suits a very slim pneumatic speargun as there is no need to accommodate anything inside it except the spear shaft. It should be a quiet shooter as only the spear tail cap striking the back of the muzzle when it parts company with the spear will make any noise.I've just looked at the pictures and drawings of Vlanik. I like it! Nice and simple solutions. Interesting solution for line release too.:friday
I suppose it is on about 50 bars to get 25 kg loading effort.The design certainly suits a very slim pneumatic speargun as there is no need to accommodate anything inside it except the spear shaft. It should be a quiet shooter as only the spear tail cap striking the back of the muzzle when it parts company with the spear will make any noise.
According to the Vlanik Excel spreadsheet the pressure is 49.74 atm, so about 50 Bar as you say. I was curious about the compression ratio of such a small internal diameter reservoir speargun. This can be easily calculated if we assume that the working course of the spear is the full length of the air reservoir, i.e. the spear tail cap touches the rear wall of the reservoir when the gun is cocked so that we can ignore any volume of air sitting immediately behind the spear tail. The compression ratio is given by the air volume of the reservoir before introducing the spear divided by the final air volume after the spear is latched in the gun. As this is a ratio of volumes we can eliminate the value of pi and the reservoir and internally projecting spear lengths from the calculation as they appear in both the top and bottom lines of the resultant fraction and can thus be cancelled out.I suppose it is on about 50 bars to get 25 kg loading effort.
Well Vlanik says a lot has changed in 6 years and the guns now float, so the metal bulkhead parts must have changed to plastic. Looking at the latest photos we can see these parts much better. The guns always had oil inside for lubrication, that is also mentioned on his web-site. Now that the guns float after spear discharge the chance of picking up grit is greatly reduced. As Vlanik says, you are asking about info from people who do not have his guns, but I have been hoping that he would tell us more himself. Looks like he is not continuing here judging by his last post, but I hope that he reconsiders this decision. As to the tail cap falling off inside the gun I doubt that is a problem as there was a friction device holding it on in the past and there appears to be some items on the tang at the rear of the shaft in these latest photos. Hopefully Vlanik might show us a close-up of the shaft tail parts. I wonder what the prices are like, could be an interesting gun to try out.Thanks Peter! Is there a possibility for shaft tail cap to fall down (be separated) from the shaft, before or during the shooting? Is there any lubrication necessary to prevent damage of O-ring in the muzzle.