The consensus regarding the use of a vacuum seal muzzle is that it will provide some slight increase in speed and distance but since I have not used one I can not yet comment on whether this increase is worth the occasional replacement of seals, emptying water from the barrel prior to loading & other things…
Most information online is over a decade old with outdated systems using lots of anti hydrodynamic junk on the shaft.
These work fine I’m sure but they aren’t salvimar kits on Cyrano guns so we can’t truly know until we test what it will do.
Maybe Pete has some idea what it might do for the performance in general, the more recent threads suggest people do prefer to use the salvimar muzzle but I don’t see any valuable comments regarding accurate speed/distance data however they seem to continue using the sealed kit so I am inclined to find out why.
There are necessary questions perhaps someone might answer:
Does this new Salvimar muzzle allow for loading while in the water?
Does the spear tail piece being slightly larger cause the majority of the seal deterioration as it travels past the seal as the shaft leaves the muzzle during each shot?
How do people solve the issue of extra friction from the increased diameter of the shaft tail upon exiting the dry muzzle seal? Do they grind it down I wonder
Some other things,
Mares Cyrano 1.1 can utilise 30bar of pressure vs 20-25 for other brands with a wet barrel open muzzle so what is the optimal dry barrel psi without any changes to the spear tail for this particular 30bar tank?
And since I can still easily load my 70 @30 bar wet, what safe & optimal pressure limit can the Mares Cyrano function at as a wet barrel before it begins destroying the delrin piston & shock absorber with each shot?
Is that limit truly 30Bar or can I squeeze a few more Bar in without consequence?
If the tank can take 100 bar before catastrophic failure someone like me might want to test the piston durability at 33-35 bar at the expense of replacing a shock absorber & piston as long as it is safe, what could go wrong?
In testing under the same conditions the increase from 20 bar to 30 bar appeared to effect the force much more than the distance therefor it would mostly benefit penetration to have any increase in pressure above 20 Bar.
@vrokhlenko please comment on the performance differentials when you equip the new muzzle, I don’t think it’s linear with my 70 but your 90cm 1.1 SHOULD shoot approximately 4.5m (2.5 wraps) of 3 full wraps (5.4m) before experiencing spear drop off @ 20-30bar & so
If the vacuum muzzle provided even 15% increase for a 70cm gun that is an extra 50cm meaning the current 3.5m (before drop off) becomes a 4m shot with the new muzzle before the spear loses trajectory.
This is nearly 3 full line wraps of power, if it’s a 20% increase from the Salvimar kit I will reach my 3 wrap lines end with adequate power which is 13+ feet.
Likewise your 90 with a 15% increase would be an extra 67cm or something meaning 5+ metre shot if the increase is real.
Even a 10% increase would nearly be worth the trouble, benefits also be easier loading & supposed recoil reduction and maybe a lesser sound/shockwave in the water.
Let’s find out, if it’s more than 15% increase this could be a very interesting addition to the Cyrano.