Daystate MK4 aprasas. Gal kas galetu isverst paryskintus sakinius - ar as teisingai suprantu, kad sis sautuvas apart spaudimo daviklio turi temperaturos davikli.... ir kompensuoja emperaturinius pokycius?
To clear up the confusion, MCT is Mapped Compensated Technology and MVT is Mapped Velocity feed-forward Technology.
The Mk4 is just MCT.
The Mk4 is a lot different compared to the old Mk3RT:
New Minnelli oiled stock.
Six point breech fixing rather than four point
New software with MCT compensation, auto power-down to conserve battery capacity, high accuracy pressure sensing (better than 2% with 0.25% linearity), low pressure warning (rather than shot count warning) and vernier power adjustment.
The electronics are now powered by a pluggable rechargeable battery that can easily be changed.
A new valve body and Harper LTC (Linear Transfer Characteristic) valve.
Breech probe reducer to prevent pellets falling back into the breech.
Shorter air cylinder (shortened by 2 inches), bringing the balance in towards the shoulder.
Fully shrouded 16 3/4" barrel with integrated silencer.
Some of these improvements were introduced in the later Mk3s, but the sum total gives an entirely different feel to the gun. The most significant changes are the MCT system and Harper valve. This is the same valving system that Terry Doe has praised so highly and is now being introduced into the entire range of Daystate guns.
The characteristics of the MCT system is ideally suited to the introduction of the new valve, the overall result is astounding economy, silence and a still firing cycle. The lock time has been reduced even further much to my surprise. Not one shooter that has tried the gun can detect any noticeable muzzle flip.
The Mk4 will operate from at least 220BAR down to 90BAR at about 0.82BAR per shot, this will produce over 150 shots. Typically the gun will operate from 250BAR down to 85BAR (not guaranteed) and will produce a huge 200 shot capacity which is beginning to rival an Air Wolf!
There is no power curve over the gun's operating range with a variation of +/-10FPS over 150 shots using standard unsorted pellets. I would expect (much) better than +/-7FPS using weighed, sized and lubricated pellets.
Shooting the gun has revealed the following:
In still air conditions a 12.5mm kill zone at 40 yards is an easy target with a 90% plus hit rate off a bench rest. However the hit rate was reduced somewhat when the gun reached a pressure of about 100BAR. I do believe that this is caused by the noticeable increase in muzzle blast associated with lower pressure operation.
The gun does not require a silencer at all for almost all situations, but fitting an additional silencer makes the gun STUPIDLY quiet. No evidence of point-of-aim shift was noticed with or without silencer, or with different types of silencer. It was remarkable to note the the difference in muzzle blast was indiscernible when a Daystate mini-silencer was interchanged with a full sized Airstream silencer.
I attribute the lack of POI shift when using silencers caused by three main reasons. The rigid barrel mounting afforded by the 6 point breech fixings, the longitudinal stiffness provided by the bull barrel shroud and significant blast reduction which is a characteristic of the new Harper valve (the blast bouncing off the internals of the silencer can shift the POI).
In all the gun is very crisp to shoot and worry free when filling, care does not have to be taken with topping-up to exact pressures as the gun will automatically compensate for less than accurate fills and temperature.
Factory tests with extreme temperature variations (put into a freezer for hours, then heated with a fan heater until uncomfortable to touch) do not alter power output, indicating all is well with the MCT system with its automatic compensation.
My preproduction gun has been one of the most accurate I have shot to date, however it is early days. Consistent accuracy is the holy grail of gun design and only time will tell.
David
Nuorodos
Varžybos
