"Quick" change CO2 not always that quick, low velocity out of box, lack of upgrades
Overall I am happy with my two Deltas, but with this review I will list both positive and negative points I have come across. If looks were everything, you'd probably never have the need for another sidearm. The sticky grips which come stock are very comfortable compared to the grips on the Core ZX/Zeus markers, although these can easily be changed. The marker is built well, and feels sturdy in the hand. Accuracy is pretty tight - at the maxed out factory velocity(without the upgraded Spyder mainspring) shots were dead on at 30 feet using RPS Super Swirl paint. After increasing the velocity through a mainspring upgrade, accuracy increases quite a bit at longer distances. Thoroughly cleaning after a break is going to take about as much time as any other sidearm - removal of the rear plug pin, pulling out the bolt assembly. Thankfully, I have not needed to disassemble due to a chop, since I have had none so far.
The Delta uses a clamp to lock the CO2 cartridge in place instead of a threaded cap. It also has a plate and screw to make adjustments to the clamp's fit on the cartridge. This quick change CO2 feature would work out great if all CO2 cartridges were the same exact length. Unfortunately, in my experience they are not. I am going to try some different brands, but Copperhead CO2's have a slight gap between the neck and the top cap of the cartridge which ranges anywhere from near flush, to about 1/24 of an inch. This doesn't seem like much, but if you adjust the plate for good seal with a cartridge with no gap, you may have problems clamping it when using one with a 1/24" gap. On the other hand, if you adjust the plate to seal well with a cartridge with a 1/24" gap, you may not get a tight enough seal when using one with no gap. It might take you wasting a few cartridges to dial in the "sweet spot", and even now I still have trouble sometimes clamping down ones with larger gaps. As a tip to help remedy this, either A: sort your cartridges beforehand, B: see if you can find a brand which does not differ in length, or C: adjust the plate so that when you press the clamp snug against the cartridge right before it punctures, the clamp is pointing down at about a 45 degree angle. If it is pointing too high or too low, adjust the plate, then clamp it down. Once I found the sweet spot, I made a etched a small reference line near the base of the clamp so that I know exactly where it needs to be to create a tight seal and still be able to clamp it down. You should all know this, but always lube and clean your marker before play, especially the small CO2 O-ring on this marker!
My other issue with it is the velocity, or rather the lack of. Calling the company at their toll free number, a tech informed me that I shouldn't expect to get more than 160 - 180fps for this, or any other sidearm. I informed him that my Zeus got between 250 and 350 out of the box, which he had little response to, other than asking if that was using standard 12 grams. He recommended that I "stretch the mainspring" if I want a higher velocity. I would recommend getting yourself a compatible Spyder mainspring and using that instead. There are several kits to be found which contain several different springs of varied tensions. This should get your velocity up to a more acceptable range. Stock, with the velocity screw set to the highest position, I was getting approximately 30 - 35 rounds per cartridge. Obviously, after swapping a higher tension Spyder spring into it, you are going to get a higher velocity, at the expense of less rounds per cartridge.
The grip frame of the Delta 68 has two screws for adding a bottomline adapter, yet strangely I can not find any type of bottomline system for this marker ANYWHERE. Anyone who knows of one, please send me a quick message. If you are into accessorizing, don't expect a good number of places to mount. You cannot mount a rail to the underside of the barrel, since that is where the CO2 loads in. The clips of course are completely round though, so you could probably attach some type of universal mount to it, which would be the base for your laser sight, etc.
I like this marker, and since I have pretty much worked out the issues I originally had with it, I have few complaints. If you are someone who doesn't want to tinker around at all, and who wants a marker that is ready for serious play right out of the box, I might not recommend the Delta. You may be better off grabbing yourself a Core ZX/Zeus, and clipping a few rings off the mainspring(if need be) to get it down to a safer velocity.
In general, a great marker that has some weaknesses which thankfully, can be worked around.
8 out of 10
Last edited on Saturday, January 10th, 2004 at 12:25 pm PST
I'm tied between Core ZX/Zeus (pretty much the same) & this Delta .68....
You left me hanging on the fence because you've used both, so I'll try to help you help me...
I've read the arguments, Delta Co2 adjustment not easy (but your 45degree fix sounds logical as I do the same on my air guns), Core ZX (paintballonline.com) CRAP support/service & a few ZX duds (leaks), etc. (seems both manufacturers have a few duds/friday guns/lemons), etc., etc...
If both came HOT out of the box @ say 200-250FPS (by the way what was the best FPS on the Delta you achieved?) ready to rock no adjustments, which one would you chose for a trusty side-arm, back-up (last man standing, you have to use your side-arm as primary down, win is down to you & all that)?
OR if this helps, but I'm not letting you off the hook as I want to know which one (above scenario ;): Marks out of 10 (after all fine tuning done) Core ZX -v- Delta .68: -
I would like an answer also to LAUGH... struggling here with the same decision. one plus to the zeus is the sight rail (standard) on the side. heard the delta doesnt give you many options. would love a bottom mount sightrail so you can holster. doesnt sound like you get that from either.