Hi Folks, looking to dig a little deeper with a few items.
I'm returning to airsoft after a ten year hiatus. Never really got into it in the first place, got sucked into paintball instead, first with a basic electro marker, then into the wild and crazy experience of playing pump action paintball while surrounded by electros and speedballers. (My pump has a forgrip and folding stock, btw). Anyway, back to airsoft, got some techy questions.
My gun manual (Umarex UMP H&K branded 'competition series') recommends "an 8.4v 1400mah battery minimum." I wanted to figure out what equivalent 7.4 lipo would be, in terms of current, but I felt I did not have enough information. Researching a little further, I found that a 8.4v 1400mah NIMH battery should produce about 16.8amps at max capacity. (source:
https://infectedairsoft.wordpress.co...teries-part-1/)
So I ordered a 8.4v 1600mah battery, and for kicks and giggles, a 9.6v 1600mah second batter with a c rating of 16, which if I calculated correctly, should give up to 25amps at max capacity, plenty to power any average AEG up to its full potential.
Now, I am concerned about wear and tear. So the question is, if I want longevity on my internals, should the 9.6v battery be just for those occasional rounds when I want a little more zing, or is it safe to be the daily driver? A little more info: given my current life circumstances I'm likely to normally only play once or twice a month a couple hours each time, or up to once a week MAX.
For this I need a little more technical information on the specs of the gun itself, which does not seem to be readily available. Anyone have knowledge of this, or know a way to get technical/repair manuals for guns for cheap?
First, it would be helpful to know the actually current the gun prefers. Are my borrowed calculations correct? ie. the gun needs at minimum 16.8amps to avoid problems? If so, what is the maximum recommended spec, ie the preferred current levels? (this will be useful info if I ever want to go Lipo, and to figure out how much I may be stressing the gun running this 9.6v battery). However, I also read that mini NIMH type airsoft batteries (the UMP uses a mini stick battery) do not operate at the max capacity of full size NIMH batteries. So theoretically my 9.6v stick could be performing closer to the optimal power for the gun (I suppose?) This, however, presumes the manufacturer did not design the gun around a lower power rating...(need more information).
Going deeper, does anyone know about the internals on the gun? Is the gearbox built well enough to handle the max power of the motor (given the 9.6v battery I picked up). I understand there are always trade-offs in terms of longevity when you start firing more ammo more rapidly- however I am most interested in trigger response, not ROF. In paintball I played pump, mostly, so I expect to be not much of a spray and pray type in airsoft either.
Finally, and more importantly, I know all good internals will still come to an end. Are repairs or upgrades so costly that it is worth worrying about it this much?
Thanks for any (thoughtful) posts. Very glad to have a newb question forum here.