Would the 0.17 build be ok on my Voopoo drag with 2 Samsung 30q's,
Yeah it would be absolutely fine on a regulated device.
As far as on a mech goes it's not entirely black and white.
Batteries basically have two different discharge ratings, continuous and pulse.
Continuous rating is the rating the battery can safely discharge at if it is discharging continuously, when you are discharging a battery a chemical reaction is taking place inside the cell, that reaction creates electrical power and it also creates heat, too much can cause a failure a thermal runaway and it will vent, the continuous rating on the 30Q is 15A.
The pulse rating is the safe rating the battery can be discharged at in pulses meaning firing.stopping,firing again, because there are periods where the battery isn't being discharged it has time to cool down a little and the chemical reaction is stopping so you can discharge at higher Amp levels without a catastrophic failure.
The problem is there's no universal standard of what a pulse is each manufacturer seems to have different criteria for what a pulse is, that and pushing the battery like that will reduce the charge capacity of the battery and probably reduce the batteries life cycle too.
It's really a matter of levels of risk.
1:If you stay within the continuous rating the risk of venting is low, you can't eliminate the risk entirely because you can't eliminate the possibility of a manufacturing fault with the battery.
2:If you stay within the pulse rating the risk increases.
3:If you go over the pulse rating then failure is pretty much guaranteed.
At 0.17ohm the 30Q probably won't vent unless you are vaping non stop like a train but you are in number 2 territory.
I like vaping but personally i try and stay in number 1 territory if possible and keep it as safe as humanly possible.
