rotor92000

I'm not sure the comment about the drop in voltage due to the lower C is entirely correct. The voltage should remain around 11.1v unless the current draw from the motor exceeds the capability of the battery, at that point I would expect to see some sag in the voltage and RPM until the trigger is released. The missing part of the jigsaw now seems to be the specfications of the motors. What input do they require to achive a given RPM? There seems to be a lack of actual specifications on any of the websites I've been able to find. If you were buying a motor for a drone, look at the specifications you can find: I'm probably overthinking all this but it's just a very basic electrical circuit and therefore, if you have all the specs, it should be easy enough to compare apples with apples. Now I get that once you move from the theoretical to the real world, there are a bunch of variables that you can't calculate for but an understanding of the theory is what I'm struggling with lol I should probably just shut up lmao Yep, you make some good points there. Mainly that if we knew what the motor required, we could better match a battery to a motor with less of 'finger in the air' that seem to have to do. I guess the easiest thing to do it just get a load of batteries and try them but "there should be a better way!" LOL Thanks for your input everyone.

Hmm Once I found out how to calculate the discarge from the battery, ohm's law led me to this... For the 7.4v 30C battery, we can say for a 1000mAh capacity (for ease of calculation) the battery is capable of discharging 30amps. The power to the motor would be 222 watts (watts as a unit doesn't really mean much to us in airsoft but it's easy to see the difference between the two examples). Now if we have an 11.1v 15C battery with the same 1000mAh capacity, it's capable of discharging 15amps. Due to the higher voltage but much lower current, we can calculate that the motor would recieve 166.5 watts. The higher the power, the faster the motor will turn. Therefore, in my calculation, the 7.4v 30C should turn the motor faster and produce a higher rate of fire. There must be some nuance I'm missing or am I simply misunderstanding something?

Disclaimer: The 'C' values stated in this post are simply hypothetical in an attemp to explain the thinking behind the question. If you increase your voltage from 7.4v to 11.1v, your ROF increases. If you change your battery's C rating from say 15C to 30C, your ROF could also increase by some degree. So, here's the question(s)... What's the difference in performance between, let's say 7.4v 30C and an 11.1v 15C? Is one easier on the motor than the other? You could assume that if, hypothetically, the ROF were the same, the load on the motor must also be the same and therefore, technically no different? Anyone got some actual pratical experince on this one? Cheers all!