Post by BroJames on Jan 11, 2008 20:04:06 GMT -5
As posted in this thread:
bremenhaus.proboards105.com/index.cgi?board=reviewnimh&action=display&thread=1200098857
BHe-Bremen 9.6v 2000mAh AA Chaku Type, 12C
430.9FPS, 923RPM, 15.4RPS
Intellect Blue 9.6v 2000mAh AA Chaku Type, 5C
428.7FPS, 819RPM, 13.6RPS
Why is the ROF of the 3050mAh Bigh Chaku (1262RPM, 21.0RPS) almost the same as the 1250mAh Chaku Type LiPoly (1195RPM 19.9RPS)?
There is a limit to the advantage of the C Factor. Like in aircon, if you change the breaker from 15Amp to 100amp, it will only provide you the (additional) available current on standby. How your motor will consume the available current depends on your setup. If the torque of the motor reached its limit per given volt and given current, the only way to increase ROF is to increase voltage. Some helicopter batteries are 4.4-4.5v at full charge versus 4.2v for other LiPolies. You need a high performance charger which have charging voltage upto 4.5v but have very good full charge detection to avoid over charging that may destroy the cell. Most charger only charge at 4.2v. Simple charger stops at 4.1v because equilibrium is reached. The 0.1v is eaten up by internal resistance.
In other words, 13C appears to be the upper discharge rate at 11.1v or 4.2v per cell (full charge). 12-13C is also the discharge rate most manufactureres (and their engineers) recommend for airsoft. To increase the ROF effect from higher C a higher voltage is required. I would suspect that
From a layman's point of view, the following is my guide showing the relationship between voltage, "C", ROF in airsoft guns. Data may not be 100% correct but I believe it gives a very good bird's eye view of how increased voltage affects discharge rates("C") to achieve increased ROF in airsoft guns.
4.2v 12-14C and 20-21RPS (estimated upper range/limit)
4.3v 17-18C and 25-28RPS (estimated upper range/limit)
4.4v 20-22C and 30-35RPS (estimated upper range/limit)
4.5v 25-30C ? ? ?
bremenhaus.proboards105.com/index.cgi?board=reviewnimh&action=display&thread=1200098857
BHe-Bremen 9.6v 2000mAh AA Chaku Type, 12C
430.9FPS, 923RPM, 15.4RPS
Intellect Blue 9.6v 2000mAh AA Chaku Type, 5C
428.7FPS, 819RPM, 13.6RPS
Why is the ROF of the 3050mAh Bigh Chaku (1262RPM, 21.0RPS) almost the same as the 1250mAh Chaku Type LiPoly (1195RPM 19.9RPS)?
There is a limit to the advantage of the C Factor. Like in aircon, if you change the breaker from 15Amp to 100amp, it will only provide you the (additional) available current on standby. How your motor will consume the available current depends on your setup. If the torque of the motor reached its limit per given volt and given current, the only way to increase ROF is to increase voltage. Some helicopter batteries are 4.4-4.5v at full charge versus 4.2v for other LiPolies. You need a high performance charger which have charging voltage upto 4.5v but have very good full charge detection to avoid over charging that may destroy the cell. Most charger only charge at 4.2v. Simple charger stops at 4.1v because equilibrium is reached. The 0.1v is eaten up by internal resistance.
In other words, 13C appears to be the upper discharge rate at 11.1v or 4.2v per cell (full charge). 12-13C is also the discharge rate most manufactureres (and their engineers) recommend for airsoft. To increase the ROF effect from higher C a higher voltage is required. I would suspect that
From a layman's point of view, the following is my guide showing the relationship between voltage, "C", ROF in airsoft guns. Data may not be 100% correct but I believe it gives a very good bird's eye view of how increased voltage affects discharge rates("C") to achieve increased ROF in airsoft guns.
4.2v 12-14C and 20-21RPS (estimated upper range/limit)
4.3v 17-18C and 25-28RPS (estimated upper range/limit)
4.4v 20-22C and 30-35RPS (estimated upper range/limit)
4.5v 25-30C ? ? ?