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nativepaul · 08:54 PM

you could use the .58Amp one direct of 7.2 like you tried, it will draw .58Ax7.2V/12V=.348Amps, that would take 4.2AH/.348A=12hours to flatten a 4200mah pack you would be hard pushed to notice a difference in runtime, if you get 10min runs at the moment that's 4.2AHx60=252AmpMinutes /10Minutes=25.2Amps average, add .348A for the fan and it would go down to 25.2A+.348A=25.548A, 252AmpMinutes/25.548A=9.86 Minutes.

EDIT: everyone else beat me to it while I was doing the maths, but hopefully the equasions will be of some help to you working out amp draws or runtimes in the future.

	(#5)
nativepaul RC-Monster Aluminum Offline Posts: 522 Join Date: Jan 2007 Location: Sussex, England.	10.25.2007, 08:50 PM you could use the .58Amp one direct of 7.2 like you tried, it will draw .58Ax7.2V/12V=.348Amps, that would take 4.2AH/.348A=12hours to flatten a 4200mah pack you would be hard pushed to notice a difference in runtime, if you get 10min runs at the moment that's 4.2AHx60=252AmpMinutes /10Minutes=25.2Amps average, add .348A for the fan and it would go down to 25.2A+.348A=25.548A, 252AmpMinutes/25.548A=9.86 Minutes. EDIT: everyone else beat me to it while I was doing the maths, but hopefully the equasions will be of some help to you working out amp draws or runtimes in the future. Hot Bodies Lightning 2 Pro carbon, Mega 22/30/2, MMM, 4s3-5Ah. Tamiya F201 carbon, Mamba 7700, MM, 2s A123 2.3ah. Xray XT8, 1518, MMM, 4s5Ah. Lots of boats. fastelectrics.net Last edited by nativepaul; 10.25.2007 at 08:54 PM.