Hello all!
I'm kinda confused about what hardware should be used for 1/8 racing because of amps and watts are being used and can be deliverd..
Because of the Motor being the end user the most current will be used by the motor.. (Like a light bulb will only use the wattage it is produced to use)
In this example i'm looking at a 2100kv Turnigy redcan. This motor has a peak wattage of 2100W, this corresponds to a maximal current at the rated 15V of 2100W/15V=140A (Peak current usage) This is also stated in the turnigy specs so guess this should be the truth..
Now when i'm looking at ESC specifications for 1/8th scale everyone i tolk to tells me i need a 150A ESC. I bought a Hobbywing XR8 Plus, this ESC should be capable to do 150A contant and a deliver a peak current of 950A.
(Now why would i need a ESC that can do that when the peak current will not be higher than 140A!!?!!)
But the story continues on batteries.. Most people i talk too state that i need a high mah lipo with a C discharge rating as high as possible. So i got a 7600mah 4S 75-150C lipo.. Now when i'm calculating the amps this beast can deliver i'm going nuts: 7600mah=7,6A
7,6Ax75C=570Ah while i could do perfectly with a lipo of 140A (max current of Motor): 140A/7.6A=18.4C
Why are current and wattage rates of Lipo's and ESC's so much hyped up when it seems to be completely useless? And how come ESC's and Lipo's that should be capable of delivering so much current still get warm or even catch on fire when only a fraction of their capabilitys is being used? :weird:
Sorry for my dutchy english :sweat:
I'm kinda confused about what hardware should be used for 1/8 racing because of amps and watts are being used and can be deliverd..
Because of the Motor being the end user the most current will be used by the motor.. (Like a light bulb will only use the wattage it is produced to use)
In this example i'm looking at a 2100kv Turnigy redcan. This motor has a peak wattage of 2100W, this corresponds to a maximal current at the rated 15V of 2100W/15V=140A (Peak current usage) This is also stated in the turnigy specs so guess this should be the truth..
Now when i'm looking at ESC specifications for 1/8th scale everyone i tolk to tells me i need a 150A ESC. I bought a Hobbywing XR8 Plus, this ESC should be capable to do 150A contant and a deliver a peak current of 950A.
(Now why would i need a ESC that can do that when the peak current will not be higher than 140A!!?!!)
But the story continues on batteries.. Most people i talk too state that i need a high mah lipo with a C discharge rating as high as possible. So i got a 7600mah 4S 75-150C lipo.. Now when i'm calculating the amps this beast can deliver i'm going nuts: 7600mah=7,6A
7,6Ax75C=570Ah while i could do perfectly with a lipo of 140A (max current of Motor): 140A/7.6A=18.4C
Why are current and wattage rates of Lipo's and ESC's so much hyped up when it seems to be completely useless? And how come ESC's and Lipo's that should be capable of delivering so much current still get warm or even catch on fire when only a fraction of their capabilitys is being used? :weird:
Sorry for my dutchy english :sweat: