Quote:
Originally Posted by AmiSMB
I did say that the gearing stays the same but due to the increase in voltage this will give me a higher top speed (all in theory of course). So as I am dropping 700kv I will also be drawing less current than I was using the 2250mah and should be drawing less current as I am upping the voltage as well. As I said we shall see what happens when it arrives. Maybe when they make higher capacity cells which are not silly amounts of money then we can all stick to a decent 4s setup. I am initially going to test with 3 x 5200mah 2s Vampire racing packs and 3 x 5000mah 2s Demon (now non brca legal) packs. If this is good then I will look at the highest capacity 6s packs available which at the moment seem like the Hyperion G3 VX 6500mah pack once they have been announced and if they fit the battery tray  |
When I say 'geared to a higher top speed' I mean gearing should be changed to suit the motor and battery (plus the weight etc). As you have a higher top speed, it is the same effect as gearing higher. Also, you say you have less current draw - which is true, but you also have less capacity to draw that current from, 5 Ah instead of 8 Ah, hence my earlier Wh comparison.
You won't need a 6500mAh - that'll be stupid weight, and those Hyperion G3 cells aren't light either. Higher C rating = more weight, which is why my new set up is 'only' 18C continuous, but which is still enough (109.8A continuous), predicted max current draw (burst, under heavy acceleration, is about 105A), and the burst capability (30C) is 183A.
Quote:
Originally Posted by DaveG28
Hat would be a reasonable temp at the end of a 5min run guys?
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My understanding is that the ESC should be no more than about 170-190F, and the motor shouldn't really be more than 160F, ish (at 190-200F the motor begins to, let's say, not perform quite as it's meant to).