Quote:
Originally Posted by T-birdJunkie
Never. 480 is as high as ThunderbirdJunkie has worked with. We are talking sub-30 volts here, though, so none of that has any bearing on this conversation. We are simply talking SIMPLE DC systems, such as what deliver power to the ESC.
You are aware that electricity only seeks a ground simply because it's charged, and it's going to something that's charged oppositely, right?
We are constantly surrounded by electricity whether we are near electrical devices or not. Is ThunderbirdJunkie going to get zapped to death just sitting here, typing this out? In theory, it could happen, should the power supply on his computer go kaput, but that's another conversation for another time.
Water under pressure will go to wherever the pressure isn't. That is all there is to it. Go turn on your hose; it's going to come out the end, right? Not flow backwards. The unpressurized end of the hose is the ground.
Absolutely, if it's charged (pressurized) properly
Funny thing about this. If everything around you is a high pressure water system, and you yourself are unpressurized, absolutely it will.
It's called mechanical resistance. Also known as friction.
Just another word for "pressure regulator".
Prove it.
Ah, metaphors are lost on you. If you don't understand anything about hydraulic systems why don't you spend your time learning about how they work rather than telling everybody how they don't work.
And fluids flow for the same reason. If there wasn't more pressure behind the fluid pushing it to where it was going, it wouldn't be going that way.
Anyway, done dissecting your post. It's fruitless and it will solve nothing. Your mind is made up, and you're choosing to, rather than explain what's going on, chide somebody for asking questions in an effort to understand this mystical "ripple current" that spikes and stuff, and more to the point, have somebody explain why it kills ESCs.
Thank God somebody understands the analogy. A very basic understanding of DC is all ThunderbirdJunkie is after, and why voltage spikes would come from being drawn, and why this
This isn't an alternator in a car, where (since it generates alternating current electricity) voltage must be regulated, the voltage is (for the sake of argument) constant under load from the battery (yes, everybody is aware of voltage drop, etc etc, no need to nitpick...), why would it spike from the battery?
What would cause two 7 cell batteries on a Flux to spike to the point that it would surpass the MMM's 6S 24ish voltage max? Two 8.4v batteries, 9vish fully charged, shouldn't jump past 24v?
Everybody seems to be hung up on the fact that electricity isn't water and ignoring the fact that there are legitimate questions being asked.
Remember...input voltage is DC. Doesn't matter what the output is, unless what's frying is the switching mechanism, which the more ThunderbirdJunkie reads on the issue, it seems to be the caps and the fets smoking themselves from not being able to switch fast enough to deal with the ripple current, which again, points to more of a hardware issue with the speed control rather than a battery issue.
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never in his life did SuicideNeil come across such a know it all who beleived he had all the answers, yet actually had so few. WE ARE NOT DISCUSSING WATER, IT HAS NOTHING TO DO WITH ESCS. You show me one, just one BL MT weighing 10lbs+ that can run on duracell AAAs @ 50mph+ and I'll eat my hat. Sub standard batteries suck, that is all you need to know. Whether CastleCreations need to look at different FETS is very doubtful- that use items that arent even available to other manufacturers, at the cutting edge of design and capability for their esc's operating spec- aint using cheap components to save a few bucks here and there. Escs are also far from simple, otherwise every man & his dog would be designing and selling them to enthusiasts- ever built a BL esc yourself chap?
If they say to use good lipos capable of suppling enough current to meet the demands of the system, then thats what you should do, not argue about fluid dynamics and how it applies to battery selection; it really doesnt...
