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chilledoutuk
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03.28.2008, 01:02 AM

I am not playing devils advocate but looking at the video you just linked I wonder were you trying to make a flux capacitor ?

I mean whilst its not quite 4 times the max length (I think they were exaggerating) your battery cables are way to long and looking at the way they loop around and remember that you have to add the cables in series to get the total effective length.

Put it like this the series link between the packs alone in that video looks to be about 8-10 inches then add another 8-10 for the rest of the y cable then add another 8 inches for the cable to go through your eagle tree and back to the esc.
That adds up to a lot of cable and inductance that needs greater capacitance for decoupling.

I will add that schulze seem to do everything in extremes that includes escs failing in a ball of fire and treating there customers like they questioned there parentage.
   
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lutach
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03.28.2008, 01:49 AM

Quote:
Originally Posted by chilledoutuk View Post
I am not playing devils advocate but looking at the video you just linked I wonder were you trying to make a flux capacitor ?

I mean whilst its not quite 4 times the max length (I think they were exaggerating) your battery cables are way to long and looking at the way they loop around and remember that you have to add the cables in series to get the total effective length.

Put it like this the series link between the packs alone in that video looks to be about 8-10 inches then add another 8-10 for the rest of the y cable then add another 8 inches for the cable to go through your eagle tree and back to the esc.
That adds up to a lot of cable and inductance that needs greater capacitance for decoupling.

I will add that schulze seem to do everything in extremes that includes escs failing in a ball of fire and treating there customers like they questioned there parentage.
The length of the pack cables are 5 inches, the series adapter is 5-1/2, but I've use the same series cable for a long time now on other controllers and nothing happen to them. I used the Schulze more than enough times and Mr. Schulze said, "A new controller would also fail within minutes or even seconds", which is BS. I have controllers that even states if I shorten any wires, it would void warranty. I'll see how long the 18.61 will last. The MGM controller didn't have any problems with the wire length and it ran cool just like the Schulze was running before it flamed up. You should see the length of the Spin 200 wires and I've seen a guy in rcgroups using the Spin 300 and the length of the wires are even longer then what I have. Here is a link of an even longer wire: http://www.rcgroups.com/forums/showp...2&postcount=52, good thing this guy is not using a Schulze controller.
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othello
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03.28.2008, 07:01 AM

Sorry to read this. I sort of expected this outcome when he asked you for pictures of your setup. Cable length: It really depreciates the value of their high priced ESCs. I measured the cable length i use in my car and came to the conclusion i never could use Schulzes as i do exceed their max allowed cable length (38cm/15in in one direction -> 80cm/31.5in when adding the plus and minus cable). Using 2 packs wired in series and an eagletree adds quickly. Never thought my total cable length (when adding motor cables too) totals 1m/39.4in. Glad the Jazz ESC never complains about it, but it explains my voltage drops on high amp spikes.


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Jazz 55-10-32, Neu 1515/2Y (1100kv), 9s2p A123 (27v), up to 3.1KW
Latest video with eagletree Data inserts: Run on asphalt
   
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lutach
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03.28.2008, 10:59 AM

Quote:
Originally Posted by othello View Post
Sorry to read this. I sort of expected this outcome when he asked you for pictures of your setup. Cable length: It really depreciates the value of their high priced ESCs. I measured the cable length i use in my car and came to the conclusion i never could use Schulzes as i do exceed their max allowed cable length (38cm/15in in one direction -> 80cm/31.5in when adding the plus and minus cable). Using 2 packs wired in series and an eagletree adds quickly. Never thought my total cable length (when adding motor cables too) totals 1m/39.4in. Glad the Jazz ESC never complains about it, but it explains my voltage drops on high amp spikes.
Thank you for posting this othello. I know it has nothing to do with the wires being too long, because I've used the same series adapter on my other controllers. Some controllers that I have, the length alone of their power wires is close 10 inches. I think they might have a flaw in some controllers that do come out of the assembly line that got passed by QC.
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rhylsadar
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03.29.2008, 04:43 AM

hi

how old was this controller when it burned up?

btw i once tested this backward rolling and full throttle thing in the maxx with a schulze 18.97kw. the truck stopped for a split of second before it went forward again. so i think its not going directly from backwards rolling into a forward motion.

what exactly is the 'common wisdom' why the esc fried?

bye
rhylsadar


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lutach
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03.29.2008, 10:59 AM

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Originally Posted by rhylsadar View Post
hi

how old was this controller when it burned up?

btw i once tested this backward rolling and full throttle thing in the maxx with a schulze 18.97kw. the truck stopped for a split of second before it went forward again. so i think its not going directly from backwards rolling into a forward motion.

what exactly is the 'common wisdom' why the esc fried?

bye
rhylsadar
The controller was made in 04. What my truck was rolling backswards slightly after a slide and I gave some throttle it did stop, but that's when the controller started catching on fire. Schulze can say it was because of the wire length all he wants, but that's not why it fried.
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