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Batfish · 05.17.2005, 08:12 PM

I have new information regarding the brake problem.

Using my IR temp gun I've determined that the Warrior stops braking when it reaches 120 degrees.

Here's some information as to how I arrived at that conclusion.

Batteries: I ruled out the possibility of bad batteries by running these configurations - (1) 6-cell GP3300 sport pack, (2) 6-cell GP3300 sport packs in parallel, (1) 8-cell IB3600 pack in an MEC solderless power tube, (1) 6-cell GP3300 side-by-side matched pack. In other words, I've tried 7 different battery combinations with 5 different pack configurations, 3 different pack assemblies, 3 different pack manufacturers, 2 different cell types, and both matched and un-matched cells. I think that rules out that the batteries may be a problem.

Motor: The Feigao 8L was at different temps each time I noticed the brakes failing. 100, 113, 98, 128, 130, etc...

Radio: I had my M8 set at 75% brake exp the entire time and did not change it either while the buggy was on or while it was off. There was no change in the radio configuration between the times the brakes worked and the times they did not.

Speed Control: The Warrior 9918 was measured for temp by pointing my IR temp monitor at the heatsink. Brakes worked fine at the following temperatures: 65, 88, 91, 98, 112, 116, 118. Brakes did not work at all at the following temperatures: 122, 125, 130, 134, 140.

To test this, I drove my buggy in my back yard at at least 1/2 throttle (as fast as I could in my small yard, at least). I would drive for maybe 20'-100' or so and try to apply the brakes. I measured temps when the brakes were working; each time the temp was 118 or lower. I also measured temps when the brakes were failing; each time the temp was 122 or higher. When I took the measurement of 125, I stopped the buggy and let the ESC cool to 116, then drove forward about 15' and applied the brakes; the brakes worked. I then drove about 100' and tried the brakes; they did not work and the ESC measured 122 degrees.

Lastly, my Warrior has the first two digits on the sticker blacked out with what looks like magic marker. So it's *blackspot*18. Is this indicative of something? I was under the assumption it was just one of those mis-labelled controllers I read about in another post, so Mike may have just blacked out the 70 so customers wouldn't think they were ripped off. If that isn't the case, please let me know.

So my new question is: What do I do next?

Thank you.

	(#57)
Batfish RC-Monster Aluminum Offline Posts: 617 Join Date: Apr 2005 Location: MA	05.17.2005, 08:12 PM I have new information regarding the brake problem. Using my IR temp gun I've determined that the Warrior stops braking when it reaches 120 degrees. Here's some information as to how I arrived at that conclusion. Batteries: I ruled out the possibility of bad batteries by running these configurations - (1) 6-cell GP3300 sport pack, (2) 6-cell GP3300 sport packs in parallel, (1) 8-cell IB3600 pack in an MEC solderless power tube, (1) 6-cell GP3300 side-by-side matched pack. In other words, I've tried 7 different battery combinations with 5 different pack configurations, 3 different pack assemblies, 3 different pack manufacturers, 2 different cell types, and both matched and un-matched cells. I think that rules out that the batteries may be a problem. Motor: The Feigao 8L was at different temps each time I noticed the brakes failing. 100, 113, 98, 128, 130, etc... Radio: I had my M8 set at 75% brake exp the entire time and did not change it either while the buggy was on or while it was off. There was no change in the radio configuration between the times the brakes worked and the times they did not. Speed Control: The Warrior 9918 was measured for temp by pointing my IR temp monitor at the heatsink. Brakes worked fine at the following temperatures: 65, 88, 91, 98, 112, 116, 118. Brakes did not work at all at the following temperatures: 122, 125, 130, 134, 140. To test this, I drove my buggy in my back yard at at least 1/2 throttle (as fast as I could in my small yard, at least). I would drive for maybe 20'-100' or so and try to apply the brakes. I measured temps when the brakes were working; each time the temp was 118 or lower. I also measured temps when the brakes were failing; each time the temp was 122 or higher. When I took the measurement of 125, I stopped the buggy and let the ESC cool to 116, then drove forward about 15' and applied the brakes; the brakes worked. I then drove about 100' and tried the brakes; they did not work and the ESC measured 122 degrees. Lastly, my Warrior has the first two digits on the sticker blacked out with what looks like magic marker. So it's blackspot18. Is this indicative of something? I was under the assumption it was just one of those mis-labelled controllers I read about in another post, so Mike may have just blacked out the 70 so customers wouldn't think they were ripped off. If that isn't the case, please let me know. So my new question is: What do I do next? Thank you. Joe Electronics run on smoke... if you let the smoke out, they stop working.