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Latest Run -
05.15.2005, 07:40 PM
I finally got my battery trays in some type of order and was able to get everything together for a run tonight for the first time in a couple weeks.
I used two 6-cell GP3300 packs (unmatched) wired in parallel. The BEC on the Warrior was enabled and I did not use a receiver pack.
My observations:
Speed - the speed was good for my back yard. I'm pretty sure it was as quick as my stock E-Maxx on 12 GP3300 cells. I'm hoping to get to my local track and try my 8-cell packs some time this week.
Cogging - very minimal. I'm definitely happy with how it worked this time around.
Brakes - I noticed mid-way through the run that I had no brakes again. I ended up breaking one of the pickets on our picket fence! (Don't tell my wife :) ) I had set the brake exp on my M8 to 100% last time out and I'm wondering if I need to start the radio at 0% and increase it after the car is already on. Does that make sense?
Runtime - on the two 6-cell packs (peaked about a half hour or so before I started running) I got at least 10 solid minutes of running. It was probably more like 15 or so, but I didn't time it.
Heat - here's where I may have a concern. Both the motor and speed control got hotter than I expected them to. I had left my IR temp gun in the garage, so I was just touching them. The motor was definitely hot to the touch and the speed control would have burned my fingertip if I had left it there for more than a second. When I was done I brought the buggy into the garage and checked the temp. After having a couple minutes to cool down in the 50-degree weather, the motor showed 140 degrees and the ESC was at 145. On only 6 cells should either be getting that hot? The batteries were actually cooler than either the controller or the motor. I'm sure this is because they are decent cells and they were wired in parallel, but both packs were comfortably warm and nowhere near hot.
Anyway, that's my latest report. Comments? Feedback?
Thank you.
Joe
Electronics run on smoke... if you let the smoke out, they stop working.
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