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Old 01-17-2008 | 08:42 AM
  #10  
strat1960s
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From: Schertz, TX
Default RE: 2.4 Ghz and glitches

Ok, here is where we're at as of today. (Casper Wy. on my way to Tx. lol) Actually, I purchased a new ESC. A couple of weeks back, my motor seized up on me. While I was trouble shooting and looking for the cause and a possible cure, both the motor and ESC/BEC got extremely hot. Too hot to touch. RC Tek, sent me a new motor and I sent the old one back for them to look over and send on to Scorpion. Just about everyone I have spoken to are under the belief that something in the BEC/ESC got too hot and caused my lock out. It may be safe to assume that when you have a motor go bad, you might want to consider replacing the ESC/BEC at the same time. (just my opinion though)
I was going to replace my ESC/BEC in the hotel room last night but since my POS Cold Heat soldering iron won't heat up enough to melt the solder, it'll have to wait till I get to San Antonio. I need to purchase some supplies anyways. So if the ESC BEC is actually what caused my lockout, then I'll know by the fact that I don't get locked out again........well, I may never know for sure and here is why. Before packing everything up and getting ready for my trip, I ran some "gee-golley" tests on my heli. I spun the motor up to a little less than 50% throttle and used a laser thermometer to take temp readings. See, what strikes me as odd is that I'm even able to get the tx/rx to work. My idea of being broken is that it does't work, but everything seems to be working at this point. Back to my little tests. After running for about 4 minutes the motor got as hot as 106 and the ESC/BEC was fluctuating between 150 and 160. Everyone tells me that 110 to 120 is a more acceptable temp for the ESC/BEC. From my understanding when the BEC gets too hot it cuts power to the ESC/BEC and the RX goes into fail-safe mode, which in my case was screamin down the middle of my shop then hanging a left turn around a truck, crashing into the floor and sliding under my tool box. (I re-set my fail-safe throttle level to zero to prevent the screaming down the middle of my shop portion)
So, when I get to Lackland AFB I'll pick up what supplies I need and make the ESC/BEC swap. I'll let everyone know how it goes from there.

I wander, since it's -4 outside, if I flew the heli would I need to worry about the ESC/BEC over-heating? Maybe I should be worried about wanting to fly in -4 temps. I saw some really sweet places to fly on the side of the interstate.
Have an Air Force Day!

Ted