So how many ICE2 ESCs have burnt up since the recall?

[Justin Stuart]

Is the Castle software able to record the voltage ripple?

[McCollister911]

Absolutely

[dunkonu23]

You can be assured there are absolutely no viruses/trojans/or other security issues on the ESC Failure spreadsheet. I, too work in computers. I'm a senior network and security engineer and work on contract for one of the largest auto makers in the world. About 75 percent of all Internet traffic at any time of the day will go through circuits owned my employer. While that doesn't mean much, I can only assure you. If you or anyone find problems with the spreadsheet, please, please let me know.

With that in mind, attached is the latest spreadsheet.

Scott

[band]

Originally Posted by band

I'll have to check with the BL motor engineer I deal with, but I don't think that motor efficiency has anything to do with the actual motor speed on a certain voltage. In other words you can't add "0.8 eff." in the equation to get motor speed. Eff. effects how much power the motor is able make based on how well it's able to use the incoming wattage, not how many RPM it turns for each volt that is feed into it.

I was able to take the time to check on whether or not a motors efficiency affects the motors KV. It does not. KV is measured in an unloaded condition, and efficiency affects how a motor reacts under loads.

[teshreve]

Originally Posted by dunkonu23

About 75 percent of all Internet traffic at any time of the day will go through circuits owned my employer.

I trust you more for your Dream Theater avatar than this outrageous claim

[dunkonu23]

Originally Posted by teshreve

I trust you more for your Dream Theater avatar than this outrageous claim

LOL! I do love Dream Theater.

Scott

[vintcs]

looks like if tough to even try this ICE2 esc again....

[band]

I put the new 4.0 in my 120 Ice2, the gov works better than ever!

[dunkonu23]

The weather is bad here... both of my ICE2 HV120's have been upgraded, but the weather is bad.

Scott

[dtabuenc]

Originally Posted by tgeo

I know 1500 is on the low side, but didn't have any problems on previous flights and it is in the range of acceptable rpm at castles program. My logger indicates that @ 1500 rpm the amp draw was about 13mAh so i don't see why that would be a problem for a 160amp rated ESC. If castle has problems with low rpm then their software shouldn't allow it.

I am convinced that if castle changed their suggestions on the governor setup screen we would see a lot less of these burning up. Why do they keep driving people to over-geared setups? I remember when I got my first castle ICE 50 on my 450. Based on the castle link suggestions I ended up buying something like a 17 tooth pinion. It was silly. I think I ended up running 15T on a 6s setup. You got to really pay attention to your power out % to see if you are geared right. It should stay 80-100% range most of the flight.

1500 RPM is much to low for your gearing setup. While the current is one factor in the temperature, the switching inefficiencies will also heat up your ESC pretty quickly, especially at certain lower throttle settings.

[dunkonu23]

Here is the latest HV ESC Failure spreadsheet.

Scott

[Gregor99]

Bobby Barr's (RC Today Show) new Goblin.

Originally Posted by Bobby Bar

3rd flight...30 seconds in the motor quit. Auto rotated down safely and got canopy off ASAP. By that time was already in flames. CC 160 went up without reason.

More pics here https://picasaweb.google.com/1007933...11625095475602

[Justin Stuart]

OMFG!!

[McCollister911]

Wow that's what I'm running in my goblin. What was the esc settings. Pinion/motor? Headspeed. I have 2 motors scorpion and xera both the 4530LEs. I run 24 on xera and 23 on scorpion. HS is 2125 & 2250. Mine throttle out is usually 75-100% and I haven't had any problems. Set rpm gov gain at 27 and all is working perfectly. Hate to see that.

[dunkonu23]

Added to the list.

Scott

[spikestabber]

What? It destroyed that Pyro's windings too? Thats rare.... wow.

[Gregor99]

Originally Posted by spikestabber

What? It destroyed that Pyro's windings too? Thats rare.... wow.

I don't think that has been established at this point. If the Pyro's windings are damaged, or shorted that could have been the root cause of the ESC going up. Hopefully we will hear more from Bobby as he sorts this out.

[dunkonu23]

Here is the latest HV ESC Failure list

Scott

[JustPlaneChris]

Originally Posted by spikestabber

What? It destroyed that Pyro's windings too? Thats rare.... wow.

We theorize that the (excellent) Pyro fan sucked the flames right up through it before it stopped spinning.

But, to be perfectly fair to everyone involved, the Pyro could have failed first and taken out the CC... I guess there's no way to know when everything was a $600+ charred mess after the fact.

[VNAMUS]

Originally Posted by McCollister911

Wow that's what I'm running in my goblin. What was the esc settings. Pinion/motor? Headspeed. I have 2 motors scorpion and xera both the 4530LEs. I run 24 on xera and 23 on scorpion. HS is 2125 & 2250. Mine throttle out is usually 75-100% and I haven't had any problems. Set rpm gov gain at 27 and all is working perfectly. Hate to see that.

I'll have to check all of the settings when I get home. I can tell you what I remember.

Kontronic Pyro 700-52
Governor mode - Set RPM at 1950
Ratio was 9.27 : 1
530 KV
10 Poles
Medium power settings
8 KHz
0° Timing
Current limiting to OFF

I'm going to be pretty quiet about it all until I hear from Kontronic and Castle. I don't want to point fingers until I know where to point them. As Chris said, it looks like the motor's fan just sucked the flames and heat right into it. Very concentrated in the Goblin's canopy.

The first two flights went fine, just tweaking the AR7200BX. Only put 3100mah back in the packs after a 7 minute flight. Obviously very conservative flying and headspeed. 3rd flight was just 30 seconds in when the motor quit in flight.