Wow, is this small!

[Flybar-less]

OK, I just opened up the box for the Jazz 55, my first thought is how can it handle a 10S system, or should I put it in the Trex 450. I picked up some thermal adhesive on the way home from the flying field and will look at other threads to apply heat sinks.

[OICU812]

It will be fine John, I have 4 of them all work fantastic. :wink:

[Flybar-less]

Thermal epoxied some heatsinks on.

[HONESTABE]

I just got the PJ and that is one huge (and heavy)ESC. I didnt want to run the risk of thermaling the Jazz, but I am reconsidering it. Where do you get the tape?

[Flybar-less]

I f you mean the epoxie, Fry's electronics carries Artic Silver Thermal Adhesive.

[Mercuriell]

It's hard to envisage such a small package doing the job - I'm on my second now for the 500 and not even a sniff of thermalling or frying even with peak currents up to 106A - did HS the 6S one though - I'm sure you're gonna love it @!

[Flybar-less]

Is the ferrite ring needed for 2.4?

[NTM]

I'm not using it on mine.

[Flybar-less]

Anyone running the Jazz on 2S, PJ only likes about 7.7 volts.

[Ticidytoc]

Anyone running the Jazz on 2S, PJ only likes about 7.7 volts.

2s on my 55 seems to work.

Is the ferrite ring needed for 2.4?

Not from what I have seen.

[Chachin]

Same here, I took off the ferrite ring from all my Spektrum helis. Works great, saves weight and it often helps eliminate a servo extension. I remember watching a video where the Spektrum guys themselves say the ferrite ring was not necessary with their system.

Chachin..

[MrMel]

Even though not needed for the spectrum it self, since you usually run the throttle cable next to the motor, you can still get glitches (not intefering with spektrum, picked up by the cable)

It have happened to me when I got a bad bearing in the motor.

I keep my on for that reason.

[Flybar-less]

I went out today in 45 degree F. weather to try the Jazz 55. It themalled on my second and third flight in the 10S 600. So I installed it in the 8S 600 and it thermaled again. It did not feel warm to the touch either. Heat sinks were applied with Artic Silver thermal epoxy, picture is earlier in this thread.

I don't know what to think about the different problems with the CCs blowing controller boards, Jazzs thermaling, and Power Jazz gov quirks.:confused:

[Mercuriell]

What a PIA - can you fix up an FDR to see what sort of currents you are drawing - I run two Eagletree's permanently in my two most frequently flown helis and they have proved useful on two occasions of ESC and motor failure to send back to the manufacturer to show the items were being run within spec.

I have had no probs on my L600 (no heatsink) with 600 blades running up to 106A and on my L500 (with heatsink) with 515 blades pulling up to 89A - this is all at current ambient 30 °C temps (86°F) - maybe you could try some smaller blades ?

[MrMel]

I would say its absolutly no chance it thermaling in 45F ambient on a normal running system.

Something else is to blame is my guess.

How did it behaive when it happen?

[Flybar-less]

It behaved normally, flew well in both helis, when I noticed a power reduction, I landed, and it would not restart per the instrucions. No other issues, both helis have been flown quite abit with CC or PJ.

[MrMel]

Did it flash a certain code with the led when you landed?

[spork]

John, did you remove some heat-shrink before applying the heat-sink?

[Flybar-less]

Of course, did you look at the picture?

[Flybar-less]

MrMel,
Flashed in triples. Maybe it's a defective unit. Works for about 3 minutes then goes into reduced power mode. Magic smoke is still inside, motor gear combo well known...

[MrMel]

I would hook up a EagleTree before I did anything else, just to check.
Specially when you have tried different controllers without good result from anyone, it could be bad motors or something else in the works here.

Well, thats what I would have done.

(been in a simular situation with a bad neu and bad hacker causing over-currentdraw)

[spork]

Of course

Good. Just checking.

did you look at the picture?

Yup. I can't tell from the pic.

[NTM]

Definitally something elnse wrong there. The jazz should deal with that motor no problem.
When mine used to thermal it actually warped the plastic esc mount on my logo 14, it was so hot.

[Flybar-less]

Strange thing is the other controllers I have used have not ever been hot after flying. The CCs all had static take out something on the controller board, never a component in the power section. They have reused/repaired several with new controller boards using the old power stack. I have been in constant contact with CC about this, they don't suspect any thing abnormal in the power system. I have a 1915/1Y we used one time to cross check. The Logos have not shown signs of too much current, and this is one of the reasons I am going to higher voltage systems, because I have taken out FETs in 6S systems on my Trex 600, both Align and CC. Hopefully this time it is just a defective unit.

[OICU812]

Good Lord John you having some bad ESC luck man!! I have now had over half a dozen Jazzes no issues ever! "Touches wood immediately" :D

Man I hope things start going better for you soon in this respect!

Shawn