Official FlightLine 1600mm B-25J Mitchell PNP Thread

[Jdcrow]

Is there a "Special Callibration" process for the ESCs? I cant get them to go into calibration mode. Just keep getting the constant beeping that indicates throttle is above no throttle position.

i have throttle function on both banks. Just dont feel like im getting full throttle. Waived off the maiden attempts yesterday as it didnt feel like the aircraft was rolling out with any speed on take off.

This is the First Freewing or Flightline model Ive had it not work. including B-24, F-14, Me262.

[LucB]

I have a similar ESC calibration problem now after the loss of one ESC (fire). I connect the second ESC (with UBEC) directly to the receiver, plug the 6S lipo and it is only beeping (about one beep per second) and no way to get out of this mode. Cut-off disabled. I can't find on MRC the ESC manual. Is the second ESC dead too?


About the ESC on fire (posted on FB group) I had 7 flights of 5 minutes with an Admiral 5000, no issue, plane flights great, maybe a bit fast to be fully scale, and still have 48-50% of capacity available, flying at 50-60% of throttle. But climbing to the sky when flaps are down.
I wanted to program the elevator compensation for the flaps last weekend at home, when I connected the battery, I got a huge electric spark at the battery connector and immediately a "pof" (sounded like a capacitor explosion) and flames coming out of the (right) nacelle. It was impossible to unplug the battery (electric soldered). No other choice than pulling everything that could come with it (the power cable of this ESC came with it). The inside of the nacelle is a bit melted, as well the engine plastic cover and the yellow cover, and 2 holes in the nacelles where the ESC is located. I could avoid a total loss by unassembling as fast as possible the wing and the nacelle while still black smoke was coming from that nacelle.

I raised a ticket on MRC site on Sunday evening but still no return to date.

[Waynec53]

Finally was able to put my B-25 together. Applied the decals, 4 coats of minwax poly, setup with ar8360 receiver and using an NX10. Everything adjusted and checked out, decided to do some taxi tests outside the garage. All was good tracked straight, then on taxi back in the right motor started making noise, stopped turning and started beeping. Unplugged battery and carried in to workbench. Plugged back in, motor turned normally initially, THEN the magic smoke started pouring outa the nacelle. Immediately disconnected battery.
Results after disassembly was the ESC completely fried, the wires to the motor disconnected from board, suspect the heat melted the solder. Motor looks ok and turns by hand, but is blackened not sure if something wrong internally or the heat or smoke from the esc did it.
work ticket sent to motionRC, now I wait,,,,,,,,,,,,,,,,,

[MrSmoothie]

Similar: https://www.hobbysquawk.com/forum/rc...read?q=beeping

This is so strange. I helped my father repair the nose gear/retract on his B-25 after a landing that was just short of the runway. I was testing the retracts by taking the "retract lead" from the blue box and plugging it into a separate Rx/BEC from that in the model that I use for testing. Reaching under the fuselage to do one final test, I went to connect the EC5 plugs (lipo to my separate Rx) and somehow managed to touch them backwards (don't even ask me how this is possible). I felt like an idiot when smoke came out of the right hand nacelle.

We pulled that ESC, and got a replacement from Motion. The replacement has an additional yellow lead that the original did not have. Based on the brochure, it didn't look like it served any purpose.

Today we were ready to test the model. Powered up, and did a range check. The we did some taxi tests, brought it back to the pit to adjust the nose steering linkage (lipo disconnected), then did some additional taxi tests. All was well, and I handed the Tx to Dad. He goes to take off, and neither motor turns and each ESC emits a steady beep. On a whim, we tried rebinding the Rx, but no change. I'm not kidding, after all the taxi tests, it was the instant before the first post-goof flight.

Why are RIGHT side ESC's burning up? Has anybody learned anything new?

I also wonder why, on Flightline twins, you don't have to disconnect the center wire of one ESC, as you typically do on twin ARF builds.

[MrSmoothie]

I should have included this link -- some similar posts: https://www.hobbysquawk.com/forum/rc...read?q=beeping


This is so strange. I helped my father repair the nose gear/retract on his B-25 after a landing that was just short of the runway. I was testing the retracts by taking the "retract lead" from the blue box and plugging it into a separate Rx/BEC from that in the model that I use for testing. Reaching under the fuselage to do one final test, I went to connect the EC5 plugs (lipo to my separate Rx) and somehow managed to touch them backwards (don't even ask me how this is possible). I felt like an idiot when smoke came out of the right hand nacelle.

We pulled that ESC, and got a replacement from Motion. The replacement has an additional yellow lead that the original did not have. Based on the brochure, it didn't look like it served any purpose.

Today we were ready to test the model. Powered up, and did a range check. The we did some taxi tests, brought it back to the pit to adjust the nose steering linkage (lipo disconnected), then did some additional taxi tests. All was well, and I handed the Tx to Dad. He goes to take off, and neither motor turns and each ESC emits a steady beep. On a whim, we tried rebinding the Rx, but no change. I'm not kidding, after all the taxi tests, it was the instant before the first post-goof flight.

Why are RIGHT side ESC's burning up? Has anybody learned anything new?

I also wonder why, on Flightline twins, you don't have to disconnect the center wire of one ESC, as you typically do on twin ARF builds.