yep, that’s what I remembered, so where and how did you connect the 3 wires to the cable?
Please read my topic and look at the pictures. I documented everything.
I searched, couldn’t fine, will try again.
What diameter bolt did you use to hold the prop blades on?
M4 screws that came with the FoldProp from Propellerking.
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Great work ! Is there a chance the 3D printed components will warp with the heat from the ESC, heatsink/ batteries?
No. Printed with ASA and ASA-CF.
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Hi Markus, that’s the only post that I find that shows the connecting of the cable to the motor wires, is that Shrink with glue there?
what kind of glue did you use?
Yes, it is shrink tubing with internal adhesive.
Hi Markus,
in one of the pictures it seems like the capacitors are connected only to the red wire. am I missing something or is it just misleading picture? they should sit parallelly to voltage inputs, right?
How much capacitors should be in Series for good cooling?I got 9 on the Fsesc 75350 as the standard configuration, but its getting hot very quick.
Capacitors have nothing to do with preventing heat, they flatten out the ripple voltage to prevent spikes that could kill the FETs. You still need cooling at high currents, no matter of the number of capacitors. Capacitors are connected in PARALLEL to the input power side, as close to the FETs as possible.
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Thanks - just wanted to make sure there is nothing silly here…
for glue-ing and sealing the heatsink to the box, it looks like you used black silicon, did you use epoxy as well? what did you use to seal the screw holes?
I just used black Sikaflex to glue the heat sink on. No Epoxy.
The holes or inserts are located under the heat sink and are therefore sealed!
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I was testing temp this week. Started without external heatsink.
After 15m the internal temp in the enclosure climbed to 62c
So definitely need heatsink.
But i noticed hi heat coming from the battery and this is concerning (i assume it was about 60. As it was touchable)
What is the expected temp and what is safe from the liion pov?
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Hi Markus, Did you post the files for the frame that holds the controller anywhere?
I am too lazy to draw it
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Thanks.
I need advice.
I finaly got to test in the ocean. And it failed. Under load i gets sttuter. Miggt be cut off due to current.
I noticed that u der 30% throtle it work but anything above i start getting sttuters.
I tested in a pool and it worked fine full throtle.
Since the i disassembled the capacitors and connceted the on wires…
Have you run into such?
What would you do to debug?
Oh, OK.
That doesn’t sound good.
I didn’t have any problems during my pool test and the first ride on the sea.
I don’t have any ideas for you at the moment. Other than testing it again in the pool. I don’t think it’s the external capacitors.
But there are enough smart people here in the forum who have more experience than me. I’m just starting out with my hobby.
My draw from the Pool:
