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PostPosted: Wed 27. Nov 2019 15:34:47 
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Joined: Sun 23. Jun 2019 23:45:37
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So I had a weird crash recently where it became unresponsive. Others point to the stock 50a esc as being too weak.

Just to confirm: the esc needs to survive the BEC stress test which tries to simulate peak load, correct?

Mine, using the stock DS450M servos, logs low voltage and rx loss each time. I bumped esc voltage output to 8.5 and it now reboots towards the end of the test.


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PostPosted: Wed 27. Nov 2019 15:39:43 
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Also note: this is on a standard spirit with a single dsmx sat. The crash was on firmware 2.6.3 or 2.6.4. All the BEC tests were on 2.7.1.


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PostPosted: Wed 27. Nov 2019 15:50:01 
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Hello,

I am afraid you will have to add external capacitor to help the BEC or to lower the voltage. With higher voltage current is increasing actually causing bigger voltage drops.
It might work better with 6V but I recommend to add electrolytic capacitor of 2200 - 4700uF.

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PostPosted: Wed 27. Nov 2019 15:53:45 
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Thank you. I do plan to lower voltage back to the default of 6. I’m not familiar with adding a capacitor, will need to research.

Everyone keeps saying to get a new esc. (HW or castle)


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PostPosted: Wed 27. Nov 2019 16:34:43 
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Joined: Tue 21. Aug 2018 13:05:23
Posts: 196
you can get something like this one
the higher the capacity the better
Image


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PostPosted: Wed 27. Nov 2019 20:02:31 
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Thanks guys!


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PostPosted: Thu 28. Nov 2019 7:20:37 
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Joined: Thu 19. Jul 2018 13:54:36
Posts: 34
Location: Litoměřice
Attachment:
r2-buf-325-rtf.png
r2-buf-325-rtf.png [ 323.66 KiB | Viewed 349 times ]

Hi I have these capacitors and I am fully satisfied

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PostPosted: Thu 28. Nov 2019 9:58:27 
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R2 buffer is the Ferrari of the capacitors ;)


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PostPosted: Tue 03. Dec 2019 3:26:43 
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Joined: Sun 23. Jun 2019 23:45:37
Posts: 5
I put one of these on the BEC port and it passed many tests without errors or rx drop. ...even on 8v. I’m not sure what this is rated at, maybe 2474uF.

Thanks!

https://www.hobbyrecreationproducts.com ... -capacitor


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PostPosted: Tue 03. Dec 2019 15:30:22 
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Location: Alberta, Canada
urgno wrote:
R2 buffer is the Ferrari of the capacitors ;)


Yes they sure are, too bad no one sells them anymore, at least not that I could find.

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