14S VESC ?

General topics and discussions about the VESC and its development.
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Ecyclist
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Re: 14S VESC ?

Postby Ecyclist » 25 Dec 2017, 18:50

Unfortunately, I don't have a test station to measure efficiency of electric motors. I can build almost anything and I have tools for that, so maybe one day.
About theses Chinese motors. I suspect that they are all made in one mega factory, but I can't find anything over 63 mm on Maytech website.
TheFallen, can you please post a link to the Maytech page with 80 mm and larger motors? It took me forever to find two different 8072 motors and I would love to have one extra source.
BTW: How are you doing with your robot combats? 18 years ago, my neighbor was into battle bots and asked me to join, but I was too busy making money at the time.

mdagbro
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Re: 14S VESC ?

Postby mdagbro » 25 Dec 2017, 23:18

Hi guys.

I've messed up and bought a VESC for my 13S5P E-bike. I didn't do enough research beforehand, I thought the 60V input rating meant that it would take my 54.6Vmax battery, but now I know the voltage on the input side can well exceed the battery voltage. How screwed am I?

Will I be OK if I limit regen to a low current, trying to keep input voltage below say 57V? I have real brakes too so limiting regen wouldn't be the end of the world. Or will the input voltage exceed battery voltage even when driving forwards?

My VESC is one of those heatsinked, heatshrinked ones, and it has 2x 63V 470 uF Rubycon YXJ caps soldered directly to the board. Should I add more? Battery leads are ~25 cm in total.

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TheFallen
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Re: 14S VESC ?

Postby TheFallen » 26 Dec 2017, 02:15

I've heard they're fairly responsive over email which is the best place to go for custom/specials.

But for links try Alibaba: https://maytech.en.alibaba.com/product/ ... e_uav.html

Doing alright in general, but the lack of decent ~160A ESCs is limiting. Our team page is: https://www.facebook.com/teamcyberwar/

ThierryGTLTS
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Re: 14S VESC ?

Postby ThierryGTLTS » 26 Dec 2017, 10:54


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Ecyclist
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Re: 14S VESC ?

Postby Ecyclist » 26 Dec 2017, 17:47


mdagbro
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Re: 14S VESC ?

Postby mdagbro » 26 Dec 2017, 18:40

Thanks Ecyclist! Do you think it's safer if I add two of these in parallel with my 2x470uF?

https://www.electrokit.com/uhe1j102mhd- ... 35-5.48500

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Ecyclist
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Re: 14S VESC ?

Postby Ecyclist » 26 Dec 2017, 18:52


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Re: 14S VESC ?

Postby Ecyclist » 26 Dec 2017, 19:00



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