Buy FOCBOX Unity

Vedder's VESC 6.0


#964

No, it can go well over 60k ERPM. Been pushed up to 120k ERPM with no issues.

No idea where the limit is.


#965

Not sure it that was for me, but yes got a stainless steel stencil and pcb both from pcbway.


#966

Sk3 192kv is rated for 2.5kw


#967

You sure. the website says just over 4Kw

https://goo.gl/n1dZ2B ( link to website )

If I am right with my Physics. Wattage is measured from Voltage * Amp so thats 50 * 80 = 4000W or 44 * 80 = 3520W


#968

Well I have pulled about 32-40A constant… the motor did get quite hot (that it is hard to touch the windings with finger)… so I assume 60-70A might be possible… though someone should check this with infra red camera or thermo-meter


#969

Yep, you’re right, i assumed it was 6364 and not 6374


#970

150k erpm 10 chars


#971

Safe to say then the vesc can handle the new king of sk3’s then :smiley:


#972

No, 150k erpm tested.


#973

@trampa So I just confirmed that the 3.28fw gives me the R=0 error during foc detection using the FOC box. I can also confirm that this error does not occur using the 3.26FW with the FOC box. I thought that might be helpful for Ben to know. Thanks.


#974

So, I think my vesc just died.

Ive written a post on the forum (http://vesc-project.com/node/161) as it pretty long so I wont post it here.

In short, slow riding on a good day from uni. board stops responding but doesnt lock up. vesc is fine but cant control the motor. here are some pictures https://imgur.com/a/hv5hc. vesc securely stored in a water&shockproof container)

No idea what to do so any help would be appreciated.


#975

Awesome man! I’m also designing my own board, can you share your altium files?
Can’t wait to see your design!


#976

The bluish corrosion on the directfets seems water corrosion to me.


#977


#978

If its waterproof how come it looks like there is a ton of debris that got in there?


#979

The VESC6 is nowhere near waterproof, its just enclosed by a piece of aluminium and a PCB as coverplate. There are still enormous openings for connectors and the wiring.


#980

@fedestanco @JTAG The weird thing is the vesc is housed inside a custom made mount ( which is water proof ) and a custom made protective cover which is water resistant. I can absolutly say without a doubt, no water got anywhere close to the vesc :confused:

Does anyone know what the Caps are made out of. I know some of them are liquid based, could it be one might be leaking?


#981

I don’t claim that it was liquid for outside (I just wanted to state that the VESC6 by itself is not waterproof :sweat:), in your case it indeed looks like liquid electrolyte leaked from the capacitor damaging the FET, it seamed to leaked directly into the case of the direct-FET. The capacitor could be a faulty one or the ripple current exceeds the limits of the capacitor.

I think that Ben might be interested in analysing what happend with your unit, at least I am curious. Good luck solving the issue.


#982

Cheers. Lets just hope Ben can find out what happend to inform others about a possible faliure


#983

With help from @hexakopter. It appears the capacitor is a “Wet” type cap and that is what probably caused to corrosion. Ill contact @trampa to check on what the next steps are going to be.