Cables and connectors:
We will soon offer all sorts of cables and connectors, so that you CAN have your Board up running without soldering.
A JST-Ph to PPM is on the list.
SAFETY: IF YOU BUILD A NEW BOARD AND RIDE IT FOR THE FIRST TIME, SET A SAFE RPM/SPEED LIMIT AND DROP YOUR MOTOR MIN/BATTERY MIN TO A VALUE THAT THE BOARD WILL NOT BRAKE HEAVILY. SET YOUR MOTOR MAX TO VALUES ONLY ALLOWING GENTILE ACCELERATION. TEST YOUR BOARD FOR A WHILE, SO YOU KNOW EVERYTHING IS STABLE AND WORKS RELIABLE. THEN YOU START TO INCREASE THE VALUES AND TEST AGAIN. THIS WAY A POOR CONNECTION WILL NOT CAUSE MAJOR TROUBLE OR ACCIDENTS. RIDE YOUR BOARD SOMEWHERE WHERE NO ONE IS PUT TO DANGER IN CASE OF A FAILURE.
I had only 6 pins JST, I cut one in half with a cutter and there you have a 3 pin jst that fits very well.
Also to be safe against connectors unplugging while youāre going downhill you can configure the VESC to brake after a second or so after the connection with the remote is lost. you can also chose the braking amount - now this setting in the vesc tool is in the App Setting (General) section: Timeout and Timeout Brake Current.
I have tried the 6 with a single motor 6374 in FOC with conservative settings (60A motor max) and itās amazing, with my ~105kg I can climb very steep hills no problem (0.5km - Avg Grade 6% for example), I changed with 90A motor max as with 60A the motor still runs cool, and will try it soon with that too
Iām wating for a way to log data from the new Vesc to be available as there have been (small?) changes in the protocol, I would like to get the max temp reached and the power drawn to check the efficiency. Overall Iām impressed with it and I donāt think I will ever need to add extra cooling to it (like exposing the metal part outside of the enclosure).
xt90s.
although Iām still waiting to hear how a connection with nothing but a bit of vaseline or anti-electric paste would do. stops the arc through the air and then slide the two conductors together.
Now itās possible to scale up, other components need to be beefed up as well.
A good setup should still limit the amp flow as much as possible. Voltage up, amps low is still the best way to go.
I donāt think there is an of the shelf solution available yet. Have you thought about a parallel array?
There is this guys i am thinking of buying 2 as i have a dual drive trampa with 2 batteries one for each vesc so i would need 2. Only problem is they say hole diameter is 12mm and i have 16mm hole already drilled, so going to make a plan of some sort . What you think ?
The vedder anti spark switch can go more than 40A you just need to change the fuse, I changed to a 50A fuse and it holds 50A w/o problem, the mosfets should be rated for much more (240A?) but probably there are no small fuses (ATO/regular fuse) over 50A that can fit that holder. There are posts on the forum of people soldering a bigger fuse or two in parallel even if the cleanest solution is probably to change the holder to put a bigger fuse (size: maxi) that can go up to 120A.
this looks fantastic and I wish I could have waited for this project (just bought first build, a pair of VESC 4.12).
One thing about the design and how would you be mounting those: if the metal heatsink should be on top it means all the connectors are sitting on the bottom plate. If you would simply place the VESC on the top side of the board, wonāt the connections obstruct the clearance?
I want to run vescs and motors to their maximum and if i only get one that will limit me to 60 Amp per motor as it is rated for 120 amp. With 2 i can have settings upto 120 Amp if the vesc and motors can handle it , i dont want my power switch to be the bottle-neck in my system. Correct ?
I tried to do a full-throttle test uphill and itās awesome, nothing compared to the 4.12 which without cooling (heatsink) had problems not overheating
Then right after it I was able to reach full speed no prob. (40km/h, itās an 8s)
Ackmaniac,ā¦ is your appt useful with single motor boards ?, ā¦i can understand wanting to tame a double motorās torque but what advantages do you get with a single ?
Someone tested the VESC 6 with metr.app and brick his VESC 4 because communication has changed a bit.
He recovered the VESC with a STLink. Now they have fixed the issue with a bit a reverse engineering.
So sorry, but testing your app with VESC 6 before BV release the protocol seems to be a bit risky.
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