methods
1 GW
We have got a lot going on over here... lots of good pictures coming.
Here are some troubleshooting shots from the Farfle controller that I botched up. In order... Phase A, Phase B, Phase C.
View attachment 2
Yea.. I know that scope is an antique but it is 100MHZ and I got it for free. My precious 350Mhz 4ch Tek died a sad death of electrolyte drowning on the caps. Been without a scope for months until Jozzer was kind enough to give me a small 4ch color scope... then I came across this faster one (when it rains it pours)
But anyway - look at how beautiful those waveforms are. You see how clear the problem is? It shows up in both the phase and on the gate so I knew it was in the drive circuitry. Turned out that a little blob of solder floated over those two via's that drop between the low side drivers and the high side drivers down the middle of the board. (the two that have to jump ground). This basically injected 100V right into the middle of all the 2Y transistors. Had to replace the high side 2Y, low side 2Y, and a couple other small parts. At one point I am going to share a guide on how I troubleshoot controllers.... it is a frigging retarded way but it works for when you dont have a schematic or for when you dont understand how the circuit works... basically it is just a matter of taking a bunch of measurements and comparing them to what you expect... like a 2.2K here, forward junction there, 15V zener here, jumper cap there...
So I got it working and did a bunch of 80A rips and now it is time for 150A DC 300Phase I swear to god today.
BTW: Totally heated up my Cro on just 80A yesterday Even in a 20" wheel these are NOT indestructible guys... I will end up blowing mine I can tell.
So it has been a while since I have posted any video. My Father in Law caught a few of the GreenTime 100V 50A test runs on my G2 phone. Video is shit but it still gives a very good accounting of how a cro does on 100V 50A in a 20" tire on a trike.
5 short CroMotor KMX movies on Google+
This is a pretty good one - Google+ sucks for watching multiple movies: https://plus.google.com/105649453389174374894/posts/Sf5QjzTZzA8
edit: There should be 5 or 6 movies I dont know wtf is up with Google+ and how to properly show them... it seems like the hyperlink keeps changing grrr...
Matthew and I put in some hours on the 24 fet controllers. I still have not programmed my Farfenwagon up past its original 80A. I need to install the software on my computer and get too it. Here are some build pics
This is how we start them.... by this point there are actually hours of work. We had custom cabling harnesses built up in China so as to be plug and play with all previous equipment I have sold (ebikes.ca standard) which warms my heart. We do all the work ourselves... soldering every wire, every fet, drilling every hole.
Power
Phase
Hall
throttle
3spd
cruise
reverse
programming
regen/ebrake
CA
Power switch
Doing batches of 10 to maintain sanity.
-methods
Here are some troubleshooting shots from the Farfle controller that I botched up. In order... Phase A, Phase B, Phase C.
View attachment 2
Yea.. I know that scope is an antique but it is 100MHZ and I got it for free. My precious 350Mhz 4ch Tek died a sad death of electrolyte drowning on the caps. Been without a scope for months until Jozzer was kind enough to give me a small 4ch color scope... then I came across this faster one (when it rains it pours)
But anyway - look at how beautiful those waveforms are. You see how clear the problem is? It shows up in both the phase and on the gate so I knew it was in the drive circuitry. Turned out that a little blob of solder floated over those two via's that drop between the low side drivers and the high side drivers down the middle of the board. (the two that have to jump ground). This basically injected 100V right into the middle of all the 2Y transistors. Had to replace the high side 2Y, low side 2Y, and a couple other small parts. At one point I am going to share a guide on how I troubleshoot controllers.... it is a frigging retarded way but it works for when you dont have a schematic or for when you dont understand how the circuit works... basically it is just a matter of taking a bunch of measurements and comparing them to what you expect... like a 2.2K here, forward junction there, 15V zener here, jumper cap there...
So I got it working and did a bunch of 80A rips and now it is time for 150A DC 300Phase I swear to god today.
BTW: Totally heated up my Cro on just 80A yesterday Even in a 20" wheel these are NOT indestructible guys... I will end up blowing mine I can tell.
So it has been a while since I have posted any video. My Father in Law caught a few of the GreenTime 100V 50A test runs on my G2 phone. Video is shit but it still gives a very good accounting of how a cro does on 100V 50A in a 20" tire on a trike.
5 short CroMotor KMX movies on Google+
This is a pretty good one - Google+ sucks for watching multiple movies: https://plus.google.com/105649453389174374894/posts/Sf5QjzTZzA8
edit: There should be 5 or 6 movies I dont know wtf is up with Google+ and how to properly show them... it seems like the hyperlink keeps changing grrr...
Matthew and I put in some hours on the 24 fet controllers. I still have not programmed my Farfenwagon up past its original 80A. I need to install the software on my computer and get too it. Here are some build pics
This is how we start them.... by this point there are actually hours of work. We had custom cabling harnesses built up in China so as to be plug and play with all previous equipment I have sold (ebikes.ca standard) which warms my heart. We do all the work ourselves... soldering every wire, every fet, drilling every hole.
Power
Phase
Hall
throttle
3spd
cruise
reverse
programming
regen/ebrake
CA
Power switch
Doing batches of 10 to maintain sanity.
-methods