dna4engr
Rock Crawler
I'll start this by saying I'm usually pretty solid on wiring and don't have issues hardly ever. However I made a stupid mistake and I'm curious if it should have happened or not.
I am wiring up my 6x6 build with a 1/8 buggy esc and 6ws. So I'm using a castle Bec pro for steering.
I wired it as follows - excuse my chicken scratching on the sketch
The end result is I ended up frying the negative wire on the esc pwm cable (the one that plugs into a rx). Only that wire is damaged as I unplugged it quite fast. Rx is fine, Bec is fine. And oddly enough the esc still turns on and arms the motor just missing the rx signal.
Looking at the schematic after screwing it up its obvious I made a mistake. The esc has two batt connectors to run 4s by way of series 2s batts. I loop the one side to run 3s or just 2s. So I basically wired my Bec in series with the positive side of the battery.
That's my fault and a stupid mistake. However, if I had had 4s with 2 2s batts in series wired the exact way I show. Would that allow the Bec to work properly or still fry the wire it did??
Hindsight, I should have wired the Bec at the pos and neg points of the esc instead of the batt connectors.
Second question. How did it only fry the neg wire on the pwm cable? My assumption is that the Bec has much higher current capability and the current was trying to find ground through the little black wire back to battery but the current was just too much for that tiny wire to handle to it became a sacrificial fuse.
This is more of a discussion post. I know what went wrong and I know how to fix it (mamba monster x on order and will be wired much more carefully).
Just curious if my diagnosis is on the right track. And if anyone has ever used an esc with ONLY the signal wire connected to the rx. I'd power the rx with a separate Bec.
Sent from my iPhone using Tapatalk
I am wiring up my 6x6 build with a 1/8 buggy esc and 6ws. So I'm using a castle Bec pro for steering.
I wired it as follows - excuse my chicken scratching on the sketch
The end result is I ended up frying the negative wire on the esc pwm cable (the one that plugs into a rx). Only that wire is damaged as I unplugged it quite fast. Rx is fine, Bec is fine. And oddly enough the esc still turns on and arms the motor just missing the rx signal.
Looking at the schematic after screwing it up its obvious I made a mistake. The esc has two batt connectors to run 4s by way of series 2s batts. I loop the one side to run 3s or just 2s. So I basically wired my Bec in series with the positive side of the battery.
That's my fault and a stupid mistake. However, if I had had 4s with 2 2s batts in series wired the exact way I show. Would that allow the Bec to work properly or still fry the wire it did??
Hindsight, I should have wired the Bec at the pos and neg points of the esc instead of the batt connectors.
Second question. How did it only fry the neg wire on the pwm cable? My assumption is that the Bec has much higher current capability and the current was trying to find ground through the little black wire back to battery but the current was just too much for that tiny wire to handle to it became a sacrificial fuse.
This is more of a discussion post. I know what went wrong and I know how to fix it (mamba monster x on order and will be wired much more carefully).
Just curious if my diagnosis is on the right track. And if anyone has ever used an esc with ONLY the signal wire connected to the rx. I'd power the rx with a separate Bec.
Sent from my iPhone using Tapatalk
