My son had a wipe out today. Lots of road rash but the helmet worked. He said the board slowed down for a second or so, then a real sudden acceleration which threw him to the ground.
It’s the Flipsky VX1 remote, Flipsky ESC and 6384 Motors. Are there any settings I should modify or check to stop sudden accelerations from being possible? I’m going to change out all of the flipsky stuff. Motors have been fine but he’s lost bluetooth connections a few times and now this…
Strange, VX1 should default to neutral if a cutout happens. Maybe the receiver wire or connector is damaged?
I’ve had similar experiences with receivers not being securely connected
Go read through this and the replies below, check the PCB for the missing components.
Also check the 3 potentiometer cables on the pcb as well as the potentiometer pins itself
what’s this BLE connection about? the flipsky vx1 remote uses 2.4GHz signal, and also what @xsynatic said above 
a few things at play here
Also plug it into the PC or check telemetry devices for any faults recorded.
Keep in mind that faults will be deleted if the vesc got shut down, except if your logger has recorded them prior.
Sounds like the connection was interrupted (slowdown) and then reconnected (sudden acceleration). If there are no mechanical problems that were already suggested, I’d upgrade the antenna or install a receiver that has a bigger one.
thanks to each of you for the suggestions!
Ive had a cutout and delayed acceleration from it on my vheap ass ppm mini remote from signal interference in downtown. Happebs at the exact same spot everytime, could be that?
This sounds very similar to what happened to me when I broke myself about 18 months ago. I was using a VX1 albeit over UART with a Unity which brings about a whole other set of potential problems.
I use VX2s daily because I am either stupid, stubborn or lucky but I have never experienced the behavior you described using the VX2 and I have three of them. I find that they have a more solid connection and I like the ergonomics.
I will not build another board using the VX1 under any circumstances. That remote was at least partly to blame for my accident and I think the sudden power loss and unintended acceleration are a result of a weak signal and bad behavior during disconnect and reconnect.
The FS VESCs are hit or miss for QC but if you buy on Amazon and get a good one they can actually be pretty reliable. I have a 10S4P board and mounted in the optional metal cases I have a set of 4.12s that have probably done at least 2-3K hard miles.
Of all the FS products I am actually most pleased with their motors.The battle hardened 6374s are some of the most reliable motors I have used and have outlasted several TB 6380s of mine. I will probably catch a lot of flack for saying this but that has been my experience.
Good luck rebuilding and happy to hear your son had a brain bucket on!
Was this right after letting off the throttle? Or during cruising/with throttle engaged.
He said he had the throttle engaged. A mild slow down he wasn’t expecting and before he knew it, the board accelerated out from under him.
What everybody else posted is much more likely, but it could be a ramping issue.
A loose white wire on the PWM (“PPM”) can cause this exact symptom.
Sounds like the known wire problem to me on the vx1. The thumbwheel somehow “triggered” the wires.
How old is the remote?
those variable pots are not eternal, when they do ware out, they can be really iffy, spitting out inconsistent values due to bad connection inside the pot.
Software wise, if you havn’t taken proper care sampling the voltage that decides the acceleration output, something like you describe, can happen.
The trampa wands f.e usually say something like: warning bad pot! when this happens.
doubt flipshit has any fallbacks.
The wands do seem to spit this error pretty quickly.
Always able to keep riding though.
Replacing the pot is also not a walk in the park
if you have a soldering iron its literally 2 minutes.
Depends who’s operating the soldering iron LOL
I guess 
