Posts made by Lemur

@lia It still blows me away with all the detail and everything is accurate to scale, if i never knew in advance it's half scale , I would swear it's full scale.
Truly beautiful work!

@loaffette Hope you get the the Ubox set up, I had a sutdown problem with my MK8 150 with a shutdown while riding. Apparently, the long press firmware does not have a default auto shutdown while idle, and if you set a shutdown time on the LP firmware, it may shutdown while riding when the shutdown time expires, although it's supposed to reset to no shutdown time after rebooting.
I switched to the short press firmware just to be safe and had zero problems since and running any lights on the MK8 is risky, I removed light on my MK8.

@ikaruspint It should be no problem pairing.

@ikaruspint "Disconnecting a Onewheel BMS (Battery Management System) involves disconnecting specific connectors in a particular order to avoid potential issues. The general procedure is to disconnect the balance connector, followed by the battery's XT60 connector, then the communication wires. It's crucial to wait after disconnecting the balance connector before disconnecting the XT60 to prevent errors. "
As long as the balance connector is disconnected first and battery XT60, next the other connectors can be disconnected in any order.
Remember the for reconnecting it's the opposite, the balance connector is last, also wear latex or rubber gloves as touching the bms circuit board with your bare fingers can trigger the bms to turn on.

Looks like TFL has a purposed minibike that can be triggered to do wheelies, much like a onewheel. I'm thinking of building a Hypercore or Superflux minibike with vesc control. I dugged out a NOS minibike kit I bought 10 years ago and forgot I had it.
https://wheeliefunbike.com/pages/wheelie-fun-bike-v1?fbclid=IwY2xjawL50MBleHRuA2FlbQIxMABicmlkETExckdjNU5DakY2eVd2OW43AR6sblUolG4Vetv-Kp5KtVE1Hb4hgfCJNSIfi7e2TpjnrbBms2-Kn5q1kGL3LA_aem_1pi4EkjQrcZ9gxcVCyfZeQ

@h7per Your original problem may have been a broken wire inside the main harness, these XR harnesses have kinks in the small wires that can break, the other is connecting the xt60 even for a split second may have destroyed the 4209 bms.
Can you get the main harness from the person that sold you the 4209 controller and bms?

@aiden1983 At this point I cannot give you any good advice, just guessing.
Just be aware throwing parts at it may not be cost effective and may cause a massive short that can cause a fire, ask me how I know.
I always plug in the battery outside after a repair.
Maybe look for a working Pint controller circuit board instead. Sorry.

@aiden1983 Do you mean there's still a short between the source and drain with all the mosfets removed?

@aiden1983 Sorry, I got mixed up with another post asking about a Pint bms.
These are the mosfets you need.

@ikaruspint The conformal coating is soft and is easily removed with a toothpick, not use metal tools.
The discolored coating is normal as the conformal coating goes cloudy under heat especially at the Xt60 solder points.
Use a heat station for smd component removal, the solder on most factory circuit boards is non lead and reqiues more heat than leades solder.

@ikaruspint Here are the little mosfets that affect cell balancing.

@ikaruspint Unfortunately , I have only one Pint BMS left that I use for testing, seems like Xr, Pint BMS's are getting scarcer.
If you're in N. America, try Facebook.

@aiden1983 Probe the areas red "x" to red "x" and green "x" to green x with a ohm meter set to 200k and there should be no continuity.

@lemur Almost done, I need to get the raw metal parts painted or powder coated.
Rides like a dream too, totally predictable behavior. I'm using a Ubox 100v 100a with 22s but I only weigh 155 lbs and set full charge at 95%.

@lemur Update.
Pint suspension build with Ubox 100v.
Only one in the world, almost complete, just waiting for my Molicel cells so I can build the 20-22s battery and make a simple main battery harness.
The supension metal pieces are still in the raw, will be either painted or PC.
-Ubox 100v 100a controller

• Techrails Stiletto rails
• Px battery box
• custom printed mini fenders from Floatershack
  This build is based on my proven XR suspension models, except the components are lighter gauge as the XR suspension was overbuilt.
  The stock controller box was shortened to make room for the swingarm.

Since the XR suspension builds have proven bulletproof for up to 27s for the last couple of years, it's time to build one to fit the Pint.
It's just a start of the build but I'm confident that this will work, this design is based on the XR design, but scaled down with smaller com ponents.
I have Lia's PX battery box that has been used in another build.
Ubox 100v 100a and will be 20s.

@kusosan I switched to the Mk8 because I'm running 27s now and 27s because Onewheel GTS chargers are perfect for this application.

@syanelli Charging does not do anything to the controller as the charge negative goes to the bms.

@syanelli Here's a simple crude diagram, but basically I eliminated the positive charge wire as it is tied into the controller positive from the charge port.