I went for a nice ride on the south seawall to buy the best fish 'n' chips from Go Fish in Vancouver. I'm pretty sure Britain has way better fish 'n' chips though.
I stopped along the seawall on a bench to eat my meal, so good!
A man with a little girl( his daughter) stopped and asked me about my suspension onewheel, seems like he knew a lot about onewheels.
He finally introduced himself as Ondy Ma, the founder of Surfwheel, he was quite interested in my board. I went on to tell him the original "wood" Surfwheel that was the first onewheel I ever vesc'd with a Trampa 6 .
Funny you never know who you meet.
Best posts made by Lemur
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I met an interesting person
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Pint controller repair
I took a Pint controller, both boxes and a stock battery but no bms in part trade at $50 value. However, the controller suffered damage from a vnr that shorted out.
Testing the controller revealed a massive short that blew the fuse on my test harness.
Probing with a ohmeter showed a short between a phase connector and ground, so further testing came up with shorted mosfets controlling that phase connector.
I didn't have new mosfets, but I had harvested a few used ones, it was straight forward hot air replacement. I ordered new mosfets now TPH2R608NH
The controller works well now and been patched with Rewheel.
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RE: GTS Teardown by TFL
@lia I was cringing when they were poking their fingers in the bms area.
I don't think they know that "voltage'' symbol and orange cable means high voltage that can kill, all Jeff said was "cool orange cable".
Orange cables in hybrid and ev cars means " don't touch, don't probe, don't disconnect".
I worked as a government certified auto mechanic for road service CAA -Canadian Auto Association and we had auto makers put on seminars on their ev's all saying don't f with orange cables.
I know there's a argument about AC high voltage is more dangerous than DC high voltage eg. Edison vs Tesla, however I would be really careful with high voltage of any sort.
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Finally got a chance to use Lia's Px battery box
Since there's a renewed interest in the Rewheeded OG Pint , it's time to expand the Pint range beyond the JW/Chi battery.
I had Lia's battery box printed up last year, but there was no real advantage past the Jw battery as I hated riding the Og Pint with it's wicked pushback, but with Rewheel, it's my favorite board.
I followed the writeup in Reddit, I had to open up two low mileage Pint batteries to salvage 30 cells. I have to buy a bit of large blue shrink wrap to make it look nice.
https://www.reddit.com/r/onewheel/comments/z75ivc/built_a_pintx_battery_for_the_pint/
But seriously, does the PX rear bumper make my butt look big? -
Nightmare repair on a 4206 XR
A fellow local group member asked me to resolder the footpad sensor connector in the controller, he brought in the controller only, already taken apart, I replaced the footpad connector as it was too badly damaged and reflowed the hall connector.
A week later he had a code 16 and again asked me to repair his board, this time he brought in the complete board. The poblem was broken wire in the harness.
After reassembling the board, now a code 3 (over voltage) code came up, I had to open up the contrller and he had used thick silicone insted of flowable silicone.It took an hour just to open the controller up and clean up the mess. It looked like he had damaged the 80v cap and the inductor during his assembly, but replacement of those parts did not cure the code 3. I now had to go into the battery box, no thick silicone on this, I used my test bms and the code 3 was gone, so the problem in in his bms, after consulting a bms repair expert, he advised to check the small capacitors to the left of the Max chip as they get knocked loose, however they looked fine, but the caps were coated with a real thick coat of conformal.
I used a toothpick and poked around the caps to remove the conformal and two caps came off with the conformal. I resoldered those back on and the code 3 was gone.
I rode the board for a few days and all seemed to be fine, but that is not to be, yesterday, I tried to test ride it again and a code 16 came up. I opened up the controller box again and test contiuity on the bms data wires and all was fine.
Then I used my test harness and the code 16 was still there.
I then used my test bms and the code 16 was gone, so the problem is in the original bms. I checked the bms write up and looks like the Vp1786 transceiver chip may be the problem, I had a few of those chips so no harm replaceing it, after scaping away the thick conformal, the chip pretty well fell off, two legs came unsoldered, replacement was straight forward but had be be careful not to lift the solder pads. No more cde 16 after that chip replacement.I went for a long ride and turned the board on and off many times with no trouble codes.
Those early 4206 bms's were rumored to be troublesome, also if you need to replace the controller lid seals. I used thin double sided tape, but run your fingers over the part of the tape that you dont want to stick to the plasic case. -
RE: Onewheel GT 6.5 inch tire solution (hopefully)
@ed_co Did the conversion today, I have to make another shim as the present one is a little too thin, leaving too little axle endplay. It runs ,but can't upload a video.
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Machined Pint end cover
I machined this 6061 aluminum Pint end cover while waiting for the Pint 357 skeletons to arrive. I really have to buy some Ti fasteners.
No cnc involved, just mind numbing measuring and hand machining. -
RE: Tfl Enduro tire
@ed_co No, I don't have cad capabilities, sorry. I'm the last of the old school that draw plans on a napkin and figures out the procedures and machining in my head.
My lathe and milling machine are all manual with DROs.
I finished the offset axle project today.
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New rails for a Pint showpiece
These new 357 rails are way too nice for a everyday rider.
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RE: GTXR conversion- version 2
@glyph I've got the shims made, I'll get them in the mail shortly.
Latest posts made by Lemur
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Gen 1 suspension board revisited
On my gen1 suspension which is Xr controller based, I had a strange buzzing on "delirium" mode while moving almost like harmonics, but quiet on "mission''.
I thought it was the brass swingarm bushings and I changed the brass for delrin plastic bushings and the harmonics are still there .
Since the motor is no longer used as a cross member to tie the rails together, the rails are only tied together with the plastic controller and battery box, which results in a weak chassis, torsionally.
I also used a Kush front footpad which is very flexible.
The solution turned out to be a .125" aluminum plate to tie the rails together with 4 extra 10-32 screws to stiffen up the rails, all buzzing is gone on "delirium" , my gen 2 had no harmonics as it uses Bash bumpers which have extra brackets that stiffen up the rails.
Now I can incorporate plates for the front and back in my present models and in the next design which may be dual shock for "clydesdale" (heavier) riders.
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Adapting a Superflux to run in a XR, GT and maybe a GTS(not tested)
I posted on FB too
Requires a moderate skill level involving a bit of dremel or machining, and soldering.
Parts needed 3 x 41f hall sensors, OW hall pcb board from a HC stator or a Pickles hall pcb. I have not tested The Pickles hall pcb, I used an OW one. I also used JB weld to pot the 41F halls and custom axle blocks, but aftermarket axle adapters are available. Wiring has to be custom made, in my case, I bypassed the stock GT motor connector, used 12 gauge phase wires with bullet connectors and custom hall wires all coming out the side of the controller box.
That's just one way for the wiring, the stock motor connector can also be adapted, but I didn't like the wimpy stock connector.
Very important, you must switch the yellow and green phase wires.
I have tested this mod on Xr, GT, and Vesc, I have two SF motors modified this way and have performed great as this mod minicks a HC motor but is more heat tolerant.
I have not tested this on a GTS as I don't have a GTS.
LInk to Pickles hall pcb https://pickleworks.ca/.../fudged-hall-sensor-replacement...
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A word of caution about vesc/controller capacitors
I have a Thor vesc in my 20s2p board and it always had a inconsistant shutdown with the momentary switch.
A new firmware just came out from Surfdado to retify the shutdown problem, I always use usb to update vesc firmware and BT for other changes, since I had to open up the controller to plug in, I found a capacitor lying at the bottom pf the controller box.
After disassembling the vesc to solder the loose cap back on, I went to plug the cap back in the cb, the loud "crack' and spark that jumped really woke me up to say the least.
That loose cap stilll had a charge even after at least 2 day since I rode the board, so always assume a cap is charged!
Luckily, the Thor was lid mounted and the cap didn't touch the vesc circuit board, I resoldered all the caps and hot glued the caps together.
Unfortuneatly the new firmware with the bulletproof shutdown didn't work on my Thor as it was a prototype that I was charged full price. -
RE: DIY your onewheel with BMS
@jack-yang I have a couple of Maxkgo bms's in my builds, the Zbms was always out of stock. the Maxkgo work fine and balances the cells nicely, the only downside is the balance wires and the jst ph connector as they are made of low temperature materials, very easy to melt with a soldering iron, doesn't take much to crush the balance wires. I recommend they be replaced with quality wires .
I had a couple of evaluation "Pickles" 15s and 18s drop in bms, but they never charged the cells above 90% and two 18s-20s bms, but those two instantly "smoked" upon power connection. I'm pretty sure I fallowed the hookup sequence. -
RE: Hacksmith's fuel powered Onewheel
@lia different thinking !
I can carry this and plug in a charger ion my plus. Haha I -
RE: XR rear LED Pinout
The red leds use orange for positive and grey for negative
The white leds use yellow for positive and magenta for negative .
I'm not sure you can use the Xr rear light strip for Thor as I believe the Thor light controller is for rgb(w) . -
RE: Ubox100 XR and Pint build
@notsure I would like to, but 100 v vescs are limited right now, I think the Tronics x12 is about the only choice @ $450 us, too pricey at the moment.
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RE: Ubox100 XR and Pint build
@lia I redo or update some of the builds, but I have 6 ready to ride at a moments notice , 4 in storage and a whole bunch of Pint , XR controllers.
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Ubox100 XR and Pint build
Finishing up a Xr and a Pint Ubox100 controller box. I just used front headlights from a dollar store wall light 3v, and they are potted in industrial epoxy.
The gland adapter is custom machined .778"x16tpi, unfortunately, the shine will tarnish under the footpad.
They will be 84v builds.