An update;
Took the time to put some balancing weights on my tires. Probably messed it up though because my tubes are slimed.
New D100s arrived! Thanks @YUTW123 for sending a replacement after my last one exploded.
Internal Inspection
I took my new unit apart(careful to not destroy the thermal pads) to inspect for bad solder joints. Didn’t see any.
First step to install was to finish cleaning out the enclosure.
The nearest p-group took the firey blast to the face. It looks bad, but I think it’s fine, I hope? Looks like mostly burnt fish paper and kapton tape.
I’m eager to ride the board so I just scraped off the easy stuff and put a few layers of Kapton overtop. I should probably pull this all apart and re-apply the fish paper at some point.
I cleaned out most of the cancer dust that I could, but a lot of it was stuck on the rough carbon fiber. I did find a random ball of solder from the last vesc that was bouncing around
Controller goes in, didn’t even need to solder anything. That’s a first.
Programming went smoothly. pretty conservative settings right now;
5.02 firmware, FOC Hall sensors.
90/-60 motor amps
100/-50 batt amps
300 abs max, slow abs_max off.
I’ve got a USB A extension cable running across the room from my desktop to my workbench, which makes doing vesc configurations super quick.
It’s tight inside, there’s just enough space.
Good news, she lives!
Wouldn’t be a board I built without scraping issues lmao.
Feels so good to ride! Sorry, no videos
Too bad, have a cat picture.
We aren’t done yet, though. there’s still some things to fix-
- Properly mount things in/on the enclosure. The Power button is taped to the top and the charge port is zip tied to the outside (and drags on the ground when turning)
- Neptune BMS config (I bought a super cheap android for this). Mount the BMS switch somewhere accessible, if needed?
- Fix the scraping issue? add a few truck spacers.
- Add fuse to charge port
If I feel like it, I might add Minnie/Megan? The software ecosystem they’ve got going on right now is pretty neat, and I love it on Ankle Wreacher.
Two nights of track nights later;
This board is a BLAST. Feels soo good to ride, it’s so “throwable” around track. I’m definitely going to need to experiment with bushings on Ankle Wreacher to get closer to this feel.
Track efficiency isn’t too bad, I average around 50~65Wh/mi.
Tuesday night, did some racing with @ShutterShock (and the rest of the SD crew). @ShutterShock has a very similar setup on a nazare deck, but also basically everything is the opposite of mine. Feels like a entirely different board.
Wednesday night, I did probably 5 miles of track racing on Nothing Fancy before we got kicked out of our lot. We pivoted to a short group ride to get some food. Nothing Fancy’s first!
Really wish I had a Megan on the front, that purchase really might be in my future. The road was rough, and the board really wanted to “walk” on me. Not wobbles, but something different. Might need to tighten up the bushings a bit? Air down the tires? Didn’t get a chance to experiment…
About a mile in, I felt my rear tire get a bit weird, almost like a flat tire. I looked back, and it still looked fully inflated? Must’ve been the road.
~20 seconds later, I heard the sound of an unrestricted motor spinning up. I look to Brent next to me, thinking he just spun a belt. Took me a good 10 seconds to realize it was my board?! What?How? Spun a pinion? It’s key’d… Did I strip my steel gears? I slowly come to a stop, and immediately see the issue.
A wheel nut and bearing were just… gone? The motor spinning was from the hub sliding off the axle
Thank goodness for tight tolerances on the axle and hub that kept the remaining bearing hanging on for so long. Could’ve been way worse- I probably rode 200ft with no wheel nut and only the single bearing! I’m hella lucky.
I was fortunate to be riding with such a cool group of people, who immediately started searching the whole area for my lost bearing and wheel nut. Couldn’t find either part though, unfortunately. Probably was another 150ft further down the road and bounced into somebody’s lawn
Getting back home, the likely issue is obvious in hindsight.
The axle just barely doesn’t engage the locknut.
Very odd that it took 20 miles of riding to be an issue, but whatever. It be what it be. Loctight it is.
I have a replacement M12 wheelnut on hand, so I’m just waiting on a replacement 12x28x8mm bearing. My board is going to have nice Apex bearings with one black sheep amazon bearing
So eagar to be riding this board again. Amazon shipping can’t be fast enough.
Edit: Link to next major update