Friday, February 19, 2010
Fall
This morning the weather was foggy, but not wet. I looked at the radar and it showed no rain. So I biked to work. About halfway through the ride it started raining... shit! The water-handling abilities of the system at this point is equivalent to putting lithium in water. Fortunately, I had some plastic wrap from my food to put over the primary prone spots.
So yesterday a guy flew his plane into a building. I typically ride right by the building on my way to work everyday... today I decided not to because many people have commented that the batteries on my bike look like a bomb. So today I decided to take the long way around that cluster of fail. Unfortunately, part of my detour was down a very steep hill. As I was braking down this hill, the very top and very back heavy bike decided it wanted to alter its flight path 180 degrees (backwards) and 180 degrees (upside down).
So yeah, I fell. Got a nice deep wound on my hip, my shoulder, etc. Finally broke my phone enough that I'll consider replacing it (it's been through hell for the past 2+ years). The screen didn't crack, but many of the pixels are shot. I'll definitely keep using it for a bit, but replacing it is finally on the radar.
And then there's the bike. It handled the reorientation quite well. The wood I placed on the bottom of the batteries took the brunt of the initial impact. The handle bars spun around and broke the front brake cable (this is the second time this has happened). A couple of the Anderson connectors came off.
Honestly, I'm more pissed that it rained and got everything wet.
And yes, mom, I was wearing a helmet :).
I'm currently taking apart the batteries and putting them in a straight line to solder all together. I'm debating buying 150ish 5A fuses and putting them in between each parallel battery pack connection. In parallel with the fuse I'll put an LED, so that if the fuse blows the LED will light up. This will allow me to pinpoint a cell when it fails.
On that note, another cell failed. 0.0 volts. At this point I haven't had a successful run up to 11amp-hours because of the 2 dead cells and small meltdown. I did get 9.4 AH from the 4 battery packs that worked properly, which means the 0.0 volt cell worked, but not well.
Next time I do this, I'm going to buy A123's much larger (30AH) cells so I can just solder them all in series and never look back.
Pix when I get home.