Mower Rework

Installed the replacement controller for the blades. Still no idea what happened to the old one. The new one doesn’t have an LED display, which I really don’t need. I was tempted to leave the switch out, too, since the speed knob also is an on / off switch, but decided to leave it in. Easier to reverse the blades, which are sharpened on both sides. Had to cut some new plastic for the dash, but I am getting good at that. I also realized that my kill switch is “normally open”, the opposite of what I need, so I ordered a new one.

On test I heard a pop and smelled something burning. Damn. I had wired the new controller battery outputs to the motor terminals. It was labelled in only Chinese, but it matched the old one and I could read the English on the circuit board underneath. Totally my fault. Seems I blew a 30A fuse on the battery cable that I put in just for extra safety. I am becoming a big believer in safety.

Swapping the fuse, the motor controller still works, but haven’t hooked up the blades to see if I damaged anything. Also been studying the brake and the blade deck lift mechanism. Both are big and heavy and complicated. Going electric simplifies just about everything but now I need to re-invent the lift and the brakes. Oh, used some of these German wire connectors. No reason to go back to wire nuts. I’m told to be careful and buy the real German product and not cheap knock-offs.

Electric Riding Mower Blades Dry Fit

Found the nice little 24V 30W motors that fit exactly inside of a 2″ PVC pipe. Took me a while to get around to it but cut and dry fitted the pieces to see how it looks. Bolted on these string trimmer replacement blades that are available from all sorts of vendors for a wide range of prices. Went for the least expensive ones, at $7. I was going to use the same controller as the one for the main motor, but somehow, after I had fully installed it, it turned up broken. So I ordered a simpler replacement controller. I really don’t need the LED readout.

Will glue it all together and wire it up another day. I still need to figure out how to hook in up to the original blade height mechanism. I removed much of it because it was made for a different platform that was maybe 70 or 100 lbs of metal. Looking for a simp!e soultion (as always). Also need a safety cover. Looking at some pie pans, which are metal, but instead might go with some of those shallow plates that go under flower pots. Plastic and easier to work with. Everything is smaller and lighter so no real need for a massive deck. Just something to prevent dumb accidents.

Gumbo Z’Herbs Garden

My father was friends with Leah Chase and used to enjoy going to her special Holy Thursday gumbo Z’Herbs lunch. I regret that I never was around to join him for this event. In fact, I’m not sure I have ever even had gumbo Z’Herbs. I had an idea of starting a small Gumbo Z’Herbs garden which the hope everything would (somehow) be ready for Holy Thursday and I could try to cook up a batch of green gumbo.

I found a good pack of seeds on Amazon with 20 different herbs that matched well to Leah Chase’s recipe. The only thing missing was carrots for their greens. I have since learned that there is lots of improvising in these sorts of dishes and the measurements and even the ingredients aren’t necessarily strictly followed.

My original plan, perhaps born out of laziness, was to mix all the seeds together and spread them in my planter. The more I though about it, the planter seemed a bit small for all of this, so I reclaimed a few pieces of the yard that werent in use, including a patch when my large rosemary bush died in the recent freeze. I actually planted the seeds in separate groups. We will see how this all turns out. Will post a picture of the final gumbo if all goes well.

Raspberry Pi 4 Fail

Recently I moved all my media files from my old USB HDD, which was probably always a bad idea, onto a new 1TB USB SSD. I decided to use the old HDD for backups. Unfortunately during the first real backup, everything failed. It took a while to get to the bottom of it, but it seems Plex filled up my 128GB flash card. I had assumed that would be enough for my files and Ubuntu, but I guess not. It seems lots of temporary files ended up in /var.

When I started this experiment in desktop Raspberry Pi there wasn’t much of a choice. You had to boot from the flash card but you could mount a USB drive. So that is what I stuck with, with my media (photos, videos, etc) on the external USB drive and Linux and home directories in the flash card. Well a year on it seems you can boot from a USB drive, so I bit the bullet and decided to move everything to the USB SSD and boot from it.

After a few false starts (you can’t use Ubuntu 20.04, only 20.10) and lots of time copying files around I got it all to work. Advice for anyone doing this today: go straight to a USB SSD and ignore the flash card. There is a nice utility to load up any OS of your choice from any popular platform (Windows, Mac, Linux). You can be done in a few minutes. The instructions on line require some updating of the Raspberry Pi 4 firmware but I found that wasn’t necessary in my case (maybe I had already updated it). Pretty impressive.

Kerouac Revisited

I had always been a big reader but somehow it was not wasn’t until my second year of college that I found Kerouac’s “On the Road”. Earlier I had run across Hunter S. Thompson’s “The Great Shark Hunt”, already an anthology. It was years later before I even learned of the overlap these two mid-20th century American books had. But this was all before the internet where such connections were harder to make.

I wanted to read the rest of the Kerouac catalog but only made it roughly halfway through. I may yet finish. I confess to having an ebook of “Mexico City Blues” on the pad I currently am typing on (all thumbs, much slower than Kerouac) but haven’t gotten too far with it. All that said, I have since read two or three biographies of Kerouac and have the hardback Viking 50th Anniversary edition of “On the Road” with critical commentary on my bookshelf, a prize possession.

Unlike most books, especially books that are people’s favorites, this one seems to defy discussion. I have found close friends also liked this book, but we never discussed it the way we would discuss writing or music. It was somehow self contained. It was the fully formed view of where post-WW II America was and where it was headed, long before anyone else seemed to realize it.

I undertook a bit of a project recently to re-read some of the favorite books of my youth. I was prepared to be a bit embarrassed by my youthful enthusiasms. Kerouac was the hardest to approach. I liked that book so much when I was younger it would be hard to find out that it was perhaps thinner and lighter than I thought. But I bought the ebook and dug in and it was as good as I remembered, perhaps better (so was, I might add, Persig’s “Zen and the Art of Motorcycle Maintenance”, another favorite of mine at that time).

I suppose Kerouac was always controversial and never easily integrated into the rest of 20th century writing. I don’t imagine he is on many college English class syllabus, or taken that seriously in English departments. Anyway a re-evaluation of Kerouac seems to be underway. Maybe it is always underway. From the Los Angeles Review of Books.

“On the Road,” Again

Electric Riding Mower Drivetrain 2.0: Direct Drive

I finally got around to experimenting with replacing the slow and unreliable chain drive with direct drive. The metal plate supporting the motor came from the front someplace and fits perfectly. I was worried about aligning everything. With six or so degrees of freedom and me with a hand drill, it seemed beyond my abilities. I learmed a trick: drill big holes and use bolts and adjust and tighten up as you go along. The old fenders even fit. Heck, if I went with an expensive lithium battery there would probably be room for it in the back, too. It seems a bit noisy but I’m guessing the 20 year old transmission could use some grease. Unfortunately there isn’t a simple way to do this. I will have to take the whole transmission housing apart. Maybe at some point.

Funny, all the effort with chains and sprockets seems like a waste, but I guess that is prototyping. You try stuff out and try to hop from A to B. Sometimes it works, sometimes it doesnt. Will give it a ride tomorrow of the next day. It’s going to be fast and lots of torque. Will probably hook up the deadmans switch first. Maybe wear a helmet.