Gas station without pumps

2021 March 28

Electric lawnmower repaired yet again

Filed under: Uncategorized — gasstationwithoutpumps @ 19:55
Tags: , , , , , , ,

In Vaccine vested! I reported

I also took apart the lawn mower to see it if is fixable.  As always, it took me a long time to clear out the grass packed into the recessed screw holes to get the cover off, and a long time to vacuum all the grass out of the interior of the mower.  When I did finally get access to the motor and electronics, I determined that the bridge rectifier had failed again—this time with a short circuit instead of an open circuit.  I’ll buy another GBPC5010-G‎ 50-Amp bridge rectifier, and see if this one lasts a little longer.

There is one mistake in the quoted section—the first failure of the lawnmower (back in 2017) was also a short circuit.  The new behavior was identical to the old.

When I got back from Berkeley today (where my wife and I were visiting our son), I found the rectifier and a couple of other packages that had been delivered on Friday sitting on our porch.  I took apart the lawnmower and replaced the bridge rectifier.  I verified that the old rectifier really had shorted out two of its diodes, so I was pretty confident that I had fixed the problem and I put the mower back together.

It still didn’t work.

There was no longer a short circuit that blew fuses, but the mower just ran for a few seconds and died, as if the blade were blocked.  With the mower unplugged, I could turn the blade by hand, but took the opportunity to chip some of the dried-on grass from the bottom of the mower anyway.

After removing the cover again, I inspected the motor more closely, and I decided to take off the top plate of the motor (which holds the brushes), to see if there was anything wrong with the rotor or commutator.  The commutator looked very dirty, and it looked like the carbon from the brushes (or perhaps some carbonized grass) had gotten stuck between adjacent plates of the commutator, so I scrubbed the commutator with an old toothbrush.

After I reassembled the motor I tested the mower without replacing the cover—it seemed to work ok.  I replaced the cover, and lawn mower worked just fine.  I was too tired to mow the lawn (very little sleep last night, and the trip back from Berkeley had taken 6 hours, rather than 3 hours, because of BART delays, the BART train we were on going out of service, and missed connections), but I should be able to mow the lawn sometime in the next week.

Incidentally there was another error in Vaccine vested!: the 500 is a “Rapid bus”, not light rail.  It does provide a pretty quick connection between Diridon station and the new end of the BART line at Berryessa. It was also free, because VTA is not charging for transit until April 1.  I could have ridden the Highway 17 Express for free also (because I’m old), but I just took their half-price offer for regular passengers.  I did use my new senior Clipper Card on BART for the first time, though only on one leg of the trip, as I had some money on my old regular Clipper Card to use up.  The whole round-trip to Berkeley cost only about $17, which is about what it would cost me with all the senior discounts.  I don’t plan to take senior discounts on the local buses (SCMTD really needs the money), but I will take them on BART and VTA, which have a much bigger and wealthier tax base.

2017 September 23

My son returned to college yesterday

Filed under: Uncategorized — gasstationwithoutpumps @ 21:31
Tags: , , , , ,

I’ve been wandering around the house today, cleaning things up and generally being a bit adrift, in part because my son has returned to UCSB (where he will be a senior in computer science this year) on Friday.

His trip back was a little different from what was planned.  It started out as planned, with him catching the 7:55 a.m. Highway 17  Express bus to Diridon station in San Jose, where he planned to wait for the Coast Starlight down to Santa Barbara.  We noted before he left that the Coast Starlight was running about 3.5 hours behind schedule (a common occurrence—hence the nickname the Coast Starlate).  When he tried to check his luggage at Diridon station they recommended that he change to the 4790 Thruway bus to San Luis Obispo and take the 790 Pacific Surfliner the rest of the way, because the Coast Starlight was running so late.   He did that, though he much prefers the comfort of trains to buses, and it turned out to be a good move.  He could get out at Goleta, rather than Santa Barbara, cutting out about 10 miles of ground transport at that end.  He ended up getting to his new apartment in Isla Vista about the same time that the Coast Starlight left Salinas, so he saved over 6 hours (the Coast Starlight never made up the delay—by the time it got to Santa Barbara it was 4.5 hours late).  I don’t know whether he’ll take the Pacific Surfliner in future, or even try the Greyhound (which is even faster, as there is a direct bus between Santa Cruz and Santa Barbara)—it depends on his willingness to trade off comfort for speed, as the Coast Starlight is a very comfortable way to travel, even if it is ridiculously slow.

One thing I did today was to box up 52 pounds of stuff (mostly clothing, but also bedding, some electronics, and dishes) to ship to him in Isla Vista (via UPS ground, about $40).  He only took about 75 pounds of luggage with him, because of the Amtrak 50-pound limit on single items for checked luggage (though the Thruway bus+Pacific Surfliner switch meant that all his luggage ended up being carry-on).  Because he is living in an unfurnished apartment this year, he had already ordered furniture (a bed and mattress, anyway) from Amazon, and his roommate had been there to receive it, so he knew he had a bed waiting for him (though he probably had to assemble it).

You’d think that by the 4th year, I’d be used to having him go away to college, but the transition each fall is still a little unsettling—I’ll miss our technical conversations.  Oh well, within a couple of weeks I’ll have his bedroom set up as a workshop again, with the drill press and scroll saw back on the table, and the stuff he left scattered on the table packed away in boxes.

I’ll need the workshop this fall, as I need to make more lab setups for my course (I’ll have lab sections of 50 students, so we’ll need 25 lab stations, instead of just 12).  I’ll also be sitting in on the Mechatronics course at UCSC, which has always sounded like a lot of fun, but which will probably be close to a full-time job for a person to do alone instead of in a 3-person team. My sabbatical this fall will be spent on the Mechatronics course, continuing revisions to my book, and building the lab setups for winter and spring.

2010 October 28

Don’t trust Lincolnland Express bus

Filed under: Uncategorized — gasstationwithoutpumps @ 20:40
Tags: , ,

On Sunday 17 October 2010, my family and I needed to get from a family reunion in Champaign, IL (after the wedding of my nephew the day before near Danville, IL) to O’Hare airport to catch a plane. On a recommendation from my father, we booked three seats on the Lincolnland Express bus from Champaign to O’Hare.  He had had good service taking the bus between Bloomington and the Chicago suburbs.

We did the right thing, booking our seats a week ahead of time on the Internet, as the bus company told us to do on the web site.  The website also suggested that we call to confirm that the bus we were taking was running, so we called the night before and were assured that the bus was running.

When we got to the Illinois Terminal in Champaign, we waited around for the bus. We were pleased to see that Illinois is still building train stations, as California seems to be more in the mode of tearing down old ones and replacing them with useless bus-stop-style places to wait in the cold and the wind.

When the bus did not come at the scheduled time, we waited some more. When it was 15 minutes late, we called the bus company and again inquired about the bus. They assured us it would be there shortly. It finally came over half an hour late, but we had left enough time at O’Hare that if the bus ran just half an hour late we would be fine, so we boarded the bus.

Illinois Terminal, train station, Champaign, IL

Illinois Terminal in Champaign. Image via Wikipedia.

Unknown to us, despite 3 calls to the bus company specifically asking them, the company had canceled our bus and merged it with the next run which had more stops and took much longer to get to O’Hare. The company did knowingly cancel and merge the bus runs, since the driver had one list of passengers combining the ticket sales for both runs.

That bus stopped at every shopping mall between Champaign and O’Hare (and several that were far out of the way).  The bus ended up 45 minutes late for the next bus after ours, which was an hour and 30 minutes late for when we had planned to arrive at O’Hare.  Our plane had started boarding before we got to the security line (which was quite slow at O’Hare), so we missed our flight  by a lot. We were not the only bus riders to miss our planes—there were at least 4 others on the bus who got to the airport an hour and a half after the scheduled time, and probably missed their planes also.

This all was irritating enough, but what made it worse for us was that we had had an alternative, if the bus company had just been honest with us on any of the times we had called them.  We could have begged a favor of my sister, who would have driven us from Champaign to the airport.  We would have owed her a favor, but we would have made our plane with hours to spare.

As it turned out, we had to rebook our American Airlines flight, taking a less convenient flight that changed planes in Dallas and got the last plane into San Jose the next day (there were no more that night, and all the reasonably convenient flights were overbooked).  This cost us $165 plus 75,000 frequent flier miles (which I estimate as worth about 1 cent each, so about $750 worth of miles).  We only got $165 back on the unused tickets, which could not be applied to the rebooked flight, but only as a credit for some mythical future travel.

We also had to pay about $155 for a hotel room near the airport, and about $60 extra for airport food the next day.  Luckily, we were able to change our ground transportation in California, and we did not have to pay double for that. So we’re out of pocket about $1000 for the delay (in addition to the $45 each for our tickets), making this the most expensive bus ride I’ve ever taken.  Given the 2-page disclaimer they make you sign when you buy a ticket from them, I doubt that it would be worth the effort to try to get any recompense from them.  It is probably more useful to go to various travel advisory services and post warning messages not to believe them when they say that their buses are running on schedule.

I was also able to contact colleagues and could get coverage for the two classes I missed by the unexpected delay.  Unfortunately, the delay also meant I missed the field trip to MBARI, which I’d been hoping to join this year.

Bottom line: Linconland Express is not a trustworthy bus company—take them only if you don’t care when you arrive.  The next time I have occasion to go to University of Illinois in Champaign/Urbana or Illinois State University in Bloomington, you can be sure that I will not be giving my business to Lincolnland Express.

%d bloggers like this: