Dispatches from Trowelsworthy Hall

For reasons that are frankly both arbitrary and silly I am known to my archeology pals, and to the Facebook world generally, as "Badger Trowelsworthy".  Yes, yes, technically this is not the name that I use in that pesky real world.  And, yes once again, it is a nominal violation of Facebook rules for which I shall doubtless one day be called to account.

But as I see it, we live in a world where people get to "self identify" as all sorts of implausible things and if you question it you are held to be the lowest form of "hater". So if I choose to view myself as a 106 year old,  moderately disreputable English Lord with a penchant for archeology and a loose connection with Wisconsin, well, who is harmed by the minor alteration of reality?

I enjoy dropping the occasional reference to the ancestral Manse, Trowelsworthy Hall, and to the devious machinations of the distant branches of the Trowelsworthy family in their ongoing efforts to lay greedy hands upon the keys to the place.

Of course in the age of the internet it is difficult to write genuine satire.  Reality is often just as strange.  I should have checked first to see if there was an actual Trowelsworthy family in the UK or its Dominions.  And if there were places extant that would be logical locations for the oft mentioned yet never located Trowelsworthy Hall. Guess I shoulda......

For instance.  Up in Alberta Canada there apparently exists a place called Trowelsworthy Farms.  True, its offerings of chemical and antibiotic free beef, elk, rabbit, rabbit, pork, lamb and goat may not be to everyone's taste.

Also up in Alberta, near a small town called Mirror, we find Trowelsworthy Industries. It seems to be a builder's supply store and by virtue of similar owner's names, must be associated with the Farms.

But if you were looking for a plausible setting for the alternate reality that Badger Trowelsworthy occupies your best bet would actually be in Dartmoor, a wild and lonely area in Devon, UK.  There out on the windswept moors you can walk right up to a rock formation called Great Trowlesworthy Tor.

photo credit Nilfanion

You will of course by now have noted the alternate spelling as Trowlesworthy but in a family of such noble and ancient lineage this will happen from time to time.  An Ordnance map of the area shows another clue..

Alas for those grasping younger Trowelsworthys...I am thinking of you Otteria and Biff...the Trowlesworthy Warren shown above is not the ramshackle Manor House but an area used for keeping rabbits "from medieval times to the 1950s".

Reset

Its been a long haul the last six to twelve months.  I have stuck with three times a week posting all through full time work in the ER, and my dad's long last days, and through the fun but crazy robotics projects at the middle school and FIRST levels.

But these have all cut into my ability to write interesting posts, both from reduced travel and from simple fatigue.

I going to go to a twice a week posting schedule next month.  There's just a lot going on. I am restarting a bit of clinic work then have a couple of  FIRST robotics events that could just plunge head long into the May travel season.

Thanks for hanging in there.

Next week begins March of 2016.  Five years since Detritus of Empire first appeared.  I am approaching 1,000 posts.

After a brief rest I think 2016 should be a very good year for writing.  There will be some of the usual features, back to England and to the excavations at Vindolanda.  There will be more brewery cave hunting and minor league baseball.  I don't do "grandpa" stuff but just having a delightful new generation on hand should help relieve the fatigue.  The "Tacitus MD" category will come "out of retirement" at least for a while.

FIRST Robotics - Progress Report Six

The last two weeks of build season were hectic.  It looked for a while as if we would be done early enough to get a solid week of driving and programming practice in but that did not work out.

Some problems were anticipated.  Our "Crawler Wheels" that let us walk up the sides of obstacles were driven by a simple motor/gearbox that is part of a snowblower.  I kept expecting it to fail under the abuse.  But we just kept on crashing it into things and it kept working.  Eventually we upped the demand on it in various ways.  Finally it did stop working and just gave us a frustrated humming noise.  Open it up and you find:

We had known all along that it contained both metal and plastic gears.  This is a bad mix, as in the end metal  will always win.  Note the chewed off teeth of the white plastic gear.  Time for an upgrade:

Here our main fabricator is working on mounting the new all metal motor/gear box and associated axle.  Sparks fly.

This picture is illustrative.  The new motor is buried deep in a metal cage.  Note the solid welded steel and the "This Side Up" arrow.  We have likely gone seriously overboard on structural toughness.  To test the new front plate I hit it repeatedly with a metal bar.  This looks like something built by Klingons.

Other problems are harder to sniff out.  My son was helping out on a late season Saturday.  Peering inside the robot he noted that a bushing - a smooth metal sleeve that reduces friction - had been put on backwards and was working its way out.  This put the entire drive system at risk of catastrophic failure.  So we had to spend a precious hour and a half doing robot surgery deep in the mechanical innards of the machine.

The red stuff is gear box grease, not blood.  The small white flecks I fear are shaved off aluminum from the output shaft.  Glad we caught this before the whole thing gave out.

We have some difficult to reach areas and I do have concerns that if we must do repairs under time pressure it will not be easy.

But other than that......

We had the machine in completed state in time to take it to a practice tournament three days before the "Stop Building" date.  Here it is in the pit area on its swell new cart.  Having it up at this angle allows for transit through doors and still permits maintenance access to almost all of it.

Less so at the practice event, but at the real thing you spend a lot of time chatting with passersby. Some are just curious.  Some are FIRST officials (at this point all adult advisers take two big steps back), some are scouts from other teams.  Our visitor here looks skeptical.  To be fair, our robot is an unsophisticated tank compared to many.

Since adults are not supposed to help build the machine, and since I in any case lack noteworthy welding, machining or programming skills, it can be fairly asked just what exactly I do.  I organize stuff.  Here is our box of likely spare parts and a stuck on master guide of tools needed to repair and maintain the inner workings of the machine.

And we have tackle boxes.  Small mechanical parts.  Small pneumatic parts.  Electrical connectors.

The practice run went pretty well we thought.  Simplistic tank inspired designs do not break easily. We saw quite a few machines that day with wobbly, flimsy looking elements and yes, parts of them did break and/or fall off.  Having felt a bit guilty about how hard we pushed the kids during build season I walked around the pit area and saw about half the teams with robots that looked way shy of three days from completion.  The most elegant, sophisticated, Marvel o' Technology design can't defeat a stupid, solid metal dumbot if the former does not run.

Here is what the drivers will see at our real event.  The robot goes into mandatory storage tomorrow night.  A well earned rest for a few weeks before we start our event prep on other fronts.....

The Old Green Ping Pong Table Lives On

A decade or so back our neighbor offered us an old ping pong table.  Modern ones are made of cheap fiber board but this was solid half inch plywood. And such a pleasing dark green paint job.

It seemed to us to be the ideal things for "projects".

Over the years we have carved up pieces of this for a wide array of robotics undertakings.  It has become something of a tradition.  Or a good luck talisman.

In our current FIRST robotics project I am encouraging the kids to build in some small good luck charms.  Maybe a box inside somewhere with four leaf clovers or something like that.  But for myself I only want to make sure that one of the last little bits of the ping pong table makes it in.  Because I thought I was down to the last few square inches of it.

But as I looked around I saw it surviving in various places.

In this photo from the middle school "Robot Dragster" project of a few years back no fewer than three pieces of "Pong" can be seen.  The frame of this is still jammed under a workbench in my shop.

Below is a reinforced wheel from a demo bot that dates back to my "Robot Carny" days.  It was designed to be rapidly assembled and disassembled by kids.  See the green paint peeking out?

Various slabs of the table are hanging around as base supports for tools.  This is a metal shear.  I seem to recall several previous uses for this piece of wood as suggested by the random holes in it.

So if it comes to it I guess I can salvage enough bits and bobs of the old Ping Pong table to keep sneaking parts into robotic projects for a while now.  As to our FIRST robot one of the kids used a small, sturdy green square to mount our "power on" indicator.

Brewery Caves - Points of the Compass

In a season where it is difficult to do any real world exploring we have to settle for what we can get. As I wander the internet looking for bits of 19th century brewery history I come across mention of brewery caves in places I am quite unlikely to visit.  Where for instance are the furthest North, South, East and West brewery caves in North America?

South

It would have to be the Kreische brewery in La Grange Texas.  I was surprised, not that Texans wanted beer in the 1850's, but that somebody was ingenious enough to find a way to keep a brewery cave cold in that climate.  The secret of course was a spring of cool water down in the vault.

Today the Kreische site is part of a State Park, and tours of the ruins are offered.  I think the cave is now sealed off.

East

Since the east coast had the majority of the US population in the mid 19th Century breweries and their caves were everywhere.  Picking an east coast example is way too easy.  But arbitrarily how about we give the nod to the Crown Finish caves in Brooklyn New York.

The photo is from a nice article in the Wall Street Journal about a young couple using the abandoned 70 foot long tunnel/cave as a place to age Gorgonzola cheese.  I like Gorgonzola.

West

You can't get much further west than San Francisco.  And tucked in among modern buildings is a curious place called Albion Castle. It was built as the Albion Ale and Porter brewery in 1870 and was reworked as something of a folly castle by a sculptor in the 1930s.  There is a spring cooled cave underneath. There is some good information out there on Albion Castle.  I enjoyed this  article by a Susan Saperstein, and from it got this photo of the caves (credit same to Kaleen Kenning)

North

So where is the furthest north surviving brewery cave?  That's a tricky question.  There were a few breweries up in Gold Rush era Alaska but what with permafrost and all there would not have been caves dug.  You had plenty of ice, and above ground ice houses were more practical.  So I can toss out a few candidates but can't give a solid answer yet.

How about:  Princeton British Columbia?  although you might argue that this has been destroyed by road work it is often the case that it has not been entirely wiped out.  Being a small brewery the caves seem to have been used longer than usual, and of course that whole Prohibition thing did not hurt them.  One suspects in fact, an increase in production.....

In Duluth Minnesota there is a Brewery Creek, on the banks of which there was a very early brewery. But the rock there is too hard for easy tunneling, and when you have all the ice in Lake Superior to work with, an ice house makes more sense.

The inglorious appearance of Brewery Creek today

Maine is quite far north and was settled early.  But settled by priggish tee-totallers who gave the name "Maine Laws" to a spectrum of spoil sport anti-alcohol legislation.

I am pretty sure that the Upper Peninsula of Michigan had brewery caves...after all, a mining rush always brings the two necessary ingredients together: thirsty men and digging proficiency. Perhaps somebody up that way will report in.

But in the end I suspect that the Furthest North brewery cave will turn out to be Canadian.  I have in fact been chasing down information on a couple of possibilities that will have to wait until another posting...

After the Winter

I have my cherished delusions and the Early Spring is chief among them.  Yes, blizzards notwithstanding I begin to envision warm, verdant idylls around the first of February.  Hey, it happens once in a while, usually in peculiar weather anomalies such as Rapid City South Dakota. Why, they once had a 49 degree (F) temperature rise in two minutes....followed by a 58 degree drop over 27 minutes but I am ignoring that part.  Remember, I'm delusional.

But back in the real world it has been a quite tolerable winter.  Not too much sub zero weather, only the occasional blanket of snow and even that is an excuse for impromptu neighborhood fun.  You have to keep a close eye on things to ensure that you are out with your snow blower at just the right moment.  Out too soon and you will have to plow twice.  Wait too long and the folks next door will steal a march on you and plow your sidewalk before you can get there.  When timed just right it is a sort of mechanical ballet done to the basso thrum of internal combustion, we meet at our shared sidewalk convergence, nod to each other and pirouette our turns.  Of course then veering off to plow the sidewalks on the rest of our half block before the folks there can roust their sluggish teens out the door with shovels.

FIRST robotics has made things fly by.  Nothing like a time compressed major undertaking to make the days and weeks seem fleeting.  Am I the kind of person who wakes up at 5AM having in my sleep come up with a nifty solution to a technical quandary?  I am surprised you would even ask.

And so I wind down my retirement.  It looks as if I am heading back to work the last week of February.  This would be an 11 week hiatus, eclipsing my previous longest retirement of five weeks.

It's been nice.  I could get used to it.

In my current mode there are so few rules.  Be awake, be asleep any time I choose other than the six day a week robotics build sessions.  No long distance drives, no being up all night having to actually make life and death decisions.  We have a routine for daily exercise and for regular grandchild time.

I am going to take the work life a bit easier too.  Clinic and Urgent Care stuff, no more night and weekend ER punishment.  Enough to keep me out from underfoot and to avert guilt regards minor extravagances.

Adventures ahead of course.  Another trip to Vindolanda for a bit of Roman excavation.  We should have a jolly crew on hand this year.  Oh and some other interesting ventures. Stay tuned.
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FIRST Robotics - Progress Report Five

For much of the build campaign we have been in an odd cycle.  We have a great session, lots gets done and the robot progresses.  Then we have a lousy one.  Kids fussing around doing poor quality work that needs to be scrapped and done again.  And when kids are not working productively they are harder to supervise.  Is the goofing off a cause or an effect of a frustrating lack of progress day?

But as we dig into our last couple of weeks the progress has become more consistent, more good days than set back days.  We figured out which kids work best in certain roles.  And they surprise you.  A couple turn out to have decent welding skills.  One who has a hard time explaining his work is nonetheless very accomplished at the autonomous programming elements.  Although "the guys" tend to be more hands on with the mechanical work a call goes out often for one of our more petite team members as she has hands that can reach some difficult corners of the frame system.

As it turns out there are more tight corners and hard to reach spots than you might expect...

And as we get into the home stretch we are finding out that each system impacts all others.  The way we mount the pulleys driving the sweep arms impacts where we can mount electronics.  Removing a support element to make that easier allows the belts to loosen up, etc, etc.

But if belts, and time, are slipping away a bit it is important to note that some things go very well indeed.  We had the horrid realization the other day that we had been testing our climbing system on a wood mock up.  In the tournament it will be steel. Have we misjudged our ability to crawl up a smoother surface?  Two of the team were detailed to make a steel mock up.  Fifteen minutes later they had this done.  And we were able to climb right over it.

It is a talented group of kids.  And a young bunch.  Effectively we will have them all back next year with lots more smarts.

As for the robot it looks as if we will have to give up any notion of the Grand Finale wall scaling mechanism.  It is more important to get the basics down first.  Without the %%##** bumpers mounted this is approximately its final form.  All systems on board...we just need them to work together well.  The same of course applies to the team.