Musings From the Edge of the Sun
Confessions of a Solar PV Designer and Installer, Moto-junkie and Musician.
Friday, June 17, 2016
Track Riding: My First Full Season
Saturday, January 16, 2016
Onward & Upward
I absolutely stalked the Daytona for over a year before I was able to pull the trigger and bring her home. I participated in a Triumph demo day in October of 2014 and decided then and there that this was the bike for me.
Here she is next to a '13 Speed Triple I dubbed the "Snot Rocket." That thing was a wheelie monster. I had trouble controlling the throttle even on the tame, guided demo ride we were led on. As fun as I knew it could be, and even more practical in some respects; it was the little supersport that would haunt me.
The Daytona was and is nothing like the FZ. At the time, it felt so foreign to me. Actually the feeling was more bizarre than foreign. You sat on top of the machine, rather than "in" it. It felt tiny by comparison to my Yamaha. You could see over the front of the fairing past the front tire, because the riding position is so aggressive. The handling was so twitchy. The bike was impossibly narrow. Where were they hiding the engine in this thing?
Ah. The engine. This triple, that sounded like no other engine I had ever heard and which delivered power so sweetly was the drug to which I would become a fiend. Even after such a small taste of what it could do, I was sold. I had fallen for her. But how to make it happen?
I watched and waited. Surprisingly, the demo bike didn't sell. It sat on the showroom floor for two more months through the holidays, then four, then six. I watched the price drop on the dealer listing on Craigslist. Clearly no one else felt the love I was feeling for this pale British lass. The price dropped again. I worried that someone from out of town would see it online and it would be cheap enough to make the trip to the 'Ol Pueblo and scoop her up. I would have to act.
And act I did. In July 2015 I traded in the FZ6 and paid asking price for the Daytona, knowing the dealer had reached rock-bottom. No haggling is a good thing, and I got a screaming deal on a demo bike with 63 miles on the clock.
Arroyo Seco, November 14, 2015 |
Saturday, September 20, 2014
Riding, 10,000 Miles Later
You Meet the Most Interesting People on a Sportbike
I joined a riding group I found on Meetup last year. Honestly, my expectations of finding like minded friends that ride and share my sensibilities was low. It's a huge group. 650+ enthusiasts, and my distinctly
I'd be lying to say that I am not a competitive rider. Mainly the competition exists with myself. I just want to be the most skilled person I can be at this thing. This is for my enjoyment of the sport as much as for my own safety. However, I cannot deal with squidliness.
From Urban Dictionary: "Squid"
A young motorcyclist who overestimates his abilities, boasts of his riding skills when in reality he has none. Squid bikes are usually decorated with chrome and various anodized bits. Rear tyres are too wide for their own good, swingarm extended. Really slow in the corners, and sudden bursts of acceleration when a straight appears. Squids wear no protection, deeming themselves invincible. This fact compounds intself with the fact that they engage in 'extreem riding'--performing wheelies and stoppies in public areas. Squids wreck alot. Derived from 'squirly kid'
I have met some truly skilled riders through the group-the people you gravitate to when you want to learn a lot about bikes and who are willing to share their knowledge to help a new guy out. There are some members that have been riding for 50 years (!) or more who have raced, traveled incredible distances, and who have lived through periods of motorcycling "technology" that thankfully are history now. Their help is key when choosing the right tires, bleeding your brake lines, or figuring out the best way to clean your chain. The fast guys, I mean the really fast guys, the front of the "A group," are often in their late forties or early fifties. They've been around, and their focus is sharp.
So much of sport riding is unnatural. Staying off the brakes, deep lean angles, keeping calm and simply staying on your line require training to overcome your body's instinct to resist. This is the part of motorcycling that is at once glorious and frustrating as hell. Having someone around that can say "yeah, that's a little freaky." is valuable enough.
My First Little Tour
I got some saddlebags and took off for a couple of days last month. All I can say now about touring is-I get it. I finally get it. I am now able to pardon those guys on big touring bikes. It's tough to avoid all the cliches here, but heading out on unexplored two-lane is so good. I have always liked to drive, and never mind taking on a long day behind the wheel of a car, so I guess this is a natural progression. Sure there are limitations to big miles-the comfort of the machine (about three hours before butt-burn sets in) and the weather. You're in it, for good or bad. But then, you can always stop and get a cup of coffee and chat up the locals, and that's a great thing in itself. There are so many riders out there that someone is bound to ask you about your bike and start recounting their own tales of cycles past. If you're on the road for three hours, take a break, and get back on for three, that's a solid day of riding. I am truly impressed with people that log 8 or 12 hours in the saddle. Never mind the Baja 1000 riders that tear-ass through the desert for 12, 16 or even 18 hours at a time. See Dust to Glory and racer Johnny Campbell if you want to take a look at a truly hardcore rider.
Johnny Campbell, Baja 1000 Footage
New roads present new challenges as well. My little trip offered up a bit of mountain asphalt unlike I have had a chance to ride before or since. For that stretch of highway 191 (formerly hwy. 666), my style was forced to adapt, and I gained a new technique for the quiver (even though I almost puckered a hole in my drawers while learning it). Most of the riding I have done after this experience has seemed "easy" by comparison. Now I sit around and dream about new terrain.
Updating the Stable
I've had the good fortune to take a few track days on the FZ as well. Nothing can catapult your skills forward like riding at the track. You focus all of your technique, knowledge and physical strength on the singular goal of making that lap time just a bit smaller each time around. The result of this effort for even a few hours at the track is more confidence and control on the street... And a huge desire for more and better bike! As I found with every other sport-there's always a sharper tool for the toolbox.
My problem is, I want the best, and I can't afford it. No way, no how. So I will wait patiently, save a few bills here and there, and wait for something good to pop up on the used market.
The Fizzer
What's next?
Sunday, June 3, 2012
What You Don't Know Can Hurt You
I want to say thank you to the universe for what happened next. I found a buyer for my scoot within a day of posting my Craigslist ad, and he was willing to pay $1000. Since I had purchased it the year before for $1200, I was beyond stoked. It was a win-win for both of us. I had done some upgrades to the bike, and it was actually running really well. I felt confident that this kid would see some good mileage before the 10k mark... I even told him about the high probability of engine failure around this time. Chalk that up to my impeccable sales technique.
I sold my scooter with no idea of a replacement vehicle. All I knew was that I wanted to step up to a motorcycle. My childhood dream of owning one had been revived. I would do it this time. I would find out what this was all about, even if I had no idea how it was going to happen. Sometimes you have to just lean back and let the world take care of you.
I searched Craigslist and eBay, all of the local ads and CycleTrader once I had cash in hand. Nothing solid panned out. I just didn't have the cash to get a quality ride. I feared more time wrenching on a less-than-reliable bike than actual time in the saddle. Then I remembered a former client of ours in Sierra Vista, about an hour and a half away. A rabid motorcycle enthusiast, and former MotoGP racer, he had a cadre of bikes filling his garage. His four-wheeled vehicles were relegated to the drive outside, where they baked in the unforgiving Arizona sun. I recalled the beautiful Yamaha sitting idly in a dark corner. It seemed tiny compared to the 1000cc super-sports on stands receiving loving upgrades and maintenance. I remembered the off-hand comment that it was for sale, and for me, at a good price.
It took one call to find out that the price he had in mind was indeed a good one. It was just above half of current value for that year. I knew that he was meticulous about maintaining his stable of cycles, so I bought it, without a test-ride over the phone.
2006 Yamaha FZ6 |
That being said, I have never had such a good time on two wheels. Even my daily commute has taken on a new meaning. I thought this after buying the scooter, and thought that it couldn't get any better. I constantly wonder why more people don't take the plunge and buy a bike.
Perhaps most of us want to be disengaged from the drive, taking and making phone calls, listening to music and even watching movies while on the road. It's wrong and unsafe, but our cars have become more living room than automobile. I find it ironic that the very thing that makes riding more unsafe: apathetic drivers, is what keeps most of us off motorcycles in the first place.
With a healthy respect for my bike's speed and power, I am psyched to immerse myself in this entirely new world. It goes deeper than I thought it would, viewing it from the outside.
Saturday, October 15, 2011
"I can get 80 miles to the gallon on this hog."
Six months of scooter commutin' later, and I have learned a few things. Mostly maintenance things. The riding itself gets to be a pretty normal part of everyday life in less time than you'd think, and what you are left with is the wrenching. Taking your scoot into the shop is outrageously expensive. Hourly rates for labor rival what you'd pay to get your car fixed. $60 to change a belt? $75 for an oil change? Yeah... not so much.
Monday, April 11, 2011
How To Ride a Scooter in Traffic and Not Get Killed
So all riding skills aside, it seems the meat of staying alive on one of these things in traffic is being aware of where the potential hazards are to you, before they make it to you. I don't think I'm ever going to "lay it down," or "go over the bars" without the help of another vehicle. I am learning everyday the meaning of defensive riding, and it is this: assume everyone driving a car is an asshole. I have learned this well riding a bike in the city, but nothing hammers the point home like an extra 20mph or so. This may seem terribly obvious, but you would be surprised how invisible you become to other motorists without that steel box around your body. So far, knock on wood, I have been lucky enough to merely observe this foolishness, rather than be directly involved in it.
The absolute worst time to be on the road for me is any time after about 7:00AM. Joe Car Commuter has spent an extra five minutes drinking coffee or hugging up on the kids, only to take his lateness out on the rest of us. The tailgating and extreme driving in general is enough to convince me that commuting is a blood sport. If you are inclined to do as I did and brave the fray out there, here are a few tips:
1) Be aware of any erratic driving within eye-shot. This includes any swerving you may witness due to texting, applying lipstick, or diaper-changing.
2) Leave enough of a following distance to land a 747 within. Any questions, see tip #1.
3) Learn to use the throttle, not necessarily the brakes to avoid trouble. Sometimes the bastards won't leave you alone. A car can't hit what it can't catch.
4) Stay out of the automobile's blind spot. They already can't see you as it is, they don't need any more help.
5) Find the most mellow route to and from your destination. My trip to work is mostly on a street with bike lanes almost as big as the ones designated for cars. Good stuff.
I think that scooters and bikes are the wave of the future for American cities. I would like to see as many scooters packing the roadways as you see in Hanoi or Tokyo, Rome or Milan. We just need to eliminate the stigma. Embrace the dorkyness. Then maybe we can start to downsize the rest of our lives in a more efficient, simpler way...
Friday, August 20, 2010
Care and Feeding of Your Off-Grid PV System
Flow of Electricity in the System
Seems simple enough, right? Panels make electricity, which charges batteries, which runs your home. This is true, but there are a few other things you should know.
First, the PV modules (as they are known in the industry) create direct current, or DC power. This power must be managed in a way that the rest of the equipment downstream can handle. To accomplish this, the modules are wired in series (positive to negative) strings to create the correct voltage and amperage to connect to the rest of the system. Each series string is through a disconnect, typically a breaker, most likely found in a DC Combiner Box. This disconnect offers a readily accessible place for you or a technician to “turn off” one or more strings in the event that service is needed at the array. The disconnect also protects the system in case there is ever damage to the modules which could cause dangerous electrical currents to flow within the equipment.
Second, the power flowing out of the DC Combiner reaches a Charge Controller, which regulates the amount of power that enters the storage batteries, and prevents them from being overcharged. The Charge Controller does much more than this, however. This sophisticated device actually manages the overall energy harvest from the array of modules through variable charging algorithms. Another way of saying this: the Charge Controller can actually change the way that it charges the batteries depending on conditions affecting the modules. So when a cloud passes over the array, it can alter it’s charging strategy to yield the highest amount of power from the modules. It also is responsible in some ways for the overall health of the battery bank. The Charge Controller can not only limit power into the batteries, it can provide for timed overcharging of them. This is known as equalization, and is important for battery maintenance. More on that later. The Charge Controller, as you can see, is very much the brain of an off-grid system.
Third, power from the Charge Controller moves into the battery bank, the storehouse of energy. As important as they are, batteries are essentially quite dumb. They react chemically to an electric charge, and are able to reverse that process to release this charge. Each battery within the bank produces roughly 6 volts, and are wired in series to reach higher voltages to connect to the rest of the system, in much the same way as the array of modules. For a 24V nominal system, a minimum of 4 batteries must be wired in series to operate the rest of the equipment. To achieve greater depth of storage, more groups of 4 are added with parallel connections (negative to negative, positive to positive).
Fourth, power is removed from the batteries by the Inverter whenever you turn something on in your house. If a Charge Controller is the brain within the system, the Inverter is most like the heart. It is designed to do the hard work of converting DC electricity from the array and batteries into AC electricity to power lights and appliances, and do this 24 hours a day for life. The inverter also performs double-duty as a battery charger whenever you feed power back through it with your generator. Although not as smart as the Charge Controller, Inverters can sense when this power is available, and will connect to it automatically with an internal transfer switch.
Finally, power from the Inverter makes it’s way into your house wiring through it’s main service panel, where it is distributed among all of the lights, computers and other toys connected through outlets.
Array Maintenance
One of the beautiful things about photovoltaic power is that there isn’t much to do to keep modules running. They will sit on your roof or in your yard and continuously provide electricity day after day without complaint. Typical productive lifespan for PV modules is 30 years, although older panels have been found to be producing viable power for much longer. In fact, most manufacturers of PV modules warranty their power output at 80% nameplate rating over a period of 25 years. That means that a 200 watt module with this warranty would still be making 160 watts after a quarter century! This is not to say there aren’t a few things that you can do to help them make a little extra power here and there.
Rinsing off the dust and dirt that accumulates on the faces of modules does help keep them performing at their best. Heavy soiling can cause as much as a 10% reduction in module efficiency. Choosing a time to wash the array that is neither to hot or too cold is important, so that there is no risk of shattering the glass through heat-shock.
Seasonally adjusting the array can boost power output by as much as 15% if performed religiously throughout the year. Consult a sun-path chart for your latitude to determine the optimum seasonal angles for your location. In the desert southwest, summer angles are usually no more than 25 degrees from flat, and winter angles no more than 45 degrees. Adjusting array angle can be a difficult task, best accomplished with more than one person at hand. Take caution to be careful of wiring between modules, and loosen module wiring clips when necessary. It is very important to realize that the array can never truly be “turned off,” as the panels will continue to output power unless completely shaded.
DC Combiner Box
Be especially mindful of the dangerous voltages and currents within this box. Do not allow children or animals to play around this area. Do not remove the box cover unless there is significant reason to do so.
Battery Maintenance
Batteries are the least glamorous and most time consuming part of your new solar system. They are the “necessary evil” that all off-gridders must endure. They’re big, stinky (just wait!), heavy and generally cantankerous. Think in-laws wired in series and you’ve got it. For all of their faults, there just isn’t anything else quite as good or efficient at delivering back what you put into them. Did I mention expensive? So, to protect our investment, we must take good care of them while they are with us. From Alan Sindelar, President, Positive Energy in Sante Fe, New Mexico: “Respect your batteries, for they are thy storehouse, and thy gold shall be quickly turned to lead.”
The first order of battery maintenance is ritual watering. Make sure to keep all cells topped off as often as you can. Most people realize how much water their bank will use after a year or so, but it doesn’t hurt to check. This amount will change over time. Newer batteries use less water than older ones, similar to oil used in a newer car versus an older one. Purchase a few large containers of distilled water and keep them by the batteries. Do not fill batteries with any other type of water. I have often used a small funnel and a little 6oz. Dixie Cup to carefully fill the cells. Each cell will have a “neck” that reaches down into the compartment. Your goal is to fill until the water is about ¼ inch below the bottom of this neck. This is difficult to see without a flashlight, or some strong overhead lighting. Try not to over-fill the cells, as this will reduce the concentration of the electrolyte in the batteries, reducing their efficiency. Not to mention, making a big mess that can be painful to clean up. When there is a spill, use baking soda to neutralize the acid. It is a good idea to have some on hand near the bank just in case. It can also be rubbed into skin and clothing to prevent burns. Eventually, the batteries will develop some corrosion on their terminals. A heavy wire brush will remove most of this along with a mixture of water and baking soda.
Applying an equalization charge regularly can help prolong the life of your batteries. This is a sustained high current charge designed to knock the build-up of sulfur off the lead plates inside each battery and back into the electrolyte where it can dissolve back into the solution. Equalization is activated through two sources: the Charge Controller, and the Inverter. You will need to tell each device to begin the cycle. If you are attempting to equalize with solar alone, you will want to minimize your electrical usage in the house to send the most available power to the batteries. If equalizing through the Inverter, you will need to connect and start the generator. Equalizing with both sources is recommended, as this increase in power to the batteries will guarantee the completion of the cycle within the allotted time. Battery manufacturers recommend different intervals for equalization, but a good rule of thumb is once quarterly. Newer batteries will not require equalization as often, older batteries a little more often. Before performing an equalization charge, it is good practice to check water levels in the cells. During the cycle, the batteries will use more water than normal.
A few other notes about your batteries: They like to be about the same temperature that you do. This is ideally 70 degrees or so as often as possible. You can insulate the building that the batteries are housed in, or build an insulated box around them. This second idea is often a better one since the power shed is a multi-use building for most. The box will prevent anything being dropped onto the batteries, or set upon them by accident. It’s all fun and games until a rake becomes welded to a few battery terminals, as well as energized. Also, be mindful if cables are to be disconnected for any reason. Insulate the handles of any tools you will use with electrical tape before you go to work.
Inverter
This is the real workhorse of your system. Surprisingly, there is little maintenance to be performed. Some models have a dust filter for their fan which will get dirty and impede the flow of air into the unit. Otherwise, there are no user serviceable parts within the inverter.
Most manufacturers include some kind of control device for programming and monitoring of the inverter. Consult the owner’s manual to learn how to navigate through the menus of your particular device. Do not fear accidentally changing important settings that could cause harm to your batteries or the rest of the system. If you reach a menu item that could lower performance of the system or worse, typically the parameter will require the entry of a password to make a change. Lesser functions often require you to press “OK” after making a change to be sure that you know you are making it. There is great information to be had from these devices. Lifetime kilowatt hours produced, diagnostic tools, current output stats, and more can be found with just a few pushed buttons. Another important function provided here is the ability to limit the amount of power flowing through the inverter’s AC to DC charger to the batteries. This will allow you to change the amperage input if you ever decide to connect a different generator to the system. Larger gensets will need to be current limited to around 20 amps AC, as the charger can only handle so much power. Give this some consideration before you buy that 20kW Kohler. You’ll really only be able to send about 2400W to the batteries, and then pass through a bit more to the house.
Final Thoughts
Living off the grid puts you in a much more direct relationship with energy. You must be conscious that your system was designed with a certain load (usage) estimate in mind. Adding appliances and plug-in devices in the future must be done with caution. Let your monitoring device be your guide. Seasonal changes specific to your site will affect the system’s output as well. Awareness of when storms will likely pass through can give you a heads-up for decreased power availability. Above all, you must maintain a good relationship with your installer, or develop one with an accredited local solar technician. This is the person you will want to be able to call at 10:00 PM for advice when your system crashes suddenly.
While owning and maintaining an off-grid PV system may seem challenging at first, you will be surprised how quickly all of this becomes routine. Most of my clients report that after a few years of life off the grid, they feel pride in their ability to understand how the system works, and happy that they accepted the responsibility. Good luck with solar, and welcome to the club!