Author Archives


21
Sep 2011
by larry

Friends Bike Clinic

“There is a spirit which I feel that delights to do no evil, nor to revenge any wrong, but delights to endure all things, in hope to enjoy its own in the end.”
-James Naylor’s deathbed testimony

I’ve been a bicyclist since I was a kid. As a middle-schooler I delivered newspapers from my bike. As a teenager I worked as a bike courier in Washington D.C. As a college student I biked from Portland to San Francisco on a three-week journey with my future wife. For me, bicycling is simply the most enjoyable way to travel.

Bicycling is also a way for me to care for the earth and to improve my community. In the last couple of years I’ve experimented with what the mainstream media calls a “car lite” lifestyle. I drive a large electrically-motorized bicycle that can easily carry a passenger and four bags of groceries up the steepest hills in Ithaca. In a typical month I put more miles on this bicycle than I do in the family car. I bike in all weather and in all seasons, and I make trips that are sometimes hundreds of miles long. I’ve found ways to almost completely (and comfortably!) replace our car with a bicycle.

I have a sense that others would like to bike more but don’t know how to get started. I’d like to share my experiences and learn about theirs. I’m setting up a project with Ithaca Monthly Meeting’s Earthcare Committee that I call the “Friends Free Bike Clinic”. Basically I will bring my tools to the meetinghouse deck and invite anyone to come by. We can work on our bikes together and share our knowledge about biking. Repairs could be as simple as a quick tune-up: cleaning a chain, pumping up tires, and adjusting brakes. Or they could be more involved: ordering and installing parts or even ordering whole bikes. In particular I encourage people to add electric motors to their bikes. I feel that an electric motor is a necessity for utility biking in Ithaca.

I plan to hold the bike clinic on fourth Sundays from 1pm to 3pm beginning September 25th (which also happens to be Porchfest, a neighborhood music festival). I invite complete novices as well as mechanically-minded people to join me.

-Larry Clarkberg


19
Aug 2011
by larry

My DIY SLA Trip Batteries

Test drive to Sheldrake Point

Test drive to Sheldrake Point

Caution: shop talk blog post intended for do-it-yourselfers. For my recent 240-mile journey I created what I call my “trip batteries”—batteries that I can attach to my bike to augment my regular batteries, but that I don’t intend to carry around on a daily basis. As such, the main design criteria for these batteries is that they be inexpensive. I don’t want to pay the big bucks for a battery that I only use once in a while. The obvious choice is SLA (sealed lead acid) batteries. These are the same kind of batteries used in cars, and the technology is almost 100 years old. E-bikers out there may poo-poo this choice of battery. After all, compared to my lithium batteries, my SLA batteries are heavy (20lbs vs. the lithium’s 15lbs), not quite as powerful (600wh vs. the lithium’s 720wh), don’t last as long (300 charge cycles vs. the lithium’s 1,500) and they are dumb (that is, they don’t have a battery management circuit board in them to prevent human error from damaging them, although most controllers provide the necessary protections). But they are cheap. I can put together a 10ah 36v battery for about $120 versus a 10ah 36v battery for $600.

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28
Jul 2011
by larry

Long Distance Trip on My Ebike Workhorse

A couple of weeks ago I set out on a 240-mile journey from my home in Ithaca NY to the New York Yearly Meeting (a Quaker gathering) in Silver Bay. Silver Bay is a resort on Lake George in the scenic Adirondacks. My vehicle of choice: a Surly Big Dummy cargo bike equipped with a Stokemonkey electric motor. I had made this journey last year covering the distance in three days. This year I planned to tackle the distance in two days, going 120 miles each day.

Last year my strategy was to charge my batteries en route using three solar panels supported over the rear of my bike. The solar panels were helpful, but couldn’t generate as much electricity as I needed. This year I upgraded my bike to use two 36-volt LiFePo4 batteries in series (for 720 watt-hours), and for this trip I carried an additional pair of 36-volt SLA batteries (for an additional 600 watt-hours). All of these batteries together weigh about 70 pounds.

I purposefully limited the amount of power my bike could draw from the batteries. My 72-volt system can easily push my bike over 20 mph, but at that speed my distance would be limited to about 60 miles. However, if I kept my speed between 10 and 15 mph I could get a full 120 miles out of my batteries, though I would have to be in the saddle 12 hours.

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9
Jul 2011
by larry

Proud Hardworking American Bicyclist Disrespected by Own Government

Yesterday the Bikes Belong folks sent me an email urging me to write to my congress people. Apparently a Representative Mica and a Senator Inhofe are attempting to “eliminate dedicated funding for biking and walking programs” because they feel these programs are “frivolous” and “do not serve a federal purpose”. Instead of sending the message suggested by Bike Belong, I wrote the following:

Dear Congresspersons Maurice Hinchey, Kirsten Gillibrand and Charles Schumer:

I am keenly aware of the connection between my car use and America’s shameful oil dependence. So two years ago I made a personal commitment to reduce my car use. I’ve been using an electric cargo bike to run most errands around town and even make long trips. Last month I made 30 bike trips adding up to 254 miles. Many of those trips were carrying a passenger or hundreds of pounds of cargo; all of them used a hundredth the energy of a car; almost all of them were immensely enjoyable. In contrast I made 10 car trips adding up to 181 miles.

My point is this: my bike use is not recreational. It is not “frivolous”. It is a valid solution to very real problems America faces. For Representative Mica and Senator Inhofe to reduce funding for bike programs is short-sighted and intolerable. It is a slap in the face to my efforts. Please see to it that bike funding is not cut. And please encourage Americans to bike not just for recreation but to replace their car; not just for their own health but for the health of the nation.


21
May 2011
by larry

I Flooded the Mississippi

Thankfully the news media is keeping quiet about this or I could be in big trouble: I flooded the Mississippi earlier this month. I’m also responsible in some small part for the Arkansas killer tornados last month. I may even be implicated in the Japanese earthquakes earlier this year, though the evidence for that is not so clear. But certainly without a doubt (as I confessed in a previous post) I share with BP responsibility for the gulf oil spill last year. How did I manage to cause such massive death and destruction? Simply by living my life as usual, getting around by car. I feel a little bit guilty about it actually. But what can I do?

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2
May 2011
by larry

The Next Best Thing to Bicycling Part II

In Part I of this post I extolled the virtues of running, which in my opinion is the next best form of personal transportation after bicycling. I described how I experimentally determined the best running style for me, which I call the front-landing style, or what is coming to be known as the barefoot running style. I describe the advantages of landing on the front of my foot rather than my heel: it’s easier to run uphill, run downhill, vary my speed, run on rough terrain, breath more deeply, and most importantly it helps me avoid repetitive stress injuries. Advocates portray the barefoot running style as more natural. That’s not particularly important to me. Speed is also not important to me. With a barefoot running style I can run marathon distances at a moderate speed. I can do it in any shoes or even barefoot. And I can do it gracefully and enjoyably. Like riding a bicycle.

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26
Apr 2011
by larry

The Next Best Thing to Bicycling Part I

No doubt you are reading this because you saw the title and you are wondering “What is the next best thing to bicycling?” No I’m not talking about sex. After bicycling, the next best form of transportation is running, pure and simple. When I’m not biking I like to run or walk briskly to my destination, and I also like to run just for fun.

Like bicycling, running has fallen out of favor as a valid means of utilitarian transportation and is nowadays considered exclusively an athletic pursuit. Runners these days also suffer from an unexpected handicap: the shoe. That’s right the shoe. And in particular the running shoe.

No doubt you are now thinking “How could the very item designed to facilitate running be bad for runners?” Don’t take my word for it. Just ask the growing number of runners who are eschewing traditional running shoes for “barefoot running shoes” or even actually running barefoot.

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3
Apr 2011
by larry

Name Our Ebike Club

Could this be our new logo? Have a better idea? Let us know.

I’m planning to start an electric bike club with some friends in Ithaca and we don’t yet have a name. Can you help us think of one? Finding a name is an important first step for any organization. It will force us to think about the goals of our group. This grueling process may release our hidden differences, but the fires of our disagreement will forge in us a new a sense of unity! Right. We invite you to participate.

Ithaca is especially suitable for ebikes. The largest part of our community is students. A very visible part of our community is environmentalists. Both of these groups would benefit from biking: students need an inexpensive mode of transportation and environmentalists want transportation that better fits with their values. But both groups are held back by (among other things) the incredibly hilly terrain here. An ebike erases that impediment. For a variety of reasons the bike stores here are unable to step up to the plate to promote ebikes. That’s where a club comes in. Our club is all ready to go except for one thing: we lack a name. Here’s some thoughts that may guide your club naming.

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26
Mar 2011
by larry

Ebike Excitement Causes “EV Grin”

Thea and I like to go letterboxing (see letterboxing.org) on our ebikes.

I recently increased the power of my Stoked Big Dummy by setting it up to use two 36v batteries in series rather than only the one 36v battery. (“Stoked Big Dummy” means a Surly Big Dummy extra long bike with a Stokemonkey electric motor.) The change required purchasing a more robust motor controller from the fine folks at ebikes.ca. I also had to open up the controller and solder some beefier resistors in there and make some other modifications. But the result has been amazing. My bike is now very responsive and can easily accelerate to 20mph in a few seconds, and go up hills at 15mph without pedaling. Normally in this blog I rail against speed, but I am discovering that this moderate increase in speed increases the utility and safety of my beloved car replacement vehicle. I can now go on single-afternoon 100-mile trips by bike without it being a big deal “tour”. And I can more easily maneuver in traffic and join the flow. True, I’m now using 20 watt-hours/mile rather than my usual 10 watt-hours/mile, but still nowhere near the 1200 watt-hours/mile that a car uses.

I won’t deny it, speed can also be fun. I recently put together an ebike for my daughter. In the photo above you can see that the bike has a big black front hub. That’s the motor. The batteries are in the bag on the bike rack. Her first ride produced in her the legendary “electric vehicle grin”. She said that her bike was “like a car disguised as a kid’s bike”. She instantly recognized that her new ebike would give her a basic freedom that is denied to kids in our society: the ability to use roads for transportation. Kids in our society are taught from the moment they can walk to stay out of the road. No wonder then that kids must rely on parents and school buses for transportation. No wonder we have an obesity epidemic in this country. The ebike, and the EV grin it causes, may change this sad state of affairs.

I thought this recent post to the Endless Sphere ebike forum by icecube 57 captured the “EV grin” phenomena that is currently only shared by hobbyists but may soon be experienced by the general public as ebikes take off. You can read the original post (along with video) here.

“In other news Im very suprised at the power of this motor. My neighor just moved in her bf. I came home to find them socializing with my wife in the garage. The conversation shifted to my bike. He was like ill try it later. I said you are going to try it now. He gave in. I started him off in Grandma mode. (20mph legal restricted) He was excited about that. The controller still dumps 3500-4000w off the line but it tapers off quickly and he proceeded to take my bike up the huge as hill on my street that I will stall on in grandma mode and it took him up the hill without stalling un assisted maintaing about 15mph. Which I cant even do unless I have a running start. He is about 120lbs lighter than me so I can understand it being easier on the motor and controller. He went around the block and came back. He said take this out of grandma mode. He had a grin from ear to ear…Its one thing to ride your own bike but to see someone else riding it with EV grin hauling ass at top speed in traffic like its a motorcycle”

For the record I only have a temporary interest in riding an electric motorcycle, until the grin wears off. My ultimate goal is to build a lightweight (200 lbs.) narrow (42″) slow (20mph) passenger-carrying “car” that falls within the legal definition of an ebike. I couldn’t see myself succeeding with 36v. I can definitely see it happening with a 72v machine.


20
Oct 2010
by larry

The Motorist Mentality: Get Out of My Way

Last week once again a left-turning motorist almost ran me down in the crosswalk at the intersection of State and Aurora near my house. And once again rather than apologize this person yelled something inaudible but probably not nice at me, shook their fist at me, and sped off after passing inches from where I was standing. Why was this person so incredibly angry with me? What had I done? And then it hit me: motorists are not concerned with safety, they are concerned with fairness. This person was upset because I had stepped into an area he felt was his. His light was green, so from his perspective it was unfair of me to enter the crosswalk. (He neglected to account for the fact that left-turning vehicles don’t have the right-of-way.) He was willing to risk my life to show me that I was being unfair. What can we make of an otherwise rational person giving more importance to the temporary ownership of a patch of asphalt than to the safety of a fellow citizen? How did we come to this motorist mentality infecting our population, and what can we do to reverse it?

The typical motorist wants to go as fast as they can at all times and they don’t like it when someone or something prevents them from doing that. Do you have the motorist mentality? Ask yourself how many of the following statements apply to you:

  • I am usually in a hurry when I drive.
  • When I drive in the city I have a constant feeling that I’m not going fast enough.
  • I don’t like having to wait for pedestrians and bicyclists.
  • If the vehicle in front of me is going slower than I am I tailgate them, flash my lights at them, and honk my horn at them.
  • I regularly pass other cars in no-passing zones.
  • I regularly travel faster than the speed limit.
  • I often get upset by other vehicles when I drive in the city.
  • I feel safe in my car so I rarely think about safety.

Or do you have the bicyclist mentality:

  • I am not in a hurry most of the time.
  • I feel vulnerable so I think about safety a lot.
  • If a vehicle is in my way I go around them.
  • I don’t mind going slowly because other vehicles can pass me.
  • I like to say “hi” to other bicyclists.

The motorist mentality is one result of the space constraints caused by the introduction of massive numbers of wide fast vehicles onto our streets. Here’s an analogy. Picture a train station of the future with thousands of people getting their tickets and boarding their trains. Imagine now that all of those people are given rocket-powered roller skates. As a consequence, everyone must wear big hoop skirts for protection, and the hoop skirts cause each person to take up nine times as much area as before. Furthermore, suppose everyone must also wear ear protection which makes it impossible for them to hear each other. (Hollywood take note: this would make a great scene in your next science fiction movie.)

Everyone finds it difficult to get through the doors. They can no longer negotiate with each other who goes first. Lines form. Everyone must wait in line. Everyone must follow the rules. Everyone wants to go as fast as they can (“We’re wearing rocket skates for crying out loud!”). Some people get impatient and don’t follow the rules. Tempers flare. And the motorist mentality sets in. This is what happened to our streets 100 years ago when people started driving cars instead of walking. Now imagine the rocket skates becoming smaller and less powerful. The hoops skirts shrink and people slow down. The rocket skates are quieter now too, so that people can once again talk with each other. There is more room for everyone. People greet each other. Everyone is happy. No one has the motorist mentality any more.

This is certainly a pretty picture: all we need to do to return to our blissful origins is to make our vehicles slower and smaller. And I believe it could happen if enough of us want to make it happen. However, in the meantime, we must deal with what we’ve got. What does this motorist mentality, this “get out of my way” thinking, mean to bicyclists and motorists? How does knowing about it affect our behavior? First some tips for bicyclists:

  • Don’t follow the rules (you can read more about this idea in a previous post). The motorist mentality means traffic laws were not designed with your welfare in mind. They were designed to make traffic fair for motorists. Following all of the laws is likely to get you killed. (There are certain laws you should follow in order to ensure that motorists are fair to you, as described below.) For example the typical traffic light can be considered a device mainly intended to make intersections fair for motorists. Motorists are willing to wait at traffic lights because they know that they will get their turn. But traffic lights also make intersections dangerous for bicyclists. This is because a traffic light causes a large number of cars to congregate around the bicyclist. When the light changes those cars will explode from the starting line and jockey for position as they speed to the next light, without regard for your safety. (Right-turning cars are particularly dangerous.) You as a bicyclist will be safer if you run the red light. First check for cross traffic, and then cross if it’s clear. And it’s fine for you as a bicyclist to turn right on red, in spite of what the signs may say, because your vehicle is narrow. Nearby motorists sometimes howl with rage when they see me make these “illegal” maneuvers. They think I am doing something unfair, because  they are not allowed to run the red light or turn right on red. I wish there were some way to tell them that I am merely giving my own safety a higher priority than being fair within a system meant for them.
  • Be courteous. Motorists are a generally crabby lot, and your good cheer will help them. This tip may appear to contradict the previous paragraph; the difference is that “don’t follow the rules” is about your relationship with an oblivious transportation system while “be courteous” is about your relationship with people. Since motorists can’t hear you, you must communicate with them by hand gestures. As a bicyclist there are certain hand gestures you will be tempted to use after a motorist has unthinkingly threatened your life, but you must refrain. Instead, wave hello to people. Politely signal for them to go around you if you are taking the lane. Say thank you with a smile when they give you your right of way.
  • Assert yourself. The motorist mentality makes motorists very careful to be fair to their fellow motorists. But ironically motorists think nothing of being unfair to bicyclists, so much so that many bicyclists are intimidated into riding long distances on the sidewalk and riding the wrong way down the street. Both of these behaviors are extremely dangerous. Ride in the street. It belongs to you and don’t let anyone tell you it doesn’t. Take up the full lane if necessary. Get in the left lane to turn left. These are all rules you do need to follow if you want to gain the respect of motorists and ensure that they treat you fairly.

How can you motorists overcome the motorist mentality? Here are my tips:

  • Relax. You made a transportation choice that has advantages and disadvantages. The advantage is that you have a nice big cozy box to sit in. The disadvantage is that so many other people have also chosen to ride in big cozy boxes that you all must wait in line to get across town. If someone cuts in front of you don’t blame that person, blame your collective choice of vehicle. Accept the trade-off you made. Better than that, enjoy the trade-off you made. Bring a book or some knitting to work on while you wait in line in your big cozy box.
  • Make the journey as important as the destination. Budget enough time to go slowly on purpose. Listen to the radio. Look out the window. (But put down the cell phone.) Enjoy.
  • Get your priorities straight. Your car easily weighs enough to crush a person to death. It goes fast enough to kill a person on impact. It is wide enough that it leaves little room for error on city streets. That is a big responsibility. Consider how unimportant it is to be concerned about “that person is in my way” when there is the larger concern of “am I being safe with this large machine entrusted to me?”

I hold out hope that the motorist mentality can be eradicated in my children’s lifetime. Today I read about an electric vehicle for sale in my town that has a top speed of 25mph. I think most people’s reaction will be that that speed is too big a sacrifice, that we need to make a better electric car. I think the car is fine, and that we need to change our assumptions about speed. For me driving a low-speed car would be a step up from my electric cargo bike (especially in winter!). And driving it around at a paltry 25mph would be an opportunity to cure myself of my motorist mentality.