Archive for April, 2009

And the Winner is…

Sunday, April 26th, 2009
Since last Fall I have been stressing about graduate applications, frantically making sure that all the parts of the application are in, worrying myself to death waiting to hear back from schools, rejoicing at acceptances, claiming "I didn't want to go there anyway" at rejections, and finally making the big decision on the next 4-5 years of my life. Being the nerd I am, I made a table of my results for your viewing pleasure.

School Result Funding
MIT Rejected :(
UC Berkeley Rejected :(
NSF GRFP Rejected :(
UC Irvine Accepted None
Georgia Tech Accepted None
Virginia Tech Accepted None
CU Boulder Accepted Yes!
UI Urbana-Champaign Accepted Yes!


University of Colorado Boulder and University of Illinois Urbana-Champaign (UIUC) were the only two schools to offer me funding and invite me to visit their campus, so the decision came down between those two. Both are great schools with excellent programs in ECE and power electronics. I liked both their campuses, professors, and graduate students. This really only made the decision MUCH more difficult. After several frantic tweets, many phone conversations, and various emails, I decided to take the offer at UIUC. Starting this Fall, I'll be a research assistant doing research somewhere in the realm of power electronics and working towards my MS and then PhD! I am very excited about next year and I hope it will be an excellent experience.

Part of me is amazed that I am doing what I set out to do just about a year ago. I somehow managed to come out of a bad job situation, get myself back on my feet and get back on the road to graduate school (with lots of help from my friends and family, of course). I know I still have a long way to go, but at least I am headed in the right direction. I have already started to settle into my life in Boston surrounded by great friends and living a happy (mostly healthy) lifestyle. I am sad to be leaving a place after just a year, yet again, but life is an adventure, right? And I'm really hoping I will stick to the whole graduate school thing for more than a year. Let's hope for the best. ;) 

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Tuesday, April 21st, 2009

By some estimates, 100 surnames cover 85 percent of China’s citizens. Laobaixing, or “old hundred names,” is a colloquial term for the masses. By contrast, 70,000 surnames cover 90 percent of Americans.

Yep, I was right. From the NYTimes [via]

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Cabbages and kings

Monday, April 20th, 2009
I finally bought a bike and last night I BIKED TO THE GROCERY STORE and bought groceries ON MY OWN. This improved my general well-being by 10,000 points.

A momentous victory. We all live in villas which are pretty far from town, and we have drivers that will take us where we want to go, but the vehicle options are 1) mini bus and 2) large bus. Either bus is normally 90% vacant, which is great for needlessly wasting carbon. We must first arrange with the driver where we want to go and schedule the bus. If we want boys and girls on the same bus, must obtain prior permission or call the director of General Services. Public buses don't come out this far, and taxis can't find our villas (no road names, no address numbers...not that they would help that much...taxi drivers typically navigate by landmarks, not street names.)

Thus, it was AWESOME to just jump on my bike and go. I can't describe the sense of freedom that has returned. (Although I very much miss my fixed-gear beast in Boston.)

Life is filling up fast. I'm taking an hour or two of Arabic every day now (I can read like a kindergartener!), plus various other activities. I'm also sitting in on one of the coolest classes EVER: the History and Politics of Oil in the Middle East.

It began as something I thought I "should" do, a topic I "ought" to know more about, so I dragged myself into it. And it's orders of magnitude more fascinating than I ever imagined. The course text is The Prize: The Epic Quest for Oil, Money & Power, by Daniel Yergin and it's SUPER. The book does an awesome job weaving an off-the-wall story complete with outrageous characters and all their quirks.

For example, take Abdul Aziz Al Saud, the first monarch of Saudi Arabia. He was the Saudi king who united the warring tribes of Saudi Arabia- a desert adventurer, roaming the sand dunes with his camel caravan, conquering tribes, and wedding desert princesses to forge alliances. (He fathered 50 kids in his lifetime!) Before oil was discovered, he could carry all his wealth with him on a camel. 

When the Middle Eastern oil craze was just beginning, he was initially not interested offers from companies that wanted to prospect for oil, he wanted to drill for water instead, which makes a ton of sense when you think about how much value water has in a desert. 

From all accounts, Ibn Saud was incredible. Six foot four, charismatic, dashing, everything a king should be. Later in life (after oil discoveries) when he met Roosevelt on the USS Quincy, all the Westerners slept in the cabins at night, but Ibn Saud and his entourage insisted on sleeping in bedouin tents pitched on the deck. That is so cool.

Saud had an advisor/friend named Jack Philby, aka Sheikh Abdullah, a British expatriot who converted to Islam. He was fluent in Arabic, as well as Persian, Urdu, and Punjabi. It seems like any time anything important happened between the British and Saudi Arabia, Philby was there, swaying things one way or another. And when the American relations with Saudi Arabia started growing and Britain was fading away, Philby was there, facilitating that change too. (Britain thought there was no oil in Saudi Arabia. They advised Ibn Saud to take the Americans' money and sell them an oil concession the Brits thought was useless. Boy, they regretted that.)

Philby was an avid bird watcher, a desert explorer, and his son is famous in his own right for being a spy for the Soviet Union. His second wife was a Saudi slave girl. After Ibn Saud died, Philby began openly criticizing King Saud, the next ruler of Saudi Arabia for his wild spending, among other things. Philby was exiled. On his deathbed in Beirut, he spoke his last words: "God, I'm bored."

I've learned a ton about World War II, oil companies, OPEC, Iran, and some about the Palestine/Israeli conflict, Egypt, and the evil oil company stereotype (which is both true and false, quite a change from my previous stance of "oil companies are evil, die, die, die.") 

I also learned more about the energy crisis in the 1970's when for the second time Americans had to wait for hours in long queues to buy gas. President Carter's approval rating dropped to 25%, comparable to Nixon's rating during the Watergate Scandal. For various reasons, Americans viciously blamed Carter for the frustration of waiting in gas lines. It made me think that when Bush invaded Iraq, it wasn't just for "those evil oil companies." He was also doing it because we Americans, as individuals, demand a reliable oil supply through our actions and habits, and if anything happens to the supply, there's hell to pay. Yes, I know, gross oversimplification, but the point is that my entire view of how oil works is now vastly altered, and I feel about 100 times more informed than before, which means I'm about a millionth as informed as I should be.

[I'M SO EXCITED AMERICA NOW HAS A PRESIDENT WHO CARES ABOUT RENEWABLE ENERGY. ]

The Prize was also turned into a PBS documentary series, and we watch some of these films in class, which are also super great. It's absolutely wild to see black and white footage of old classic cars driving up and down sand dunes. Which reminds me of a story...

There's a highway that runs north-south called the Desert Highway in Jordan, and according to Husam's dad, it was once literally just a swath of desert that people drove on. Thus, you'd be driving along on the sand/dirt and you might look to your right and see another car driving alongside you, but maybe 100 meters away. At any rate, back in the day, Husam's dad was driving from Maan to Aman in the north. He ate lunch, then jumped in his car and started driving on the Desert Highway. About midway there, he meets another car headed the opposite direction.

They stop and chat and his dad asks this other fellow where he's going. "Aman," he said. "No way," Husam's dad replies, "I'm going to Aman, you're clearly lost." They argued for a few minutes, but in the end, they both continue driving opposite ways. ...several hours later, Husam's dad ends up (you guessed it) back at the restaurant where he ate lunch earlier in Ma'an.

Getrag 265 Transmission Swap

Sunday, April 19th, 2009

This article is in the process of being written. Expect new pictures and an extended write-up in the next few days.

With the additional power provided by the turbo on the 16 valve engine, the stock Volvo transmission was just not handling the power. On cold days, if I tried to shift into 2nd gear, then I would be temporarily locked out of every gear (I found this out on a particularly steep hill). On top of that, the overdrive unit didn't engage reliably and I didn't want the transmission to randomly die on me. Since I had a Getrag transmission around, I decided to install it.

The Transmission

After a large amount of research, I started by measuring a bellhousing provided by a fellow board member from Turbobricks. I considered buying an adapter plate but decided to design and fab my own both for cost and the experience of designing everything myself. This is the adapter plate I designed.

 

In addition to the adapter plate, I ordered a centering ring (because I was not yet mill trained) to ensure that the input shaft of the transmission was appropriately placed in relation to the flywheel. A friend turned a bushing togo between the pilot shaft and the pilot bushing (spec). I also sourced a stock BMW sprung-hub clutch, which seemed to be a reasonable choice for daily driving. Also, because I didn't replace the pressure plate, I decided that I'd wait to go hog-wild with my clutch.

I also bought an M46 drive shaft and had it lengthened at (insert machine shop name here). According to another board member, I needed to add 8.25" in length on the front portion of the shaft. Though I would have preferred to measure this myself, I wanted the parts ready before I started the tear down. It turned out to be perfect (I probably could have afforded to go .1 to .25 inches shorter and all would have worked). One thing to watch out for it the condition of the pilot bushing in transmission-end of the shaft. Mine was toast and it needed to be replaced before I could have the shaft machined. The bushing is available from Volvo (part number 1209862, name: Guide bushing for driveshaft with standard transmission)

I then used a hole saw to cut the center section out of my new bellhousing to accept the input shaft of the Getrag. The test-fit showed that I was close with the design of the adapter plate, though I needed to take off about 1/8" from each hole to get the bolts to line up right. Drilling the bellhousing

 

After completing those pieces, I rented a garage from my friends and started to tear down the car. It took about 3 hours to pull the drive shaft, unbolt the the transmission, drop the crossmember, and unbolt the bellhousing. Everything went great until I reached the pressure plate. The pressure plate bolts were cap-head hex screws. Most of them came out nicely, but one of the bolts required some extra persuasion. Try as I might, I couldn't get the bolt out. I started to drill it out with the intent of taking out the remains with a stud remover when I had the inkling to hammer a hardened steel Torx bit into the hole in the cap head. To my surprise and luck, the bolt broke free after a few sharp hammer blows on the handle of my wrench.

I assembled the clutch and pressure plate onto the flywheel and then machined the throwout arm to accept the BMW throwout bearing. My first attempt at this failed and I had to cut a second one (of the later style Volvo throwout arms). Unfortunately for me, I had to remove the entire transmission to make this swap. After reassembling everything, I reattached my new driveshaft, got the clutch slave cylinder back in place, and upon pushing the clutch, blew a seal in my clutch slave clyinder. As frustrating as this was, I took the delay to measure for my modified shift housing and transmission mount.

I made the shift housing by cutting a stock housing and welding in two strip of steel to space the two halves the correct distance. I fabricated the transmission mount in situ by predrilling two pieces of mild steel with holes for the Volvo mount and the Getrag mount. I then welded them together in place to ensure a correct fit. This piece had supports added after the fact.

After fixing the issue with the throwout arm, I once again reassembled the car only to find that though I could start the car in gear with the clutch pushed in, I could not change gears. As it turns out, the stock BMW clutch is approximately 2-3 mm thicker than the Volvo one. To solve the problem, you need a custom-made pressure plate or a spacer. I made spacers out of stacked washers (ghetto, I know, but it worked). By stacking two 1 mm washers on each other, I managed to space the pressure plate the appropriate distance from the clutch in order to have it function. Upon reassembly, everything worked. The transmission shifts a bit "notchily" but feels very solid and never misbehaves.

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Saturday, April 18th, 2009

Wow, I had no ideas synths had gotten so terrifyingly good. Seeing stuff like this makes me wonder if any of the instruments I’ve heard on the radio in the last several years were real… Bert Smorenburg is also incredibly entertaining - favorite line: “Quantize. Why? Because it’s house, of course.”

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PSA

Saturday, April 18th, 2009
Heard of Maker Faire? (Think catapults, flame throwers, knitting, circuits, DIY, artistic soda explosions, hackers, geeks...kind of like Burning Man, but less drugs and more building cool stuff?). It's growing an African branch! Maker Faire Africa, 13-15 August 2009 in Accra, Ghana (oh-so-conveniently scheduled to happen at the end of IDDS, also happening in Ghana this year, July-August.) I think this idea came from the founder of AfriGadget. This event has so much potential to be the coolest thing ever.


Goats Galore

Friday, April 17th, 2009


easter

When I think of Easter, the common associations are church, hunting for that last egg for days after Easter passed, and those frilly dresses my Mom used to make me wear growing up. Now, I instead think of delicious meat…yes, meat. Apologies in advance to any vegetarian who is reading this.

Nearly half of all Ethiopians are Orthodox Christians, barely making it the most prevalent religion in the country (second being Muslim). Formerly the country’s official religion through the time with Emperor Haile Selassie was deposed in 1974, Ethiopian Orthodox is a core part of Addis’s culture. Because of this, during the 56 days leading up to Easter, (and every Wednesday and Friday throughout the year) it is challenging to find meat dishes in local eateries. Why? It’s fasting period.

“To the Ethiopian Orthodox Church, Lent means a period of fasting when the faithful undergo a rigorous schedule of prayers and penitence. This fast is observed with greater rigor than any other fast and it is a test of one’s Christianity. One who fails to keep it is not considered a good Christian. Properly observed in nullifies the sins committed during the rest of the year. The faithful should abstain from all food except bread, water and salt. It consists of 56 days. All kinds of meat is forbidden, and also dairy products. On all the fasting days only one meal is allowed and this is to be taken in the afternoon, at 3 p.m. or in the evening. On Saturdays and Sundays people are allowed to eat in the morning.
[…]
Fast generally implies one meal a day to be taken either in the evening or after 2.45 p.m. with total abstention from meat, fats, eggs and dairy products. Instead they use cereals, vegetables and other type of food devoid of fats. Smoking is a breach of the fast.. Special days are appointed for fasting. Every Wedneasday and Friday are days of fasting because on Wednesday the Jews held a council in which they rejected and condemned the Lord and on Friday they crucified him.”
(http://ethiopianorthodox.org/)

In order to prepare for the Easter feasts (the Ethiopian calendar is different, making this Sunday Easter), the goat market across the street from the office has become a popular destination. Today it is over twice its usual size. You can’t walk anywhere along the street without having to yield to a goat herd…or as I did, picking up and moving a few to get through the pack.

People use all sorts of methods to get their recently purchased goats home from the market…tying them up and putting them either in the trunk or on the roof rack of a taxi, bringing them in a blue donkey (mini-bus), wheel-barrowing them (tying up either the back or front legs and having the goat wheel-barrow walk on the two untied legs), carrying them on your shoulders, or simply walking them on a leash. Any way, it creates some interesting sights on the walk down the road.



More of fixing the head

Thursday, April 16th, 2009

After the catastrophic timing belt failure and my failure to install a camshaft correctly, I have once again reinstalled the head on my car.

Here's the lower head reinstalled on the car with the manifolds bolted on:

 

This is me applying the annoyingly expensive anaerobic sealant to the cam carrier:

I'll throw up pictures of the cam carrier installed soon.

 Eamon

 

 

Travel in the Time of Cholera

Wednesday, April 15th, 2009

(Written originally on April 4, 2009, I’m feeling great now)

DISCLAIMER: RANT AHEAD

My iPod is on “Shuffle Songs” as I frequently have it in hopes of finding some music to cheer me up.

1. Undone (the Sweater Song) – Ben Kweller (cover)
2. Not the Doctor – Alanis Morissette
3. Medicate – Breaking Benjamin
4. Sick in Her Skin – The Get Up Kids
5. Bury Me With It – Modest Mouse

There are all these internet memes, or Facebook herpes as some have deemed them, that are supposed to reveal all the secrets to your life by simply putting your iPod on “Shuffle Songs” and recording what comes next. I hate these memes; but after an hour of lying clenched in the fetal position from whatever bacteria, parasite, or who knows what decided to attack my GI system this time, the songs that keep coming up on my iPod are not helping me in my attempts to mentally escape. I start to notice the dark sense of humor of my iPod’s brain.

6. Silent Talk – Michel Camilo
7. I Feel It All – Feist
8. Wonderful – Stone Temple Pilots

I’m not joking. As I write this, these are the songs coming up on my iPod. Meanwhile, I am curled up in utter exhaustion with pain from what feels like an agitated porcupine in my deflated abdomen.

Isiolo, Kenya is referred to as “Texas” by the locals. They are definitely right on with the barren, dry, and unrelenting heat aspects, but I hope Texas isn’t currently in the middle of a cholera outbreak (edit: I never had cholera, don’t worry). No matter how many times I stick my head under a cold faucet to try to bring my body temperature down, I still find myself sweating profusely—which isn’t helping me in my attempts to thwart dehydration. I feel like any liquid left is actively clawing its way out any way it can find…from the sweat, to the river that is attempting to navigate my sinuses, to my frequent trips over the past 14 hours to what can barely be considered to be a toilet, I am clearly losing the battle. Never mind the liter of orange juice and the 2L of water I’ve forcefully consumed today. It’s the last day of our roadtrip in Northern Kenya and this is not my ideal way of spending it.

9. Dreams Collide – Colbie Caillat
10. Bullet with Butterfly Wings – Smashing Pumpkins
11. Listen to the Music – The Doobie Brothers

Finally, a bit of mercy. I’ll take what I can get.

And of course, a few photos…

Chicks, Part I

Tuesday, April 14th, 2009

I stare out the bus window, transfixed by the winding countryside.

 

My mother and I are visiting either yet another cousin or yet another best friend in the middle of nowhere. We hopped on the bus at a terminal near my aunt Mana’s apartment, and had been riding it out to the countryside for the better part of an hour.

 

The sprawling city faded slowly, as if traveling back through time. We started as ants in the midst of modern glass and steel skyscrapers, slowly working our way through outcroppings of shorter concrete skyscrapers. The term ‘skyscraper’ started becoming generous as buildings grew shorter and shorter the further we traveled. Eventually, the buildings were content to tower only one or two stories tall. Abruptly, the things I considered buildings stopped.

 

Different kinds of structures took their place. These were shacks, small and squat, cobbled together from corrugated tin, old lumber and twine. Doors and windows ceased to exist, giving way to simple empty holes. Floors were made of the dirt the shacks were assembled on. Wildlife previously restricted to chubby pigeons and translucent lizards now milled around in the streets in the form of dogs, goats, a few pigs and multitudes of chickens.

 

My mother walks purposefully as we disembark, her eyes straight ahead and her camera bag safely tucked underneath her arm. We weave through clusters of dirty, bronze-skinned Brazilians in torn clothing, walking straight up to one particularly innocuous shack. My mom calls out a name, and an older, apron-clad woman rushes out the door-hole.

 

It’s still early in the visit to Brazil, and my Portuguese is lacking. I make pleasant, forced conversation with the woman for a few minutes at my mom’s request, but we soon run out of shared vocabulary. My mother picks up the thread, and I’m left twiddling my thumbs in the center of the three-room shack.

 

To call them rooms is a bit of an overstatement. There are three rough partitions – one with a set of pots and pans and a small table, one with a set of beds, and another that I can’t quite see in. Curtains hang from beams strewn across the ceiling, offering some measure of privacy to some of the beds. The older woman notices my boredom and takes me by the hand.

 

We walk out to her backyard, a small area fenced in with rusted wire and rotting logs. The yard is alive with fascinating creatures of all shapes and sizes; I don’t even notice when the woman releases my hand and retreats back inside with my mother.

 

I’m fascinated by the chickens, which come up to my knees. They emit the strangest little sounds and move around haltingly, as if perpetually caught in some scandalous act. I’m strangely compelled to try and hold one – for some reason, they seem like the kind of animal I’d like to hold. I put out my arms and give chase.


My mom would later report that she and her friend would sit and watch the doorway throughout their entire conversation. Every two minutes or so a chicken would run past, clucking frantically. A second or two later, I would run by, arms extended, a determined look on my face. This continued for the better part of an hour.

 

It was eventually time to go, and my mom called my name from the doorway. I dragged my feet walking back to her, unsuccessful in my chicken-holding endeavors. Her friend took me by the hand as I approached and led me to a small shed to the side of the house. She reached in and pulled out three fuzzy, dazed-looking chicks, handing them to me. I was overcome with joy to the point of being unable to speak, contenting myself by simply holding the chicks in my arms, feeling them settle in. My mom laughed, started bidding her friend farewell and then moved to put the chicks back. Her friend slapped my mom’s hand away.

 

“They’re his now!”

 

I bounced up and down, looking up at my mom expectantly. I angled the chicks upward so that they looked her in the eyes too. She gave me a quizzical look back, and then shot her friend a playfully angry look. “How the hell are we going to get them back to Mana’s?”

 

Her friend called on her son, and gave him instructions. He grabbed a bag big enough for two chicks to ride in, stuffed them in and then took the third and placed it gently in the breast pocket of his torn button-down shirt. He winked at me and followed us to the bus terminal.

 

We rode the bus back into town. I sat by my new friend, staring at his twitching breast pocket. Every now and then a dazed chick head would emerge and look around, as if playing peek-a-boo with me while drunk. I would cover my mouth to keep from laughing and drawing attention the bus driver’s attention, instead contenting myself to giggle under my breath. My friend would notice, smile, and put a single finger on the chick’s head, pushing it back down into his pocket. He’d wink at me, and the cycle would start anew.

 

 

I slosh through the waist-deep green tide pool, trailing my right hand on the black sponge-like reef. The sand squishes between my toes, and I start to sink gently if I stay in place for too long. Ever so often something catches my eye in a pocket of the reef – an interestingly shaped clump of seaweed, brine shrimp swimming around a small pocket, some snails trekking from saltwater puddle to saltwater puddle.

 

A particularly large pocket in the reef beckons. I look inside, but the light of day can’t quite reach the back of it. I stick my hand in.

 

A rush of overwhelming pain radiates from my index finger. The pain hits so quickly that I’m numb with shock before I can yell.

 

I pull my finger out of the hole and a flat crab the size of my hand comes with; it locked on to my probing finger with the longer and sharper of its two claws. Blood wells up from underneath the pincers.

 

“AAAAAAAAAAAAAAAAAIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII”

 

I try to grab for the crab’s pincer in an attempt to open it but the crab waves its other pincer at me menacingly, daring me to be that stupid. I stop reaching for the crab, content to simply continue to stare and scream. My mind races, trying desperately to come up with ways of getting this stupid crab off. I act on the only option I can conceive of.

 

I wave my hand back and forth above my head frantically, trying to fling the crab away. Blood splatters everywhere, and the crab turns into a makeshift flag. It seems to enjoy the ride. I bring my arm down and start crying during my breaks from screaming.

 

My uncle runs over from shore, yelling at me to hold out my hand. He grabs the crab in that skillful way all fishermen have acquired, holding its second pincer safely at bay. He smiles at me. I stop screaming and I offer a teary smile back.

 

He then breaks the crab’s arm off and throws its body into the sea.

 

I stare at the still-clamped stump of a pincer on my finger and start screaming all over again.

 

 

My mother, grandmother and I walk alongside an outlet of the Amazon in a city called Olinda. Beautiful architecture captures my mom’s attention, adorning the lefthand side of the street. The sluggish, brown Amazon and the street vendors lining it on the right side of the street capture my attention. My grandmother happily narrates to both of us as we walk along.

 

I stop cold at a street vendor standing next to a display rack. The thin, grizzled man has hung a variety of clear bags from the rack, each containing a particularly striking fish in crystal clear water. The fish take on all shapes and sizes, from beautiful, complacent angel fish to electric eels writhing in their strange, clear confinement. I build up some courage and try talking to the street vendor in broken Portuguese.

 

I learn that the man wakes up every morning and paddles his canoe back and forth across the river. He drags a net behind him, and when he gets back to shore he takes everything he catches in the net and puts it in clean water to sell throughout the day. When he sells everything, he goes home.

 

My mother and grandmother are now by my side again, having continued walking for a bit after I stopped. My grandmother bends down, eager to pounce on this prime opportunity to spoil her grandson. “Which would you like?”

 

My eyes light up.

 

We come home with six or seven bags of beautifully-colored, interestingly-shaped fish. Unprepared for such an occasion, my grandmother scours her cabinets for a suitably-sized container. She brings out a gigantic, flower-covered glass bowl big enough for all of them.

 

I dutifully fill the bowl to its brim with tap water and dump all of the fish in at once. They appear confused, slowly bumping into each other and the sides of the bowl as they reorient themselves to their new surroundings. I watch them swim sluggishly for hours, until it’s time for bed.

 

I wake up the next morning and scurry over to the bowl. A single eel looks back at me, leering. Little chunks of uneaten fish line the bottom of the tank.