This past week, I purchased a set of Revolights, which are a set of LED lights that attach to the rim of a bike and illuminate the front wheel and the rear wheel. While the engineering is amazing, it's too much for this blog, and beyond the scope of this post. Anyway, I was super excited to get a set of these, and get these on my current commuter bike, the Cannondale Synapse 105 (2012). 

I checked the website and make sure that my bike and we'll dimensions were in fact compatible with the Revolights system. Their website leads you through a series of steps to make sure that bike frame and wheels will accommodate the increased girth of the wheel. I thought that everything was kusher but my bike and my current wheelset, however I was sorely wrong. I figured that most road bike wheelsets are very similar, and I had known others who were able to affix the Revolight system to their road bike.

After opening the box, following directions, and getting the Revolights attached, I realized that there were significant problems. The light system attaches to for spokes on the wheel. In my particular case, two of the Revolight's attachment points were on spokes from the cassette side, and two attachment points were on the non-cassette side of the wheel. Although I tried to shift the light system towards the center of the wheel, each of the attachment points on the non-cassette side contacted the down-tube.  

After two frustrating days, I inspected my Shimano RS 10 wheelset and realize that the rim is offset towards the non-cassette side. In other words, the spokes did not attach to the center of the rim. In essence the spokes favor one side, and this caused the light system to contact the downtube no matter what I tried. I wondered if this was on all wheelsets or if this was a Shimano design, so I looked at my other wheelset, the Shimano RS 81, and it was also off center as well.

As you can see in the picture above, neither of the spokes attach at the actual center of the rim. Both of the spokes attach towards the non-cassette side of the wheel. This is not a problem when the spoke is coming from the cassette-side, as the Revolight does not touch the downtube fork in this case. However, when the spoke comes from the non-cassette side it protrudes out farther than the bike can accommodate.

I doubt that this problem is common occurrence among Revolight owners, but I think it's important to mention and may save someone else in the future a significant amount of frustration. 

Anyway, the Revolight has fantastic engineering and some of the best customer support I've ever seen. Kudos to the Revolights team, despite my little issue with the Shimano wheels. 




AuthorMatthew Certain

Few images are more recognizable or more evocative. Known simply as “tank man,” it is one of the most famous photographs in recent history.

AuthorMatthew Certain

"The constant change of pace associated with segment chasing fragmented rides and was irritating, they said. It's annoying when people charge off the front in pursuit of a KOM. If you want competition, go pin on a number was a usual refrain. 

But now its place in chain gangs and the regular weekend clubs runs is undeniable, BikeRadar spoke to some avid club riders to find out why. The pursuit of bragging rights, some banter fodder in the café or pub afterwards; a way to pep up a too-steady group runs; a convenient and historical record of the ebb and flow of an individual's form, and a combination of all the above, came up."


AuthorMatthew Certain
"I would like to thank my medical director for the permission to talk about this openly, and widen the scope of learning beyond our hospital to a much bigger arena.
This happened on a routine orthopaedic operating list not that long ago:"
AuthorMatthew Certain

Myst was supposed to change the face of gaming. What is its legacy 20 years later?

For the 6 million–odd people who have played Myst since its release 20 years ago, these images are as embedded in their memories as those seven immortal opening notes ofSuper Mario Bros. It's more than a beginning, it's a Pavlovian bell that tells your brain it's time for an adventure. But in 1993, it was even more than that: Myst, it was said, was wiping the slate clear for a completely new direction in gaming.

AuthorMatthew Certain

As of today, we have 63,723 photographs in the Aperture library. Bear in mind, that the majority of these photos were taken after Libby was born. That means we're averaging roughly 12,000 photos year, which is over 1,000 pictures per month, and averages out to roughly 34 pictures per day. 

Picking photos for any wedding slide show is gonna be difficult.  

AuthorMatthew Certain

Forwarded to me from another parent. Simply too accurate.  


11 Step Program for those thinking of Having Kids

Lesson 1

1. Go to the grocery store.

2. Arrange to have your salary paid directly to their head office.

3. Go home.

4. Pick up the paper.

5. Read it for the last time.

Lesson 2

Before you finally go ahead and have children, find a couple who already are parents and berate them about their…

1. Methods of discipline.

2. Lack of patience.

3. Appallingly low tolerance levels.

4. Allowing their children to run wild.

5. Suggest ways in which they might improve their child’s breastfeeding, sleep habits, toilet training, table manners, and overall behavior.

Enjoy it because it will be the last time in your life you will have all the answers.

Lesson 3

A really good way to discover how the nights might feel…

1. Get home from work and immediately begin walking around the living room from 5PM to 10PM carrying a wet bag weighing approximately 8-12 pounds, with a radio turned to static (or some other obnoxious sound) playing loudly. (Eat cold food with one hand for dinner)

2. At 10PM, put the bag gently down, set the alarm for midnight, and go to


3. Get up at 12 and walk around the living room again, with the bag, until 1AM.

4. Set the alarm for 3AM.

5. As you can’t get back to sleep, get up at 2AM and make a drink and watch an infomercial.

6. Go to bed at 2:45AM.

7. Get up at 3AM when the alarm goes off.

8. Sing songs quietly in the dark until 4AM.

9. Get up. Make breakfast. Get ready for work and go to work (work hard and be productive)

Repeat steps 1-9 each night. Keep this up for 3-5 years. Look cheerful and together.

Lesson 4

Can you stand the mess children make? T o find out…

1. Smear peanut butter onto the sofa and jam onto the curtains.

2. Hide a piece of raw chicken behind the stereo and leave it there all summer.

3. Stick your fingers in the flower bed.

4. Then rub them on the clean walls.

5. Take your favorite book, photo album, etc. Wreck it.

6. Spill milk on your new pillows. Cover the stains with crayons. How does that look?

Lesson 5

Dressing small children is not as easy as it seems.

1. Buy an octopus and a small bag made out of loose mesh.

2. Attempt to put the octopus into the bag so that none of the arms hang out.

Time allowed for this – all morning.

Lesson 6

Forget the BMW and buy a mini-van. And don’t think that you can leave it out in the driveway spotless and shining. Family cars don’t look like that.

1. Buy a chocolate ice cream cone and put it in the glove compartment.

Leave it there.

2. Get a dime. Stick it in the CD player.

3. Take a family size package of chocolate cookies. Mash them into the back seat. Sprinkle cheerios all over the floor, then smash them with your foot.

4. Run a garden rake along both sides of the car.

Lesson 7

Go to the local grocery store. Take with you the closest thing you can find to a pre-school child. (A full-grown goat is an excellent choice). If you intend to have more than one child, then definitely take more than one goat. Buy your week’s groceries without letting the goats out of your sight. Pay for everything the goat eats or destroys. Until you can easily accomplish this, do not even contemplate having children.

Lesson 8

1. Hollow out a melon.

2. Make a small hole in the side.

3. Suspend it from the ceiling and swing it from side to side.

4. Now get a bowl of soggy Cheerios and attempt to spoon them into the swaying

melon by pretending to be an airplane.

5. Continue until half the Cheerios are gone.

6. Tip half into your lap. The other half, just throw up in the air.

You are now ready to feed a nine- month-old baby.

Lesson 9

Learn the names of every character from Sesame Street , Barney, Disney, the Teletubbies, and Pokemon. Watch nothing else on TV but PBS, the Disney channel or Nick Jr. for at least five years.

Lesson 10

Make a recording of Fran Drescher saying ‘mommy’ repeatedly. (Important: no more than a four second delay between each ‘mommy’; occasional crescendo to the level of a supersonic jet is required). Play this tape in your car everywhere you go for the next four years. You are now ready to take a long trip with a toddler.

Lesson 11

Start talking to an adult of your choice. Have someone else continually tug on your skirt hem, shirt- sleeve, or elbow while playing the ‘mommy’ tape made from Lesson 10 above. You are now ready to have a conversation with an adult while there is a child in the room.

AuthorMatthew Certain