Wrenching and bike maintenance

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Open Letter to Garmin

Dear Garmin,

It's been painfully obvious to even the most casual observer that the fitness end of your business model is far from a primary concern to your executives.  Between continually pushing back your “revolutionary” Vector power meter, firmware that is loaded with bugs, devices that crash frequently and expensive, limited use mapping cards.

Yet another dead sensor.But perhaps the most egregious infraction, at least in my mind, is the crappy quality sensor that you bundle with your cycling GPS units.  For something with supposedly so much research in it, how in the hell can you build such a shoddy product?  First of all, the design of the speed sensor arm lends it to being caught up in the spokes any time it should shift even a small amount.  Secondly, the quality of the Reed switch in the speed sensor arm is utter crap.

I've been through five speed/cadence sensors in the past year (including two in the past WEEK!)  Each and every time the Reed switch has gone bad, either from a small shock or just random cessation of existence.  Seriously…there has got to be a way for you to make a decent quality sensor without losing money on it (although you seem to be fine with losing money, what with the Vector program purchase and subsequent failure….)

So while you're busy ironing out the Vector trainwreck, I implore you, on behalf of all the useless speed sensors out there, USE MORE ROBUST ELECTRONICS!

Since this request will probably fall upon deaf ears, perhaps there is a way to attach a more robust sensor to the existing Garmin unit, even if it's not a pretty solution.  I'll try that in the future and post results of how it works out.

Dura Ace 9000 Wheel Photos

Looks like Shimano's new Dura Ace carbon wheels were on display this past weekend (on top of a Team Sky support car.)  These look like 60mm rims to me, but they could be 78mm depending on the perspective.

Interestingly, it appears these wheels are set up for 10 speed, so they probably didn't go on the bikes that have been testing the new 11 speed Dura Ace 9000.

Photos after the jump:

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More Dura Ace 9000 Photos

As I talked about in my previous post about the new 11 speed Dura Ace group, there has been some wholesale redesign of the group.  Some new photos (actually scans, it appears) have surfaced, giving some more depth and detail to the group.

First up, the rear derailleur:

Dura Ace 9000 Rear Derailleur

From what we see here, it looks like they've redesigned the P-Knuckle a little bit and stylized the outer parallelogram pieces to look more “swoopy.”  The barrel adjuster also appears revised, and looks to be metal (could be glossy plastic, but aluminum would be nicer.)  The cage shape looks a little more angular with more material on the bottom of the cage.  Overall it doesn't look too bad, and I'm sure it will be typically smooth, Shimano trademark operation.

More photos after the jump:

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The Irrelevance of the Triple

The irrelevant triple[dc]S[/dc]ince my previous post apparently stirred up a bit of controversy, I think it's appropriate to address the following question:

"Why didn't you include triple cranksets in your comparisons?"

Well, the simple explanation is because triples are irrelevant.

"What?"

Yes, they're irrelevant.  With the rise of compact gearing and wide range cassettes, triple cranksets have been relegated to the dustbin of cycling history (with the notable exceptions of loaded touring and possible commuters.)  But the question remains, why is this the case?  Let's find out.

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Choosing Crankset Gearing

As winter gives way to spring, riders are storing their trainers and heading outside to ride on their favorite roads once again.  Spring is also the time in which many people consider upgrades to their bike, and one discussion I've seen relatively frequently is the “compact vs standard crankset” question.  Apparently, choosing crankset gearing is one of those things that people have a hard time deciding upon.  They post to forums, newsgroups, and Facebook groups, asking for an opinion on which crankset gearing their friends use.

Why not figure out which crankset gearing works best for you?

What are the benefits of each?  Which type of gearing should you use?  Let's explore the question of choosing crankset gearing and help you figure it out.

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