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It's easier to get a smaller chainring. I found an elliptical, too. Much less fiddling. BK

Nice. My guess is that the Kind air shock has a lot to do with it. I noticed a great improvement in both ride quality and speed/handling with that simple switch. (Q2, 661). I ride about one sprocket higher for each situation, on roads I'm familiar with.

Something else to consider is that the ID of the boom widens out considerably (~1/8 inch) only a few inches below the clamp (Q2, at least). Try tightening the clamp just a bit, push the slider all the way down, and you can feel the play. I found this out after buying the extra-length slider...

Nice. But I'm curious, it looks like there is only a very weak if any connector between the head tube and the boom. What happens when you apply force to the bars? (In any direction) The reason I ask is that you don't want to be wasting effort bending metal. Is the front assembly rigid?

Yes to fairings! As a year-round commuter in rainy Seattle, I ride with a fairing on my Quest 661 about 6 months/year. But from the pic it looks like you have yours mounted too far forward. That makes the bike a lot longer, for one thing, but also you don't get the full benefit of having your...

I have them on the rear wheel of my Q661. They weigh the same as 4 AA batteries (3 batteries+ the device), so I duct-taped 4 dead batteries to the same point on the opposite spoke. Works great, looks beautiful. Two disadvantages: * They don't have the effect of forming a pattern below about...

Phone typing, worsened by autocorrect. Sorry! I wouldn't mind so much if they sounded like creeks. That would be peaceful.

Late to the party, but running spokes can sound like frame creeks.

FWIW, since I have never seen, let alone ridden, a Silvio or V .... There is more to a bike than speed. One big difference between the Q vs S or V is the near-field forward visibility. I got my Q mostly because I spend a lot of time mixing it up with urban traffic, not to mention urban...

Ummm ... There must be _some_ drag. Energy doesn't come for free. As a slow commuter, I'm interested in the "see or be seen" nature of this light. Please, "enlighten" us as you get experience with it. Also the cost is of interest.

Hey Cruzbiker - why would the orientation matter? Mine is opposite Wong's only because it makes the air inlets more accessible. I can't see why that would make any difference, but there's a lot of things I don't realize ....

After getting really tired of the constant squeaking put out by the original spring shock on my Quest-2 (more than 5000 often-rainy miles on it), and seeing that there was no way to lubricate it, I got an air shock. This did 3 things: 1) Perfectly quiet operation 2) Dramatic improvement in the...

You're going to need a screw extractor (duh!), which looks like a conical reverse-threaded screw. First you drill a small hole through the screw, then insert the extractor turning it counterclockwise (opposite a usual screw), as it tightens in the hole, it grabs the broken screw and rotates it...

Well, here's the problem. Aluminum is hugely variable in strength and stiffness. Easily by factors of 3, 5 or more (link below to one such table). The Cruzbike frames are built of 7075-T6 (one of the 7xxx anyway). I've done a lot with soft aluminum (2024) which is very easy to work, roll...

Hmmm ... I'm no engineer but I do believe the formula is right (I'm a physicist - fluid dynamics). Your G is for 7505-T6 aluminum, right? Another solution would be to move the joint at node 2 up to right under the handlebar (reducing L to near-zero in your toolbox above). There would need to be...

NE Seattle, Ravenna neighborhood. I can be found riding from there to my office at Sand Point every working day (B-G trail from U Village to NE 77th). Didn't realize there was a Seattle Cruzbike community! Never seen another. Count me in.

I reset my odometer when I got larger tires on my Quest-2 in 2013. Well, it turned 5000 miles today and there has not been a flat since then. Either wheel. Most of my riding is commuting and errands, something less than half on a bike trail, the rest on urban streets. I don't know if Seattle...

I don't quite get "node 6 about 3 inches behind node 2", but nevermind. What the "Silvio-like" model has done is to remove twisting of the vertical steering tube, without changing the strength of the extension tube/boom, right? That is consistent with what Chuck's model says: the weak link is...

Wooden chainstay!!! I would like to see a photo of that! What kind of wood? MrSteve is right that stiffening one part shifts the flex to another. This is another reason why JT's Silvio/Vendetta design is so good: he simplified the connection between the handlebars and the BB to one simple...

I'm going to guess the most improvement will occur between Node 2 and Node 6 (part of the flex is in the joint at 2, not included in this analysis). The reason I think this has two elements: 1) When John Tolhurst designed the Silvio and Vendetta, he stiffened this connection by connecting the...