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For wheels,  the mass (and For wheels, the mass (and mass distribution) matters more than the radius. You can find lighter 700c wheels than the 451 wheels on the quest and they take less energy to get spun up to speed. Once you consider the whole system, the rider, the bike, the wheels...

I disagree with the validity I disagree with the validity of the results. Unless you are worrying about seconds on hour courses, repeated runs (with not too much wind) will tell you exactly what you want to know and how much of an effect it will be. And you can argue that doing the tests in...

Has anyone [on staff] over at I know Bryan has reviewed Quest and Sofrider. I don't think they've reviewed Vendetta and I'm quite sure they haven't reviewed the new Silvio. It would be easy to argue that this would be a good time for exactly that. :)

I'll point out that there I'll point out that there used to be a lot more of "this opinion" over at BROL. As more and more people got experience and as a certain-shall-not-be-named-but-we-all-know-who-she-is kicked-@$$ at RAAM, it has largely gone away. People are free to have their...

Steamer is still really hot Steamer is still really hot on this. You can see some real world results in this thread. I'm hoping to write my own software to do this as well. Stay tuned. :D

I made a set of panniers... Wait, wait, wait, wait! I didn't read that right the first time. You made the panniers? O.k. Now you gotta show more pictures of them. Usual rule is: no pictures, didn't happen. This time: More pictures, or you bought 'em in a store!

The camelbak won't work well The camelbak won't work well on its side unless full (think of where bottom of hose is). I think this is the issue your having (I have no issue drinking from mine which is same model).

 If you know total mass of If you know total mass of bike/rider and the elevation profile of a coast where you save precision time, distance information (GPS), you can solve for CdA and Crr. The more trials you do, the more accurate.

 Hi trplay,  You can use roll Hi trplay, You can use roll down tests to evaluate different bike, rider, positions with pretty good precision. And it's a lot cheaper than $500/hour. :D

Hi Maria, I've ridden both Hi Maria, Huh. I wouldn't have guessed that for the Silvio V2 (I'm sure the difference is much larger for the Silvio V1.x). But guessing at aerodynamics isn't easy (I'm assuming almost all of the difference is aerodynamic drag). The real question is: Did...

 You can try carrying a You can try carrying a recloseable cable tie with you and just putting it on when needed.

That fork does look like a That fork does look like a very interesting starting point. I can't tell if it's steel either and I'm a little concerned those tabs wouldn't be ideal for the front triangle, but I'm willing to bet something could be worked out (even as extreme as fiberglass and carbon...

but Mrs Ratz would be I think I'm just a bad person: I really did chuckle when I read this. :D

I agree with Ivan. Nicely I agree with Ivan. Nicely done and very practical for commuting. Your rack is very helpful as it holds some of the weight and makes sure it stays out of the wheel.

 Hi Shahmatt,  You know the Hi Shahmatt, You know the rules: pictures, or it never happened. :D Cheers, Charles

Hi SS,  Thanks for the Hi SS, Thanks for the updates. Failures like this are expected. I'm following with keen interest to see how it looks at the end. cheers, Charles

 Andrew, for the win! Andrew, for the win!

 (edit post refused to work (edit post refused to work so I gave up after half a dozen tries)

I'd print a bike (or, well, I'd print a bike (or, well, at least the connecting joints) like this.

Not quite busted... :) Hi Bob, I'm not, but I do have a bicycle Pinterest page that could be called as such. :D I'll also point out that having pictures can help people tell a lot more than just a description. And you never know when Google search will bring you to such a page and...