Epic 4-hour mountain bike ride today in Upper Stevens Creek Park

5 responses to “Epic 4-hour mountain bike ride today in Upper Stevens Creek Park”

1. 

   jurvetson

   Jan 12, 2015 at 1:35 am

   I was wearing the cool Neil Armstrong shirt that my biking buddy (and photographer here) gave me: The rest of the posse…

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2. 

   AGrinberg

   Jan 12, 2015 at 4:04 am

   I’ll put it on my list…

   The bigger wheels increase the center of gravity, so greater chance of falling?

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3. 

   jurvetson

   Jan 12, 2015 at 5:14 am

   Nope as the frame geometry makes up for that and you ride with saddle, handle-bad and crank shaft in similar positions. But the larger wheels put the wheel mass farther from the hubs, providing a stronger gyroscope effect and inertia. Rocks and bumps give less rolling resistance to a larger wheel. I’m not sure of the source, but it seems like a more stable ride with the larger wheels.

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4. 

   AGrinberg

   Jan 12, 2015 at 7:16 am

   Thanks – makes sense the bigger wheels sure should help over the bumps.

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5. 

   aeroculus

   Jan 12, 2015 at 4:38 pm

   funny, I went with 29s for my 13 yr old son last year, and I am riding it more than him.

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