Thread: Fastest bike?
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Old July 3rd 18, 08:58 PM posted to rec.bicycles.tech
JBeattie
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Default Fastest bike?

On Tuesday, July 3, 2018 at 11:58:10 AM UTC-7, wrote:
On Tuesday, July 3, 2018 at 7:14:03 PM UTC+2, jbeattie wrote:
On Monday, July 2, 2018 at 10:41:15 AM UTC-7, Frank Krygowski wrote:
http://www.businessinsider.com/canno...ance-2018-6#-3


This has been the talk of the house. https://www.youtube.com/watch?v=ppgthzi9_0Y 100 watt savings descending? Really? I suppose if you have an incredible spin and are drag racing straight descents, although 100 watts still seems like a stretch. 2 kilo weight penalty going up.

My son's peak power output descending on the way to work this morning was 1,100 watts. That was on a 16% descent with no pedaling. Got to love strain gauges. The road is so broken up that when you have the crank arms horizontal and you hit a bump while posting, the power spikes.

-- Jay Beattie.


Power is force times speed. If his crank arms are stationary while hitting a bum he doesn't suppose to measure a power spike. Besides that the force on the left en right crank are in opposite directions. I don't know what power meter he uses but if it is the garmin Vector 3 pedals the power spikes are caused by a ****ty designed battery holder.

Lou


The Stages meter will record a momentary spike, and the meter is in one arm only. He does not have the two-arm model. I could get more details. He works at Stages. https://stagescycling.com/us/?gclid=... AEgI99fD_BwE

-- Jay Beattie.
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