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• #49802
Reposted bike and reposted joke.
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• #49803
awwww QQ
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• #49804
fuck off
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• #49805
what is with you RPM?
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• #49806
^ is that a sugino 75?
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• #49807
Looks like it
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• #49808
wow
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• #49809
Steady now...
Cinelli Laser Hyperion -
• #49810
Is that a Foffa?
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• #49811
With a strain gauge.
Power is the force x velocity produced by the rider. One of the first places in the drivetrain to experience this is the crank. So it makes sense to measure it there.yes but the force has to take into account the actual cog in back, otherwise it's meaningless, especially if were talking velocity of the bike.
i honestly don't see the meaning in measuring realtime power before it hits the road.
a force of 5 newtons exerted by the rider at the crank when in the small cog, means a very different thing than when in the big cog. unless the velocity slows down exactly linearly as the mecanical advantage increaces???
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• #49812
Want to see more of this.
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• #49813
yes but the force has to take into account the actual cog in back, otherwise it's meaningless, especially if were talking velocity of the bike.
Power measurement equipment is for measuring the rider's power output. SRM are the best at doing this.
Why would you do this differently, and for what reasons?
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• #49814
The different gearing doesn't make a difference though does it. Whether you're pedaling at 120rpm or 70rpm to do the same speed you need the same power.
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• #49815
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• #49816
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• #49817
I love that green Serenity, never thought it was suitable for Bike Porn but I'm glad it's here now.
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• #49818
A noobie just posted some of his bikes on the welcome thread am jealous.
You guys are the arbiters of bike porn taste, discuss.
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• #49819
Want to see more of this.
agree
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• #49820
yes but the force has to take into account the actual cog in back, otherwise it's meaningless, especially if were talking velocity of the bike.
i honestly don't see the meaning in measuring realtime power before it hits the road.
a force of 5 newtons exerted by the rider at the crank when in the small cog, means a very different thing than when in the big cog. unless the velocity slows down exactly linearly as the mecanical advantage increaces???
In your last paragraph, you are struggling towards the basic understanding of mechanics which will allow to see that measuring at the crank is the best way to determine the effective power output of the rider. For all practical purposes the rear wheel power measurement is fine too, the number will be slightly lower as transmission losses are already gone, and not consistently or linearly related to crank power as transmission loss varies slightly with gearing and condition of the chain.
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• #49821
Shexy!
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• #49822
this bike is a beast, what stem is that?
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• #49823
1000 of 1000
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• #49824
looks as stiff as an iron girder
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• #49825
^ matron
Who makes that ^^^^ ?