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Originally Posted by xntrx
A conventional drive will lose between 10-25% from friction and pumping (auto), so that's not too terrible.
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Not so, at least per ORNL research, which puts drivetrain losses at 4-7%
Where the Energy Goes: Gasoline Vehicles Meanwhile, the BEST you can get from a prop is about 80%.
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FAR 103, and not wanting to be limited to location.
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So you're going to drive your ultralight around on the roads? But I'm still confused about the why part - unless of course you're planning to take the traditional meaining of IFR (I Follow Roads*) to its logical extreme.
Off topic, but I once worked for a guy who claimed he was following California Hwy 99 north of Bakersfield in the fog, and wound up flying under a freeway overpass.