3 ms·
> Anything can fly if you slap modern 7K RPM BLDC hobby motors on it. Is 7K RPM supposed to be an impressively high number?
by pengaru 5y ago
> Anything can fly if you slap modern 7K RPM BLDC hobby motors on it.
Is 7K RPM supposed to be an impressively high number?
- mlac 5y agoIt’s ~10,052,473 times faster than the earth spins, so it’s got that going for it.
- pengaru 5y agoAnd it's the same speed the iron 4-cyl ICE in my shitbox redlines... 7K strikes me as an exceptionally slow hobbyist scale electric motor, not the kind of thing I'd point out as capable of making anything fly.
- 0xbadcafebee 5y agoJust because a motor can sit on your desk and turn at 7k rpm doesn't mean it can pull a flying chair off the ground
- xwdv 5y agoWhat is the maximum possible RPM of something if it could spin at the speed of light? Shockingly low.
- dekhn 5y agoNo, but the real point is that the power to weight ratios of hobby BLDCs have absolutely gone crazy over the past 2 decades. Lots of work put into their power efficiency to maximize flight time on batteries.