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2026. 7. 17. 작업
I'll apologize in advance for a fuzzy question. My problem consists of two parts. For starters, I'm trying to buy a DC engine for learning purposes and most of them only specifies the watt (which I can use in order to convert and get the horse power that I'm normally used to) or torque. And secondly, I've never built something like this before, usually I build bikes or cars. Normally engines are pre-designed to haul a car or two but when it comes to DC engines I could accidentally buy something that's meant to drive a overhead crane. What torque would be required to match your run-of-the-mill
This is a great vehicle dynamics question that essentially has two parts to it: Is the motor able to hit top speed, 120 mph? Is the torque enough to accelerate it to top speed within 5 seconds? The motor in question Power : 1000 W (~ 1.36 hp) Speed : 3200 RPM Torque : 1.91 Nm Something interesting to note here is the apparent discrepancy between the three quantities. Since the three quantities are related, one could back-calculate how much power is delivered by the quoted torque at 3200 RPM: Power = Torque x Angular Speed = 1.91 Nm x ( 2π / 60 x 3200 RPM ) 1/s = 640 W So clearly, something is up with the manufacturer's claimed figures . For 1000 W output at 3200 RPM, the required torque should be around 3 Nm, not 1.91 Nm. However, errare humanum est , so we'll stick with the generous 1000 W for the rest of this answer. So what does 1000 W buy? In short, not much. The aerodynamic drag force alone, in the absence of other parasitic factors such as rolling resistance, inclinations and hea
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Many moons ago I owned a 156 SW V6 that I bought by accident but really should not have sold. 156 V6 It was a car that absolutely adored the noise and looks but that I never really trusted for main family car duties. It also seemed to be a magnet for other people to drive into. It was replaced by a surprisingly brilliant Octavia VRS which lacked the drama of the 156 but has been absolutely faultless for 6 years, massive inside, still relatively rapid and actually pretty good to look at too to my eye. The main problem with the Skoda is that s just a bit too good at what it does (a VRS Estat
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Many moons ago I owned a 156 SW V6 that I bought by accident but really should not have sold. 156 V6 It was a car that absolutely adored the noise and looks but that I never really trusted for main family car duties. It also seemed to be a magnet for other people to drive into. It was replaced by a surprisingly brilliant Octavia VRS which lacked the drama of the 156 but has been absolutely faultless for 6 years, massive inside, still relatively rapid and actually pretty good to look at too to my eye. The main problem with the Skoda is that s just a bit too good at what it does (a VRS Estat
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사고 발생 시 연료 운반이 심각한 위험을 초래하는가?
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The one thing embedded in my head from over forty years of motorcycling is always leave room for you to make that unexpected avoidance maneuver...or be killed, you build a kind of sixth sense observing what traffic does, its hard to explain but its there.I used to commute by bike on one of the most dangerous roads I've ever come across...the Edinburgh city by-pass, to say the standard of driving was horrendous would be an understatement, I kid you not there was a crash every other day, sometimes every day.Those bike skills of observation has served me very well over the years driving cars...I