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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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cerb4.5lee said: I can't think of these without thinking about the pedal box in them to be honest. I reckon that there's more room in my Caterham's pedal box than there is in these for sure. Such fond memories of these and the VTS though, don't get me wrong. Those with even slightly approaching average feet I feel would come up against the steering column. I dove one and liked it in period and recommended it for the Mrs at the time (she had/has small feet).Never bought it. This one would be a time warp! Just don’t crash it
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Jte3397 said: With a few notable exceptions that are mainly at the high end of the market, car as investment is best viewed as a way to justify what is ultimately not a sensible hobby. I'm about break even on my M3 if I ignore what I could have done with the money instead.We had a Ignis Sport that we bought in 2013. 41k miles, 1 previous owner for £1900 (£2700 in todays money) and we sold it ten years later in 2023 for £3000 on 116k miles so made £300 profit. The 17 year old lad I sold it to crashed it within a month of passing his test. My Celica GT-Four I paid £3000 (£4500 in todays money)
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XTR2Turbo said: I am curious how many of the EV's sold in the last 10 years will still be on the road in another 10 - 15 years though. Already cars younger than that are broken for their batteries and uneconomic to repair if accident damage or faults. Predicted EV Vehicle life expectancy is 16 years. Car lifespans take into account those that are written off which is why when you look around you see plenty of cars older than 15 years. If you were to remove early life write offs then the average age is close or greater than 20. As for EVs, between 2010 and 2020 just 100,000 EVs were sold, a
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I'll always remember overtaking 3 cars in a row years back in my Sierra XR4x4, and the one in the middle didn't look and crashed into the side of me whilst I was overtaking. So I've always been a bit nervous doing that ever since really, I've still done it don't get me wrong, but I just hope that the other drivers are concentrating when I've done it though.