1/23/2024 0 Comments Already built rc drag cars![]() The other think I doubt about aerodynamic efficiency of those RC cars is their potential aerodynamic instability. a simple curved piece of plastic instead of a proper aerofoil. The wing on the car looks to be made equal thikness all the way, i.e. But the formulae are beyond me, (I like books with pictures and diagrams ) and I do not have any data to convert anyway. I know many wind tunnel tests are made scaled down, and the good and bad sides of that. Yes, it is a nitro car, and they sure need all the cooling they can get.Ĭutting the back out of the body you say? Does make sense, and I had ideas along those lines, even if I didn't think about making any huge cutouts. Sure, not weight in the same place, but nevertheless a massive diffrence in weight on such a small car. A wing as light as a couple of credit cards shouldn't have a huge impact on handling because of the weight, when a fuel tank containing 150cc or so methanol doesn't affect it too much. I thought that weight was a bigger factor than aero on those toys too, but I am having doubts now. Nothing beyond getting it to run, that is. And about the engine, there are no modifications planned. The guy used to race the car, and just thinks it's fun to get it out and do something with it again. There are other bodys available at low costs for sure, but I believe this is a ultra low budget project, if anything gets done at all. *Maybe adding dive plates/splitter plate to the front of the car. Possibly opening up the louvres above the front wheels and air outlets behind the front wheels too. *The rear of the body gets a few ventilation holes to evacuate hot air into the low pressure zone behind the car. *The "intercooler air inlet" on the body is opened up and air is ducted from it to the engine to cool it. *Flat bottom added, with venturi tummels at the rear (size probably limited by rear suspension) How do you guys think such a car would react to modifications along those lines: We started talking about aerodynamics, and he said the car became undrivable if he removed the rear wing, so obviously it does something even on so small cars and moderate speeds. He asked if I knew how to make it faster, both in a straight line and around turns. A guy showed a picture of a RC-car looking like some old DTCC Mercedes or something like that, he said the top speed was close to 100km/h. A flimsy plastic body looking like some real world racing car, but air inlets/outlets aren't even open, the bottom of the car is open and so on.īack to the MSN discussion. They generally have no serious aero equipment, except for a rear wing at best. After a discussion on MSN I started thinking about the importance of the aerodynamics on small radio controlled cars, say 50-60cm long and top speed 60-100km/h.
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