Yes drag and weight will limit your top end,but say that is probably 5 mph,different than a more aerodynamic body.Even if its 10 or 15 mph,a car with the potential to go 180 by gearing is going to actually run 165 MPH if you can get a long enough straightaway to get it wound out.I doubt that aerodynamics would slow something down 15 MPH even.Weight would be more of a factor on acceleration,but I have seen heavy cars beat light cars because the heavier car got better traction.Going fast,I had more trouble keeping the thing on the ground.You dont just go floor it at first,you drive the road,figure your shutdown points for the curves,and then you go faster and see what happens.Aerodynamics figures in to how the car handles and stays or doesnt stay on the ground.Older heavier cars actually are better to go fast in the straightaway because they are not lifting off of the ground as bad.Light cars are easier to wreck especially in a curve because there is not as much weight per wheel on the ground.By using the wind to your adavantage with a spoiler or something you can make a light car perform like a heavier car.Just look at Nascar,they have all of that figured out,and still can come off of the ground.Look at outlaw stock cars,they are some sheet metal welded together,even more square than a 55 Chevy.They go fast,arent real aerodynamic,and stay on the ground because they use the wind to help them. If you raced and built engines,surely you know about gears?I dont care if a car is made like a brick,if it will stay on the ground at high speed,and it has the gears for high speed,it will get there if it has enough road to wind it out on.Wind resistance is a big deal,and more power helps,but it is not a real big number over all the different stock cars that are at least modern styled.
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Today's Featured Article - Box Plow Blues - by Tom Schwarz. One of the first implements most tractor owners obtain is the box plow. For very little money, this piece of equipment promises to plow and flatten any hill or vale on your ranch road or farm. At least that's what I thought! As simple as a box plow appears, it can be rather challenging to make work correctly. In our sandy soils of Florida, traction is king. You can never have wide enough tires or heavy enough weights to get all the traction you want … unless you own a monster tractor. U
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