This is not saying that this car is going to be easier to drive, nor am a specifying what that weight distribution may be. The only way out of a turn in any car is to lay the gas down to get traction and rear weight distribution…fast. The heavy rear of the car is going to have more momentum than the light front end; because of that, it takes more effort to change the heavy ends direction – why it lacks that effort is where all the tire loading stuff comes in – which you point out. Why do you think race cars add a brake bias? Fan out to show all the cards. A longer moment arm creates a larger counter-moment against this lifting effect to keep traction on the rear wheels. Trump Administration To Roll Back Draconain Obama CAFE Standards. The Turbo also understeers on the way out as the front lifts and some torque is thrown forwards, but to a much lesser degree – so I just initially aim inside the track out point then carry her out there on the gas. Consider a smaller number, a 1/3 chance lottery with 3 choices. And as this is not a school environment when teacher has the truth and shares it with the student, I'd take the approach to try to understand him through questions: What he said was more like an invitation for discussion about the concept of "winning or not, as a single event". Porsche can make things work. Is the race about who has the fastest car? The Silvia was faster in a straight line and had much better brakes, but every single corner would see the MR2 pulling out a few metres lead on exit. What does “Four selected students are not born in the same months” mean? Needless to say, the rear brakes do more work on a car that has a greater rear weight distribution. It was awesome for me, however you should know that in stock form it leans hard to the outside of the turn. Tire traction is directly proportional to the vertical load on the tire (i.e., a tires traction is directly proportional to the weight that is on it). Editorial Subjects Calendar; Editorials, Articles, Local Events, or PSAs; Insertion Order; Videos . For example, the first generation Audi TT’s that came out were known to be good handling cars. Although he did not say it I assume the author was not intending to imply that weight in large amounts actually behind the rear axle would help with turning. At indoor sites, we use wire racks and table top plastic stands to offer copies. Equitable distribution law presumes, further, that an equal (50/50) division of the marital property will be equitable. They also seem to be very overtyred to the point they mainly rely on grip over controlled slides due to the weight bias making them hard to catch in an oversteer situation. That’s pretty much all I can think of for now. i dont have a motorcycle but i have a bicycle. I don’t know your exact car, but cars from this vintage generally have the engine mounted well behind the front axle and the driver sitting close to the rear axle – generally the best layout for a front engine car. Here are some of the benefits of having a rear weight bias: The reason for these benefits is as follows: Better braking: The Porsche 911 (just an example, could be a GT40 or Ferrari) has always been known for its great braking ability. To make cars predictable in turn-in you need aggressive rear wing BUT that same rear wing gets in way while putting power (remember to get maximum output drivers get on power even before steering wheel is straight) And this problem is even more apparent in long turns where drivers needs to stay on power to maintain max cornering speeds (Gs) The problem is that, they just don’t handle very well at the limit. How to explain Monty Hall problem when they just don't get it. The goal is to navigate the corner in the quickest way possible (duh). F1 cars are en excellent case study of how engineers try to find the best weight distribution taking into account ALL the variables. Or does it have to be within the DHCP servers (or routers) defined subnet? You could explain that there are actually many more possible outcomes because there are more ways to lose than ways to win. : Congratulations for engaging in discussions about maths with your children! How to explain that winning the lottery is not a 50/50 distribution? (Hint: while we have described all possible game states—winning, losing, and tieing—we haven't described all possible player states. Definition N50. The Porsche has weight behind the rear tires. Also I believe because of how soft the suspension was it would have noteworthy balance changes off from 50/50 when accelerating or breaking hard. You seem to have misunderstood him. If all you’re saying is that a 50-50 distribution is the most fun, that is your opinion and you have missed the point of my post…. The song, produced by Soul Professa, features fellow American rappers Snoop Dogg and Young Jeezy. Your son said either you win, or you don't which means he's seeing two possible outcomes and then dividing 100% by 2. The 911 (I’ve driven one for 20+ years) was initially designed as a compromise. Porsche aren’t moving the engine to change the weight bias. bet that the next house door you see will be open or closed...it's a binary result, but with unequal probabilities). Eliminating weight overhanging the front and rear axes, and using throttle and brake pedal properly will solve many issues. Same thing applies during acceleration which is the reason why its so easy to do stoppie’s and wheelie’s. This makes for very long front ends and small cockpits with cramped foot wells. a balanced weight distribution would do neither as it would lose traction at the front and rear equally. When people tell you a car handles well, they are actually referring to the tune of the suspension. If your son is not Donald Duck's super-lucky cousin - whose name I cannot recall - then you will give him some food for thought. Note 2: I should have made it clear that we are there after many discussions on probability so he understands the "number of positive outcomes" / "number of all possible outcomes". A perfect example is the post directly above mine from professor Jay and his bicycle. But that same challenge is makes them so rewarding to drive for shorter stints. Of course the 991 is faster than the outgoing model around the track, but the weight distribution is only one of the many things they changed. The majority of cars have the engine in the front, and of course the drivetrain too. But mind (1) and (2). But also understand that I’m talking in generalities. Now lets look at the same car but reverse the weight to be 58% front and 42% rear (say a front engine / rear drive car) and we’ll even keep the same low center of gravity and 100″ wheelbase. He is obviously wrong, me being the educated father and him the child with silly ideas. I am not a professional driver or a mechanic or a race engineer. this was done to make the car more stable and predictable over bumps/uneven surfaces. I would also like to hear your explanation of why pretty much every race car has their rear weights around 60% regardless of down force. it is balanced and thus handles. This comes down to the driving style differences between the two types of cars and their intended uses. Is there a way of defining infinity so that it both meets the criterion of being a number as well as being greater than any real number? Let's say there are 100 lottery tickets in total and there is only one ticket that will win you the prize. Also not every corner is short many of them are slightly longer i.e the mid turn is big takes time to get wheel straight AND tbis is where rear weigh bias will induce power on understeer. The article is wrong. So now you might ask, “Why don’t more cars have a better weight distribution?”, well, in the real world; its hard to make an everyday car like this because it requires moving the engine very far back. The examples that you’re trying to give with rear weight biased racing- or even supercars are reduntant, because those cars are not meant to lose traction (ever). motorcycle dude. But there are other kinds of probability distribution, like the Gaussian distribution, a Poisson distribution, and anything you could name, under which different outcomes do not in fact have the same probability. Please show me the original quote. Many 911’s need to use power to kill understeer on entering a bend. The mechanic guy above already told you that that’s bullshit. believe it or not this thing does not never ever ever understeer!! Is most of the weight near the CG (center of gravity) or not? This is one reason why even mid/rear engine sportscars don’t have their engines positioned all the way back. I’ve just bought an adjustable suspension kit for my car and was hoping to achieve a 50:50 weight distribution as I thought this was best. I’m writing about what the fastest way around a track is. The engineers are the ones that design and change certain aspects of the car (tires, suspension, aero, etc) in order to make the car more “balanced”. You can make a car that is FR handle as well as a MR. No where does it say that a car that is 50/50 is bad. The discussion of roll bars is beyond the scope of this article and is more about suspension tuning. There is many factors outside of weight distribution that effect the overall handling balance of the car, especially if downforce is involved…. So why isn't it a simple 50/50 gamble? Each ticket is either a winning one or a losing one, and there is only one winning ticket. Events that are familiar are assumed to be more common. I don't think that talking about probabilities formally would be to any benefit for your son. Many of these cars handled very badly. Most judges in this state favor awarding each party fifty percent of the marital property, unless certain factors make a good case for an unequal distribution. A car with minimal power and traction is praised all over the world, because of it’s BALANCE. On entry, mild trail braking turns the car into a mild oversteerer and helps turn in. Let's get some tokens, say, bits of colored paper. Virtually all modern road race cars have somewhere between 55-65 of their mass over the rear wheel. The concept of an ‘ideal’ weight distribution assumes an identical approach to the corner, in this case, a steady-state corner. The Porsche has weight behind the rear tires. I am trying to understand why my car handles so poorly. I had a Miata before this. How to explain the sample space of Monty Hall problem? Another approach could be to get out of house to some basketball court and take shots blind-folded. – Better braking because brake force is distributed better between front AND rear, instead of being more front-biased. You've got 100 out of 100 tickets. If that is important to you it’s something to keep in mind. If it is flawed, no matter how you try, you will never be able to make the setup as perfect as with correct weight distribution. where as the frs has a tendency to act unpredictably over bumps due to the large disparity between front and rear natural frequency. Don't spoil that it's 2 winning comparisons in 6 possible comparisons. If you don't buy any tickets at all, what's your chance of winning? This post is old and I’m late to the party here but would appreciate a response…. - Yakima DK, Adjustable end-links for classic muscle cars, California looks to remove freedoms after Kevin Hart crash, The shocking importance of an Oil Catch Can. why do you think that a rear weight bias gives the tendency to oversteer? Explain how in the lottery there are millions of losing tickets to the point where he would have to find the red piece not in a small bag, but in a huge garbage bag that was packed full of blue pieces but still only had one red piece. Bayesian statistics allows you to choose another prior. It gives the tendency to oversteer because of Newtons first law. The reason why the 911’s these days and your Fortwo push when at the limit is not because of the weight distribution, but because of how the suspensions are tuned. This notion of "probability distribution" can be a good way to put words to the notion that just because you have X possibilities, doesn't mean they all have to be equally likely... and that saying they are is in fact a very specific thing to say, something you'll only do under specific circumstances (either they actually are equally likely, or you have no information to say they aren't and thus follow the Principle of Insufficient Reason). The point being that there isn't much difference between 0 and 0.000000001. Trail brake, mid to late turn in. Then, consider the winning pairs, which is the total number of choices minus one. In fact if you’re not cornering you want 99.9% of the weight on the rear wheels AT the time of acceleration. What are the probabilities of those?). This is of course one of the ingredients which if it’s there it’s better. But the acceleration and braking benefits of a rear-heavy car ARE desirable. Could you explain to me if that makes any sense? Thank you for reading my blog. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. BTW, there are rumors about the new C7 corvette favoring a rearward weight distribution…. Find the one for yours here. NORMAL DISTRIBUTION EXAMPLES:a)µ=50,σ=4Find area between 46 and 5046µ= 50z=( 46-50 )/4=- 4 / 4=- 1A = .3413OR34.13 %b)µ=50,σ=4Find area between 50 and 60µ= 5060z=( 60-50 )/4=10 / 4=2.5A = .4938OR49.38 %6/3/2017 08:19:00 …
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