What is the Concept Behind F1 Tyres?
From the previous module we asked a pretty bad question friction good or friction evil. Could you know a better question to ask when I can increase the friction I want to and when I don’t want to. So you think about that where you want more friction we’ll first take about that. Where you want more friction say in a shoe when you want to climb a mountain you want in a shoe that wants grip and what about tyre you want a tyre which has more grip now if you notice what are the ways of achieving this is by putting one of these called threading where you put those lines and give those groves they gives you more grip. How exactly do those help you in getting you grip? Now if you going on the surface which is soft as it is call it. then these threads give you a lot more grip as they sink into that surface what effect is this of the first three causes we read abition, flowing effect and roughness. Flowing effect because surface is very soft when you push into it you get more friction. If you are really keen you will have a question which is having you watched F1 tyre in a car doesn’t have these threads at al but they go on so fast they cannot afford to skip. So how can they not afford to have these threads as they supports friction? Then how these F1 car do not have them. That is the question I am challenging you with, think about it for a minute after which we can discuss it together. So now when you have thought about it how can a car which goes so fast even though it does not have threads on it. Well the surprised answer is those threads don’t help much when you are on solid road because look at it on something like clay those threads are gonna sink into the clay but if you take on something like road. It only reduces the surface area. If you look at it there are parts of tyre touching the road but the parts which ate in the air because there are those gaps. Now later on you will learn friction does not depend on surface area in principle like an Idea does not but in most part it does depend on surface area. If reduce the surface area threads reduces the surface area then what do you know, that friction should also have reduced. So the truth is in most bikes and cars that you see mostly he bikes you see out here you see threads they actually reduce the friction then why are they there. What is the point of those threads when they reduce friction especially on hard roads? The point is they help remove water in case there is a wet road. So in the normal road you cannot predict whether it’s going to be a wet one here or dry you cannot change your tyre according to weather. So you have to see there is trade of wet day and dry day. So If you have a wet day then those stretch really become handy because water gets trap between them and really gets thrown out, much better than slipping on the surface of water. If it is F1 car and if it is raining they won’t use that because when it is raining he won’t use that car but if it is a dry road then getting more arrears better and the interesting things here is that F1 car use a very different rubber they use a soft rubber whereas ours uses a hard rubber. This any normal bike you see on the road uses hard rubber and it has those threads so that water is thrown out because they can’t know when it gonna rain. So F1 style use which is called soft rubber which kind of get hot. Which is why they use trail run or it is called burn out run. So if they do burn out run so tyre gets pretty hot or they even start meandering on the roads so there tyres get hot and then the rubber becomes sticky. If you ever get a opportunity to go and touch these F1 tyre after a race you will see they are extremely sticky. The rubber is very soft so it starts becoming sticky because of huge amount of friction even without any threading.