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Yes which is why in my above post i've said "indian bikes apart from the R15". The R15 runs a very aggressive V profile tire which actually gives it more contact patch while leaning than while travelling in a straight line. All other indian bike tires work the other way round with more contact patch avaiable for straighline riding and less as the bike leans. If you remove the R15 tire from the wheel you would be hard pressed to find the difference between the R15 tire and a FZ16 tire, the R15 tire will look as wide as a 140 section tire. Once on the rim it looks thin simply because that width is then used to form a pretty agressive profile. -
If I may ask you, Killer, coming just to contact patch, even though the 220 and 200 has a wider tire, while leaning the R15 tire would have a greater contact patch than the tires on the these two. Of course, there is no doubt that the chassis geometry, weight, stickier tire compound, revvier engine are major factors that contributes to the R15 being much faster on the track, but just the isolating the contact patch between these two while leaning, would you think the patch on the R15 tires is equal to if not more on the pulsars' tires?Originally posted by Killer View Post
I say this because I actually feel that the R15 tire actually has a greater contact patch than these two at a certain angle, which helps it corner alot faster than the pulsars, besides the factors above.Leave a comment:
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I'd like to add something here. While what old fox said is true, at the limits of lean you are always going to run out of tire contact patch and that WILL become an issue. So you have to take both the forces acting on the bike / tire as well as the contact patch into consideration. For example even on the superbikes with race profile tires, we are running past the shoulder of the tire and basically rounding it off. Thats how far we carry the lean and at that angle you're riding on VERY little tire. Ofcourse none of this is one the road. On an indian bike (apart from the R15) tire profiles are designed to provide the most contact patch while riding in a straight line and as you lean the bike you will run out of contact patch much sooner.Last edited by Killer; 01-07-2009, 11:25 AM.Leave a comment:
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If you look at most of the race tracks only the "high" speed corners have a banking (or camberingOriginally posted by Joel View Post
).Maybe its because they want the rider/driver to do most of the work and not the banking angle to help you out.
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The race track at Chennai does not have banking angles. Its pure flat surface. Banking is on public roads normally. Unless its a NASCAR or Indycar race track.Leave a comment:
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@ Pranay : I think the banking of roads is referred to as cambering
I quote from : Camber - Wikipedia, the free encyclopedia
"In road construction, the convex curvature of a road surface, see cant (road/rail)"Leave a comment:
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@OldFox
Sir, thanks for the explanation there. This thread is helping me point by point in improving my cornering abilities but I am shit scared when I see sand even in middle of a corner.... expecting the roads to throw a surprise any where!
Well, I have one thing to ask you -
What are these modern tyres??? I know that the tires on R15 are sure the type you are speaking of... (tyre + the way it is mounted on a smaller rim to give contact patch when leaning). But, how far are the tyres used in other bikes we have here (that most of us ride) come under this category?Originally posted by Old Fox View Post
Is it enough that a tyre has the same pattern on both the sides from the center to be called a symmetrical design?
To me, most (not sure of all) of the MRF Zapper series tyres seem to be of symmetrical design. Am I right?Last edited by HydBiker; 01-06-2009, 04:59 PM.Leave a comment:
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...And what we studied in 9th class still applies now.Originally posted by niks_devil666 View PostPranay : I believe most of us have solved various physics numericals on leaning and road banking in 9th class
And thats what we are basically discussing.
Yes, but not in most places they should be. Its getting better though.Originally posted by niks_devil666 View Post
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Pranay : I believe most of us have solved various physics numericals on leaning and road banking in 9th class
And by the way "banking" of roads exists in India too.Leave a comment:
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Sagar, What I would recommend is that you start noticing your speed at a particular corner(ask your friend for reference) with various techniques that we have discussed, with each experience you will get faster
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Originally posted by SAGARR_46 View PostHi Oldfox,
Okay now even I am a little bit confused So if I understand you correctly, it is the tangential forces rather than the reducing contact patch of the tire of your leaning bike that reduce traction at a given corner and hanging off the bike in turn helps you counter these forces. Please correct me if I am wrong and help me get this right.Leave a comment:
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Woh Joke tha bhaiOriginally posted by SagarAlso in my opinion more contact does not reduce speed when you are leaning a fair bit.Originally posted by TechnoBtw more contact also means more friction & hence less speed
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