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Dylan Code

Superbike School Riding Coach
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Dylan Code last won the day on January 29 2021

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  • Have you attended a California Superbike School school?
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  1. The no brakes exercise is merely there to help the rider sharpen and develop their sense of speed, once the first two sessions are done with no brakes, we WANT the rider to use the brakes in the corners where slowing is necessary. Yes some riders have trouble over-slowing so some options in that instance are: apply less pressure at the braking point, or perhaps move the braking marker further into the turn (which can be scary sometimes). Trailing the brakes gives the rider the luxury of extending the braking zone further into the turn and gives an opportunity to adjust the speed to precisely what the rider was intending. There are other uses for trailing but that's one important aspect. Some public roads have long series of corners that are all about the same speed, therefore not requiring much braking. But when slowing is needed, go to the brakes even if lightly. You'll have the lever in your hand in case something suddenly appears you need to brake for as well.
  2. Heat cycles don't seem to affect Q4's. Just ride until they wear out. Heat cycles minimally affect any tires per the Dunlop race tech.
  3. The best person to ask would be the Dunlop race tire distributor at your track day. Other than that I would start off with 32 PSI front and 30 rear. The Dunlop tire engineer who designed the Q4 said that they are less sensitive to pressure than other tires like slicks. He's the one who gave me those psi figures.
  4. We used Silkolene, a very good brand as well. No we do not provide engine wear data to manufacturers, it's never really an issue. Modern engines are good.
  5. Indians don't care about being passed. It was never a problem in India where we do schools. Most people are just not used to having another motorcycle close to them. Many are rattled and with good reason, unless you know the person well, there's little prediction.
  6. Liqui Moly is now officially our lubricant sponsor. They are the spec brand used in all the Moto2 and Moto3 bikes in the World Championship. We will be running that same oil in our fleet. The helmet sponsor deal is not finalized, but it is a company many have never heard of that produces the most helmets in the world and manufactures helmets for many other brands you thought made their own.
  7. We are shooting for Barber, which is May 23-29. It's mostly booked up but there are about 10% seats available.
  8. Your collection of data and research shows you are barking up the right trees. Here's some more data regarding tires: Per the Dunlop engineers tires grip in 4 ways: 1) Adhesion--the temporary chemical bond between the tire and surface. 2) Keying--the tire deforming and filling in all the nooks and crannies of the asphalt or squishing into the depressions. 3) Abrasion--the tire tearing from itself or wearing away. 4) Hysteresis--the energy storage and return by the rubber and partial conversion to heat. The first two can be looked at as static properties and the last two dynamic properties in my opinion. I'm still learning on all this stuff and when talking to the tire engineers, they don't have all the answers either. Heck, aviation engineers still can't all agree on exactly how a plane flies through the air!
  9. Thanks very much. We have more on the way!
  10. Yes, the amount of lean and overall speed from wind resistance would matter a lot. Turn-in rate would matter I suppose but not significantly. Wind resistance going straight requires a certain amount of power just to maintain a particular speed. A hypothetical example is here: 30mph=1hp 60mph=8hp 120mph=60hp 180mph=190hp
  11. The answer to the question is: from turn-in, off throttle, not trailing the brakes, the bike will slow at the rate of between 3mph to 8mph/sec. Lots of variables of course but that's the quick answer.
  12. I remember this thread from long ago about friction. I've been going into tire grip and the elements affecting it for some time and had this recently pointed out to me: The laws of friction were cited with regard to tires. But there just one problem: those laws only apply to RIGID objects. Because a tire is not rigid, the law would not hold true.
  13. Coaches find that between sessions if they wait for their student to come around the track that their tires cool down enough to not provide sufficient grip. So in some cases they can lose their temperature within three or four minutes.
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