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rchase last won the day on July 19 2018

rchase had the most liked content!

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About rchase

  • Rank
    Cornering Master

Previous Fields

  • Have you attended a California Superbike School school?
    Yes. 1-4 BMP

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  • Gender
  • Location
    Atlanta GA
  • Interests
    Motorcycles, Trackdays, Classic Cars.

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  1. Been away for a looooong time but this thread caught my attention. I have done 2up rides and if you get the right rider who's mission is to teach rather than to scare it's an amazing experience. I found myself at the side of Roebling Road Raceway with such a rider and hopped on. After the ride and the scare (it's unavoidable) it had massive affects on my confidence on the bike. After the experience I wrote an article that appeared in BMW OTL Magazine about it. It's somewhere on the forum here but buried under years of other posts. The most important aspects of riding 2up is not
  2. So. Had a chance to see one of these in person. It's impossibly light and well balanced.
  3. Fun video. Had you waited a fraction of a second to get the bike completely upright that video would have been less interesting. The "yaw" that you got from the rear of the bike was likely because you were still leaned over a wee bit. When I'm intentionally "provoking" the rear tire to see where it breaks I usually wait until I'm fully upright. It gets me the info I want with less thrills involved.
  4. I'll be honest. I'm no expert. I'm just sharing my personal experience. Trust the experts rather than a random person like myself on the internet. Personally i use a longer line in the rain. It allows me to be more smooth and less abrupt with my control inputs. All of the lines and riding tricks like the hook turn and quick steer still work in a lower traction situation you just have to "dial it back" a bit and not be aggressive with them. Ultimately you need to ride both lines and see which one is faster for you and which one gives you the most confidence. The key to riding in the
  5. A couple of other things to be cautious about. 1. Puddles. Not only because of the hydroplaning potential. Hit one at speed and all the water in the puddle nearly instantaneously will soak you and add lots of weight to you. 2. Tar snakes and patches. Not all traction is created equal. Tar snakes will cause a lot more traction issues when they are wet. Some patched areas have more or less traction than the main part of the track. 3. Visibility. Visor fogging (easily fixed), Mist from other bikes, fog and rain on your visor can reduce visibility. Use a clear shield at
  6. Personally I love riding in the rain. Less traffic and at the end of the day it's like having your own private track when everyone packs up and leaves early. When other riders are angry and horrified about the R word I'm thinking "heck yea"! Some of the things that change in my riding in the rain. 1. Braking. Earlier, lighter, longer. Stretch out the braking zone and leave yourself a buffer just in case. 2. Lean angle. Less is more. You stay on the fatter part of the tire and maintain more traction. Hang WAY off the bike to reduce lean angle. The more you hang off ev
  7. As in the videos. Setting sag allows the bike to stay within the "sweet spot" of the springs motion. This prevents the shock from bottoming out or topping out during the regular conditions of riding. Many riders will adjust the sag to be more in the front and less in the back to help the bike "turn in" better in high speed cornering situations. Preload only sets the amount that the spring is loaded and is not really intended to affect stiffness. Even though it "kinda" does when you compress the spring enough but you risk bottoming out the suspension (and crashing) if you run out of spring
  8. Even some 2 wheeled motorcycles are not always suited for track use. I'm involved with facilitating some track days at a local track that's very tight and technical. For safety reasons we often won't allow certain large and unsuitable bikes. I have had to deliver some bad news to people riding Hayabusa's with extended swingarms and lots of other bikes that would be too much of a safety issue for the rider themselves and others on the track. Many of these would be fine on a less technical track. The school rents some really nice bikes. Reserve one of those instead. Another proble
  9. Very good question Hotfoot. Well my "educated guess" would be for a wider surface area on the contact patch. Big powerful bikes put out lots of torque in order to propel them forward at speeds that make us grin so wide in our helmets while we are on the gas. Without a larger contact patch the torque would quickly overwhelm the contact patch of the rear tire and the torque would not be able to be transmitted to the ground to propel the bike forwards.
  10. Someone gets it. Form follows function. Ride a heavier sportbike "dirt bike" style and you probably have a good chance of getting hurt when the physics don't work quite the way you want them to.
  11. There were two types of bikes in that video. Standard Supersports (GSXR 600's) and some super light weight bikes. It's fun to compare bikes like these but people tend to forget one simple thing. Balance. You can have simply awesome corner speed if you stick some super sticky tires on a bicycle (or a motorcycle that resembles one) but you give up one thing for that corner speed. Power. If you want a powerful engine it's going to weigh a good bit and you sacrifice your corner speed as a result. You can have all the power in the world by putting a 500hp engine on a bike but
  12. At the end of the day it's about results. Did the bike turn at the speed you wanted without going wide? Did you reduce the amount of bike lean angle? If you can say yes to questions like those all other concerns are secondary. Form follows function.
  13. Great photos. What can hanging off do? It can reduce the amount of lean angle. Look at the bike's angle. Back in 2015 one of my photos from the photographers drove that point home to me. I'm hanging off and obviously not really hauling butt through the corner but the bike is turning at track speeds with very little lean angle. All I have to say is track side photographers are some brave folks. If I had this in my viewfinder with the knowledge that the rider was still learning I might be tempted to RUN!
  14. Body position is form vs function and accomplishes one thing really. It reduces lean angle which in turn puts you on the best part of the contact patch to maximize traction. Even on the street a reduction of lean angle can be helpful in certain situations. It can put you on the best part of the contact patch on tires that may be questionably warm especially around the edges. While a lot of street riders "hang off" just to be cool others use it to maximize traction and to give themselves an extra margin of safety. There's lots of opinions about perfect body position. The harsh r
  15. Quick turn throttles have an advantage if they fit your use case. They reduce the amount of rotation the throttle requires to get to wide open. They of course have their place depending on what you want to do and the stock throttle your bike has. If you are racing not having to re-position your hand while opening the throttle is an advantage and saves you some effort. Would I want this on my 200+hp S1000RR track bike? Heck No! I'm more than happy to re-position my hand if I have to just to have some extra travel to manage the power. My bike has the BMW HP ECU as well and I swear the
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