oldkawboy
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posted November 26, 2010 08:35 PM
Keith & company have improved the shutdown at Maxton in the last few years. Don't know if you've been back in the last 10 years Doug but it was nasty back then. The long shutdown had you going thru a sand wash trail back to the pavement on the return road.
I warped a good set of rotors in the early days using the first shutdown which is doable at the speeds I was running ( a tad over 200 ) and guys with brake upgrades that didn't mind using them could use the first exit at much higher speeds.
Last month I ran close to 200 and just chose to use the long shutdown since it's been re-done, I rolled off the throttle and coasted to the end not using my brakes at all but you have to pay attention because the curve comes up quickly.
I'd say Wild Bill and the other really fast folks just about have to flat track thru the turn.
When Chad ran 222 on DaveO's bike he said he made the curve okay but it was alot different than at 200 but he took baby steps riding bikes in the 215 range before jumping on Dave's bike.
Dan
  
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Stuart Racing
Zone Head
N.H.R.A . Dragracing.
Posts: 999
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posted November 27, 2010 06:53 AM
quote:
It is steady increasing pressure, I dont go anywhere near that fast so at Mojave or Loring I dont even have to use the brakes. At Texas that all changes. I roll out of the throttle and then get on the brakes steady but aggressive, I would imagine Bill is very aggressive. Shut down is probably the most dangerous part of standing mile racing. This is just my opinion and I am about as far from being a seasoned racer as you can get. I still dont think I would want to sit on the sidelines with a pink purse. I dont know if I will ever find out what is too fast but I know I havent come close to it yet. I know at 185mph I dont even know fast. I am positive Bill knows fast on an intimate level. I cant stop watching that video. It makes me smile and wish March would hurry up.
Thanks Brenda,that gives me a good idea at what it takes.....
LOL,I`m sure your aren`t ready for the pink purse thing yet either.....
Paul....
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Life in the Fast Lane..........
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Stuart Racing
Zone Head
N.H.R.A . Dragracing.
Posts: 999
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posted November 27, 2010 06:59 AM
quote:
Depends on the distance. At Texas you don't waste any time and just squeeze as hard as you can without locking the wheel, -no time for "pumping". I think most of us are sitting up by 160 or so, and you are downshifting of course. There is a dip and some pretty good bumps at Texas and you have to relax a bit over those (you can see them on the tape). The most important thing is not to waste any time getting on the brakes. Bill was going better than 400ft per second. (1.3 "football fields" a second) and you only have 2200 ft before you run out of pavement. The slower you are going the more "room" you have, so those first few seconds are critical to the overall stopping distance. On The Salt there's so much room to stop that you just roll off and ease up into the air for aero braking and make a big turn off. Some times you don't need any brakes at all. I don't know how Maxton is nowdays..... But somebody will chime in. Loring and Mojave have plenty of room to slow down.
Doug,
I know in dragracing we use the aero broking quit often as those brakes on some bikes are a little on the small side....So sitting up in the air as soon as it is safe to do so is the best....You sorta have to have a good reaction time in braking too, even at a short drag strip to get slowed down in time for a turn off.... Are Carbon Fiber pads usefull in LSR runs???
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Life in the Fast Lane..........
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Shane661
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Posts: 11494
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posted November 27, 2010 07:56 AM
The typical problem in LSR is overbraking and tucking the front end. At the venues with a 1 mile shutdown area, it really requires very little braking to slow down from 200-210 mph, imo. In fact, as Dan has mentioned, you really don't even need to get on the brakes for about 1/2 of a mile or so.
Shane
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LandspeedLarry
Expert Class
Posts: 234
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posted November 27, 2010 08:51 AM
Bill upgraded to radial calipers for the Texas meet. They were definately better. However 2500' of shutdown is not much for a 590# vehicle (plus rider) traveling over 400'/sec. Wanting all the speed he could get I imagine Bill did not cut the throttle until he was sure he was past the finish. Why risk "hanging a right" at 50 mph? With all the weight transferred to the front under braking and a bike designed to go straight Bill made the best planned choice. LSL
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Home of the World's Fastest Naturally Aspirated motorcycles.
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Shane661
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Posts: 11494
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posted November 27, 2010 09:01 AM
Larry, what do you think of an anti-lock braking system for such an application? It could also provide some extra safety for a little off-roading, if need be, as well. 
I am not too up on the state of motorcycle anti-lock systems, but it's a thought. I know that there are always purists who want full control, but are the systems advanced now to the point of outperforming 99.9% of the riders??
Shane
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dougmeyer
Needs a job
moderated
Posts: 2713
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posted November 27, 2010 10:28 AM
Yes Dan, I was last there in 2000 and I turned the rotors dark blue quickly and had to wrestle the bike around the corner on those mid 190 -199 runs. It was a new, and interesting, experience for sure. Also, if you'll remember from all those "can of worms" discussions on the topic a few years ago, I started around the corner on the taxiway grabbing second as soon as I could keep the wheel under it. Also the clocks were 66 feet further down from the existing (I think) finish...
Shane, I haven't ridden one of the latest "state of the art" anti-lock systems (BMW?) but I have to think that they'd be really good. Any system that is good enough for the end of a straightaway, trying to be first into the corner should be fine! The older ones (early BMW, Honda) NO way! Those systems scared the heck out of me.
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It's not that I think you're dumb, it's just that so much of what you know isn't true....
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LandspeedLarry
Expert Class
Posts: 234
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posted November 28, 2010 06:10 AM
Shane: I agree with Doug, the current systems on the BMW and Honda are very good from what I have read. I believe that very soon all sportbikes will be so equipped just as radial brakes became the standard. BMW also has traction control and that too will be in the software package. It will be hard to go past 200hp/liter on a streetbike so electronics is the next place to improve lap times. Touring bikes also will use such systems as the cost is easier to adsorb into the price. Great things ahead, can't wait. LSL
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Home of the World's Fastest Naturally Aspirated motorcycles.
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TRNorBRN6001
Needs a job
Posts: 2021
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posted November 29, 2010 02:35 PM
Awesome!!!!!
Yep, that's crazy fast to try and stop in such a short distance at Texas.
Maybe after the last space shuttle goes up this month, we might have some new venues open up with a little more runway to shut down on. Jay and Shannon did give up their road racing stuff and Mr. WildBill has been trying to talk them into doing more LSR stuff. Fingers Crossed!
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TFA 200MPH CLUB MEMBER!
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