My first experience at the 2008 Silver State Classic Challenge
09-24-2008, 02:10 AM
#16
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Back when I owned a Lincoln Mark VIII there was a local guy who ran one in the SSCC and Pony Express on a regular basis and I always thought it sounded like a great time and wanted to give it a try.
Your write up has me seriously considering it again and somehow, the OB seems a little more appropriate for the task.
I may have to finally get off my lazy *** and get this done. A year should be enough notice to get the bugs worked out of the car and to have it ready to pass tech. Always assuming of course that it doesn't bankrupt me first!
________________
Stephen
78, 5 speed
Slowly coming back to life.
Your write up has me seriously considering it again and somehow, the OB seems a little more appropriate for the task.
I may have to finally get off my lazy *** and get this done. A year should be enough notice to get the bugs worked out of the car and to have it ready to pass tech. Always assuming of course that it doesn't bankrupt me first!
________________
Stephen
78, 5 speed
Slowly coming back to life.
09-24-2008, 01:23 PM
#17
Rennlist Member
expected is much less than .7 seconds. I lived the "expected" reaction time world in track. Its a accepted factor in the sprints of track and field where the timer using sight to start a stop watch will use .24 seconds vs "god" timing on a starting gun. But that also includes the error at the finish line for a visual matching of the watch to the runner as he crosses the tape. generally, they are a little late there too. The pure reaction time is under .2 seconds for an expected event.
Unexpected, might be an event like a car close in front of you misses a shift. can you let off and turn or brake to avoid?
Interesting stuff. all sorts of factors .
mk
Unexpected, might be an event like a car close in front of you misses a shift. can you let off and turn or brake to avoid?
Interesting stuff. all sorts of factors .
mk
Lifted from a article by a Marc Green on stopping distances ...." Reaction times are greatly affected by whether the driver is alert to the need to brake. I've found it useful to divide alertness into three classes:
Expected: the driver is alert and aware of the good possibility that braking will be necessary. This is the absolute best reaction time possible. The best estimate is 0.7 second. Of this, 0.5 is perception and 0.2 is movement, the time required to release the accelerator and to depress the brake pedal.
Unexpected: the driver detects a common road signal such as a brake from the car ahead or from a traffic signal. Reaction time is somewhat slower, about 1.25 seconds. This is due to the increase in perception time to over a second with movement time still about 0.2 second.
Surprise: the drive encounters a very unusual circumstance, such as a pedestrian or another car crossing the road in the near distance. There is extra time needed to interpret the event and to decide upon response. Reaction time depends to some extent on the distance to the obstacle and whether it is approaching from the side and is first seen in peripheral vision. The best estimate is 1.5 seconds for side incursions and perhaps a few tenths of a second faster for straight-ahead obstacles. Perception time is 1.2 seconds while movement time lengthens to 0.3 second.
The increased reaction time is due to several factors, including the need to interpret the novel situation and possibly to decide whether there is time to brake or whether steering is better response. Moreover, drivers encountering another vehicle or pedestrian that violates traffic regulations tend to hesitate, expecting the vehicle/pedestrian to eventually halt. Lastly, there can be response conflict that lengthens reaction time. For example, if a driver's only possible response requires steering into an oncoming traffic lane (to the left) there may be a hesitation. ..... " Point being that if the above times are accurate in a surprise situation it may take 1.5 seconds to react and move the foot to the brake..... assuming that is the correct response. That is nearly 450 feet , at 200 mph , before the car can even begin to slow down.
Expected: the driver is alert and aware of the good possibility that braking will be necessary. This is the absolute best reaction time possible. The best estimate is 0.7 second. Of this, 0.5 is perception and 0.2 is movement, the time required to release the accelerator and to depress the brake pedal.
Unexpected: the driver detects a common road signal such as a brake from the car ahead or from a traffic signal. Reaction time is somewhat slower, about 1.25 seconds. This is due to the increase in perception time to over a second with movement time still about 0.2 second.
Surprise: the drive encounters a very unusual circumstance, such as a pedestrian or another car crossing the road in the near distance. There is extra time needed to interpret the event and to decide upon response. Reaction time depends to some extent on the distance to the obstacle and whether it is approaching from the side and is first seen in peripheral vision. The best estimate is 1.5 seconds for side incursions and perhaps a few tenths of a second faster for straight-ahead obstacles. Perception time is 1.2 seconds while movement time lengthens to 0.3 second.
The increased reaction time is due to several factors, including the need to interpret the novel situation and possibly to decide whether there is time to brake or whether steering is better response. Moreover, drivers encountering another vehicle or pedestrian that violates traffic regulations tend to hesitate, expecting the vehicle/pedestrian to eventually halt. Lastly, there can be response conflict that lengthens reaction time. For example, if a driver's only possible response requires steering into an oncoming traffic lane (to the left) there may be a hesitation. ..... " Point being that if the above times are accurate in a surprise situation it may take 1.5 seconds to react and move the foot to the brake..... assuming that is the correct response. That is nearly 450 feet , at 200 mph , before the car can even begin to slow down.
09-24-2008, 08:32 PM
#20
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Congrats 
Good Job Joe 
Good Job Joe
09-25-2008, 04:59 PM
#25
Intermediate
Hi All,
Thank you for the kind words regarding our 3rd place finish at this year's Silver State Classic in Nevada. I have owned my 1989 928 S4 for ten years and have done some car shows and other events. The most fun I have with the car is running it in Open Road Racing events. As mentioned above, the car was really designed for this, Germany's Autobahn for example.
The car drives awesome, has plenty of power and handles the corners well even at very high speeds. It is very stable and recovers quickly if you get a bit out of line. There is a great deal of quality built into our cars and despite being 20 years old, it keeps up with newer rides and I always get a lot of complements.
I have ran the Silver State five times with varing degrees of success, mostly do to bad GPS equipment and course note issues. Are the mile markers and flags correct, etc. This year I was very fortunate to have Joe Privitelli as my navigator. He did an awesome job!! Very detail oriented, had a great attitude and really wanted to do his best and win. It is difficult to win a trophy at this event (good competition) and the fact that we did with him being a rookie, only speaks to his dedication and willingness to work hard. Thanks again Joe.
So, on that note if you are interested in running your car at these events speak with Joe or myself at the Sharktoberfest event this October, 928 International, Anaheim CA. We would be happy to answer your questions. Joe also has links to the event website at the end of his first post. It would be great to see other 928's there, not so many dime a dozen Corvettes.
Thanks and speed safely,
Jim
Thank you for the kind words regarding our 3rd place finish at this year's Silver State Classic in Nevada. I have owned my 1989 928 S4 for ten years and have done some car shows and other events. The most fun I have with the car is running it in Open Road Racing events. As mentioned above, the car was really designed for this, Germany's Autobahn for example.
The car drives awesome, has plenty of power and handles the corners well even at very high speeds. It is very stable and recovers quickly if you get a bit out of line. There is a great deal of quality built into our cars and despite being 20 years old, it keeps up with newer rides and I always get a lot of complements.
I have ran the Silver State five times with varing degrees of success, mostly do to bad GPS equipment and course note issues. Are the mile markers and flags correct, etc. This year I was very fortunate to have Joe Privitelli as my navigator. He did an awesome job!! Very detail oriented, had a great attitude and really wanted to do his best and win. It is difficult to win a trophy at this event (good competition) and the fact that we did with him being a rookie, only speaks to his dedication and willingness to work hard. Thanks again Joe.
So, on that note if you are interested in running your car at these events speak with Joe or myself at the Sharktoberfest event this October, 928 International, Anaheim CA. We would be happy to answer your questions. Joe also has links to the event website at the end of his first post. It would be great to see other 928's there, not so many dime a dozen Corvettes.
Thanks and speed safely,
Jim
Last edited by Jim Dawson; 09-25-2008 at 06:57 PM.
09-25-2008, 06:25 PM
#26
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Tim with only 198 Hp at the rear wheels I almost fall asleep when driving Big Willow with only 9 turns in 2.5 miles....spend too much time with the foot to the floor waiting for it to go faster ! Besides I need to drop a few pounds to get into that never used custom Simpson driving suit 
09-26-2008, 05:26 PM
#27
Race Director
Tim with only 198 Hp at the rear wheels I almost fall asleep when driving Big Willow with only 9 turns in 2.5 miles....spend too much time with the foot to the floor waiting for it to go faster ! Besides I need to drop a few pounds to get into that never used custom Simpson driving suit
Sounds like you need to add a bit of BOOST!!
