June 26th - Points Event #4 Danville Airport

Gwen Habenicht · **Posted:** Tue Jun 28, 2011 8:23 pm

Ryan Holton wrote:

Yup, Jim has rubbed off on you :lol:

Well, while I'd take that as a compliment, I wouldn't say so, but I've learned a few things this year.....none of which I used apparently in Danville. Had too much fun seeing folks I hadn't seen since March, but that's another story.

Seriously, I've driven on more flipped or corded tires this year than you know. Actually, more than "I" knew about until after the fact. Going on the "what you don't know won't effect your driving" philosophy, I guess.

Why do you think we changed tires Sunday between our 3rd and 4th runs? Saved them to flip before they corded. All kidding aside, flipping them does give you a little extra life, but 86 runs on a set is A LOT!!!! I'd say flip them and see if they make it til the end of the season.

Les Davis · **Joined:** Fri Aug 29, 2003 2:04 pm **Posts:** 2059

No 86 runs isn't that bad especially when compared to some of the horror stories I've heard on here about tire life. Do you really think 3-4 more events are possible with a flip. The tires wear pretty evenly, I'm thinking cord all the way across is not far off even with a flip. I looked up the price for a brand new set on tire rack and nearly fainted, John B Tires has my sizes in stock right now, I think I'm gonna give that a shot.

jeremy gast · **Posted:** Wed Jun 29, 2011 12:08 pm

ya every car is good on race tires when it stays in the garage!

sorry had to.
[quote="Les Davis. That's a little disappointing as that was only about 86 runs on those tires. I guess Bernie's car isn't quite as easy on tires as mine, I think I have a good bit more camber. I'm really not looking forward to the expense of another set of tires as I've been spending money like mad recently.

[/quote]

Gwen Habenicht · **Posted:** Wed Jun 29, 2011 12:52 pm

Les Davis wrote:

No 86 runs isn't that bad especially when compared to some of the horror stories I've heard on here about tire life. Do you really think 3-4 more events are possible with a flip. The tires where pretty evenly, I'm thinking cord all the way across is not far off even with a flip. I looked up the price for a brand new set on tire rack and nearly fainted, John B Tires has my sizes in stock right now, I think I'm gonna give that a shot.

Les, I really don't know how many runs flipping them will give you. I just get in Jim's car and drive without worrying about it. He says they're fine and I believe him. Maybe they won't last the rest of the season, but ask Bernie about the July event because I don't think he'll be there. Even if they last only 8-16 more runs, that's still $$$ in the bank until a later date. That really wasn't much of a cord. How much contact patch would that part of the tire even get once flipped? Whatever it costs you to flip them, I'd think it would be worth finding out. What, maybe $40?

Les Davis · **Joined:** Fri Aug 29, 2003 2:04 pm **Posts:** 2059

jeremy gast wrote:

ya every car is good on race tires when it stays in the garage!

sorry had to.

Les Davis wrote:

That's a little disappointing as that was only about 86 runs on those tires. I guess Bernie's car isn't quite as easy on tires as mine, I think I have a good bit more camber. I'm really not looking forward to the expense of another set of tires as I've been spending money like mad recently.

Sounds like someone is volunteering to come help out. :wink:

jeremy gast · **Posted:** Wed Jun 29, 2011 4:04 pm

all you gotta do is call. i was hoping ot see it this weekend but oh well...

Les Davis wrote:

jeremy gast wrote:

ya every car is good on race tires when it stays in the garage!

sorry had to.

Les Davis wrote:

That's a little disappointing as that was only about 86 runs on those tires. I guess Bernie's car isn't quite as easy on tires as mine, I think I have a good bit more camber. I'm really not looking forward to the expense of another set of tires as I've been spending money like mad recently.

Sounds like someone is volunteering to come help out. :wink:

michaelsmiller · **Posted:** Wed Jun 29, 2011 11:02 pm

If I was to name last week’s AX, I would call it “Living Life on the Limiter”. I hit the limiter in the slalom and held it to the finish. That cost me dearly. I wanted to shift to third, but I was too afraid to let loose of the wheel. I probably saved myself from shifting into first and blowing something. A little break in the flow of a course is not a bad thing. It makes you mentally be able to make adjustments better as you gain experience. It’s the transitions that help separate the really good drivers from the rest. Like usual, I did not handle the turn around well. I noticed that there was a good variety of lines that people were taking. Some treated the entry almost like a pivot cone, others ran it more like an increasing radius turn. A lot of people just entered too fast and spent their time recovering from pushing wide. I don’t know which was the fastest, but I do know which was slowest.

DickRasmussen · **Posted:** Thu Jun 30, 2011 12:05 pm

michaelsmiller wrote:

If I was to name last week’s AX, I would call it “Living Life on the Limiter”. I hit the limiter in the slalom and held it to the finish. That cost me dearly. I wanted to shift to third, but I was too afraid to let loose of the wheel. I probably saved myself from shifting into first and blowing something. A little break in the flow of a course is not a bad thing. It makes you mentally be able to make adjustments better as you gain experience. It’s the transitions that help separate the really good drivers from the rest. Like usual, I did not handle the turn around well. I noticed that there was a good variety of lines that people were taking. Some treated the entry almost like a pivot cone, others ran it more like an increasing radius turn. A lot of people just entered too fast and spent their time recovering from pushing wide. I don’t know which was the fastest, but I do know which was slowest.

Sometimes "on the limiter" in a slalom, etc. is a good way to insure you are actually at that speed rather than short shift and not know if you actually accelerated to the limiter speed. Try the time/distance calculation sometime to see how little time you actually save over a couple hundred feet at even a 5 mph higher AVERAGE speed.

I did the pivot cone line before the far end sweeper more than the sweeper line but I also screwed up the entry at least once. When I process the DL1 data this weekend I "should" have a good feel for how much time I lost with the known screwed up run. The general idea is that time going perpendicular to the finish line is wasted time so you would have to "make up" that time compared to a tight line at the entrance (aka "pivot") and having to accelerate from a lower speed. However, you might be able to accelerate sooner and with more throttle since the line will be straighter. I was still "traction limited" at about 1.2 to 1.4 cornering g's if I recall correctly but still had to brake hard for the second cone (treating the cone on driver's right as the first cone even though it wasn't officially in the slalom).

Added comment: Time going away from the finish (or the next straight) is double wasted since you also have to "come back".

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June 26th - Points Event #4 Danville Airport

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