My WSIR "slow" excuse :)

[MikeD]

No I do not mind doing it in 8 but I think you are confusing my dislike for WSIR as a track that requires skill versus balls.

Yeah, I see what you are saying. I think both types are fun in their respetive ways.

[MikeD]

Mike, you might have trouble with Ethan now that he has a G2X. He found out that he had some engine issues that he could not pin point but now he can see it with the data. Watch out!

Yeah, as if he was easy to beat before. Damned 2.7 lightweight p-o-c. Makes my 3.2L look like a complete waste of money .

[Mike]

I'd be willing to bet that it's not just Boxsters that are flat from turn-in on 5 to the braking zone for 9. Jack M., Mike G., Kevin R., and Bill B. specifically some to mind. Sounds like a new goal to set for yourself John .

Sheeser JP scores TTOD in AR1 and the next day we all find where he might have something to gain?
Not sure this is in my best interest.

[JHPGT3]

So Kary, when are you going to post the results?

[Brad Roberts]

Started a fire and I missed most of the heat

I could not consistantly run 125 into turn 8. The 710's suck on the track. They were good for 2-3 laps then fell off big time (which I was aware of) I do not have data acq in the car *yet*, all I was honestly doing was watching the digital speedo. I'm sure it is off, but not by more than 2-3 mph. I also watched Chris Benbow enter turn 8 at 125 in his GT3 and do 145mph into turn 1.

Good information from everyone!.


B

[JHPGT3]

I also watched Chris Benbow enter turn 8 at 125 in his GT3
B

FWIW, Chris told me he ran off the track in #8 at 130 in the GT3. (I saw him later near the restrooms.) Fortunately, both he and his car were not hurt.

[pdy]

I also watched Chris Benbow enter turn 8 at 125 in his GT3
B

FWIW, Chris told me he ran off the track in #8 at 130 in the GT3. (I saw him later near the restrooms.)

Obviously cleaning up...

[kary]

So Kary, when are you going to post the results?

I do not know who has them but if I get them I will post them.....I am going out of town for the next week and a half tomorrow afternoon so now would be good!

[Red Rooster]

hmmmm... must be technical difficulties....?

[kary]

Kary, can you post a GPS generated track map that shows where you are placing your sector markers? Thanks.

Here is another screen shot with track map comparing both my time trial laps. It appears there is someting wrong with the results or my data acq because the PCA results say I ran the exact same lap time of 1:31.61 twice which is not what the data acq says. It says 1:31.614 and 1:31.539.

Low Res:
http://www.group9motorsports.com/pics/W ... are_tt.bmp

High Res:
http://www.group9motorsports.com/pics/W ... res_tt.bmp

[ttweed]

The 710's suck on the track. They were good for 2-3 laps then fell off big time

I remember the Kumho engineer at our tech session saying that the V710 is a very soft compound and needs careful management under race conditions, involving smooth driving at optimum slip angles. They can easily overheat if the car is driven agressively for too long with a lot of sliding in the corners, etc. It appears from the blistering that you experienced and the way they "went away" that maybe that is what happened? I know it was a cold weekend up there, but did you take any tire temps?

It may be that the V710 just doesn't work well with an aggressive driving style on the big track. I think many amateur racers did well at the SCCA runoffs at Mid-Ohio this year with the V710s in the 20-lap sprint races, but where they really dominated was in Solo2, running one lap at a time. The soft compound may not be as suitable for some people on the big tracks, especially in hot weather.

I'm just guessing here, I haven't run them in continuous lapping yet myself, but I'm interested in hearing/learning more about your experience (and JHP's and MG's) with them.

TT

[JHPGT3]

The 710's suck on the track. They were good for 2-3 laps then fell off big time

I remember the Kumho engineer at our tech session saying that the V710 is a very soft compound and needs careful management under race conditions, involving smooth driving at optimum slip angles. They can easily overheat if the car is driven agressively for too long with a lot of sliding in the corners, etc. It appears from the blistering that you experienced and the way they "went away" that maybe that is what happened? I know it was a cold weekend up there, but did you take any tire temps?

It may be that the V710 just doesn't work well with an aggressive driving style on the big track. I think many amateur racers did well at the SCCA runoffs at Mid-Ohio this year with the V710s in the 20-lap sprint races, but where they really dominated was in Solo2, running one lap at a time. The soft compound may not be as suitable for some people on the big tracks, especially in hot weather.

I'm just guessing here, I haven't run them in continuous lapping yet myself, but I'm interested in hearing/learning more about your experience (and JHP's and MG's) with them.

TT

My problem with Kumhos is not lack of grip. It's all about "feel" and what I've been used to. I've been running Hoosiers for the most part, and now, Yokos. They have a much stiffer "feel" and squared shoulder. By comparison the Kumhos are much softer and have this nice round shoulder that Kumho afficianados (sp?) love. Because of the design, the Kumhos give more advance notice when the tire loses grip. I just couldn't get used to the softer feel after all the Hoosiers and Yokos. Someone more technical than I can weigh in on the differences in sidewall construction etc. to explain this difference in "feel". But, for me, that's what it's all about. The grip is excellent. I have no experience with longevity because I only used the Kumhos for 3 heat cycles (they appear unused after 3 heat cycles).

[Brad Roberts]

I clearly over cooked them. Mid Ohio has a nice balance of left and right hand turns with lots and lots of elevation change. It doesnt even come close to beating on the tires like WSIR. My previous tire experience with both WSIR and Mid Ohio is with Michelin and Yokohama slicks on a GT3RSR. I screwed up the 710's. I personally believe I could have saved them with a little more care, but I also dont want to "babysit" them. My lap times proved what the SCCA folks have found: they work really well for AutoX. I'll leave them to AutoX.


B

[glenn_993]

I'd like to know what type of tires the TTOD guys were running. Or is that a trade secret?

[lowyder993s]

I'd like to know what type of tires the TTOD guys were running. Or is that a trade secret?

Those Bastige's were running green slicks