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Not fair! Don't we have a rule about CBP on a track within a few weeks of a race? We should. Even in bowling you can't practice on the pair you will be competing on the day of league play. I live over two hours from the nearest track we run on. I say again....not fair! Wait a minute, I guess that's why we call it CBP. I told ya I was gonna be trying to stay up with the Mitchster.
JJ
Dude if you show up in a couple of weeks, you're screwed... better be there in 6 days :shock:Quote:
Originally Posted by ShadowBolt
I will be there and my car has "legs"".Quote:
Originally Posted by David Love AI27
JJ
He can practice all he wants, but the CMC1 boys are gonna run him over.
Mitch, did you guys try bumping the pressures on the R888's as recommended by Toyo? Apparently the "Low" pressures most people I know use aren't supposed to work... :roll:
no Matt. i know Mitch said we dialed them in on Steve's car, but it was a lie. :roll:Quote:
Originally Posted by AI#97
Yes, we tried bumping the pressures.
Nor here
PM me the result por favor. I am compiling all my data I have located and wanted to know if you are seeing the same trend...are you using nitrogen?Quote:
Originally Posted by mitchntx
Glenn, go take your meds.
you first.Quote:
Originally Posted by AI#97
Wait a minute ... We spend $400 in fees, 30 gallons of gas, a whole Saturday, and a 1/2 set of tires and you just want me to give that data to you?
How about I wash your car too ...
I quit being Santa Claus when my daughters turned 10.
Don't we have a testing ban? I know I read about one somewhere.
JJ
move along, please
Jeez Mitch....you were on here giving out most of your data anyway filling us in on your test day....figured you would just let the CAT out of the bag anyway. If you didn't want us giving you shit about it...should have not posted anything.Quote:
Originally Posted by mitchntx
And yes, come on over and wash my car but please leave your bikini at home and bring overalls...I don't want ANY chance of seeing ass crack.
common knowledge
Trust me I have been....and it didn't cost me a dime to figure out where I am going to start with them. Plenty of people willing to give up the goods for free all over the net. I was just interested in YOUR tests as I don't have a lot of data points on CMC/2 cars running the 275. Most of the data I have found has been in MUCH lighter cars...I am guessing yours is close to 3250? I was just digging for more info on them getting slower after 10 or so laps with the added weight along with if you were starting at what appears to be the new norm of about 5 to 7lbs higher than the RA1...Quote:
Originally Posted by mitchntx
<yawn>
Actually, you can leave it dirty...if you could haul it to a dyno and get it dyno'd for me that would be great! ;)Quote:
Originally Posted by mitchntx
I am actually just happy it is track worthy as of 2pm today! Been a TON of little projects done on it over the last 3 months...most of which was party of neglect for the last 3.5 years. It is certainly a leaner and meaner racing machine now....only to have to re-figure it all out to deal with the R888's! :?
I should be pretty close on the new tire setup....but that is purely on paper. It will probably be like dogshit in actual application on track at TWS.
CAT FIGHT!!!!!!!!!
I just found out through the grapevine that Mitch and Steve were not the only CMC2 cars getting in a little CBP at MSRC. No matter, if the track stays dry I plan to motor by all three of them. If it's wet I will be the one holding down last place. First you gotta be smooth to be fast in the rain (and I'm not) and second all I have to run this weekend are thin (read blad) RA1's. But if it stays dry I pitty the Fools!
JJ
In car video from the #17 Mustang as he races the #8 Camaro and the #9 Firebird.
http://www.youtube.com/watch?v=oEAGCIqgB0k
That's the Firebird passing on the right.
I got to go learn some stuff this weekend as well thanks to the guys at Harris Hill Road.
http://vimeo.com/3544417
I confirmed that my car, in fact, is still a Camaro. And it was fun....
Very cool, that is the first time I have seen video of the track.
The elevation changes look pretty sweet! 8)
Looks like we need a private race weekend down there for AI/CMC! :lol:Quote:
Originally Posted by michaelmosty
Yes, you can tell the Firebird by studying the bodywork closely. This reference will help;Quote:
Originally Posted by mitchntx
http://jalopnik.com/5166238/the-pont...s-parts-with-a
:)
Hehe.
I noticed that too.
I rode in that damn thing a couple off years ago at a superbowl we covered.
jb
Working on a Test and Tune the Monday before TWS!Quote:
Originally Posted by AI#97
More to come later, its already on their calandar!!!
Sweet DD! I know there was some conversation to that effect, but didn't think something might come together so quick. Keep us up to date when you can.
To everyone else, it was a fun track, the drop off was cool and remined me of Laguna Seca a bit.
LOLQuote:
Originally Posted by Wirtz
On the subject of 888s ... we had not had the chance to test on them before racing on them this past weekend, so we can't offer any "back to back" testing data like Mitch's .. only more seat of the pants feedback, so here it is ...
Mason liked them on a wet track - very predictable.
In the dry, at first I hated them - they felt like street tires compared to shaved RA1s - probably because they ARE street tires with their big angled tread blocks - I drive a lot of cars on a lot of different tires and it took some time for me to adjust and learn to use these things effectively. By the end of the weekend, I hate them less ... pretty good for street tires ;)
It does seem like they need higher starting pressures than RA1s .. a few PSI, although we need to do some real testing before we can say this for sure. Likewise as to the question of whether they are slower than RA1s - gut feeling says yes - perhaps 1/2 a second a lap around MSRC in an AI car.
They are clearly a "stiffer" tire, which would account for many of the CMC/CMC2 guys finding they need to soften spring rates some to make them work - we probably don't need to alter our spring rates for AI, but we did need to make shock adjustments to compensate.
Despite being stiffer, they got up to working pressure faster than RA1s - I'm guessing this is due to the tread blocks walking around and creating more heat. They also clearly fall away significantly when they get too hot.
So we have a tire that gets hot quickly, works fairly well for a couple laps, then starts to fall away, but we can't run lower pressures to make them stay on the pace longer because although they are stiffer, lower pressures build heat faster due to sidewall movement and that compounds the heat buildup from the tread movement .. in other words, a street tire!
Having said all that, they remain drivable when hot, just slower - at least for a hard driven 20 minute race - who knows how they will hold up in a 40 minute race? Oh and it does look like they need to be heat cycled - the first dry session we drove on these stickered tires where we got any heat in them on Saturday, they really went away fast once they got up to temp - they were fine on Sunday.
I found that these tires do not like to be over driven .. start exceeding the slip angle, and they suck - they obviously get too hot - this is not what I would consider a desirable trait for CMC racing - you guys who are used to hanging it all out lap after lap on RA1s are gonna have to tidy it up, or you will be slower and chew through these 888s like they are going out of fashion.
Once we are all using them, comparing them to RA1s is a mute point - at least for the rest of this season - we have to learn to adapt and live with them. My feeling is that these "street tires" will add a dynamic that an AI team like Cooke/Melkowits with our discipline and testing oportunites can learn to adapt to and live with, but overall for NASA style club racing in general, this is a HUGE step in the wrong direction, and given that we think they are going to last half as long and they cost significantly more, doubling our tire bills in the current economic climate is not going to be acceptable or achievable to many drivers/teams.
Nice write up. I do see a lot of discussion coming about the 888 in the near future.
Excellent info Darron. I agree with you. I bumped up my 888s pressure more again this weekend and found they did not fall off as much over the course of a session as they were doing last time at Houston.
R4, car 5, Fast lap #11 of 11 @ 1:25.667Quote:
Originally Posted by Al Fernandez
SHHHHH!! I'm embarrassed enough that I'm still slower than the real men in CMC without you broadcasting it all over the place!! :lol:
The real men in CMC were on RA1's.Quote:
Originally Posted by Al Fernandez
Should be fun next event when everyone is on 888's. :D For those that haven't wondered into that territory yet, it's going to be fun watching the expressions when see the time sheets and are 1-2sec slower 8) 8)Quote:
Originally Posted by Rob Liebbe
<I haz tissue ready to pass out>
Time to run AIX on Hoosiers. :lol:
So on the subject of R888s, I heard speculation on two different dates for when R888s are required, and neither of those matched what I thought was the rule (that being RA1s = ok for the first two events). I tried a quick search on NASA Forums and on the main NASA page and didn't see what I was looking for. So, can some link the offical ruling?
Edit: this is what I find still on the NASA site.
http://www.nasaproracing.com/news/20...tire-r888.html
if you want the regional answer, call Al, or me on my cell.
214-869-9603
Why don't you just post a regional answer??