PATRICK B.

iTrader: (5)

Anymore specific testing going to be done on your end Jim?

I know it's hard to get test data when it's not your vehicle and driving especially in a race event

Indy Evo

iTrader: (41)

It's looking like Thursday for our next test date if the weather holds. I'd like to get at least a couple more outings on them before we pull the trigger, but the data gained to this point looks to be very positive.

PATRICK B.

iTrader: (5)

Good to hear thanks!

By the way did VWJeff have any specific comments about them at all

Indy Evo

iTrader: (41)

vwjeff said he would post as soon as he could.

Tom is on his way home and took plenty of notes on psi's and other observations. The Hoosier engineer took some high speed photos when we went to Muncie, and he spoke with Tom today. I will be talking with him later this week. I would expect something out of Tom tomorrow as he has driven 2700 miles, been to three tracks in two states, and left my house this morning for the long trip home.



I just finished going over the car and everything is good to go for testing later this week.

R/TErnie

iTrader: (32)

keep me on the list... I just put my transmission back together

evovin

iTrader: (64)

I still have high hopes on your next testing Indy.... 1.54-1.58 60ft......

9sec9

iTrader: (2)

Just as the engineer said, the tires will perform better with higher than our 'normal' racing psi's. On the first car, Streetthisevo, we started out at 27.5 psi. This was the same psi as we used on IndyEvo's car at Muncie. On short motorcycle slicks, the car has a best 60' of 1.52. On only the second pass, at 27.5 psi, the test Hoosiers went 1.57 on an early track. Launch was at 6700 rpms with 494 whp on the Mustang Dyno (Dyno Evo Stock Appearing Winner). The average 60's for this car are in the low 1.6's, with the BEST EVER being 1.52 on slicks. Then 4th gear broke and we scrambled to find another candidate to help us test. Thanks to Chris for being a true EvoM'er and testing these for the community.

vwjeff, Thanks for stepping up and allowing us to use your car for the continued tests. David made the suggestion and we were off and running on the swap. vwjeff has a fully built Buschur Racing Engine that makes 660+ whp. He hasn't driven in a year, so we weren't too sure what to expect. Jeff's previous best ever with a different turbo setup (smaller) was a 1.57 or 1.58 I believe. Jeff's first pass of the day was made on his Nitto 555R's, also 245/45-17's. His 60' was 1.68. That exact time ended up being his SLOWEST time on the Hoosiers. The new Hoosiers yielded Jeffs BEST 60's on this turbo setup. Jeff had 7 out of 8 runs between 1.60 to 1.68. The 2 step was probably a little high, but bigger turbos are difficult to keep consistent. Without posting everything that Jeff observed, I'll just say that his times were 'Bracket-Like' while posting his best 60'. His consistent comment after returning from the run was "These things are really smooth and stable down track." The mph was a little higher than his normal and the tracking was dead on. No moving left to right like a low pressure slick. Our best observed psi is 25-26 psi. Lower psi and the tires will cup. We tested 27.5, 27, 26, 25, 24 and 22R/21F. As we went down below 25, Jeff would comment that they weren't as stable as before, but still WAY better than the motorcycle slicks. In summation: Better high speed stability (expected due to higher psi and radial design), very consistent 60's (7of8 at 1.6-1.68) and slightly higher (probably 1-1.5 mph) trap speeds. As the tires continue to get scrubbed in, I think we're going to be well rewarded for our efforts.

Added: I forgot to mention that in comparing the Hoosiers to the MT Street II's, the Hoosiers weigh 20 lbs, the same basic size 245/40's in 18 weigh 25 lbs. 5 lbs is huge when it comes to tire weight. The 60's are just part of the equation, the other part is turning the extra 20 lbs down track.

Indy Evo

iTrader: (41)

12.008 pass from Muncie. This was on a soft shakedown pass at 27.6 tire psi. Plenty of bite! Photo by Matt Marlow

9sec9

iTrader: (2)

Here's the video of the 12.008 @ 116.58
http://www.youtube.com/watch?v=GfmCH36cP2U

evovin

iTrader: (64)

no burn out in all of your testing?(you didn't mention)

9sec9

iTrader: (2)

Light burn out by vwjeff, but he wasn't comfortable doing it, since that's not his norm.

Sharkbite2000

iTrader: (21)

Nice, can't wait to try these out, I've been looking for tires that hold the power.

9sec9

iTrader: (2)

We would like to see the tires scrubbed in and getting maximum bite before placing the final order. The tires have already proven themselves in several areas. Highspeed stabillity, consistency, weight reduction and cheaper than the competition. Just a bit more testing and we'll be there.

SloRice

iTrader: (8)

Just playing devil's advocate here. My car goes high 1.6x's all day long on a set of basically road race tires (Toyo R888's). Back when I had a tall sidewall all-season on the car, it would go low 1.6x's all day long. I then ran the motorcycle slicks last summer and my car was going 1.45-1.5 all day long.

I'm not seeing where these tires are showing an advantage. Chris and Jeff are both running about a tenth slower in the 60ft than they did on the motorcycle slicks.

I'm very interested is seeing these tires succeed, but what's the point if they can't perform as well as what's already out there.

9sec9

iTrader: (2)

The motorcycle slicks are not drag radials. Class requirements in some races. They're less stable and as I've said before, check the mph and the fact that the new drag radials are not 'worked in' yet. Many, many people would not use a motorcycle slick under any circumstances on their car. There's give and take in every choice. Safety as well as performance down track and ideal rpm range of the motor must be looked at too. We're not trying to compare a dot radial to a motorcyle slick. We're trying to create a more ideal size and compound for our stock wheels. By the way, Chris ran 1.52 on the motorcycle slicks and went 1.57 on the NEW (as in not broken in) dot drag radials. Jeff got his best 60's to date on his new turbo setup. Not too bad for a beginning.