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RED setup

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masracingtd1167:

--- Quote from: ricardo1967 on April 22, 2014, 09:30:46 AM ---Doesn't the track surface treatment (VHT and such) play a big role here?

--- End quote ---
      Ricardo it makes a huge difference . A car like he is talking about should be around 1 flat or quicker in the 60 ft. If the track is not good you ar not going anywhere ! 

ricardo1967:
Thanks Bill and 773077.

I hate VHT...  >:(  Still have bad memories from my last test pass (my avatar). And that was on skinny (10.5" M/T M5), 10 years old slicks @ 10psi! Hate VHT... >:(

773077:
Ricardo, 10.5's 10 years young at 10 lbs. thats traction alright. having done that, when you go back to the track and the conditions are the same what are you going to do? Hey guy's help Ricardo out, landings from this altitude are not fun. My avaitar. Setup was 6.5 lbs of air, tires were Hoosier 12x33x15's on 12"wheels, launch rpm was 7500rpm. This was a test session with a new driver with a under power mule motor (307 ci, 650  hp), on a good track, good weather. In our case, one change at a time. We put 20 lbs of weight in the nose. Right or wrong ? Not enough power to turn the  tire? Next pass still pulled the front a bit but went down the track at 177 mph 7.76. 60' was junk. What else should we have done, anyone? you make the call? higher/lower rpm launch, more/less air pressure, more weight in the nose. car weight was 1565 lbs, weight, bias was 75.1/24.9%. Moving 20 lbs to the nose changed the bias to 74.8/25.2%. Anyone run the 10.5's or the 12x33 on a 14-16 wide wheel? what air pressure.

60' comment: definitely it should run sub 1.0's, the question is how to do it. the fast guys in the class are running 500 ci pro stock motors or 480 ci power in B/DA with 60' in the 1.02 range. There is a C/D that went .96 and a C/ED that runs consistent .99's in 60'. with the exception of the B/DA cars these cars are probbly within 40lbs and 100 hp of one another and they have done it on the 12x33x15 tire. One question is where is the transition between large and small ci power that allows you to give up .02-.04 on 60' using a bigger tire and pick it all up down track. comments anyone?

ricardo1967:

--- Quote from: 773077 on April 23, 2014, 05:44:39 AM ---...Hey guy's help Ricardo out, landings from this altitude are not fun...
--- End quote ---

Thanks 773077!

This forum has been very educational for me from day one. I am very thankful for that. I'm not quite ready to think on my next test pass yet, due to other priorities in life right now. But I sure hope to hit the track (Bean Blossom, IN) a couple times this season.

As for what I plan to change, installing the wheelie bars is one (it was in the trailer that day), as well replacing a cracked front wheel hub. I may add more weight on the front, but not too much more. When that time comes, I'll sure review my plans with this resourceful forum. Your experience below is a good guidance for me, thanks again.

masracingtd1167:
Ricardo A wheelie bar is a must have for your car ! The last thing you want to do is damage your car or much worse hurt yourself . That 10.5 tire is a m5 compound wich is way too soft for your car . A car like yours and mine also are just so light in the front it makes it more difficult to get it from a to b . My motor is only 36 inches out and if I built another car it would be 50 inches out .When a car goes straight up like that it is because the car dead hooked .A nice long flexible wheelie bar will help a lot . Bill   

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