Testing, Testing, Is this thing on?

I made a decision last points race @ Dragway 42 to change some things drastically to help my car hook when track conditions are sub par. 42 re paved earlier this year & though the track is wicked smooth there seems to be an issue that is not working in my favor. I have never had an issue this bad & I tried all the small things with high hopes.

Last night I went to Summit Motorsports Park for their $7 fun night. I went to this a few weeks ago to see if an earlier problem was cured. This is an awesome night for anyone who would like to try their hand @ some racing. Even just for the experience of driving down a track where just a week before the NHRA professionals were going over 300mph. Just bring the old family sedan or SUV or even your Prius, pay $7 @ the gate & make runs all night long. There are 5 trophy classes to choose from including High School to get the younger (future) crowd involved.

This trip to SMP was going to be rather interesting. Any time you try radical changes things get exciting. They may work great or horribly wrong. Exciting! What I was trying to accomplish was to slow the car down for the first 60′ or so of the track. Sounds easy? Slowing a car down is just as hard as making them faster. For consistency reasons you cant just ease into it. You have to leave full bore. To stay within class rules I had 2 options. One was to Retard the timing to make the launch slower. Advancing timing makes a car go faster to a certain point & retarding will do the opposite. My ignition box has a feature where when activated will pull a predetermined amount of timing. I went to the max 9.9 degrees. I’m thinking it should leave like a mutt. 1st hit it goes a 1.44 6o’. that’s pretty much where it left off. A little disappointed but sometimes the electronic retards don’t seem to activate.  It was time for option 2. This was more of a mechanical approach. I normally shift the car @ 6500 rpm for optimum speed & consistency. This time I would try to make the car shift just after the staging beams so it would not affect my reaction times. I checked to see how many rpm it would take to shift just off the line, not too soon & not too late. The converter flashed to about 5200 rpm so I pit a 5800 rpm shift chip. That was way too high. Another 1.44 60′. It shifted after the 60′. Not where my problem was. My next & final pass I dropped the shift rpm down to 5200. Right where the converter locks up. Perfect! it shifted just after the stage beams. .007 reaction. The 60′ slowed to 1.76. It was good off the line, shifted perfect & it turned into the mutt I was looking for.

 

 

This weekend brings Kids Night @ SMP. This is a huge event to bring all the kids to. It keeps the whole family involved. There are games, give aways, & even race car fun rides for the kids. If you want to introduce the family to racing this would be the night to do it. After a long night @ SMP I will be back @ Dragway 42 to test out my new secret weapon. LOL. As always you are more than welcome to come & see us.

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