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F1 2020 rules change
Teams limited to only $175 million per year
things are tuff all over!
Teams limited to only $175 million per year
things are tuff all over!
Ranger Mike said:1meyra welcome
I assume you run paved tracks. Spindle height most common on super lates is 7.75 inch. It has lower Roll center which means less camber change through spring compression. Spindle kingpin inclination can be between 5 and 10 degrees. Five years ago 8 1/2 degrees was
I read a ton of great info from Ranger Mike and others on what too look at.Jtcox3000 said:LogicIndustries thank you for your response. We did limit the LR hike more, increased RR top rod angle, stiffened up RF and RR spring and problem continued. As the track dries out and gets slick, we lower RR top rod and the car gets extremely loose on throttle center out. Believe it or not, the car actually turns in well, but very difficult to drive in traffic. So, moving RC further left wouldn’t correct the problem?
Ranger Mike said:Thanks for the kind words, JT
What size ARB (sway bar)??
Can you tell me the basics…??
% rear weight
% left side weight
% cross weight?
Roll Center height and offset in front
In back?
I assume you have 4 link rear set up
What top and bottom rod settings on both sides?
How much rear roll steer are you running?
Now tell me the tire temperatures inside middle and outside each tire on each corner
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@donlift19 -- Check out Autosport Labs. They have a very economical open source daq system. I picked one up a few years back for around $500. It has about everything you will need minus the sensors. I used it on a dirt late model.dontlift19 said:Might not be the right place to ask this, but maybe ya'll could point me in the right direction. I'm trying to put together a budget data acquisition system to use on my dirt race car. For now I'm just going to log the travel at the front wheels and g force with a 3-axis accelerometer. But I'm a little confused as to where to place the accelerometer in the car. From the looking I've done, some just place it wherever is convenient, and others say that it has to be as close to the center of gravity as possible, but they don't explain why. I've even seen some people use 2 accelerometers, one in the front and back, to see which end of the car is gripping better. Intuition is telling me the center of the car, but that's going to take a little fabrication as there's no good place to mount the accelerometer in the middle of the car. The other problem I'm foreseeing is that dirt cars produce so much roll angle in the turns that axes of the accelerometer will no longer be pointing laterally and longitudinally. So the readings I get won't be true lateral and longitudinal g force. I haven't seen this talked about anywhere, but it seems to me you'd have to come up with some way to measure the angle of the car in the turns (with a gyroscope maybe?), then use some trig to combine the correct components of the acceleration vectors to get a true reading. Let me know what ya'll think, thanks!
Jtcox3000 said:View attachment 257102
Ranger Mike, I’m at a loss on how to get the left front down. This is a new car, moved roll center left, raised motor up 1/2” and to the left 1”.
Congrats.Jtcox3000 said:Man what a difference a year makes! Hey Guys, just wanted to thank you for the input you gave me on our dirt mod that was lifting the left front Really bad! We went from a mid pack race car to now winning our 7th race of the year. We won 2 track championships and a Sunoco summer series event this year alone. Couldn’t have done it without you guys and this awesome forum! And yes this is the same car!
View attachment 270274
Jtcox3000 said:Ranger Mike, logicindustries you guys are the best! Couldn’t have done it without you both. So thankful for this forum, the information is here! just got to read it, understand it and apply it! Felt like a real dummy asking for help but now I’m so glad I did!