Spring length

[7uptruckracer]

The Asphalt right hand frame mount Jbar just seemed to make the car to ill on entry. We mostly stick to long bars with reverse rake and bumpstop on the Asphalt mods. They aren't really traveling the cars as much once it goes down it stays down. We suck the LR in laterally which helps free entry and middle and then also places more weight on the LR for exit and engage the bumpstop. Its alot easier to setup asphalt but your fighting for smaller gains it seems.

[7uptruckracer]

To kinda go along with the original post on this car it runs conventional coil springs. We run a 325 and a 275 in the front with bumpstops. You normally see 9.5" tall springs as the standard height but a spring that height and that soft you run out of travel and it coilbinds. So you go to a 5" x 11" or 13" tall spring in the front and reset it to the same ride height and you have more travel before it binds. It still has the same rate but to make that rate at that height it has different coil spacing between the coils and different diameter in some cases so you can travel it more before bind. Height makes no dynamic difference just moves your collar to a different spot.

[drtrkr244]

Just as an example, what did his software teach you that improved the car's handling characteristics?
I'm not trying to be argumentative but I will say this: You're asking for someone (in this case me) to prove his theories wrong. As the person proposing the "theories", the burden of proof is on HIM. BB has made a living on taking very simple concepts and putting a lot of words around it. Blend in a little "pit knowledge" from days gone by and you have yourself a real cutting edge race engineer. Not TRYING to cut him down but I am...his stuff is 5 years behind and recycled before it is even printed.

My success with his software was on conventional setups. I don't know if it applies to dual stage or bump setups. Im certainly not an engineer or computer guy, but I have worked on dirt cars for 20 plus years. I really would like a chassis builder or top tier team to test his theories and see if they apply. I do think that you need the front and rear suspensions to be working together instead of fighting each other. It seems to me that all the technology is applied to one end of the car most of the time. Now days , it seems everyone is working more on the front end, even Mark Bush, stated this in one of his tech articles. All I can say is that his software has helped my customers that are on conventional setups.