Mostly for discussion purposes, as I'm showing up without wheel speed data. I don't have a sensor yet for the driveshaft but it is on the short list.

Toward the end of the season I have been turning up the boost on my rear engine dragster. But all season at low 5.50's there is a tickle of tire shake. Not severe. The faster we go, the worse it gets. And track conditions yesterday were not ideal, with other dragsters also shaking in the 5.50's.
But the question is: How do you combat marginal track conditions tire shake wise other than simply killing power all together?

The things I have tried are pulling timing early.....wasn't very effective and maybe counter productive. Also have been from 5.5 psi and 6.3 psi. Low tire pressure seemed to be worse consistently.

Yesterday on a little bubba I was able to go 4.40 with 1.02 60', with tire shake at least out to 200'.

I am very soft on shock settings.

i was .97 60s this week no shake. Hoosier tire 4.8 air. I cant remember are you hard tail..need more details

quote:

Originally posted by rusty:
i was .97 60s this week no shake. Hoosier tire 4.8 air. I cant remember are you hard tail..need more details

Four link
What tore?
What details you want?

While whole different animal. With our alky cars only way we could get around tire shake was kill power or throw more at it. Throwing more at it was best for us. Question is always how much can you get buy with before too much. Tire shake comes from tire walking over it self or distorting in middle on tire hooking while trying to spin at same time. It just does not know what to do. If controlling timing and pulling some at hit I would add few degrees.

Again all of above is from tuning heads up blower cars so may not apply at all.

differential in one race, driver in the other, I am very mad with me.
your 4 link may need to be more aggressive for the bottom of track and mor wing for rest.ic near balancer would be my suggestion. Bottom bar down 1.5 and 10.5 down on top for ballpark