Heavier RR spring for slick?!

[Dirtmod13]

So going through both of my manuals from the chassis builders ( warrior and rocket)Both say to raise rr spring from 225 to a 250 for more side bite. Wouldn't this loosen the car on the gas since rr is heavier than it would have been in a tacky track?

[Matt49]

So going through both of my manuals from the chassis builders ( warrior and rocket)Both say to raise rr spring from 225 to a 250 for more side bite. Wouldn't this loosen the car on the gas since rr is heavier than it would have been in a tacky track?

Stiffer RR will typically tighten off the gas handling and loosen on the gas handling. Works pretty well in heavy track conditions if you can also take some j-bar out to free up entry.

[Dirtmod13]

That's what I thought, but why would both builders say in their manuals to go heavier on rr for extreme slick conditions?

[MasterSbilt_Racer]

That's what I thought, but why would both builders say in their manuals to go heavier on rr for extreme slick conditions?

If you don't have enough sidebite on entry, your lap is already blown. The spring will give that to you. A drag race setup don't win many super slick races.

[jrkracing54]

If you don't have enough sidebite on entry, your lap is already blown. The spring will give that to you. A drag race setup don't win many super slick races.

MasterSbilt will you marry me? UGH, I mean be my crew chief? http://www.4m.net/images/smilies/tongue.png John 1*

[MasterSbilt_Racer]

I appreciate the thought, but I ain't the marrying kind! Lol

[TheJet-09]

In the slick, what are thoughts on taking angle out of the RR upper link and running a stiffer spring to compensate for the loss of indexing the RR birdcage during roll? It would take out a little roll steer (RR is not coming back as far) and could/would possibly provide a smoother suspension at the RR...maybe? Would also favor the LR more off the corner based on less drive angle at the RR?

[Dirtmod13]

I just ran both rights all the way down to bottom hole and softened rr and it was way tight on entry on the gas. Trying the heavier, maybe 250 might do it?...

[swartzman]

What track? That will come into play as well.. Maybe we can help even more on what some of the guys that are fast are running..

[3wheelinphotos]

A lot goes into RR spring selection on our cars....track and engine combo are huge. We go along with the same theory as the Masters fella said its going to create initial scotch on entry making the car tighter...it can hurt your exit so that's why we have guys make bar or shock adjustments first to help loose in the middle before making spring change from our std 225 rr spring

Give me a call sometime at the shop to help you adjust your car. Mike @ Warrior Race Cars & 1G Shock Service 865.573.2411

[TheJet-09]

Do you think angling the RR spring in at the top would help sidebite (roll rate) but not compromise getting off the corner (slightly softer ride rate)?

[25drtrkr]

Do you think angling the RR spring in at the top would help sidebite (roll rate) but not compromise getting off the corner (slightly softer ride rate)?

Yes, very common adj on the old Smack cars.

[95rayburn]

Does that work with all types of dirt late model rear suspension 4 bar z link swing arm giving it more side bite off throttle??

[Dirtmod13]

We ran a Bmod special this weekend and went from a 150 rr to a 175 and it was a lot better on entry. So then we went to a 200, even better. Was wishing we had a 225 to try. Went from. 200 to 225 last week in the late model and loved the way it could be driven into the corner

[swartzman]

It still depends on the track, we are running 275 and 300 on momentum banked tracks in the slick. But other places 225, 250..