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d3man
08-30-2013, 01:29 PM
Lightning chassis IMCA run on alky new to dirt this year I can get the car to turn good but loose to very loose middle off and just trying to help some! Specs 750rf 650lf 150rr 200 lr 58%rear to start-rear bars left up 24deg left low 2.5 right rear up is z-link level rt low 2.5 up rebound 3 in front shocks any suggestions?left rear hike up the angle goes up to 38 degree

d3man
08-30-2013, 01:41 PM
2.25 rear stagger

JustAddDirt
08-30-2013, 02:16 PM
Are you spring behind LR or clamp?
I would start off with less stagger.
if spring behind, more upper bar angle.
how much LR drop do you have?
What year car do you have, and what clip?

MM90
08-30-2013, 03:02 PM
If you're new to dirt I might suspect you have a tight-loose entry condition. You might need to loosen the car up on entry to fix the rest of your corner. Just a thought.

HEAVY DUTY
08-30-2013, 07:48 PM
Stiffen LF and RR to start with. Put a 750 on the LF, and a 225 on the RR if it is on the axle tube. Your car wont have any sidebite with a soft lf and rr spring. What left side % do you have? What air pressures are you running?

d3man
08-31-2013, 06:48 AM
Left rear spring is behind axle .air 10lr 12-14rr 13 on both fronts.. I went less spring in left front more spring right front because it was tight then loose . I had no angle in the lowers and now have some angle to help entry but all these changes hurt drive off! I have raised panhard at pinion it's slightly above centerline and then raised on frame side to adjust loose in with 2 1/2 split. Axle drop lr was 4 1/2 inches giving 38 degree angle

d3man
08-31-2013, 06:49 AM
Rr spring is in front of axle

d3man
08-31-2013, 06:51 AM
Car will turn in really good but in tacky in gets loose in slick which is mostly what the track does i can turn under everyone but lost forward bite doing this

d3man
08-31-2013, 06:59 AM
It's 2002 and a metric clip with nova lowers

Confused?
08-31-2013, 07:57 AM
Not enough dynamic LU bar angle and too much stagger. Where is the rearend located, right to left, in the car? Are the right side wheels lined up or the left sides?

JustAddDirt
09-03-2013, 08:04 AM
Confused? is right.
Need to go up 1 hole on LR upper bar. Leave drop alone and just raise bar. should be 44-45º
2" LR backspace wheel.
4" backspace RR wheel.
It is probably loose because you have no RR spring to hold car up.
that thing should be doing a 3 wheeled wheelie middle of corner off with a 150 spring.
If you are on a Z link RR, and spring on birdcage, you might need a 200 spring.
Also, I am wondering if you are good on entry, tight in the center, and having to break car loos, resulting in no middle off traction? just a thought

powerslide
09-04-2013, 11:08 AM
I would suggest listening to the chassis builder to start with. His screen name is Heavy Duty. He has cars winning races every weekend.