What spindles are best to run on Smackdown with raised rail and cross member? I've been running the standard 6° stuff because I like them. But father time has taken over and I'm getting skunked through the corners by driveability. If I enter high I have to stay high, or the same on bottom, go in low come off low. I can't steer my car like others. I run with some guys that have the same car running Gen-X uppers and lowers, with S-7 right front spindle, and Gen-X left front spindle. Does this sound right? I'm stumped, I've been tried and true to the 6° spindles and ran very competitive with them but we are getting beat, and I'm about 99% positive its front suspension. Any thoughts or help will be greatly appreciated.
Smackdown Spindles
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Never heard of that combo. It might be legit. I don't know steering arm differences off the top of my head. Your car lacks Ackerman compared to most newer stuff.Modern Day Spec Wedge Racing
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A smack down just doesn't follow the front wheels like most of the newer stuff with cross members back farther in the cars. Pin inclination isn't really a part of the story.Originally posted by hucktyson View PostI highly doubt that them having increased king pin inclination is making their cars more driveable , if anything I think it would make it worse. They are probably doing something different with shocks
Than you are.Modern Day Spec Wedge Racing
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I'm running a smack that we have raised the rack and frame also.We had moved the front wheels forward a small amount and ran a little more caster to try to get more ackerman.Ran more static toe out also.I've measured some other cars and the rack was 1'' back but with 1/2'' shorter steering arms.I think with the taller spindles there is less camber gain.Undecided on the spindle angle, because a dirt car backsteers so much what you gain at one point you might lose at anther.When I moved the rack it changed the bump steer so much, I had to get a longer rack with slotted eyes.
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I have put plenty of camber gain in one. We won races, but it still didn't steer like a gen x or most of the newer cars.Originally posted by save the racers View PostI'm running a smack that we have raised the rack and frame also.We had moved the front wheels forward a small amount and ran a little more caster to try to get more ackerman.Ran more static toe out also.I've measured some other cars and the rack was 1'' back but with 1/2'' shorter steering arms.I think with the taller spindles there is less camber gain.Undecided on the spindle angle, because a dirt car backsteers so much what you gain at one point you might lose at anther.When I moved the rack it changed the bump steer so much, I had to get a longer rack with slotted eyes.Modern Day Spec Wedge Racing
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That's what I'm up against, taking it and getting Gen-X front clip put on with the correct suspension. There's a guy around here locally that has changed all types of cars to the X package on his jig and there dominating. Spoke to Keith about doing it and he said you will create more problems because the chassis not high enough. I just don't understand how. We are running the 6° spindles which has a higher king pin location versus the newer stuff. I can run with my right front bottomed out and drag nothing. Just seems if you lower the king pin that 1" to 1¼" it will raise chassis height even more. I normally don't run that much shock travel, magic number I've found is between 4 and 4½".
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Are you referring to what I would call the "snout" of the spindle (the part the hub mounts to) as the king pin? King pin (or steering axis) inclination is an imaginary line through the center of the ball joints. The "drop" of the spindle is where that snout is up and down in relation to the ball joints. So yes, if you went to the S7 spindle (which has less drop than the original Smackdown spindle) and left your ride height the same, the car would sit higher. With the S7 stuff, the ride heights are dropped down to 3.5". That changes the angle of the control arms, which is to say other things are taking place as well.
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To achieve the correct static geometry, ride heights are different on all 3 front ends.
And 4" of shock travel on one control arm is not the same as on another when it comes to actual chassis movement. They are different length control arms and have different motion ratios.
And for what it's worth (maybe somewhat off topic) there are a lot of things different about a Gen-X from a smack than just the front end geometry. The rear end geometry is completely different and doesn't even call for the same size rear (tube lengths are different). They are just completely different cars in every way imaginable.
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Measured my spare smack spindles ,both are 6 degrees.Anybody know what gen x or s7 are?I have to think that the angle and the caster setting should work together.Has anybody tried longer control arms?I've measured several other brands of cars at 19.25 lowers 8.250 upper.
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S7 is 7 degrees. I have run up to 20" rf lower on smackOriginally posted by save the racers View PostMeasured my spare smack spindles ,both are 6 degrees.Anybody know what gen x or s7 are?I have to think that the angle and the caster setting should work together.Has anybody tried longer control arms?I've measured several other brands of cars at 19.25 lowers 8.250 upper.Modern Day Spec Wedge Racing
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