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Dropped Spindles #979460
04/24/11 01:17 PM
04/24/11 01:17 PM
Joined: Jan 2010
Posts: 84
Minnesota
C
Coldart Offline OP
member
Coldart  Offline OP
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Joined: Jan 2010
Posts: 84
Minnesota
Want to lower this dart and keep the alignment in control.

Anyone use these? AIRBAGIT.COM Z2230 They claim there dropped, but picture looks like stock knockoffs.

Backed the bars off, but with trying to keep 5" travel I've got camber issues.

Probably a good 2 mos before it goes to track - no time and even less money

Re: Dropped Spindles [Re: Coldart] #979461
04/24/11 01:53 PM
04/24/11 01:53 PM
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441 Offline
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Leon441  Offline
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Lynchburg, VA
If the spindle is a 2" drop as stated it is surely the way to go. Lowering with the torsion bar screws the geometry up.


Career best 8.02 @ 169 at 3050# and 10" tires small block power.
Re: Dropped Spindles [Re: Coldart] #979462
04/24/11 02:59 PM
04/24/11 02:59 PM
Joined: Jan 2003
Posts: 19,379
Las Vegas
Al_Alguire Offline
I Live Here
Al_Alguire  Offline
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Las Vegas
There are drop spindles avaialable. IIRC Fatman fabrication makes them..


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: Dropped Spindles [Re: Al_Alguire] #979463
04/24/11 03:05 PM
04/24/11 03:05 PM
Joined: Jan 2003
Posts: 6,266
Renton Washington
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Triple Threat Offline
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Triple Threat  Offline
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Posts: 6,266
Renton Washington
I'm dealing with this at the moment as well. Lower it down and camber goes to poop. Raise it up and the car wont transfer weight. Looking at everything from Tubular UCA's, Ajustable Heim Joint strut rods and everything else. Not sure which direction to go.

Last edited by Triple Threat; 04/24/11 03:17 PM.

-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
Re: Dropped Spindles [Re: Triple Threat] #979464
04/24/11 05:19 PM
04/24/11 05:19 PM
Joined: Jan 2003
Posts: 27,471
So Cal
autoxcuda Offline
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So Cal
Quote:

I'm dealing with this at the moment as well. Lower it down and camber goes to poop. Raise it up and the car wont transfer weight. Looking at everything from Tubular UCA's, Ajustable Heim Joint strut rods and everything else. Not sure which direction to go.




Adjust the camber again and re-align the car when you lower the car that much. Use offset Moog 7103 upper control arm bushing installed for more postive caster (don't follow instructions) to make the car easier to drive straighter (lower E.T.) down the strip.

Re: Dropped Spindles [Re: Leon441] #979465
04/24/11 05:29 PM
04/24/11 05:29 PM
Joined: Jan 2003
Posts: 27,471
So Cal
autoxcuda Offline
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Quote:

If the spindle is a 2" drop as stated it is surely the way to go. Lowering with the torsion bar screws the geometry up.




How does it screw the geometry up?

It changes the alignment. So you re-align the car and move on.

Re: Dropped Spindles [Re: autoxcuda] #979466
04/24/11 05:46 PM
04/24/11 05:46 PM
Joined: Dec 2005
Posts: 872
NJ
SSDAcuda Offline
super stock
SSDAcuda  Offline
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Posts: 872
NJ
The Bump steer goes to he!! when lowered.

Also, don't know about now, but when I sent my factory spindles out to lamb, there were no forged drop spindles. I think all the dropped spindles were two piece. This was about a year ago, so might've changed, but lamb wouldn't use anything but forged factory spindles.

The car sits low enough with the factory spindles and lowered torsion bars, but bump steer was addressed in the build...


SS/DA 1924
Re: Dropped Spindles [Re: Al_Alguire] #979467
04/24/11 06:11 PM
04/24/11 06:11 PM
Joined: Jun 2009
Posts: 1,212
QLD Australia
Keith Black® Offline
pro stock
Keith Black®  Offline
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Posts: 1,212
QLD Australia
Quote:

There are drop spindles avaialable. IIRC Fatman fabrication makes them..



I have the fatman spindles... get the magnum force ones: they're 1-piece=better.


--------------------------------
Darren Beale
Keith Black Racing Engines®
Re: Dropped Spindles [Re: SSDAcuda] #979468
04/24/11 06:38 PM
04/24/11 06:38 PM
Joined: Jan 2003
Posts: 27,471
So Cal
autoxcuda Offline
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Posts: 27,471
So Cal
Quote:

The Bump steer goes to he!! when lowered.

Also, don't know about now, but when I sent my factory spindles out to lamb, there were no forged drop spindles. I think all the dropped spindles were two piece. This was about a year ago, so might've changed, but lamb wouldn't use anything but forged factory spindles.

The car sits low enough with the factory spindles and lowered torsion bars, but bump steer was addressed in the build...




Is that by yours/Lamb's bumpsteer measurements? How much worse did they get and where on the bumpsteer curve?

The bump steer curve doesn't alter when lowered. Just the zero start point changes so the end point jounce and rebound points all shift up. But things can get worse near the new endpoints.

There are forged dropped spindles on the market now. Came about a year or so ago.

Re: Dropped Spindles [Re: autoxcuda] #979469
04/24/11 06:41 PM
04/24/11 06:41 PM
Joined: Jan 2003
Posts: 8,016
Polson, MT
DoctorDiff Offline
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DoctorDiff  Offline
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Polson, MT
As far as I know, forged Mopar drop-knuckles do not exist.

Magnum Force drop-kuckles are cast.

Re: Dropped Spindles [Re: DoctorDiff] #979470
04/24/11 06:51 PM
04/24/11 06:51 PM
Joined: Jan 2003
Posts: 27,471
So Cal
autoxcuda Offline
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So Cal
Quote:

As far as I know, forged Mopar drop-knuckles do not exist.

Magnum Force drop-kuckles are cast.




Looked back the ad for them you're right, cast. Isn't that pretty common with the aftermarket dropped spindles?

Re: Dropped Spindles [Re: SSDAcuda] #979471
04/24/11 06:56 PM
04/24/11 06:56 PM
Joined: Jan 2003
Posts: 27,471
So Cal
autoxcuda Offline
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autoxcuda  Offline
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Posts: 27,471
So Cal
Quote:

The Bump steer goes to he!! when lowered.

Also, don't know about now, but when I sent my factory spindles out to lamb, there were no forged drop spindles. I think all the dropped spindles were two piece. This was about a year ago, so might've changed, but lamb wouldn't use anything but forged factory spindles.

The car sits low enough with the factory spindles and lowered torsion bars, but bump steer was addressed in the build...




By your avatar I'm guessing you have an E-body (B-body same geometry). Hotchkis found that those front ends have a lot of bumpsteer. That's why they relocated the upper control arm pickup point. They said it was not nearly as bad on an A-bodies.

Re: Dropped Spindles [Re: autoxcuda] #979472
04/24/11 07:12 PM
04/24/11 07:12 PM
Joined: Dec 2005
Posts: 872
NJ
SSDAcuda Offline
super stock
SSDAcuda  Offline
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Posts: 872
NJ
Yeah, E body and yes, gets pretty ugly at the ends. The starting point when lowered and at full extension.

The starting point in a drag car is minimal as the car should raise an inch from static on a pass, and you can limit the extension with limiters for launch, so manageable.


SS/DA 1924
Re: Dropped Spindles [Re: Triple Threat] #979473
04/24/11 07:19 PM
04/24/11 07:19 PM
Joined: Jan 2003
Posts: 8,032
Tulsa OK
Bad340fish Offline
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Bad340fish  Offline
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Posts: 8,032
Tulsa OK
Quote:

I'm dealing with this at the moment as well. Lower it down and camber goes to poop. Raise it up and the car wont transfer weight. Looking at everything from Tubular UCA's, Ajustable Heim Joint strut rods and everything else. Not sure which direction to go.




I have RMS tube uppers and strut rods on my car. Its set up with 4 degrees of postive caster and zero camber IIRC. Drives like a dream on the street and track.


68 Barracuda Formula S 340
Re: Dropped Spindles [Re: Al_Alguire] #979474
04/24/11 08:05 PM
04/24/11 08:05 PM
Joined: Jan 2003
Posts: 19,379
Las Vegas
Al_Alguire Offline
I Live Here
Al_Alguire  Offline
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Posts: 19,379
Las Vegas
These are from PST


Here is the fatman dropped spindle. These are not cast. Had a customer who had them on his race car.


"I am not ashamed to confess I am ignorant of what I do not know."

"It's never wrong to do the right thing"
Re: Dropped Spindles [Re: autoxcuda] #979475
04/24/11 08:13 PM
04/24/11 08:13 PM
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441 Offline
master
Leon441  Offline
master

Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Quote:

Quote:

If the spindle is a 2" drop as stated it is surely the way to go. Lowering with the torsion bar screws the geometry up.




How does it screw the geometry up?

It changes the alignment. So you re-align the car and move on.




Let me see if I can explain why I don't do what you are suggesting.
Determine a center point between the front and rear control arm bushings sense they are not at the same height. At ride height this point should be the same height from the ground as the center line of the upper ball joint, making the upper control arm as level as possible. That makes the upper ball joint at it's furthest position from the framerail. When you alter this, by lowering the car, the arm is pointed up from the center of the car. OK a drag car when it leaves picks the front end up extending the suspension. All that alignment you just done just went to the pasture as your camber just went negative. You can go one inch low at ride height and line the car up 1" extended as you would expect while going down the track.

Another thing to always keep in mind is the upper control arm is much shorter than the bottom. You would have to get way out there to make a huge difference on the bottom arm. A couple inches too high or too low in ride height...You line the car up and as soon as it moves you have a car out of alignment. The goal is to have a car in alignment at rest and going down the track. I have yet to see a stock suspension on a RWD mopar do that when the upper control arm is pointed in the weeds or up in the sky.

I am not a front suspension mastermind by far. I have just seen many problems on these cars. They all go back to this particular detail.

Leon


Career best 8.02 @ 169 at 3050# and 10" tires small block power.
Re: Dropped Spindles [Re: Leon441] #979476
04/24/11 09:29 PM
04/24/11 09:29 PM
Joined: Jun 2003
Posts: 9,225
Charleston
S
sixpackgut Offline
Drag Week Mod Champion
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Posts: 9,225
Charleston
after i put drop spindles on my car, i had to put heavier torsion bars to hold the car up and it really lost alot of its spring in the front and didnt hook quite as good as always had


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Re: Dropped Spindles [Re: autoxcuda] #979477
04/24/11 10:37 PM
04/24/11 10:37 PM
Joined: Jun 2009
Posts: 1,212
QLD Australia
Keith Black® Offline
pro stock
Keith Black®  Offline
pro stock

Joined: Jun 2009
Posts: 1,212
QLD Australia
Quote:

Quote:

As far as I know, forged Mopar drop-knuckles do not exist.

Magnum Force drop-kuckles are cast.




Looked back the ad for them you're right, cast. Isn't that pretty common with the aftermarket dropped spindles?



the PST & Magnum Force ones are the same. they're cast but very strong- see recent test in MA magazine. If I had the choice I'd be going with the PST/MF as they're one piece for safety reasons. I have the fatmans' & the quality is 7/10.


--------------------------------
Darren Beale
Keith Black Racing Engines®






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