mono-ball bj's

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Jan 8, 2009 | 06:38 PM

BrianCunningham

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From: Boston, Dallas, Detroit, SoCal, back to Boston MA

mono-ball bj's

If they'll clear my wheels, looks like a great way to raise my upper control arms

http://www.circletrack.com/techartic.../photo_03.html

Like the tip

Quote:

Monoball ball joints allow adjustment in height to change the angle of the control arm. These items have become very popular with many teams. Teams in Stock classes have been known to weld the dust caps from stock units onto these so that they appear stock. You didn't hear that here.

Jan 9, 2009 | 10:55 AM

redrose

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From: backwoods upstate ny

off road only

http://www.speedwaymotors.com/RAISED...OINT,3522.html

http://www.speedwaymotors.com/Replac...oint,2111.html

NOT bolt-on...some fab reqd.

changing a-arm pivot heights will change "instant centers" of vehicle suspension, may result in extreme changes to steering with potential for loss of operator control resulting in injury or death, should only be done by professionals.

Jan 9, 2009 | 11:27 AM

ekess744

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Quote:

Originally Posted by redrose

I think he's aware of that. It's a track car

Jan 9, 2009 | 12:29 PM

BrianCunningham

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From: Boston, Dallas, Detroit, SoCal, back to Boston MA

I'm building a model of the suspension, I also have someone helping me out.

I know where I can get metric and regular GM versions, but I'm also fabbing fully adjustable a-arms.
http://www.guldstrand.com/scripts/pr...?idproduct=181

Jan 9, 2009 | 01:13 PM

Lincoln7

Heel & Toe

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From: Windsor,VA ........ 94 6spd

I was expecting something a little different from the title name...
jk, those are some sweet looking A-arms.

Jan 9, 2009 | 01:59 PM

80sRule

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From: W MI

Quote:

Originally Posted by Lincoln7

I was expecting something a little different from the title name...
jk, those are some sweet looking A-arms.

For some reason I though about a mildly confused Sheryl Crow.

Jan 9, 2009 | 04:35 PM

redrose

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From: backwoods upstate ny

Quote:

Originally Posted by BrianCunningham

most do 1/4, 1/2, even full size "front view" layouts on paper to determine pivot points and arm lengths...faster and cheaper than experimenting in steel.

inner pivots on early adjustable a-arms were problematic due to inner pivots rotating around the cross shafts...current fad:
http://www.speedwaymotors.com/ADJUST...T-8-,2117.html
note attractive price and ready for screw-in b/j...check your local circle track vendor, similar price/slight variations abound

Jan 9, 2009 | 05:16 PM

BrianCunningham

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Thanks for the link, I was wonder why they didn't go direct.
That's how my friends GT1 car is setup.

BTW I can do it on paper, but I own my own seat of SolidWorks.
I modeled the mono-ball balljoint today.

Car frame

upright

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Jan 9, 2009 | 11:10 PM

RatC4

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From: Oakland CA

Quote:

Originally Posted by 80sRule

For some reason I though about a mildly confused Sheryl Crow.

She and Lance split up.

Jan 10, 2009 | 10:51 AM

#10

Droshki

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From: Freeport FL

Please post video of injury and/or death

Jan 10, 2009 | 09:00 PM

#11

BrianCunningham

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From: Boston, Dallas, Detroit, SoCal, back to Boston MA

Will do

CAD model is coming along.

For now, I'm not actually replacing the bottom one, just the top. It was easy to do a copy/paste and change the dimensions.

Jan 11, 2009 | 10:16 PM

#12

BrianCunningham

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I got the upright modeled, if you recheck the photo above you'll see it's been added, which means I can start playing with it.

All I can say right now, it's that it's rather enlightening to say the least!

Jan 13, 2009 | 08:21 PM

#13

BrianCunningham

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If you recheck the photo, you'll see I added the ground.

Tire circle looks below the surface since it gets squished by the weight of the car.

In order to compensate the lower control arm is no longer level. very similar to the rear.

I'm looking forward to doing the rear and seeing how they match.

right now I'm modelling wheels, stocker, plus the ones I have.

15x7x17 215

16x8.5x32 255
16x8.5x50 255

16x9.5x38 255
16x9.5x56 255

17x8.5x56 255
17x9.5x56 275/285
17x11x36 315 ZR1
17x11x50 315 GS

Need to measure my offsets
17x12
18x12

Jan 13, 2009 | 10:52 PM

#14

redrose

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From: backwoods upstate ny

Quote:

Originally Posted by BrianCunningham

In order to compensate the lower control arm is no longer level. very similar to the rear.

compensate for ??

what values of camber gain, roll center, and c.g. height are intended ??

Jan 14, 2009 | 01:33 PM

#15

BrianCunningham

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From: Boston, Dallas, Detroit, SoCal, back to Boston MA

Perhaps it was intended, not being the original enginneer, had to tell

the roll center looks a lot higher than I thought it would be.

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