[DeTomaso] machine ball joint to modify alignment

[hemipanter at hemipanter.se]

If I remember right I cut 1/4" of my ball joint, or maybe a little less.
Goran

> What's the point of moving the joint .01"? This equals a caster change of
> less than .1 degree. Thomas Tornblom was considering moving hos joint
> .75".
> That's about 3.5 degrees of caster change.
>
> Tomas
>
> -----Original Message-----
> From: detomaso-bounces at realbig.com
> [mailto:detomaso-bounces at realbig.com]On Behalf Of Julian Kift
> Sent: den 2 maj 2010 17:40
> To: cengles at cox.net; boyd411 at gmail.com
> Cc: De Tomaso List
> Subject: Re: [DeTomaso] machine ball joint to modify alignment
>
>
> I have heard various amounts that can be safely milled off of the
> balljoint
> before breaking through to the ball, most of those quoted values are
> around
> one hundredth of an inch. It might be wise to practice and determining the
> safe limit on your old joint prior to milling the new one.
>
>
>
> Julian
>
>> From: cengles at cox.net
>> To: boyd411 at gmail.com
>> Date: Sat, 1 May 2010 17:09:09 -0500
>> CC: detomaso at realbig.com
>> Subject: Re: [DeTomaso] machine ball joint to modify alignment
>>
>> Dear Boyd,
>>
>> First: machining the upper ball joint mount will not change the
>> camber. The camber is changed by moving the upper ball joint in or out
>> along the channel of the upper a arm where the ball joint mount sits.
>> OK,
>> so the upper ball joint mount sits in the channel of the upper a arm and
>> moves in and out to adjust camber.
>>
>> Second: machining the upper ball joint mount will change the
>> caster. Machining it requires removal of the upper ball joint mount and
>> removal of the ball joint. A machinist then removes from the rear edge
>> of the mount a small amount of material, say five-hundredths of an inch.
>> You then replace the upper ball joint mount in its normal upper a arm
>> channel, but you can now shift it rearwards five hundredths of an inch.
>> That movement is maintained by placing five-hundredths of an inch of
>> shims
>> in front of the mount to provide snug fitment. Replace the bolts and the
>> new rearward position of the mount by our theoretical five-hundredths of
> an
>> inch provides a rearward tilt of the vertical axis of the front wheel,
> which
>> will add, perhaps, one or two degrees of Positive caster. Positive
>> caster
>> is a good thing.
>>
>> The rearward tilt of the wheel axis can be obtained by the
>> modified front upper ball joint mount; by physically modifying the upper
>> a
>> arm; and by modifying the front upper and lower a arm bushings----or by
>> a
>> combination of techniques. They all have advantages and disadvantages,
>> but
>> all produce the desirable increase in positive caster.
>>
>> I hope this makes sense.
>>
>>
>> The Rookie Mechanic, Chuck Engles
>>
>>
>>
>> -----Original Message-----
>> From: detomaso-bounces at realbig.com [mailto:detomaso-bounces at realbig.com]
> On
>> Behalf Of boyd casey
>> Sent: Saturday, May 01, 2010 4:49 PM
>> To: De Tomaso List
>> Subject: [DeTomaso] machine ball joint to modify alingment
>>
>> Can some one out line the procedure for machining the ball joint to
> improve
>> or increase the caster or camber available while alignment on a 73
> Panteras
>> suspension.
>> Please explain the process and the principal if you know and can take
>> the
>> time to explain it. Thanks,
>> Boyd
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