[DeTomaso] Any experience with Marino's offset control armbushings to increase caster?

Tomas Gunnarsson guson at home.se
Thu Apr 3 04:58:10 EDT 2014 

You would have to change the knuckle too unless you want crazy camber.
 
http://www.njstangers.org/attachments/forum/nj-stangers-lounge-67/8080d1
372256075-carbage-camber.jpg
 
:-D
 
Tomas

<-----Ursprungligt Meddelande----->

 	  	 From: thomas [thomas at hax.se]
Sent: 2/4/2014 9:20:57 PM
To: jderyke at aol.com
Cc: kenn_green at yahoo.com;detomaso at poca.com
Subject: Re: [DeTomaso] Any experience with Marino's offset control
armbushings to increase caster? 

Marino's bushings are offset both upper and lower, in opposite
directions naturally. 

What about shortening the upper A-arm and move the upper ball joint
inwards to reduce the scrub radius? 

Would this mess up the front end geometry? 

Thomas 

> 2 apr 2014 kl. 21:53 skrev jderyke at aol.com: 
> 
> With all the upper ball-joint shims on one side PLUS offset upper
a-arm 
> bushings, the total negative caster will be around -4.6 or so degrees.
> If you need more than that, also installing offset LOWER a-arm
bushings 
> (offset the other way) adds another couple of negative degrees. Having
> a machine shop mill about 0.080"-or-so off one side of the upper ball 
> joint carrier can add yet another degree (you'll then need a new
0.080" 
> thick shim). Once the bushings are in place, you can fine-tune the 
> caster setting by moving upper ball-joint shims around. But remember- 
> as caster goes up (negative), steering effort also goes up. Corvettes 
> and other high-speed sports cars run a maximum of -7 degrees caster, 
> but they also use power steering to lessen the resulting steering
wheel 
> load. 
> Judy and I find that - 4.5 degrees is an excellent compromise in our 
> '72L with 245-50 front tires over the maximum stock setting of about 
> -2.6 degrees. And after everything is done, the front wheels will 
> definitely need to be re-aligned. While this is going on, check front 
> brake hose routing so no tire rubbing occurs, and that large tires do 
> not contact the right side wiper shield at full-lock. I've had offset 
> upper bushings in place so long on our car, I can't remember how it 
> steered before. 
> 
> -----Original Message----- 
> From: Ken Green <kenn_green at yahoo.com> 
> To: cengles <cengles at cox.net> 
> Cc: detomaso <detomaso at poca.com> 
> Sent: Wed, Apr 2, 2014 12:30 pm 
> Subject: Re: [DeTomaso] Any experience with Marino's offset control
arm 
> bushings to increase caster? 
> Chuck, 
> Marino said they only provide maybe one additional degree of 
> caster. Did you do something more than just make one end thinner? 
> Seems like you can only get maybe 1/8 inch (1/4 inch total) of 
> shifting? I'm not sure what the separation between ball joints is, but
> that looks like less than 2 degrees of added caster? 
> Ken 
> From: "[1]cengles at cox.net" <[2]cengles at cox.net> 
> To: [3]kenn_green at yahoo.com 
> Cc: [4]detomaso at poca.com 
> Sent: Wednesday, April 2, 2014 11:33 AM 
> Subject: Re: [DeTomaso] Any experience with Marino's offset control
arm 
> bushings to increase caster? 
> Dear Ken, 
> 1) no experience with Marino's offset bushings 
> 2) The offset homemade bushings I have provide 5 degrees 
> of 
> positive caster with major improvement in handling and high speed 
> stability. Highly recommended 
> 3) Marino is a good guy and a reliable, reputable vendor 
> in my opinion. 
> Go buy'em, Chuck Engles 
>> On Wed, Apr 2, 2014 at 1:12 PM, Ken Green wrote: 
>> Can anyone comment of the benefitA and durability ofA Marino's 
> offset 
> front control armA bushings?A 
>> 
>> Thanks, 
>> 
>> Ken 
>> 
>> ------------------------------ 
>> 
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>> 
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> References 
> 
> 1. [9]mailto:DeTomaso at poca.com 
> 2. [10]http://poca.com/mailman/listinfo/detomaso_poca.com 
> 3. [11]mailto:DeTomaso at poca.com 
> 4. [12]http://poca.com/mailman/listinfo/detomaso_poca.com 
> 
> _______________________________________________ 
> 
> Detomaso Forum Managed by POCA 
> 
> DeTomaso mailing list 
> [13]DeTomaso at poca.com 
> [14]http://poca.com/mailman/listinfo/detomaso_poca.com 
> 
> References 
> 
> 1. mailto:cengles at cox.net 
> 2. mailto:cengles at cox.net 
> 3. mailto:kenn_green at yahoo.com 
> 4. mailto:detomaso at poca.com 
> 5. mailto:DeTomaso at poca.com 
> 6. http://poca.com/mailman/listinfo/detomaso_poca.com 
> 7. mailto:DeTomaso at poca.com 
> 8. http://poca.com/mailman/listinfo/detomaso_poca.com 
> 9. mailto:DeTomaso at poca.com? 
> 10. http://poca.com/mailman/listinfo/detomaso_poca.com 
> 11. mailto:DeTomaso at poca.com? 
> 12. http://poca.com/mailman/listinfo/detomaso_poca.com 
> 13. mailto:DeTomaso at poca.com 
> 14. http://poca.com/mailman/listinfo/detomaso_poca.com 
> 
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-------------- next part --------------
   You would have to change the knuckle too unless you want crazy camber.



   [1]http://www.njstangers.org/attachments/forum/nj-stangers-lounge-67/80
   80d1372256075-carbage-camber.jpg



   :-D



   Tomas
   <-----Ursprungligt Meddelande----->

       From: thomas [thomas at hax.se]
   Sent: 2/4/2014 9:20:57 PM
   To: jderyke at aol.com
   Cc: kenn_green at yahoo.com;detomaso at poca.com
   Subject: Re: [DeTomaso] Any experience with Marino's offset control
   armbushings to increase caster?
   Marino's bushings are offset both upper and lower, in opposite
   directions naturally.
   What about shortening the upper A-arm and move the upper ball joint
   inwards to reduce the scrub radius?
   Would this mess up the front end geometry?
   Thomas
   > 2 apr 2014 kl. 21:53 skrev jderyke at aol.com:
   >
   > With all the upper ball-joint shims on one side PLUS offset upper
   a-arm
   > bushings, the total negative caster will be around -4.6 or so
   degrees.
   > If you need more than that, also installing offset LOWER a-arm
   bushings
   > (offset the other way) adds another couple of negative degrees.
   Having
   > a machine shop mill about 0.080"-or-so off one side of the upper ball
   > joint carrier can add yet another degree (you'll then need a new
   0.080"
   > thick shim). Once the bushings are in place, you can fine-tune the
   > caster setting by moving upper ball-joint shims around. But remember-
   > as caster goes up (negative), steering effort also goes up. Corvettes
   > and other high-speed sports cars run a maximum of -7 degrees caster,
   > but they also use power steering to lessen the resulting steering
   wheel
   > load.
   > Judy and I find that - 4.5 degrees is an excellent compromise in our
   > '72L with 245-50 front tires over the maximum stock setting of about
   > -2.6 degrees. And after everything is done, the front wheels will
   > definitely need to be re-aligned. While this is going on, check front
   > brake hose routing so no tire rubbing occurs, and that large tires do
   > not contact the right side wiper shield at full-lock. I've had offset
   > upper bushings in place so long on our car, I can't remember how it
   > steered before.
   >
   > -----Original Message-----
   > From: Ken Green <kenn_green at yahoo.com>
   > To: cengles <cengles at cox.net>
   > Cc: detomaso <detomaso at poca.com>
   > Sent: Wed, Apr 2, 2014 12:30 pm
   > Subject: Re: [DeTomaso] Any experience with Marino's offset control
   arm
   > bushings to increase caster?
   > Chuck,
   > Marino said they only provide maybe one additional degree of
   > caster. Did you do something more than just make one end thinner?
   > Seems like you can only get maybe 1/8 inch (1/4 inch total) of
   > shifting? I'm not sure what the separation between ball joints is,
   but
   > that looks like less than 2 degrees of added caster?
   > Ken
   > From: "[1]cengles at cox.net" <[2]cengles at cox.net>
   > To: [3]kenn_green at yahoo.com
   > Cc: [4]detomaso at poca.com
   > Sent: Wednesday, April 2, 2014 11:33 AM
   > Subject: Re: [DeTomaso] Any experience with Marino's offset control
   arm
   > bushings to increase caster?
   > Dear Ken,
   > 1) no experience with Marino's offset bushings
   > 2) The offset homemade bushings I have provide 5 degrees
   > of
   > positive caster with major improvement in handling and high speed
   > stability. Highly recommended
   > 3) Marino is a good guy and a reliable, reputable vendor
   > in my opinion.
   > Go buy'em, Chuck Engles
   >> On Wed, Apr 2, 2014 at 1:12 PM, Ken Green wrote:
   >> Can anyone comment of the benefitA and durability ofA Marino's
   > offset
   > front control armA bushings?A
   >>
   >> Thanks,
   >>
   >> Ken
   >>
   >> ------------------------------
   >>
   >> _______________________________________________
   >>
   >> Detomaso Forum Managed by POCA
   >>
   >> DeTomaso mailing list
   >> [1][5]DeTomaso at poca.com
   >> [2][6]http://poca.com/mailman/listinfo/detomaso_poca.com
   > _______________________________________________
   > Detomaso Forum Managed by POCA
   > DeTomaso mailing list
   > [3][7]DeTomaso at poca.com
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   >
   > References
   >
   > 1. [9]mailto:DeTomaso at poca.com
   > 2. [10]http://poca.com/mailman/listinfo/detomaso_poca.com
   > 3. [11]mailto:DeTomaso at poca.com
   > 4. [12]http://poca.com/mailman/listinfo/detomaso_poca.com
   >
   > _______________________________________________
   >
   > Detomaso Forum Managed by POCA
   >
   > DeTomaso mailing list
   > [13]DeTomaso at poca.com
   > [14]http://poca.com/mailman/listinfo/detomaso_poca.com
   >
   > References
   >
   > 1. mailto:cengles at cox.net
   > 2. mailto:cengles at cox.net
   > 3. mailto:kenn_green at yahoo.com
   > 4. mailto:detomaso at poca.com
   > 5. mailto:DeTomaso at poca.com
   > 6. http://poca.com/mailman/listinfo/detomaso_poca.com
   > 7. mailto:DeTomaso at poca.com
   > 8. http://poca.com/mailman/listinfo/detomaso_poca.com
   > 9. mailto:DeTomaso at poca.com?
   > 10. http://poca.com/mailman/listinfo/detomaso_poca.com
   > 11. mailto:DeTomaso at poca.com?
   > 12. http://poca.com/mailman/listinfo/detomaso_poca.com
   > 13. mailto:DeTomaso at poca.com
   > 14. http://poca.com/mailman/listinfo/detomaso_poca.com
   >
   >
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   >
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   >
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   >
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References

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