[DeTomaso] Alignment for high speed
Julian Kift
julian_kift at hotmail.com
Sat Aug 15 10:42:09 EDT 2015
Ken,
Yes that's the mod I have done which pushes the top of the wheel rearward.
Julian
Date: Sat, 15 Aug 2015 14:20:39 +0000
From: kenn_green at yahoo.com
To: julian_kift at hotmail.com; cengles at cox.net; boyd411 at gmail.com
CC: detomaso at poca.com; teampantera at yahoo.com
Subject: Re: [DeTomaso] Alignment for high speed
Julian,
I think Johnny's mods are just to the top control arm, so all the pivot is about the lower ball joint.
The good thing about offset control arm bushings is that the pivot is about the center. I forget the exact numbers, but I thought that the offset bushings, plus machining the upper ball joint (which also results in pivot about the lower ball joint), seems to provide enough caster for most folks.
Ken
From: Julian Kift <julian_kift at hotmail.com>
To: cengles at cox.net; boyd411 at gmail.com
Cc: detomaso at poca.com; teampantera at yahoo.com
Sent: Friday, August 14, 2015 9:57 PM
Subject: Re: [DeTomaso] Alignment for high speed
I believe the mod that Johnny does and which I also executed moves the balljoint 3/4 of an inch, providing about 7 degrees of caster; eleven is probably excessive IMO, especially ona narrow body car. I executed on my GT5 to try and reduce the tendency for tramlining of the 275 wide tires. I'm also intigued why Charles experienced tire rub in the fender upper front as the addition of positive caster rotates the wheel rearward over the center pivot point. Julian From: cengles at cox.net To: boyd411 at gmail.com Date: Thu, 13 Aug 2015 21:31:16 -0500 Subject: Re: [DeTomaso] Alignment for high speed CC: detomaso at poca.com; teampantera at yahoo.comDear Boyd, Eleven degrees! Impressive. Do be aware of my sad experience with five degrees of positive caster plus stock rolled fender lips plus nine inch wide by seventeen inch wheels with 245 mm wide tires----at full lock it tends to permit the tire to kiss the front upper outer fender lip. Following thatis a notable blemish and a trip to the paint and body man for a repair to fix the damage and a recontouring of the fender flair to prevent future "kisses".The advantages of big positive caster still outweigh these minor disadvantages. Positive Caster Ambassador, Chuck EnglesFrom: Boyd Casey [mailto:boyd411 at gmail.com]Sent: Thursday, August 13, 2015 7:39 PMTo: Charles EnglesCc: mark skwarek; detomaso at poca.com; Mad Dog AntenucciSubject: Re: [DeTomaso] Alignment for high speedI sent my front upper A - arms and had them modified in a manner similar to patMicals. I used Johnny woods to do the work. His modification is supposed to obtain around 11 degrees of caster.BoydOn Tue, Aug 11, 2015 at 10:56 AM, <cengles at cox.net> wrote: Dear Mark, "6.5 to 7 degrees of caster"......Well! I certainly think that you've just about nailed that issue! Not much more to add except the puny civilian alignment specs that I have may be of little use at the speeds you are looking at. Warmest regards, Chuck Engles On Tue, Aug 11, 2015 at 8:48 AM, mark skwarek wrote: I am using Delrin bushings and have 6.5 to 7 degrees of castor. Mark On Tuesday, August 11, 2015 9:26 AM, "cengles at cox.net" <cengles at cox.net> wrote: Dear Mark, Off the top of my head, the most positive caster that you can get is important. I *think* it is paramount and the other parameters and secondary. I have my alignments specs at home which I can send you this evening. Warmest regards, Chuck Engles On Mon, Aug 10, 2015 at 11:36 PM, mark skwarek via DeTomaso wrote: > Looking for alignment specs that work best for 145 to 165 mph driving. > Mark > > ------------------------------ > > _______________________________________________ > > Detomaso Forum Managed by POCA > Posted emails must not exceed 1.5 Megabytes > DeTomaso mailing list > [1]DeTomaso at poca.com > [2][1]http://poca.com/mailman/listinfo/detomaso_poca.com > > To manage your subscription (change email address, unsubscribe, etc.) > use the links above.References Visible links 1. javascript:parent.wgMail.openComposeWindow('DeTomaso at poca.com') 2. [2]http://poca.com/mailman/listinfo/detomaso_poca.com Hidden links: 3. [3]http://poca.com/mailman/listinfo/detomaso_poca.com_______________________________________________Detomaso Forum Managed by POCAPosted emails must not exceed 1.5 MegabytesDeTomaso mailing listDeTomaso at poca.com[4]http://poca.com/mailman/listinfo/detomaso_poca.comTo manage your subscription (change email address, unsubscribe, etc.) use the links above. _______________________________________________ Detomaso Forum Managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list DeTomaso at poca.com http://poca.com/mailman/listinfo/detomaso_poca.com To manage your subscription (change email address, unsubscribe, etc.) use the links above.References
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-------------- next part --------------
Ken,
Yes that's the mod I have done which pushes the top of the wheel
rearward.
Julian
__________________________________________________________________
Date: Sat, 15 Aug 2015 14:20:39 +0000
From: kenn_green at yahoo.com
To: julian_kift at hotmail.com; cengles at cox.net; boyd411 at gmail.com
CC: detomaso at poca.com; teampantera at yahoo.com
Subject: Re: [DeTomaso] Alignment for high speed
Julian,
I think Johnny's mods are just to the top control arm, so all the pivot
is about the lower ball joint.
The good thing about offset control arm bushings is that the pivot is
about the center. I forget the exact numbers, but I thought that the
offset bushings, plus machining the upper ball joint (which also
results in pivot about the lower ball joint), seems to provide enough
caster for most folks.
Ken
__________________________________________________________________
From: Julian Kift <julian_kift at hotmail.com>
To: cengles at cox.net; boyd411 at gmail.com
Cc: detomaso at poca.com; teampantera at yahoo.com
Sent: Friday, August 14, 2015 9:57 PM
Subject: Re: [DeTomaso] Alignment for high speed
I believe the mod that Johnny does and which I also executed moves
the
balljoint 3/4 of an inch, providing about 7 degrees of caster; eleven
is probably excessive IMO, especially ona narrow body car. I executed
on my GT5 to try and reduce the tendency for tramlining of the 275
wide
tires.
I'm also intigued why Charles experienced tire rub in the fender
upper
front as the addition of positive caster rotates the wheel rearward
over the center pivot point.
Julian
From: [1]cengles at cox.net
To: [2]boyd411 at gmail.com
Date: Thu, 13 Aug 2015 21:31:16 -0500
Subject: Re: [DeTomaso] Alignment for high speed
CC: [3]detomaso at poca.com; [4]teampantera at yahoo.com
Dear Boyd,
Eleven degrees! Impressive. Do be aware of my sad
experienc
e with five degrees of positive caster plus stock rolled fender lips
plus nine i
nch wide by seventeen inch wheels with 245 mm wide tires----at full
lock it tend
s to permit the tire to kiss the front upper outer fender lip.
Following that
is a notable blemish and a trip to the paint and body man for a repair
to fix th
e damage and a recontouring of the fender flair to prevent future
"kisses".
The advantages of big positive caster still outweigh these minor
disadvantages.
Positive Caster Ambassador, Chuck
Engles
From: Boyd Casey [mailto:[5]boyd411 at gmail.com]
Sent: Thursday, August 13, 2015 7:39 PM
To: Charles Engles
Cc: mark skwarek; [6]detomaso at poca.com; Mad Dog Antenucci
Subject: Re: [DeTomaso] Alignment for high speed
I sent my front upper A - arms and had them modified in a manner
similar to pat
Micals. I used Johnny woods to do the work. His modification is
supposed to obta
in around 11 degrees of caster.
Boyd
On Tue, Aug 11, 2015 at 10:56 AM, <[7]cengles at cox.net> wrote:
Dear Mark,
"6.5 to 7 degrees of caster"......Well! I certainly
think that you've just about nailed that issue! Not much more to add
except the puny civilian alignment specs that I have may be of little
use at the speeds you are looking at.
Warmest regards, Chuck Engles
On Tue, Aug 11, 2015 at 8:48 AM, mark skwarek wrote:
I am using Delrin bushings and have 6.5 to 7 degrees of castor.
Mark
On Tuesday, August 11, 2015 9:26 AM, "[8]cengles at cox.net"
<[9]cengles at cox.net> wrote:
Dear Mark,
Off the top of my head, the most positive caster that
you can get is important. I *think* it is paramount and the other
parameters and secondary. I have my alignments specs at home which
I
can send you this evening.
Warmest regards, Chuck Engles
On Mon, Aug 10, 2015 at 11:36 PM, mark skwarek via DeTomaso wrote:
> Looking for alignment specs that work best for 145 to 165 mph
driving.
> Mark
>
> ------------------------------
>
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>
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