And here are a couple of drawings that show there is almost no difference
Drawings by Stan
https://www.facebook.com/photo.php?fbid=10204172125878154&set=o.183025891821956&type=3&theater

Erf

On Saturday, December 27, 2014, Robert Mueller wrote:

> John,
>
> Here's a drawing of the OEM hub / knuckle showing the steering axis. I've
> made the statement:
>
> It appears to me that if you extend the steering axis (line through center
> of upper and lower ball joints) it will come close to
> going through the center of the tire contact patch.
>
>
> http://www.gmcmhphotos.com/photos/aa-miscellaneous-photos/p56759-steering-axis.html
>
> The spacer that the 1 Ton uses will shift the wheel / tire outwards.
>
> I am loathe to comment on the effects of that as I do not have a 1 ton
> front end and have never driven a GMC with a 1 ton front end.
> Empirical engineering says it's OK as the people that have them have not
> complained about what you've noted.
>
> Regards,
> Rob M.
> Sydney, Australia
> AUS '75 Avion - The Blue Streak TZE365V100428
> USA '75 Avion - Double Trouble TZE365V100426
>
> -----Original Message-----
> From: John R. Lebetski
>
> If the tire /wheel centerline is outside (wider than) the steering axis
> through the ball joints it will dart at the point where
> power exceeds
> available traction. I have never studied a 1ton up close, never worked on
> or driven one, and don't really understand the reason for
> the big spacers.
>
> I'm just making the stearing axis statement based on photos. I know it
> increases the load on the Tbars with a longer lever arm
> effective length, so someone please prove ne wrong.
> --
> John
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>


--
Gene Fisher -- 74-23,77PB/ore/ca
"Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist