Re: [DML] Shock Kit

[tobyp@xxxxxxxxxxxx]

Jim - This is a very insightful analysis of the rear suspension 
geometry.  You are quite correct in saying that the best scenario 
would be a spherical bearing on the lower attachment of the rear 
shock, because of the rotation that you mention.  The very best 
setup that I know of are the Carrera shocks that were available at 
one point.  I believe that they still are, but I will have to 
contact them to verify that.  The Carrera shocks have a teflon-lined 
spherical bearing to avoid the twisting force (moment) on the bolts 
that you noted, as well as a fully threaded sleeve that locks to the 
outside of the shock body.  They have a threaded ring spring perch 
that goes on the sleeve, allowing an infinite range of height 
adjustability.  The only downside is that they are quite expensive.  
I'll let the List know what I find out.  These are the shocks that I 
installed on Winged1 when I lowered her down in the early 90's.

Toby Peterson  VIN 2248 (Winged1)
DeLorean Parts Northwest
www.delorean-parts.com  

--- In dmcnews@xxxxxxxxxxxxxxx, jwit6@xxxx wrote:
> John,
> The thought of solving the rear lower shock mount and coil spring 
collar problem in the same way you chose, has crossed my mind. But I 
was concerned with the stress placed on the lower shock bolt as the 
trailing arm moves up and down through its travel. The trailing arm 
pivots about the trailing arm bolt, and the travel at the lower 
shock bolt is an arc, not a straight line. The lower shock bolt does 
not remain at a constant 90 degree angle to the shock body, so in 
the original design the twisting motion encountered is absorbed by 
the lower shocks rubber grommet. Do your platforms lower bolt holes 
ride on the steel collar that's inside the shocks rubber grommet, or 
does it ride right on the lower shock bolt? Either way there is no 
way to escape the twisting moment of the basic design. What is 
really needed is a spherical mount bearing or rod end.
> 
> Also, do your rear shocks allow full compression without the 
shocks dust cover contacting the lower coil spring seat? Most off 
the shelf shocks I've seen like the Monroes for instance require 
that the dust cover be cut back to allow the required clearance.
> 





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