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Originally Posted by Mean 69
My credentials are BS Applied Physics, Optics, with a smattering of graduate studies in Optical Engineering, as well as graduate level Business. Katz is a BSME. We also consult with professional engineering firms for supplemental analysis that we do not have the capability to do, these firms (one main firm) have a tremendous amount of depth. My last position in the corporate world was Director of Core Module Engineering for a medical laser company, where I had a team of highly skilled engineers from multiple disciplines that designed an incredibly complex opto-mechanical/electro-optical laser based delivery system for use in vision correction surgery. In relative terms, the engineering complexity of designing a performance suspension system is childs play compared to the projects I have successfully led in the past (this is no way intended to belittle what we are doing, nor is it to too my own horn).
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So, you are not a suspension engineer. For that matter you are not an engineer. Director of a medical laser company does not correlate to suspension engineer in any way. Just an observation.
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The Watt's brackets are placed below the axle for a couple reasons: our philosophy is to have low RRCH, placing the pickup points lower on the axle puts the bellcrank more in line with the pickups, and therefore reduces the bending moment on the links themselves (more of a compression/tensile load in this fashion).
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There is a bending moment on the links? How does that happen with a rod end?
Again, most of my questions have not been answered. Maybe they were lost in translation or you just don't have the numbers. You may want to have them handy at some point in the future. It may help market it better. Right now I keep seeing excerpts from Milliken and Adams. I have those books. I do not need to read them here.
The things I would still like to see are:
1. Was this designed for a range of ride heights? If so, what is the range and the Jounce and Rebound levels for each ride height.
2. It looks like the tubes for the watts link hang below the diff. How far below, and what is the ground clearance at curb and full jounce?
3. What is the rear roll steer % at each curb height?
4. What is the range of anti squat and anti lift %?
5. I know you need to remove a portion of the tunnel, do you need to remove any of the floor or trunk to accommodate the rear mount for the three link. It seems like it would limit jounce travel.
7. How long are the links for the watts link? What about the length of the bell crank? I guess I can always scale them from a drawing or measure them at SEMA.
These sound like items that should have been design criteria.
I wish you luck. It might be wise to have this information available at SEMA.