Outboarding and front extensions - Page 2 - JeepForum.com
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post #16 of 21 Old 04-22-2018, 10:36 AM
mrblaine
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Is there a good alternative to the Synergy towers and lower shock mounts since it looks like they are not available anymore?
They are available but we have played with several out there and the nuance of the design seems to escape a bunch of folks. The upper bolt distance from the back wall is pretty important. You can always lean the tower outward to move the body away from the frame. You can only move it so far inward or it leans back at the top which is dumb looking and you can get into the tub if you have to lean it too far in.

Some like have been shown, have that goofy gusset. It isn't needed, has no effect on the strength of the mount and is oriented the wrong direction to be of much use. If you want to do some good out of some misguided fear that the back of the frame is going to fall off, add the same material to the inside of the frame so it sort of joggles full dimension around the back of the mount. Other than that, leave it alone and just get good welds around the cut.


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post #17 of 21 Old 04-22-2018, 10:42 AM
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One of the long-standing concerns with outboarding is compromising the rear section of the frame in the event of a collision or even while towing. I've never seen examples of this being a problem. After a decade of this mod, has anyone seen any evidence that this is an issue to consider?

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post #18 of 21 Old 04-22-2018, 11:20 AM
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Thanks!

I thought Synergy was the new branding for Poly Performance but it looks like products, even ones that appear to be exactly the same, are sold under both names still...
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post #19 of 21 Old 04-22-2018, 01:26 PM
mrblaine
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One of the long-standing concerns with outboarding is compromising the rear section of the frame in the event of a collision or even while towing. I've never seen examples of this being a problem. After a decade of this mod, has anyone seen any evidence that this is an issue to consider?

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Not a decade. I did the first one in late 99/early 2000 so almost 2 decades. I have seen pictures of one that cracked the weld. The bottom wasn't fully welded and had a sizable gap. Only incident I've ever seen and we both know that with as much as folks like to give me crap, if there were more, they'd be in every shock outboard thread.
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post #20 of 21 Old 04-22-2018, 01:35 PM
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... and we both know that with as much as folks like to give me crap, if there were more, they'd be in every shock outboard thread.
I figured as much. I know a certain fastidious engineer who recently moved out of Colorado. He once said he wouldn't help me on this install because of these concerns. I never could find any reports of failure. So I did it anyway, despite the Jeep being my daily and that it also occasionally tows a small trailer.

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post #21 of 21 Old 04-22-2018, 03:46 PM
mrblaine
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I figured as much. I know a certain fastidious engineer who recently moved out of Colorado. He once said he wouldn't help me on this install because of these concerns. I never could find any reports of failure. So I did it anyway, despite the Jeep being my daily and that it also occasionally tows a small trailer.

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He would have been the best person to understand what happens. Most forget that the tub is structural and once you tie everything together, the unitized strength is far greater than either alone. A simple FEA drawing would showed him the concerns and how to mitigate them which would be very little more than adding another vertical piece behind the mount that duplicates the removed outer wall and spanning that across the back of the shock mount.
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