The Hero4 underchassis mount with the new lift shackles in place (2" +- lift overall ).
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The Hero4 underchassis mount with the new lift shackles in place (2" +- lift overall ). Since they are "double-jointed", I was curious to see if the intermediate joint would move much during fairly normal driving events. There seemed to be some controversy over whether mounting the curved shackle end forward or aft would be any operation, ride comfort or safety issue. The original instructions are written in Malay, on which my knowledge level is non-existent at best, but thankfully also have line-sketches and do indeed illustrate installing them either way.
After sketching them out in AutoCAD and watching the angles changing, it appears that its actually safer to have them up front / forward as it would prevent "shackle flip" if somehow the axle drooped far enough to allow the secondary pivot to pass the primary pivot on a downswing. Unless you're running super-long stroke shocks, I can't see any way that could occur as the shock bottoming out is going to limit maximum axle droop, apparently confirming what I saw while cycling the jack. And in my particular case, the RideRite airbags also act as another axle limiter, as they have a finite stretch capability as well.
PS on 8 September 2021, I now have over 4k miles on these shackles including over 200 miles of off-road running, and no issues or contact between the unit parts themselves or any OE chassis parts. So no, mounting these "backwards" is in no wise dangerous or concerning.
PS on 18 September 2022, I now have over 11k miles on these shackles including over 300 miles of off-road running, and no issues or contact between the unit parts themselves or any OE chassis parts. So no, mounting these "backwards" is still in no wise dangerous or concerning.
PPS on 20 January 2024, I now have over 16k miles on these shackles including over 400 miles of off-road running, and no issues or contact between the unit parts themselves or any OE chassis parts. So no, mounting these "backwards" is still in no wise dangerous or concerning, I consider the issue closed.
14 июл 2021
