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      01-21-2012, 01:03 PM   #1
Trev
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Drives: Z4MC
Join Date: May 2010
Location: Portland Oregon

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Engineer help needed to refine Lift bar design.

Sketched up this concept of a central lift bar. Looking for engineer's to poke holes in the concept & help crystallize final design.

This idea aims solves two problems,
1. For those of us that changes wheels at track, while it is possible to lift both wheels off ground using current F/R jack points, it doesn't allow for jackstands to be make process safe. With this idea one floor jack lifts side evenly, jackstands can be slid into receptacle pockets.

2. For those of us without a lift, using two of these bars you could quickly lift car up onto jackstands.

Brief solidworks study using 2x2" square tube steel with a gusset showed a deflection of 2mm at jackpads. This is with a 4000lbs load.
If you consider 4000lbs is 20% greater than total car weight & If your only lifting one side the weight seen by bar will be upto 50% less than calculated.


Attachment 634147

Goal of this study is to create a CAD drawing for open publication to this list. If someone wants one of these made they should be able to take plans to a engineering firm Or we'll make one for them @ Time & Materials rate.

Last edited by Trev; 02-23-2013 at 12:33 AM..
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