GrumpyGel
Well-Known Member
They are referring to the video above (post #896) - that is not the OWUT.
You are not the first person confused by that.
Other than hooning the car in circles, the other way Bells test a VCU is on a workbench using a lever with a known weight and timing the fall. Although this is undoubtedly more accurate than the OWUT (as it takes our the variables of diff & wheel bearing drag) - the difference in accuracy is only very small and within the limits of testing. The reason most LZ members suggest doing the OWUT as opposed to Bells workbench test is that you do not have remove the VCU from the car - ie its a lot simpler.
From Bells...
You are not the first person confused by that.
Other than hooning the car in circles, the other way Bells test a VCU is on a workbench using a lever with a known weight and timing the fall. Although this is undoubtedly more accurate than the OWUT (as it takes our the variables of diff & wheel bearing drag) - the difference in accuracy is only very small and within the limits of testing. The reason most LZ members suggest doing the OWUT as opposed to Bells workbench test is that you do not have remove the VCU from the car - ie its a lot simpler.
From Bells...