On Thu, 10 Aug 2017 18:49:23 -0700 (PDT), DerbyDad03
wrote:

On Thursday, August 10, 2017 at 9:34:01 PM UTC-4, Meanie wrote:
On 8/10/2017 7:18 PM, DerbyDad03 wrote:
I'm not looking to start another discussion related to the proper techniques for
jacking up and supporting a vehicle. That subject has been discussed ad nauseam.

My question is quite simple: Would you feel safe working under a vehicle that was
supported by either of these jack stands, assuming of course that you stayed
within the 2 ton rating of the device.

Based on the date that this first video was published, I think this is the newest
version of the RennStand.

Video Published on May 10, 2017
https://youtu.be/yqXIrSVQ3ts

The following appears to be an earlier version of the RennStand, based on the
date that the video was published:

Video Published on Oct 13, 2016
https://youtu.be/tfk5UF7rbuM

Maybe it's just me, but both the angled welds and the curved sections of the
support bars seem like dangerous points of failure.


If I had to compare it to architectural designing, the arch support
entryway is stronger than the basic square (90 degree) entryway.

But most arch support entryways don't have 4 welds as possible points of
failure. It's not the arch shape that bothers me, it's the welds.

The
same for arch bridges. The weight is distributed more evenly in all
angles than compared to all the weight at the ell angle.

I would use it but I prefer the the conventional jack stands.


Architectural arches are often made of MANY parts - tied together with
lime cement (mortar)
A GOOD weld doesn't scare me.