Would this unit be stable enough to free-stand?

[JellyBelly]

Hi, Wondering if i could get some help.

I'm looking to use this structure for a window display. I have since been told I cannot fix into the floor as my math's is poor i cant calculate if this will support itself 

Structure uses standard key-clamp tube and fittings. I've got a rough calculation for the overall weight. 

Thank You

[Timothy L Dennison]

It doesnt look stable to me. You need another leg going in the other direction, at least

[JellyBelly]

8 minutes ago, Timothy L Dennison said:

It doesnt look stable to me. You need another leg going in the other direction, at least

Thanks Tim. I did think that might be the case. 

[JellyBelly]

43 minutes ago, JellyBelly said:

Thanks Tim. I did think that might be the case. 

Will this additional let be enough?

[Timothy L Dennison]

Its better, but not far enough, its not balanced.  I think you should try to make it equal distance from the center line, if possible. I dont know what limitations you are under. You could incorporate a few 45° angle braces giving it strength. From my experience in construction, you can make a wall stand in high winds with a couple 45° braces attached from the highest point possible to the floor. Very stable if you give it a wide footprint. If its not possible to add that much structure, then adding heavy weights on top of yhe feet to hold it down is an alternative