Kwikstage vs cuplock vs Ringlock vs tubes and double-couplers

[mac42]

All the above systems will stay upright to some extent without bracing (yes, I know you'd be nuts to do this for anything serious).

My question is hypothetical: assuming a 6ft cube (4 uprights, 8 horizontals), which of the above systems would result in a more rigid structure assuming no bracing is used at all? I tried Chat GPT, but it just started lecturing me about bracing and then when pressed it just said 'it depends', so the usual cop-out.

I'm really wanting to hear from someone who has worked with two or more of these, and has constructed a bay without bracing and given it a shove, rather than guesses.

thanks!

 

[Alastairreid]

I've used them all and every one of them would behave the same without rakers and bracing. Tubes and fittings due to being the heaviest would fare best, ally platform the least stable.