I’m sorry I must have misunderstood you. I was not trying to imply that you didn’t understand torsion. When I said that I wonder if the offset between the two loops of chain would cause unwanted torsion on the sled and you said you thought “completely the opposite”…
…I (mis?)understood that as you saying that the offset would be an advantage. That concept didn’t make sense to me so I tried to explain my reasoning, it was not to specifically imply that your reasoning is incorrect.
I agree that it (torsion) does not have a big impact (that’s what I was trying to convey when I said “I’m not saying the torsion is a big problem”)
My only point in explaining the spray paint can idea is that if the attachment is on two different planes there will be torsion. Period. It might be tiny, perhaps even incalculably tiny, but the laws of physics say it will exist. I don’t see how having an offset is advantageous in this set up. I can see how it might be inconsequential but not advantageous.
Obviously I misunderstood what you were intending. I’m sorry if I sounded like I was attacking you.
As usual with everything I say, I will admit up front that I could be wrong. I don’t think I’m wrong in this but I could be, and I’ll be happy to concede when that happens. Thank you for being patient with me!