Discussion: Bar weight

I've been trying to work out how to weigh our bars. The old style varied, but these are all the same. Are yours the Les Mills silver ones with roughened hand areas? Red ends?

Yes.
Les Mills with red ends and locking jaws that hold 3 weights. The plates weigh a bit more than stated in the label as well. Ie 10 kg was 10.4 kg when measured.
They have a set of scales (for people) right outside the class room so I just stood it up on there (balanced bar upright with one finger so as to not take any load on the scale).

And since in the past you like technical terms .... The roughened hand areas ..... Is called "knurling" ;-P.
Knurling is achieved in a lathe and is a process which doesn't actually cut the metal away but distorts the surface into a series of peaks and valleys.
High school metalwork classes ;-)

THANK YOU for that new word! And yes I do like to know technical terms.
The scales for us are in the change rooms and it would look very suspicious if I took a bar that far away. A guess - but it should have been accounted for - would the extra 400g be the 'rubber' exterior? So the actual weight is the requisite weight (OK I have to say it - mass).
Technique for weighing - you should have got on the scales with weight then without. That's how we do the worm doses for the cat apparently. (Junior's cat that weighs 7kg!!!)

The mass may vary a bit. I didn't do a detailed variation study :-P
I know the old ones we had which were basically a plastic shell with plaster poured inside .... cracked and gradually turned to dust so leaked out and got progressively lighter.
These new Les Mills solid ones don't appear to have that problem.

But they can be verryyy annoying when trying to get weights off in between tracks - quickly.

It is still better than the alternative of the weights coming off very quickly in a totally unplanned fashion with the old lock collar approach.
Lost count of the number of times I have seen peoples weights fall off.

And dangerous if during chest track!