Paulatic wrote:This study suggests
55- and 50-mm grip spans were rated as the most comfortable sizes and showed the largest grip strength (433.6 N and 430.8 N
I've only skimmed the article quickly, but my reading of it is that those results were presumably for the strongest person out of all the study subjects, e.g. as opposed to an average person. Moreover, it was based on using a 'dynamometer' which enabled optimum grip and allowed each finger to apply force independently of the others, presumably similar to the photograph of the exercise device below. Squeezing together a chain whip and adjustable spanner handle will not be like that, since the span will vary across the grip, i.e. the two handles are not parallel. Therefore if the span happens to be optimum for, say, the index finger, it is likely to be less than optimum for the other fingers.
As a thought experiment, consider the size and power of muscles used in a dumb bell pull up, and then imagine trying to lift the same dumb bell from the same starting position but with the dumb bell just resting in your fingers which you then try to squeeze into a fist in order to raise the dumb bell an inch or so. I struggle to imagine that a hand grip could lift anywhere near the same weight that can be lifted in a normal dumb bell pull up.
I guess if you wanted to find out how much force you can apply with your hand grip, you could suspend various suitable weights*, e.g. 20kg and upwards from the end of your adjustable spanner with the spanner horizontal to the ground, the chain whip slightly above, and with the lock ring already loosened.
*Alternatively use a hanging scale suspended from the spanner and fastened to a very heavy or fixed object on the ground.
Er, yeah. I've never had any difficulty removing a lock ring, and so I've never had to try to figure out what position was most effective, but the position you describe makes sense.
