It is "common" knowledge that you should use the crimping technique moderately as it it said to be over-strenous for the pulleys. But does the have any scientific data to be backed up? Everything I can read on the internet seems to refer back to one article from 2000 - which I cannot seem to locate.
Doea any one know of any research done into this? Or should we in fact be teaching beginners to crimp from day 1?
I found this quite convincing, but it's a bit of a grind to get through. You have to start at around page 23, as the first set of slides is irrelevant to the subject, but from page 23 on, it's all meat.
I think these are lecture/recent research notes from Purdue University engineering school. https://engineering.purdue.edu/...ies_and_problems.pdf
EDIT: that page doesn't want to load right. Let me try again: https://engineering.purdue.edu/...ies_and_problems.pdf
The main problem I have with the Purdue article cited here is that the crimp that is modeled on p.28, called:
"Free Body Diagram: Crimp Grip Position"
doesn't show the hand in a position I would consider to be a "real" crimp. The cross sectional drawing shows the hand in what is still basically an open hand position. In a real crimp, the second knuckle is elevated to almost directly above the fingertip and thus much of the downward force is supported by the finger bones themselves--and not the connective tissues.
I personally find crimping to be far less damaging to my fingers than using open hand grips and the only times I have sustained pulley injuries they have resulted from open hand grips, usually when isolating one or two fingers in pockets.
this man knows. Pockets tweak people. Crimping is not so bad comparatively.