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Yeah, I know how I would do it. In their case, they have the tool clamped in the bench vice though, so they'd need a torqe wrench that slides over the crank arm or something silly.
I don't have a bench vice so I'm a bit fucked either way.
I don't have anything study enough to bolt a bench vice too that will then take 50nm without getting destroyed
This.
I'm going to use one arm on the crankarm and then see if I can bodge the torque wrench onto my shifter (pom: adjustable wrench) and get a Nm value that way.
Or I could just take it down to Woolseys in Acton. But... faff...
hippy-
In their case, they have the tool clamped in the bench vice though, so they'd need a torqe wrench that slides over the crank arm or something silly.
I reckon they've just shown the photo of how to remove it :)
50Nm is fucking tight. I've guesstimated it before with the large park tool 'shifter' and a good chunk of my body weight. And nobody has died.
If you wanted to you could borrow my large torque wrench and maybe Bicycle Workshop's bench vice. Would mean a walk over to notting hill though.
Howard
Put some softjaws in the bench vice, clamp the crank arm with the lock-ring facing up, put the lock ring tool in place, connect a very large torque wrench, then torque to spec.
I usually do this stuff at an LBS...not because it's difficult, more because I don't have anything study enough to bolt a bench vice to that will then take 50nm without getting destroyed.
I think @dammit has used those black n decker workmate benches to do this stuff in the past though.