That's why I made myself a 700mm long crank extender. It's basically just a 700mm long length of box steel with a foam-lined U-section bit of steel which fits around the crank close to the bottom bracket, with a hole and a custom 9/16" bolt that goes into the pedal hole in the crank to lock it all into place. The effect is to make the cranks 700mm long and provide much more leverage. Very handy for removing cranks and crank spider lockrings when you don't have access to a sturdily mounted vice.
That's why I made myself a 700mm long crank extender. It's basically just a 700mm long length of box steel with a foam-lined U-section bit of steel which fits around the crank close to the bottom bracket, with a hole and a custom 9/16" bolt that goes into the pedal hole in the crank to lock it all into place. The effect is to make the cranks 700mm long and provide much more leverage. Very handy for removing cranks and crank spider lockrings when you don't have access to a sturdily mounted vice.
Unfortunately, it's in Switzerland.