We have a 2' diameter earth auger that is over 7' long, about half of the length is auger flighting and the other half is shaft. It is a left over from a utility pole digging truck that no longer runs. We have a skid steer with an auger head. I would like to shorten the shaft portion of the auger to make it usable with the skid steer.
There is no point in destroying the existing auger if this modification is not likely to succeed. The hex socket, flighting, and rock teeth are in good condition. We are trying to decide whether to spend the time and money to use the one we own or just buck up and get one made for the skid steer.
Is the shaft made of anything exotic? What would be the best rod to use? I can probably add an external sleeve with through bolts which would be a bit like shear pins, but again, what size, etc?