Rebuild on an #R69S pressfit crankshaft at #ScottiesWorkshop - The nose of the crank is held in inverted v-blocks on the #granite #surfaceplate while the rear of the crankshaft is suspended without support. In this step, the front and middle webs have already been aligned with help from #Pythagorus. Now the position of the rear web can be accurately determined by #metrology and efficiently corrected in as few steps as possible. #BarPuzzles @starrett_tools #PrecisionMachineShop #bmwvintage #vintagebmwmmotorcycles #crankshaftrebuilding #machineshop #bmwmotorrad

via Instagram https://instagr.am/p/CGNeTzch-lg/