I recently got an SP 15 and the motor was noisy when running so I checked and no lubricant and added some, less noisy but still makes noise. Seemed like the angle of armiture the motor sits on affects sound so I fiddled with tightening and loosening the bolts on side of carriage to change [...]

I noticed that on our SP-15 the ink drum was not getting any ink on one end of the drum while inking fine on the other end. My suspicion is that the spring has weakened to the point where that end of the drum is lower. Are there other conditions we should look at which [...]

On the sp15, the motor unit and ink drum are held under the press bed within a unit mounted on two pivots. Two springs create tension on the unit enabling it to spring back up after the impression cylinder has travelled over it. What I want to know is how ‘springy’ this assembly should be [...]