New member here. I bought a Larken 24/24 back in I believe 2004(?). I must say it has performed incredibly well. My only problem is once in a while the X or Y axis will get "stuck". I have read that the machines this old had Pacific Scientific steppers that were almost under powered for the machine (100 oz-in. torque). I have two questions:
1. Does anyone have the replacement part number for the X and Y lead screw nuts? I believe Larken uses Kerk Leadscrews (Now Haydon?). I could take the nuts off and figure out the lead, etc. but I would rather order the nuts and then replace and not have to be down for a week. I think Larry has stated that he specially machines the Z nut. I really can't complain - almost 11 years and I have not changed or had to replace anything on this CNC router. (I have rebuilt 2 Bosch routers on the spindle).
2. To address the potentially under powered motors, has anyone replaced their motors? If so what brand, holding torque, phase current (amps), and voltage. I believe the motor drivers in my controller are only rated for 2 amps to drive the motors. The Pacific Scientific motors are labelled P224RHS-LNN-NS-02 with 1.8 degree step, 3.1 amp, bipolar parallel. I have great success with this machine and would like to boost the motor power without changing anything else.
At some point I know I will have to update to a windows based controller. For now I am OK with windows 98 for my controller. Any help would be greatly appreciated. Thanks.