I would dress the gears on both flywheel ring gear and starter. When the solenoid pulls the gears into mesh, the power to the motor is the last thing applied. It should not be spinning when trying to engage. I would check the adjustment on the solenoid contacts using a meter to find at which point in the 'stroke' the juice will be applied to the starter, and if way before engagement, I think you'll have found the problem.
The nose(?) of each gear should be shaped to tend to encourage the teeth to slide past each other when the solenoid gives them a kick. Once past, then wham with the juice.
I think a Dremel type tool & abrasive bit can make them work pretty well. I have seen some really burred teeth on the ring gear, and the starter still worked.
If you can find an ring gear like yours and use that as a guide to shaping the edges of the teeth I think you'll do all right.
Worth a try rather than 'building a gantry...' and all that follows, I think.
tom
The nose(?) of each gear should be shaped to tend to encourage the teeth to slide past each other when the solenoid gives them a kick. Once past, then wham with the juice.
I think a Dremel type tool & abrasive bit can make them work pretty well. I have seen some really burred teeth on the ring gear, and the starter still worked.
If you can find an ring gear like yours and use that as a guide to shaping the edges of the teeth I think you'll do all right.
Worth a try rather than 'building a gantry...' and all that follows, I think.
tom