10 inch Refractor Renovation - Al-Paslow
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Here's the housing that contains the Dec. shaft.
The design here is flawed in theory. It uses two taper roller bearings at each end of the shaft. That is good. The bad is the bearings are the same size. So if the bearings are the same size they can not be press fitted on the shaft for assembly purposes. Therefore there must be some play between the bearings and shaft - THAT IS BAD!

If the front bearing would have been made smaller the bearing race could then be reversed and the entire shaft with bearings" pressed fitted" in place could have slid down into the housing you see here. The results would be tight and not sloppy.

There is excessive clearances here to be a precision device.

Here's the housing that contains the Dec. shaft.
The design here is flawed in theory. It uses two taper roller bearings at each end of the shaft. That is good. The bad is the bearings are the same size. So if the bearings are the same size they can not be press fitted on the shaft for assembly purposes. Therefore there must be some play between the bearings and shaft - THAT IS BAD!

If the front bearing would have been made smaller the bearing race could then be reversed and the entire shaft with bearings" pressed fitted" in place could have slid down into the housing you see here. The results would be tight and not sloppy.

There is excessive clearances here to be a precision device.

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