Search found 5 matches

by almackovjak
Mon Jan 27, 2020 6:20 pm
Forum: Maintenance and Repair
Topic: Upper and lower output drive shafts slightly different sizes
Replies: 15
Views: 16057

Re: Upper and lower output drive shafts slightly different sizes

Thanks for this information. The Shopsmith site does not list the bore size on these output hubs. I called them today and they promised to get back to me. I have seen the closed output hubs, I believe designated for the lower shaft, but I have heard of those being one-half inch bore size. If, like y...
by almackovjak
Sun Jan 26, 2020 4:45 pm
Forum: Maintenance and Repair
Topic: Upper and lower output drive shafts slightly different sizes
Replies: 15
Views: 16057

Re: Upper and lower output drive shafts slightly different sizes

Thanks folks. I will speak with Shopsmith tomorrow and try to figure out a solution. I believe I need to verify the sizes of the bore on the upper and lower power coupler hubs (particularly the drive hubs having four splines) and maybe purchase a new set. You have all been very helpful, thank you.
by almackovjak
Sun Jan 26, 2020 1:21 pm
Forum: Maintenance and Repair
Topic: Upper and lower output drive shafts slightly different sizes
Replies: 15
Views: 16057

Re: Upper and lower output drive shafts slightly different sizes

Thank you JPG, I am considering how to remove material from shaft or bore of hub. Steel wool, scotchbrite, emery cloth, ream an extra hub to fit, are good ideas but how would it be done with any degree of accuracy? It seems that I would need to take the .632" shaft down to approximately .626&qu...
by almackovjak
Sat Jan 25, 2020 8:18 pm
Forum: Maintenance and Repair
Topic: Upper and lower output drive shafts slightly different sizes
Replies: 15
Views: 16057

Re: Upper and lower output drive shafts slightly different sizes

Thanks for your quick and helpful response. The lower shaft measures slightly larger than the upper one when measured with my cheap calipers. I get .626 for top shaft and .632 on the bottom shaft. I am trying to drive a jointer off the lower shaft. There are no burrs but some rust. Again, any though...
by almackovjak
Sat Jan 25, 2020 5:44 pm
Forum: Maintenance and Repair
Topic: Upper and lower output drive shafts slightly different sizes
Replies: 15
Views: 16057

Upper and lower output drive shafts slightly different sizes

Hello, I recently acquired a 1973-1974 Shopsmith and it appears that the four splined drive hub fits only the upper output shaft of the headstock. Both shafts appear to be close to the nominal 5/8" diameter with the lower one being slightly larger preventing the hub from going on. Has anyone ex...