07-07-2014, 10:38 PM
Was going to throw this in the alligator build thread but thought it might be better here.
Looking at possibilities for bearings on the shaft that supports the paddles on a paddle wheel boat. Im thinking of using something like 2 1/2 inch heavy wall pipe (will fit through the headstock on the lathe). Its a relatively low torque load over a long shaft (about 8 feet between the bearings). Expect something in the order of 200 rpm. Roller or ball bearings would work but 3 inch bore bearings get pricy unless of the oriental flavour and Im not going there.
What about welding up a split pillow block with cavities for felt seals and pouring a lead based babit bearing?
I poured some decades ago in the steel mils during a summer job as a millwright helper but thats about it.
Does the shaft have to be particularly hard or should regular pipe work? What about surface finish?
Thoughts and comments welcomed and appreciated, except for thinking Im crazy, that goes without saying or discussion.
Thanks
Looking at possibilities for bearings on the shaft that supports the paddles on a paddle wheel boat. Im thinking of using something like 2 1/2 inch heavy wall pipe (will fit through the headstock on the lathe). Its a relatively low torque load over a long shaft (about 8 feet between the bearings). Expect something in the order of 200 rpm. Roller or ball bearings would work but 3 inch bore bearings get pricy unless of the oriental flavour and Im not going there.
What about welding up a split pillow block with cavities for felt seals and pouring a lead based babit bearing?
I poured some decades ago in the steel mils during a summer job as a millwright helper but thats about it.
Does the shaft have to be particularly hard or should regular pipe work? What about surface finish?
Thoughts and comments welcomed and appreciated, except for thinking Im crazy, that goes without saying or discussion.
Thanks
Free advice is worth exactly what you payed for it.
Greg
Greg