A 1" Shaft diameter Pillow Block Mount Build
Posted 06 March 2013 - 08:10 PM
Posted 06 March 2013 - 08:22 PM
After reading some CN posts on pillow block bearing mounts, I decided to build one utilizing some parts from the Meade. I liked the precision shafts involved and began planning for this new unit. I began with the disassembly of the meade, and decided to make the Meade's decination axis my new mount's Right Ascension axis. The Hardin had been riding this mount.
Posted 06 March 2013 - 10:10 PM
Posted 06 March 2013 - 10:41 PM
Posted 06 March 2013 - 10:46 PM
Posted 06 March 2013 - 10:56 PM
Looks like self-aligning pillow blocks, yes?
Posted 07 March 2013 - 09:30 PM
With the four pillow blocks in hand I needed a shaft for the declination axis, and bought a 48-inch long x 1" diameter shaft from a firm called onlinemetalsupply for a price of only $13.77. My starting point to the correct length for this shaft was to work it to a shorter length depending upon what scope would be mounted up there.
Posted 07 March 2013 - 10:12 PM
In the picture, from top left to bottom right are the following parts-
Declination axis bearing plate: holds the 2 pillow block bearings and the shaft itself.
Right Ascension axis bearing plate: holds RA axis and its pillow block bearings.
Next to the cradle is a little piece of specifically cut 3/4" thick x 3" x 3"x 3" aluminum #6061 wedge. How important is this? Without it I would not be able to connect the mount to the cradle and to the pedestal base, and I cut this with my band saw.
2 pieces of 3" 1 1/2" aluminum angle.
12-2" Stainless Steel Bolts, and matching nuts. Four bolts,nuts and 2 washers each of the 3 plates.
The nylon block would serve as a declination axis slo-motion. To be cut as needed.
Posted 07 March 2013 - 10:33 PM
In the forefront, you can see that the wedge is attached to the cradle and the 2 angle pieces are joined to the base of that wedge. Four holes, two in each angle and four in the RA axis plate will allow the wedge to be mounted to the base of the Right Ascension axis assembly.
The aluminum bar is only a piece that was removed from the declination plate.
Posted 08 March 2013 - 08:00 AM
It looks like the RA shaft could use a bit o trimming. Seems a bit long. But being steel, I know it's bit discouraging.
Do you have a drive for DEC shaft too?
Posted 08 March 2013 - 09:19 AM
Posted 08 March 2013 - 11:42 AM
Posted 08 March 2013 - 09:11 PM
The Pipe Cap with the mounting wedge fits a 4" inside diameter pipe, so I searched and found a local supplier and purchased for $60.00 a section of 9 feet long 4" inside diameter x 1/4" thick section , and the two pedestals would be made from these. I needed to cut this pipe into two sections,and the company cut it into 5' and 4' lengths for easy transportation in my truck.
Posted 08 March 2013 - 09:44 PM
Having two sets of three legs from a couple of Edmund pedestals it was a simple matter to mount them to each pipe, and I replaced those wingnuts with stainless steel nuts and bolts.
Posted 09 March 2013 - 11:39 AM
Posted 09 March 2013 - 11:49 AM
Posted 09 March 2013 - 12:05 PM
Posted 09 March 2013 - 02:08 PM
Posted 09 March 2013 - 03:39 PM
Posted 09 March 2013 - 03:50 PM