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BeforeAndAfter
My modification of 4" Omniball caster to reduce height in foot.
Date: 07/06/2007
Owner: Monty McGraw
Views: 1047
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AfterCut
Basically, I cut off the top on my unimat mini lathe about 1" from the top surface. No need for the top bearings.
Date: 07/06/2007
Owner: Monty McGraw
Views: 1042
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BearingCupGasket2
I machined a 2" ALU bar stock into a bearing cup to mount a small flange bearing - also obtained from Outwater. Also cut a small rubber piece as a shock absorber to go between the new caster and the cup. The cup was machined for a very snug fit ins
Date: 07/06/2007
Owner: Monty McGraw
Views: 1085
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BearingCupGasketAssembled
And here is the whole assembly. Drilled and tapped three holes in the nylon caster to hold it tight.
Date: 07/06/2007
Owner: Monty McGraw
Views: 1005
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InsideView
Inside view, ball caster is secured by 3/4" bolts through the nylon housing, through the cup, almost touching the ball caster, but allowing slight play - also allows rubber shock absorber to work
Date: 07/06/2007
Owner: Monty McGraw
Views: 1039
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SideView
View from the side. I designed the cup to hold the small ball caster at the same height as the original swivel bearings.
Date: 07/06/2007
Owner: Monty McGraw
Views: 988
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TopView
Here is the view of the top of the modified 4" Omniball. I then tapped three holes in the cup and mounted it to the plate that was then tapped and bolted to the foot channel.
Date: 07/06/2007
Owner: Monty McGraw
Views: 973
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AssembledFootDrive3
Assembled foot drive. The 4" Omniball now fits exactly same height as the 4" drive wheel in the front of each side foot - and is perfectly vertical.
Date: 07/06/2007
Owner: Monty McGraw
Views: 1165
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AssembledFootDrive2
Side view of side foot with Kelly Krider ALU foot shell.
Date: 07/06/2007
Owner: Monty McGraw
Views: 1092
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