Shopsmith Newbie - Drill Press not Vertical?

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BuckeyeDennis
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Re: Shopsmith Newbie - Drill Press not Vertical?

Post by BuckeyeDennis »

JPG wrote:Apparently it needs to be repeated that it is intentionally NOT 90°.

It is stopped slightly over the top so it tends to fall towards the table side. The lock screw and dimple add to the resistance to falling 'back' to horizontal.

Yes the important thing re alignment is the table be 90° to the spindle. The angle of the way tubes relative to the bench tubes/floor/... does not alter that.
I'm not convinced, Red. It seems to me that the important thing is that the center of gravity of the pivoting assembly goes over-center of the base-arm pivot. I dunno where the CG of the headstock is, but the base arm itself has an offset that shifts the way tubes (and everything on them) about 5 inches outboard when in drill-press orientation. Even if the CG is way up high, say 3 feet above the pivot, and in the plane of the way tubes, that 5 inch offset puts the CG about eight degrees over center, when the way tubes are at true vertical.
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JPG
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Re: Shopsmith Newbie - Drill Press not Vertical?

Post by JPG »

BuckeyeDennis wrote:
JPG wrote:Apparently it needs to be repeated that it is intentionally NOT 90°.

It is stopped slightly over the top so it tends to fall towards the table side. The lock screw and dimple add to the resistance to falling 'back' to horizontal.

Yes the important thing re alignment is the table be 90° to the spindle. The angle of the way tubes relative to the bench tubes/floor/... does not alter that.
I'm not convinced, Red. It seems to me that the important thing is that the center of gravity of the pivoting assembly goes over-center of the base-arm pivot. I dunno where the CG of the headstock is, but the base arm itself has an offset that shifts the way tubes (and everything on them) about 5 inches outboard when in drill-press orientation. Even if the CG is way up high, say 3 feet above the pivot, and in the plane of the way tubes, that 5 inch offset puts the CG about eight degrees over center, when the way tubes are at true vertical.
You make excellent points re c/g. Make some measurements to become 'convinced' it ain't vertical. ;)
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