Shopsmith Forums

In his proximity detection video, he alludes to possible damage from triggering it too frequently. I'd assume he is using some type of DC injection braking, which does generate heat.

I have not seen any mention of the possibility of the flywheel effect of the blade causing the retaining nut to loosen from the sudden stop of the shaft and allowing the blade to keep spinning loosely on the arbor from its own momentum...
It might require an arbor redesign to be able to lock it.


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robinson46176 wrote:I have not seen any mention of the possibility of the flywheel effect of the blade causing the retaining nut to loosen from the sudden stop of the shaft and allowing the blade to keep spinning loosely on the arbor from its own momentum...
It might require an arbor redesign to be able to lock it.


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You mean . . . like . . . uh . . . er . . . the . . Powerpro?:D

JPG40504 wrote:You mean . . . like . . . uh . . . er . . . the . . Powerpro?:D

Not that familiar with that aspect of the PP...
I decided that now was not the time and just sort of quit looking at it much. Too many other places I want / need to put $ $$,$$$.¢¢ right now.

I once saw a classmate in metal shop flip the switch from forward to reverse quickly without having a big 12" chuck tight enough and it spun off and rolled across the floor.
It made a lot of noise when it hit the floor (missed everybody). Woke a bunch of guys up.


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robinson46176 wrote:Not that familiar with that aspect of the PP...
I decided that now was not the time and just sort of quit looking at it much. Too many other places I want / need to put $ $$,$$$.¢¢ right now.

I once saw a classmate in metal shop flip the switch from forward to reverse quickly without having a big 12" chuck tight enough and it spun off and rolled across the floor.
It made a lot of noise when it hit the floor (missed everybody). Woke a bunch of guys up.


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There have been some posts describing saw blades continuing to spin after the PP stops. The result of braking action of the PP and loose screws etc.

JPG40504 wrote:There have been some posts describing saw blades continuing to spin after the PP stops. The result of braking action of the PP and loose screws etc.

I found the use of 1 ot 3 additional set screws took care of any arbor becoming loose. I have used a set screw in the older arbor nut. They make many sizes and lengths of set screws for this purpose. I only used added set screws when I saw that I have a problem, not before. Many arbors have no problems. I have became a firm user of blue LocTite when in doubt.