Mark V Spindle Knob

[cglace]

I recently acquired a Mark V from my father. However, the spindle knob[1] is missing from the Quill Assembly. From what I can gather you cannot purchase just the knob from the shopsmith website. Is anyone aware of another way of obtaining a replacement?


[1] https://www.shopsmith.com/service/heads ... s_list.htm Ref. 65

[benmcn]

eBay has a lot of used Shopsmith parts including rebuilt quills. I saw one listed today for around $50 plus free shipping that you could use to replace your quill, or if you want salvage the spindle knob from. I am aware of a two individuals that offer Headstock repairs (Google Jacob Anderson or Alex Smith). They might have a spindle knob from an old single bearing quill assembly if one of their customers upgraded to the double bearing quill.

[JPG]

PM me your snail Mail address and I will send you one.

[cglace]

I sent you a PM.

[JPG]

I sent you a PM.

I replied - did you get it?

[JPG]

We have been communicating by PM since the previous post.

When I first requested address I did not think about which version quill he had. As it turned out, I had old knob and he had new quill(old = single bearing/new = two bearing ).

So in the mean time I have determined a way to accommodate the difference.

I apologize, I did not keep left/right == old/new knob.

First what do they look like:

knurled collar same.jpg (808.99 KiB) Viewed 8313 times

The knurled part is the same size, but the length and inner od varies.

od.jpg (66.42 KiB) Viewed 8313 times

length.jpg (89.13 KiB) Viewed 8313 times

So to fix length add some 'washers'.

spacers.jpg (99.74 KiB) Viewed 8313 times

Two are 'standard' bushing hardware washers and are 0.070" thick. One is 'special' and is 0.030" thick(a machine bushing washer).*

length fixed.jpg (73.06 KiB) Viewed 8313 times

Now about the od add a 1 x 1/8 o ring(stretched greatly)

od fixed.jpg (66.91 KiB) Viewed 8313 times

Finally what about shaft protrusion.

shaft length.jpg (83.64 KiB) Viewed 8313 times

So why all the activity?

The purpose of the two knobs varies.

The old serves to minimize in/out play of the quill shaft.

The new serves to provide proper shaft protrusion.

The new shaft is captive so in/out play in not relevant.

Both however help prevent dust getting to the bearing.

The old quill bearing is 35 mm. The new bearing is 40 mm.

i.e. the quill bore differs so the 'inner od' of the collars is different.

None of the fixes are exact, but are IMO close enough. Low cost parts were used.

The shaft protrusion was 1.200"(new) and 1.210"(old).

So CGLACE, they will be in the mail by Friday!




* source Grainger