dusty wrote:"Is it worth spending $100 for a set of 4 shiny, used tubes"? Not for my money. It is only worth it if you want shiny tubes. Even then, you can shine what you have to look like new.
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Welcome to the forum.
Not into shiny. Seriously into function.
And thank you for the welcome.
I fear that I might be posting quite a bit in the near future ;-(
Give a man a fish and you enslave him, teach a man to fish and you set him free.
Shopsmith Mark V, 510, Jointer, Planer and Bandsaw (SN 127932, Dec 1986, upgraded to aluminum table)
My only observation with reference to a two bearing quill has been that when I turn bowls, it is a bit more noticeable on a single there is some run out. I had new bearings in both.
The Easy Wood Tools Lathe Chisels with carbide tips made it pretty much a non-issue. Once I turned bowls with them, game over even on single bearing quills. I mean no chatter and no snags.
In my experience if the Shopsmith is properly aligned, and maintained, you will be happy with results of most everything you do with either quill. Humidity varying in the wood is going to change the wood more than a few thousandths of run out would affect it. If it is generally out of adjustment, that is different. The retaining screw on the top of the quill can be a pain if it is marginally out of adjustment. I found .010 of improvement on one machine, just adjusting that as Shopsmith recommended.
With regard to the 500 vs 510 I once found a 1981 vintage vent plate serial number on a C Series headstock with the red safety switch.
When I asked about it, it seems the fellow had gotten a bit aggressive with tightening the bolt on the eccentric and broke off one of the ears on his headstock. He bought one off eBay. Everything else came off his 1981, and was put in the C series headstock, single bearing quill and all.
As another newbie I appreciate your posts and the responses to them. i too feel like I am posting a lot but that is because we have a lot to learn I guess.
After futzing with mine and wondering the same thing about the quill I would say you have a single bearing. Mine has that center piece which allows for play in the shaft, doesn't fit tight. and it is about two inches in. I have had mine apart totally and know mine is a single bearing and yours sounds exactly like mine.
Either mine is worn out or is sloppy originally but I noticed the end play right of when using large bore spade bits and forschner bits. It wobbles plan and simple. Not much but it does. Not enough that I am rushing out and buying a two bearing but it is on my Christmas list to myself.
That is most definitely not what I have. This brings up the question why cant a bearing be added to the top of a single bearing quill and make it a two bearing quill. I am not one to try this but seems like someone would have made a kit to do this.
dsinsley wrote:That is most definitely not what I have. This brings up the question why cant a bearing be added to the top of a single bearing quill and make it a two bearing quill. I am not one to try this but seems like someone would have made a kit to do this.
Realize there is play in a bearing. Now extend the shaft the length of the quill splined shaft and you will observe considerable 'wobble'. That is why the spacer is inserted so as to roughly center the shaft in the quill body.
A second bearing eliminates the need for that 'shaft locator'.
BTW there are three different two bearing designs. The one pictured above is a two piece shaft design.
The single bearing is replaceable if it is worn. Cheaper than a two bearing quill!
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Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E[/size](SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange
This brings up the question why cant a bearing be added to the top of a single bearing quill and make it a two bearing quill. I am not one to try this but seems like someone would have made a kit to do this.