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An old jointer on a SS 7 w/Power Pro - RPM?

#273447 by poihths » Thu Aug 20, 2020 4:52 pm

I have a Shopsmith mark 7 with the power pro head. A friend of mine who unfortunately is having to stop woodworking just gave me his Shopsmith jointer. It's an old unit -- I'm not sure how old, but much much older than the mark 7. it's in good shape – he takes meticulous care of his tools.

It hooks up to the high speed spindle on the mark 7. Does the power pro speed chart understand the difference between the regular spindle and the high speed spindle and adjust its numbers accordingly? It comes up with 3450 for narrow stock and 3500 for wide stock. If those numbers apply to the regular spindle, the high speed spindle will be at 5520 and 5600. Does that make sense?

Are there any booby traps I need to watch out for?

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Re: An old jointer on a SS 7 w/Power Pro - RPM?

#273448 by jsburger » Thu Aug 20, 2020 4:59 pm

All SS head stocks have a high speed spindle. Well not the Model 10 but all MK-5/V's. The jointer has always connected to the high speed spindle. The Power Pro is correct. Just connect the jointer and go.

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John & Mary Burger
Eagle's Lair Woodshop
Hooper, UT

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Re: An old jointer on a SS 7 w/Power Pro - RPM?

#273469 by chapmanruss » Fri Aug 21, 2020 1:33 pm

John is correct. I used my Jointer, an upgraded one made in 1979, earlier this week on my Power Pro headstock using the preset speed. Worked like a dream just as it should. So enjoy your new to you Jointer. I'm sure you will like having it in your tool collection.

The upgrades on mine include the dust chute with the safety covers and the feather guard retrofit which were not available for it when it was new.

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Russ

Mark V completely upgraded to Mark 7
Mark V 520
All SPT's & 2 Power Stations
Model 10ER S/N R64000 first one I restored on bench w/ metal ends & retractable casters. Has Speed Changer, Model 4E Jointer, Jig Saw with lamp, a complete set of original accessories & much more.
Model 10E S/N 1077 oldest one I have restored. On bench w/ metal ends & retractable casters.

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Re: An old jointer on a SS 7 w/Power Pro - RPM?

#273472 by JPG » Fri Aug 21, 2020 2:30 pm

5.5 K is a good jointer speed.

Watch out for the spinning knives!!!

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╟JPG ╢
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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(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

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Re: An old jointer on a SS 7 w/Power Pro - RPM?

#273494 by poihths » Sat Aug 22, 2020 8:17 am

Thanks a ton, everybody!

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