Interesting idea for the Model 10's.
For those wanting a double tilt Mark 2 there is a different way than building a wood "Mark VII" bench as shown in the article. We had a discussion about this a while back.https://www.shopsmith.com/ss_forum/beginning-woodworking-f6/just-bought-a-mark-2-t21811-s10.html
It requires getting a second headrest end to replace the base/arm side and shorting the way tubes 3-1/2" to move the headrest end inward to the same distance from the end of the bench as the base end. For those with wood bench "tubes" you can replace the wood with 3-1/2" longer stock to move the bench end out so it the same on both ends. It will than work similar to the new Mark 7 for double tilt.
You are correct, I misread the owners manual, it is 6800 with the SC.
Yes, the highest speed without a speed changer, a different RPM motor or changing pulleys is 3450 RPM's or double the motor speed. Below is a PDF of the 7 speeds with the stock pulleys for the Model 10's. EDIT: This is a chart I created a while back. It uses the same idea as the Mark 2 for different speeds by changing the pulley match-ups.
Last edited by chapmanruss on Tue Apr 16, 2019 12:05 pm, edited 1 time in total.
Mark V 520 S/N 09-11-01 completely upgraded to Mark 7, with all SPT's & more.
Model 10ER S/N R64000 first one I restored on bench w/ Shopsmith 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/ Shopsmith metal ends & retractable casters.