Thanks Hu, Arvid,
You're right. I'm using rack and pinion. That motor pictured will mount nicely to the back side of the gantry and connect to the double pinion jack shaft crossing the gantry to provide drive to both sides. The linear bearings will be built high so there will be little extension of the gantry "arms". I should get 3 feet of Y travel and 3.5 feet of X travel. If need be, small ratio adjustment can be made through the connecting belt/pulley from gearhead to shaft.
Bloy |