|Forum topic by rpete||posted 01-02-2011 08:38 AM||973 views||0 times favorited||6 replies|
01-02-2011 08:38 AM
I’ve had an old Delta Rockwell 37-110 I got from my grandpa that I haven’t really done much with. I’ve always put off doing anything with it thinking I would be getting a newer one eventually. Since “eventually” has never seemed to come around I pulled out the old jointer and have began cleaning/adjusting it and have some questions I wanted to get some input on.
I purchased a copy of the owners manual on ebay and have discovered the pulleys that are currently on the jointer are the wrong size. The pulley on the cutter head is even the wrong bore size and the set screw doesn’t hold it tight. The cutter head is supposed to spin at 4000rpm. In addition, the manual states that the jointer originally came with a 1/4 hp motor. I’m not sure if the motor I have is the original but it does have the same specs as the original. The manual also states that a larger motor can be used as long as the rpm’s stay at 4000.
As I started looking at buying new pulleys and checking out the existing motor, the thought occurred to me that I may be able to run the jointer off of the motor mounted on my craftsman table saw (an old 113.XXX model). That motor is a 1 hp and runs at 3450 rpm’s. What I want to do is get a step pulley that has a 2.5” step for the table saw (matching the existing size), and a 3.5” step for the jointer. I would then mount a 3” pulley on the cutter head of the jointer and build a mobile stand that allowed me to move the jointer in behind my table saw so I can run it off the table saw motor. With those pulley sizes I calculated the jointer operating at 4025 rpm’s.
I just wanted to put this out there to see if anyone had any input/advice/warning, etc. Is 1hp too much for this old jointer? Does the math sound right as far as pulley sizes/rpm’s? Am I crazy for wanting to do this?
Any comments would be appreciated!