Mark Bolton
12-23-2008, 9:01 PM
We have an 8" jointer that a guy dropped of at our shop some time ago. I call it the frankenjointer because the head and tables have been bolted to a homemade angle iron frame, it had a 3/4HP motor attached to the angle iron frame with a single V belt about 2 sizes too long running from the motor to the cutter shaft. The slack in this belt allowed the motor to slip until the head came up to speed. Surprisingly it worked pretty well. I thought it would lose a lot of RPM when feeding a board but it didnt.
It has been parked for a while but I am in the process of fabricating a new enclosed stand for the jointer and refurbishing it. It has very short tables, no longer than a typical 6" (Jet, Rikon, Delta) with a simple but decent fence. I am not sure how smooth I will be able to get the table adjust but even if I can get this thing runnning and dialed in to 1/32" and lock it it would be a handy addition to the shop.
Question, do I really need something like a 3HP motor on this jointer for light passes like 1/32"? Could I get away with a 1 1/2 or 2 HP? Also, it seems cutter head speeds of 5K+ RPMs what I should shoot for, thoughts? I had thought of switching to a double sheave on the motor and cutter as long as I have enough shaft on the cutter. I havent checked the tail length on the cutter shaft.
I was thinking a 3450RPM motor with 1:1.5 ratio up giving me 5175RPM if thats an appropriate speed.
Thanks for any input,
Mark
It has been parked for a while but I am in the process of fabricating a new enclosed stand for the jointer and refurbishing it. It has very short tables, no longer than a typical 6" (Jet, Rikon, Delta) with a simple but decent fence. I am not sure how smooth I will be able to get the table adjust but even if I can get this thing runnning and dialed in to 1/32" and lock it it would be a handy addition to the shop.
Question, do I really need something like a 3HP motor on this jointer for light passes like 1/32"? Could I get away with a 1 1/2 or 2 HP? Also, it seems cutter head speeds of 5K+ RPMs what I should shoot for, thoughts? I had thought of switching to a double sheave on the motor and cutter as long as I have enough shaft on the cutter. I havent checked the tail length on the cutter shaft.
I was thinking a 3450RPM motor with 1:1.5 ratio up giving me 5175RPM if thats an appropriate speed.
Thanks for any input,
Mark