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Forum topic by scribble posted 10-05-2016 05:57 PM 546 views 0 times favorited 4 replies Add to Favorites Watch
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196 posts in 2350 days

10-05-2016 05:57 PM

Topic tags/keywords: question tablesaw

I have an older Craftsman full cast iron top table saw with I would guess maybe a 1 hp motor. I am wondering if it is worth while to upgrade the motor to say a 1.75 or even a 3hp. It is a belt driven unit so not sure if it would do any good or would be a waste with a belt driven assembly.

-- If you can't read it Scribble wrote it!! “Experience is merely the name men gave to their mistakes.”

4 replies so far

View MrUnix's profile


6949 posts in 2348 days

#1 posted 10-05-2016 07:35 PM

Contractor type saw with the motor hanging out the back? The motor mounts on those saws were designed for ~1-1.5hp… anything bigger and I think you might be putting more stress on it than it was designed for, both from the increased torque as well as weight (particularly if you go to 3hp). You would also need to switch it over to 240v if it’s not already wired for that, and possibly have to replace the pulley if the shaft size/mounting isn’t the same. It’s your call, but I’d save my money and just keep the motor that’s on there, tune up the saw and put a good thin kerf blade on it.


-- Brad in FL - In Dog I trust... everything else is questionable

View ocean's profile


107 posts in 982 days

#2 posted 10-05-2016 07:41 PM

I own a Craftsman TS also and I think that a much larger motor than is originally mounted (1.5) lets say 2 hp or larger would weight a lot more than the frame support is designed for and could lead to problems down the road. If everything you hear about Craftsman TS motors is to believed, the power rating is exaggerated. Regardless, I think 1.5 – 1-.75 is as big as you should go. I use the original motor and thin kerf blades without any problems. I’m know electric motor specialist but that is my thoughts.

-- Bob, FL Keys

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196 posts in 2350 days

#3 posted 10-06-2016 01:34 PM

I was just thinking that it would be worthwhile since it is bogging down excessively when cutting oak. I will try and different blade first and then determine my next router of action

-- If you can't read it Scribble wrote it!! “Experience is merely the name men gave to their mistakes.”

View Bobsboxes's profile


1369 posts in 2813 days

#4 posted 10-06-2016 02:07 PM

I also have had a couple of the craftsman saws, I put a totally enclosed 2 hp motor on the first saw. I had it wired for 120volts, the saw preformed much better. This saw was my construction site saw and was always in the weather, I used it for many years, with no problems. The stock motor are very overrated on hp, and an open frame, which allows a lot of dust and junk to get into motor, further reducing hp. When that saw wore out, I salvaged the motor and put it on another that I picked up at a garage sale.

-- Bob in Montana. Kindness is the Language the blind can see and deaf can hear. - Mark Twain

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