Replies

1. 
   RickL | Jun 16, 2005 09:18pm | #1

   Don't think you will  gain a lot. Keep in mind the 2 hp should be of the same frame size or it will be too big for the saw. Do you use a dedicated rip blade at all? Less teeth require less power and that would be the typical way to deal with the power difference of a cabinet saw versus a contractor saw. A good rip blade will go through 8/4 oak easily. Too many folks try to use a combo blade for ripping and don't realize what less teeth means in the power factor.

1. 
   MiKro | Jun 16, 2005 10:30pm | #2

   Thanks Rick,

   sounds like your vote is $60+ saved.

   I appreciate the input. I am aware of the frame size also. It uses a 56frame

    Yes, I use dedicated blades for ripping and such, I prefer Forrest and Freud blades. Not even sure I still have a combo blade anywhere except on the circ saw, LOL! 

   We'll see what the vote Tally is after while. But I suspect that you are correct in not seeing that much gain.

   Thanks again,

   Mike K

    

1. 
   jackplane | Jun 17, 2005 03:40pm | #3

   Horsepower rating on a motor is actually a vague determination of power. Different makes boast different hp. It's better to check the stated amperage on the motor plate.

   When you say the motor's dead, I guess you've had it checked via a motor shop or electrician to make sure there's not an easy fix. 

1. 
   MiKro | Jun 17, 2005 03:58pm | #4

   Thanks for the reply JP,

   The motor appears to have a break in the windings and thanks for the heads up on amperage vs HP ratings.

   mk

1. 
   maddog3 | Jun 17, 2005 05:22pm | #5

   I am sure you know this ,but JIC, don't forget RPMs and rotation

2. 
   MiKro | Jun 17, 2005 06:24pm | #7

   Got that! thx

   mk

2. 
   KeithNewton | Jun 17, 2005 05:55pm | #6

   I put a 2 HP on my little job-site saw, and always run it on 220 VAC. If you making your living with this saw, I think you should add the power.

   If you find you need to do lots of heavy ripping, another thing that will add torque is to reduce the size of the blade.

1. 
   MiKro | Jun 17, 2005 06:27pm | #8

   Thx Rootburl,

   I thought about the 220 also. Thanks for bringing it up. Was looking at a 110/220 motor already.

   MK

1. 
   HowardAcheson | Jun 17, 2005 07:18pm | #9

   Couple of things to keep in mind.

   Delta sells a motor that they use on their current top of the line contractor saws.  It is rated at 1.5 hp on 120 volts and 2.0 hp on 240 volts.  The motor is basically a 2.0 hp motor which is "derated" to reduce the amperage when wired for 120 volts.  It will bolt directly onto the current mounting spot. 

   A standard 120/240 volt motor produces the exact same horsepower when wired for either voltage.

   The basic issues with changing motors is overall size, relation of frame mounting to pulley position and weight.Howie.........

3. 
   WayneL5 | Jun 18, 2005 07:30am | #10

   A 2 hp motor can draw more power, possibly taking you to a larger circuit requirement.

   The other post about paying more attention to amperage than power to determine the capability of the motor is exactly wrong.  Amperage is how much current the motor draws, power is the rate of work it puts out.  A low efficiency motor, such as a 65% efficient motor will use much more current to produce a given amount of power than a high efficiency, say 92%, motor will.  So if you think a motor is better because it draws more current you'll end up buying the worst motor and the most expensive to run.

   Some tool manufacturers have lied about the horsepower of their tool motors and have been in legal trouble over it.  That has caused some to be skeptical of claims.  But they could just as well lied about voltage, current, efficiency, or any other feature.  If a manufacturer is dishonest you can't make a decision based on any figures.  If the data are honest, though, then all motors rated at a give horsepower put out the same power.

4. 
   Telemike | Jun 18, 2005 07:49am | #11

   A while ago, I replaced the sears 1 hp motor on my older sears 10" table saw with a baldor 1 1/2 hp TEFC motor that I stumbled onto cheap. It cut much more strongly and didn't overheat so much.

   However, it weighed almost twice as much as the old sears motor and cocked the trunions when I tried to tilt the blade. The saw cut great, but only at 90 deg to the table. If I tilted it, it would get progressively out of alignment to the mitre slot because the heavy motor didn't balance out the arbor.

   My suggestion is that you replace the motor with the most powerful one you can without getting a heavier motor and without getting one where the frame doesn't fit the mount.

5. 
   maddog3 | Jun 19, 2005 12:51am | #12

   also, check the service factor, and get at least the same or larger. If your motor is a 1.0 try a 1.15 , it will take the occasional extra loading better. just be sure you protect the saw for FL amps and not SF amps

   I am not sure, but the switch may have to be changed as well !

   maddog

1. 
   nikkiwood | Jun 19, 2005 05:34am | #13

   I'm assuming that the 2 HP motor is an option from Delta. You certainly do not want to use a motor larger (or heavier) than whatever is recommeded by Delta. I am not certain, but I think any motor larger than 1 1/2 HP will require a 220v circuit.As far as the cutting power between a 1 1/2 HP and a 2 HP is concerned, I think the difference would be negligible.********************************************************
   "I tend to live in the past because most of my life is there."
   -- Herb Caen (1916-1997)

6. 
   none | Jun 20, 2005 04:14am | #14

   First have a local electric motor shop look at it and give you an estimate on rebuild. Northern Tool.com has both a 1 1/2 & 2.0 HP 3450 TEFC 56 frame, revesable motor for $137.99 & $152.99 respectively. Originally built for pressure washers. Item # 22108-2406 (1 1/2 HP) and #22109-2406 (2.0HP) These are either Century or Magtek brand motors, both made in USA. Capacitor start, capacitor run-more efficent than old motor.These are good motors, and probably a lot cheaper than Delta replacement motor. Currently I have a 2.0HP century on my Rockwell TS. It is there because I had it on hand.

1. 
   MiKro | Jun 20, 2005 04:47pm | #15

   Wow,

   What a great bunch of responses! Thanks to all of you for your input and knowledge. The main reason for my question was due to the fact that Delta does have the 2 hp motor that will fit my saw.

   It appears from discussion that if I go with the Delta motor and change to 220 volts I may see some improvement in cutting efficiency and maybe not. I could go with a less expensive alternative by using another manufactures motor but I think I would be better served staying with the Delta since the mount is already attached.  So I believe that I will get the 2 hp Delta and switch to 220 volts and see what happens?

   I'll let ya'll know what the outcome is after a few weeks of use.

   Thank you all again,

   Mike K

1. 
   maddog3 | Jun 20, 2005 05:21pm | #17

   you are welcome!

7. 
   desertrat | Jun 20, 2005 05:02pm | #16

   I put a 3hp on my Delta Contractors saw and love it.  Was able to get the same frame etc. and it works great especially with the right rip blade.

   I only paid about $165 for mine about 4 years ago.  Runs on 220v