Repair Or Replace Table Saw - Tools - DIY Chatroom Home Improvement Forum
Advertisement


Go Back   DIY Chatroom Home Improvement Forum > Equipment & Safety > Tools

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Like Tree6Likes
Reply
 
Thread Tools
Display Modes
Old Yesterday, 04:54 PM   #1
Member
 
Join Date: Jul 2018
Location: MICHIGAN
Posts: 72
Rewards Points: 30
Default

Repair or replace table saw


My table saw just burned up the other day. When I say burned up, in mean there was flames from the electric motor. I'm guessing that the motor might be beyond repair.
I'm wondering if it's worth it to find a replacement motor for it. The motor was a 1/3 hp 1750rpm electric motor. My uncle made the mounting brackets for the motor. I'm not sure who made the saw.
This table saw was my uncle's that I inherited after he died. My guess is that it is at least 30 years old if not more.
It does not get used much and mostly for ripping plywood. Although it came in real handy years ago for a project when I had to rip off 1/4 from about 20 2x4s.
It was a nice little saw that worked for me for over 15 years.

Is it time to retire it or should I look for a new motor?

I can get a new direct drive saw for $150.
Or I can find used older ones for $100 or less.

Sent from my Pixel 2 XL using Tapatalk
moosehaed is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old Yesterday, 05:03 PM   #2
Member
 
DerfIV's Avatar
 
Join Date: Sep 2019
Location: WV Eastern panhandle
Posts: 39
Rewards Points: 78
Default

Re: Repair or replace table saw


I'd buy a new or lightly used saw. Especially with the holidays coming up there are bound to be deals to be had on new ones. I had to make a similar decision about 20 years ago with a saw that was older than I am (I'm 69 now) when the bearings were shot and it just wasn't safe to use so I pitched it.

But, if you'd rather consider a replacement motor, check with a motor repair shop, they probably have one for sale cheap. Any reasonably sized city will have a motor shop.
SeniorSitizen likes this.
DerfIV is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old Yesterday, 05:55 PM   #3
Naildriver
 
chandler48's Avatar
 
Join Date: Jun 2017
Location: Young Harris, Georgia
Posts: 7,363
Rewards Points: 420
Default

Re: Repair or replace table saw


If you mean "direct drive" as in Ryobi, RUN. Those motors are prone to burning up too quickly to suit me. I have had a couple of them. If you can find a matching motor for your saw at a reasonable price, replacing it would be the cheapest way out. The saw you have will outlast 5 Ryobi or similar saws.

Unless you are doing it for a living, upgrading to a high end Ridgid or similar just would not make $ sense.
__________________
Larry......
Half of Communications is Listening, and You can't Listen with your Mouth.
chandler48 is online now   Reply With Quote
Sponsored Links
Advertisement
 
Old Yesterday, 06:25 PM   #4
retired framer
 
Join Date: Jun 2017
Location: Fraser Valley BC Canada
Posts: 28,036
Rewards Points: 23,962
Default

Re: Repair or replace table saw


I would just find another junk yard motor for it.
__________________
Do not use flat bottom gables with scissor trusses.
Nealtw is online now   Reply With Quote
Old Yesterday, 06:26 PM   #5
Member
 
Join Date: Jul 2018
Location: MICHIGAN
Posts: 72
Rewards Points: 30
Default

Re: Repair or replace table saw


Quote:
Originally Posted by chandler48 View Post
If you mean "direct drive" as in Ryobi, RUN. Those motors are prone to burning up too quickly to suit me. I have had a couple of them. If you can find a matching motor for your saw at a reasonable price, replacing it would be the cheapest way out. The saw you have will outlast 5 Ryobi or similar saws.

Unless you are doing it for a living, upgrading to a high end Ridgid or similar just would not make $ sense.
Not sure if direct drive is the correct term. I was referring to non belt drive saws.
I was looking at something like this or similar.

A basic low price table saw with a stand. https://www.lowes.com/pd/DELTA-ShopM...Saw/1000795558

Sent from my Pixel 2 XL using Tapatalk
moosehaed is offline   Reply With Quote
Old Yesterday, 06:34 PM   #6
Member
 
Join Date: Jul 2018
Location: MICHIGAN
Posts: 72
Rewards Points: 30
Default

Re: Repair or replace table saw


Quote:
Originally Posted by Nealtw View Post
I would just find another junk yard motor for it.
Would I have to stick with 1/3 hp or can o move up to 1/2 hp?

Sent from my Pixel 2 XL using Tapatalk
moosehaed is offline   Reply With Quote
Old Yesterday, 06:44 PM   #7
retired framer
 
Join Date: Jun 2017
Location: Fraser Valley BC Canada
Posts: 28,036
Rewards Points: 23,962
Default

Re: Repair or replace table saw


Quote:
Originally Posted by moosehaed View Post
Would I have to stick with 1/3 hp or can o move up to 1/2 hp?

Sent from my Pixel 2 XL using Tapatalk
You can go up up to 1 hp if you find one the only concern is speed, you would like to keep the speed of the blade between 3400 and 4000 rpm if the saw is 10" and you just play with the pulley size to regulate that.
Your old motor was way under powered and should have burned up years ago.
An older friend had an old saw like that with washing machine motor and when it didn't have enough power he just put a belt on a second motor the same size.
__________________
Do not use flat bottom gables with scissor trusses.
Nealtw is online now   Reply With Quote
Old Yesterday, 07:00 PM   #8
Member
 
Join Date: Oct 2008
Location: Ontario
Posts: 4,623
Rewards Points: 8,164
Default

Re: Repair or replace table saw


Thats a nice cast iron table top.

On the other hand, I don't see a fence or even mounting struts for a fence. Gotta have a fence. I would have to replace that saw just for that reason.

New saw would also have the proper safety guards.
lenaitch likes this.
SPS-1 is online now   Reply With Quote
Old Yesterday, 07:08 PM   #9
Member
 
Join Date: Jul 2018
Location: MICHIGAN
Posts: 72
Rewards Points: 30
Default

Re: Repair or replace table saw


Quote:
Originally Posted by SPS-1 View Post
Thats a nice cast iron table top.

On the other hand, I don't see a fence or even mounting struts for a fence. Gotta have a fence. I would have to replace that saw just for that reason.

New saw would also have the proper safety guards.
It has a cast iron fence.

Safety features, like guards that just get in the way? Lol. My dad would always take them off his tools.

Sent from my Pixel 2 XL using Tapatalk
moosehaed is offline   Reply With Quote
Old Yesterday, 07:13 PM   #10
Member
 
Join Date: Jul 2018
Location: MICHIGAN
Posts: 72
Rewards Points: 30
Default

Re: Repair or replace table saw


Quote:
Originally Posted by Nealtw View Post
You can go up up to 1 hp if you find one the only concern is speed, you would like to keep the speed of the blade between 3400 and 4000 rpm if the saw is 10" and you just play with the pulley size to regulate that.
Your old motor was way under powered and should have burned up years ago.
An older friend had an old saw like that with washing machine motor and when it didn't have enough power he just put a belt on a second motor the same size.
I'm sure my uncle replaced the motor some time ago. Probably that was what he had on hand.

It's a 7 1/4" saw.

Sent from my Pixel 2 XL using Tapatalk
moosehaed is offline   Reply With Quote
Old Yesterday, 07:26 PM   #11
retired framer
 
Join Date: Jun 2017
Location: Fraser Valley BC Canada
Posts: 28,036
Rewards Points: 23,962
Default

Re: Repair or replace table saw


Quote:
Originally Posted by moosehaed View Post
I'm sure my uncle replaced the motor some time ago. Probably that was what he had on hand.

It's a 7 1/4" saw.

Sent from my Pixel 2 XL using Tapatalk
The concern with the speed is the speed of sound and the speed the teeth are travelling so a smaller blade could go the same speed. That would explain the smaller motor.
__________________
Do not use flat bottom gables with scissor trusses.
Nealtw is online now   Reply With Quote
Old Yesterday, 07:33 PM   #12
retired framer
 
Join Date: Jun 2017
Location: Fraser Valley BC Canada
Posts: 28,036
Rewards Points: 23,962
Default

Re: Repair or replace table saw





https://vermontamerican.com/circular...e-speed-chart/


I was a little off, but on the safe side.
SeniorSitizen and moosehaed like this.
__________________
Do not use flat bottom gables with scissor trusses.
Nealtw is online now   Reply With Quote
Old Today, 09:32 AM   #13
Member
 
Join Date: Jul 2018
Location: MICHIGAN
Posts: 72
Rewards Points: 30
Default

Re: Repair or replace table saw


Quote:
Originally Posted by Nealtw View Post



https://vermontamerican.com/circular...e-speed-chart/


I was a little off, but on the safe side.
What's the best/easiest way to measure the rpm?

Sent from my Pixel 2 XL using Tapatalk
moosehaed is offline   Reply With Quote
Old Today, 09:41 AM   #14
Member
 
Join Date: Sep 2012
Posts: 10,575
Rewards Points: 2,148
Default

Re: Repair or replace table saw


Quote:
Originally Posted by moosehaed View Post
What's the best/easiest way to measure the rpm?

Sent from my Pixel 2 XL using Tapatalk
The formula is: drive sheave diameter X motor RPM divided by driven sheave diameter.

Example IIR correctly: 1750 RPM X 3" motor sheave divided by arbor sheave diameter of 2" = 2,625 blade RPM.
SeniorSitizen is online now   Reply With Quote
Old Today, 11:27 AM   #15
retired framer
 
Join Date: Jun 2017
Location: Fraser Valley BC Canada
Posts: 28,036
Rewards Points: 23,962
Default

Re: Repair or replace table saw


Quote:
Originally Posted by moosehaed View Post
What's the best/easiest way to measure the rpm?

Sent from my Pixel 2 XL using Tapatalk

It is the circumference you figure out


2x3.14 r=c

3 inch pulley
2x3.14x1.5 =9.42"
2" pulley

2x3.14x1=4.71"



9..42/4.71= 2

so a 2" blade pulley rpm would be 2x the 3" motor rpm.
__________________
Do not use flat bottom gables with scissor trusses.
Nealtw is online now   Reply With Quote
Sponsored Links
Advertisement
 
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Top of Page | View New Posts