alan tani @ alantani.com fishing reel repair rebuild tutorial Slowing down bench grinder
Reel Repair by Alan Tani
August 02, 2021, 04:59:45 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
 
   Home   Help Search Login Register  
Pages: [1]   Go Down
  Print  
Author Topic: Slowing down bench grinder  (Read 362 times)
0 Members and 1 Guest are viewing this topic.
Gobi King
Administrator
Member
*****
Offline Offline

Posts: 1574



« on: July 19, 2021, 02:25:27 PM »


I have an elcheapo bench grinder, how do I slow it down?

For my dc trolling motor, I use an inline PWM controller to control the speed.

What do you guys use for a/c motors to slow em down?

Logged

Shibs - aka The Gobi King
Fichigan
Wompus Cat
ENTREMANURE DAS GROSEN
Sensei
Member
***
Online Online

Posts: 684


REEL WHISPERER


WWW
« Reply #1 on: July 19, 2021, 03:20:59 PM »

Well that's a Color of a Different Horse as some motors can not be (turned down by reducing Voltage ) it will burn the Windings  HOWEVER depending on the Motor you have there are a few options .

They make Step Controllers for this too.
My Router has  one . I will take a peak at the particulars on it and get back .
Meanwhile get the info off your motor plate if you can .
 
Logged

EVERYTHING TO EXCESS !
MODERATION IS FOR MONKS
foakes
Moderator
Member
****
Offline Offline

Posts: 7539


Sierra National Forest


« Reply #2 on: July 19, 2021, 04:02:46 PM »

For my outer shop stationary grinder, I have a dual head single speed unit.

For the upstairs shop, directly to the right of my stool I have (3) grinders.

(2) are Mini-Grinders with a total of (4) 3” heads — fine wire, grinding stone, burnishing stone, fine grinding stone.

The larger Craftsman has (2) 6” heads — buffer and a wire wheel.

These are all hard mounted and accessible just by swiveling my stool — and they are far enough away from the bench so as to not throw dust or crud on the reel work.  They are all hard mounted on a rolling bottom toolbox — at bench level.

And all three have variable speed controls built in to the units — quick, easy, accessible, no fiddling with extra loose wiring, or taking a chance on heating up or ruining a motor not designed for variable speed work.

I keep a pair of safety glasses, clean and on top of the first grinder — and another backup pair on the reel bench pegboard to my lower left.  These are the types of safety glasses that go over my reading glasses — and have good side protection also.

Best, Fred


* 0920C38F-C892-435D-94DE-C018313F907B.jpeg (439.06 KB, 1280x960 - viewed 37 times.)

* B3A6908D-C9F9-46C7-AE17-E6A9ACCC59CA.jpeg (414.96 KB, 1280x960 - viewed 34 times.)

* 15CE45EB-E3C5-4779-A9B5-2367FDFA0BE9.jpeg (360.18 KB, 1280x960 - viewed 36 times.)

* 643C5B6D-3FEC-4EAC-91EC-1ED76D6A0EE0.jpeg (374.15 KB, 1280x960 - viewed 32 times.)

* 74257655-B8FF-465A-A6B0-61021C49CA04.jpeg (369.18 KB, 1280x960 - viewed 38 times.)

* 52958D1D-89B6-46D2-B09F-42EF9D397218.jpeg (346.25 KB, 1280x960 - viewed 34 times.)
« Last Edit: July 19, 2021, 04:56:35 PM by foakes » Logged

The Official, Un-Authorized Service and Restoration Center for quality vintage spinning reels.

D-A-M Quick, Penn, Mitchell, and ABU/Zebco Cardinals

---------

EVERYTHING is available if I have it —

I’m not striving to be the guy with the most parts in the graveyard
Tiddlerbasher
Photo Group
Member
**
Offline Offline

Posts: 3221



« Reply #3 on: July 19, 2021, 07:00:00 PM »

For my linisher, bench grinder/polisher, pillar drill, etc induction motor driven things I use something similar to this:

https://www.ebay.co.uk/itm/174822234137?_trkparms=ispr%3D1&hash=item28b4379819:g:9EcAAOSwT5tg3V60&amdata=enc%3AAQAGAAACwPYe5NmHp%252B2JMhMi7yxGiTJkPrKr5t53CooMSQt2orsSDAeS9EQtjPGVfKXTxF0%252BjhEz5RdsnkPWzgHFJd3csHALhoDufUNmmFQAdBqiMJOP%252BGSvv6uRFjpk82Bm%252FW5v%252B83lAr0tfJ10IPZ7GhvNEoUx6R%252BTFTknxSB3ARLX8w7a25NygyxDvEeGTV4LLu3AXy%252BJJY674sWecmdwAzmqt9N2eIgumosPQJdAJgubs5GvPl7D38856nLh3TwlxZBcFGBNxc%252F%252BcCGu8wTYNseVKTIhXFzO9aUl1i5IOksc%252FwcLXrLXjv4jt1FB9%252B0PBMOMQb2GySlXFBn35BCCtHt9Ydqf3UsMQ%252FQ88lA1%252BdidEv915Udf%252B4uUOTyffwTUumVbB7PCerv8rwIUJo3Vn%252FOvnKIhreF8QdBrpAzBpMIqHoWe4KvpOMao8MP2nHtIBs%252Buv0pj5UeY2uwrPL0yPdICeVAp3tiN80qT9aPklh3JwkydUeajj65tdUP%252Bon8bzpmjAiT2zOWysqsx8SYrZnAYZEmN56m%252Fwrh6Dwu%252BTlnOg6%252BeVRCyGLhd8apBVvOcgOW6nSsbyA39bxv2G5A99BZqV0ttDm9NkGm7G06fX6ws6qZcUZoTnJlM4rVopmYCRwM82hg%252BF%252FgOsmQRxE2VX9x4s%252BUcFIU%252FNXEUMZ8aQiGDX2eCq0IWSkhVmgj1%252FN4lGzPYT0iJddS4nPV4ni9gQEl4V0LqaQ267H25dES44yjGzB4s6OX9oxcsKbzDZf%252FcV1Kkgiq0kd8YO8XX2mjX%252FlFEY66vxOD9e9r2EFQvbwjD7HYrRJzwE6IgS%252BoAtf%252B5oj3atdqpyUX2sYzEVNtDzj%252FYkLDQnaRw9EBzeOZLWrYQVEOmnZ8X8Aech0SMyqklwyqfM0vg9mrciqdZERbPsXjxx4BTkDU%252Bz6aOpcJS6EcjFF1n%7Campid%3APL_CLK%7Cclp%3A2334524

I didn't buy this particular one, but they are all similar Smiley
I just used it in single phase mode - they can convert single to three phase if needed.

These things really work well Smiley There really isn't an alternative type of device! My one has been in service for a few years with no issues Smiley
Wire it for a mains plug input - fit an appropriate mains socket output - you can then use it for any induction motor device (just allow for power requirements Wink)
Logged
Keta
D'oh!
Moderator
Member
****
Online Online

Posts: 9423


Klamath Falls, OR US


« Reply #4 on: July 19, 2021, 09:41:58 PM »

I don't like the single phase/3 phase motor speed controllers, what I have installed on the header drive motors of the algae harvesters are below.  They plug in in between your power source and your load with standard 3 prong 120v plugs.


https://www.walkerindustrial.com/Dart-Controls-55AC15E-p/55AC15E.htm?gsn&gclid=Cj0KCQjwxdSHBhCdARIsAG6zhlUXpfS8IgVuafRWGQs2mV3hnsCqSH-wrlf3UFZquzkhnY1oyJN9V7oaAo9AEALw_wcB
« Last Edit: July 19, 2021, 09:46:05 PM by Keta » Logged

Hi, my name is Lee and I have a fishing gear problem.
A man who carries a cat by the tail learns something he can learn in no other way.
Mark Twain
thrasher
Member
*
Online Online

Posts: 103


« Reply #5 on: July 19, 2021, 09:44:15 PM »

https://www.harborfreight.com/router-speed-control-43060.html

Logged
Keta
D'oh!
Moderator
Member
****
Online Online

Posts: 9423


Klamath Falls, OR US


« Reply #6 on: July 19, 2021, 09:47:27 PM »

The Harbor Freight one will work if the amp load is 8A or less., it says 15A on the controller but in the specs it says 8A.

" Plug any router into the control unit and get instant variable-speed control.  Works with any universal AC/DC brush type motor, 8 amps and under"

Check the amp load on your bench grinder.

 $180 v $18 is a lot of $ and if the HF one does not work it is no big loss.
« Last Edit: July 19, 2021, 09:55:13 PM by Keta » Logged

Hi, my name is Lee and I have a fishing gear problem.
A man who carries a cat by the tail learns something he can learn in no other way.
Mark Twain
Keta
D'oh!
Moderator
Member
****
Online Online

Posts: 9423


Klamath Falls, OR US


« Reply #7 on: July 19, 2021, 09:57:46 PM »

I try to not do Amazon but sometimes it can not be avoided, this one will work for up to 15A and under $26.00.

https://www.amazon.com/Universal-Variable-Voltage-Control-Controller/dp/B01M1I4NLX
Logged

Hi, my name is Lee and I have a fishing gear problem.
A man who carries a cat by the tail learns something he can learn in no other way.
Mark Twain
Gobi King
Administrator
Member
*****
Offline Offline

Posts: 1574



« Reply #8 on: July 20, 2021, 07:34:27 PM »

Well that's a Color of a Different Horse as some motors can not be (turned down by reducing Voltage ) it will burn the Windings  HOWEVER depending on the Motor you have there are a few options .

They make Step Controllers for this too.
My Router has  one . I will take a peak at the particulars on it and get back .
Meanwhile get the info off your motor plate if you can .
 

Yes, me do not want to burn the winding!
Pic of spec coming soon. Thanks,
Logged

Shibs - aka The Gobi King
Fichigan
Gobi King
Administrator
Member
*****
Offline Offline

Posts: 1574



« Reply #9 on: July 20, 2021, 07:39:49 PM »



And all three have variable speed controls built in to the units — quick, easy, accessible, no fiddling with extra loose wiring, or taking a chance on heating up or ruining a motor not designed for variable speed work.

I keep a pair of safety glasses, clean and on top of the first grinder — and another backup pair on the reel bench pegboard to my lower left.  These are the types of safety glasses that go over my reading glasses — and have good side protection also.

Best, Fred

Nice setup Fred. Variable speed benchtop grinders, it would be nice to have 2 of them but I have space for one.

 I had not idea that I needed one with variable speed when I picked mine up at lowes. :-)

Yes, I have a full face shield, freddie krugger style,


Logged

Shibs - aka The Gobi King
Fichigan
Gobi King
Administrator
Member
*****
Offline Offline

Posts: 1574



« Reply #10 on: July 20, 2021, 07:41:34 PM »

I try to not do Amazon but sometimes it can not be avoided, this one will work for up to 15A and under $26.00.

https://www.amazon.com/Universal-Variable-Voltage-Control-Controller/dp/B01M1I4NLX


THanks guys, I will dig up the unit and post the specs first,

running a fast motor at slower speeds will result in heat?
Logged

Shibs - aka The Gobi King
Fichigan
Tiddlerbasher
Photo Group
Member
**
Offline Offline

Posts: 3221



« Reply #11 on: July 21, 2021, 08:57:20 AM »

If it's an induction motor do not use a universal/brush type motor speed controller.
To properly control the speed you need to vary the frequency of the supply not the voltage/duty cycle.
Use one similar to the one in my previous post.
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines
Simple Audio Video Embedder
Valid XHTML 1.0! Valid CSS!
Page created in 0.064 seconds with 20 queries.