Author Topic: New Oregon Grinders  (Read 1023 times)

0 Members and 0 Guests are viewing this topic.

Offline Philbert

  • Gas Hotsaw
  • ******
  • Posts: 563
  • Karma: 75
Re: New Oregon Grinders
« Reply #10 on: September 29, 2015, 03:35:43 pm »
I picked up a pair of 520-120 grinders,  . . . this thread seems to say that the included wheels are junk and I should get better wheels.

Dave, the grinders you bought are a replacement for the 511A/511AX full-sized grinders.  They are probably made in Italy (?) and come with the pink, Italian grinding wheels (?) - please correct me if I am wrong.

The cheap wheels I mentioned came on the smaller, Oregon 310, grinder, made in China, and supplied with fine, brown wheels, also made in China, that were much lower in quality and performance.  I would start with the wheels that came with yours, and see how they work.

Yes, you have to change wheels to grind the depth gauges.  Some guys dedicate a grinder just for this task - sometimes they buy a used one off of CL, or buy one of the $120 clones for this purpose.  Worthwhile if used in a production mode to have 3 grinders, set up with 1/8", 3/16", and 1/4" (or 5/16") wheels.

There are a number of threads on using these grinders on different forums.  My top tips:
- take lots of little 'taps', not big ones, to avoid burning cutters (all 'dots' and no 'dashes' if you ever learned Morse code);
- dress the wheels frequently to expose fresh abrasive, not just to maintain the shape (at least once per chain loop, and anytime grinding performance changes);
- only take the wheel down as far as you would file the cutters - go back and clean out the gullets on a second pass (move chain stop back 1/2 turn or so) if needed;
- don't assume that the Left and Right cutters will come out the same.  I grind all of the Left cutters first, then just one of the Right cutters.  Stop, hold it back-to-back with one of the Left cutters, and adjust the chain stop or wheel depth accordingly.

Take your time and you will soon fall into a rhythm.



Related Topics

  Subject / Started by Replies Last post
195 Replies
Last post March 26, 2021, 01:52:18 pm
by 3000 FPS
2 Replies
Last post February 10, 2013, 08:09:53 pm
by Al Smith
1 Replies
Last post August 22, 2013, 05:40:20 pm
by Cut4fun .
4 Replies
Last post August 31, 2013, 09:12:44 pm
by mdavlee .
17 Replies
Last post November 01, 2019, 03:17:40 am
by bcarautocenter
2 Replies
Last post May 03, 2014, 12:47:51 am
by 660magnum
20 Replies
Last post December 20, 2014, 06:12:22 pm
by 660magnum
2 Replies
Last post December 15, 2014, 01:40:33 pm
by Philbert
19 Replies
Last post March 22, 2015, 07:54:43 pm
by jmester
3 Replies
Last post December 13, 2015, 11:47:19 pm
by Philbert