Office of Steam Logo_1

« previous next »
Pages: [1]

Author Topic: Noisy PM Research generator  (Read 426 times)

  • Jr. Member
  • **
  • Posts: 153
  • Location: Near Pittsburgh Pennsylvania
Noisy PM Research generator
« on: February 12, 2023, 01:17:13 pm »
Anyone else have a noisy PM Research generator? I got one about 10 years ago and it worked great. I got another one a month or so ago and it growls and chatters a lot. I have to use more oil on the brush end than I do on the engine. If anyone else had this problem and found a solution I would like to know it.
Logged
Best Regards
John

  • Sr. Member
  • ****
  • Posts: 1193
Re: Noisy PM Research generator
« Reply #1 on: February 12, 2023, 05:52:27 pm »
  Well....I built one last year, and when running as a motor it
for sure chatters at some speeds.  Perhaps an earlier production
batch was machined closer to specs.  It does work, looks nice, and
with the heft has real American-Style gravitas.  It would be better
without the chatter, but... I'll live.

Good Luck,
Wayne
Logged

  • Global Moderator
  • Engineer
  • *****
  • Posts: 5596
  • Location: St. Paul Indiana
Re: Noisy PM Research generator
« Reply #2 on: February 12, 2023, 09:08:41 pm »
I have one of those as well John, bought it from Carl out of California I believe. It was machined sloppy and has a lot of play in the bronze bearing area, take a lot of oil & frequent oiling to keep it quit. Loose tolerances and aside from making new bronze bearings I think your stuck with how its behaving.
Logged
Bruce, St. Paul Indiana, USA
"Originality thrives in seclusion free of outside influences beating upon us to cripple the creative mind."
  Nikola Tesla

  • Sr. Member
  • ****
  • Posts: 1193
Re: Noisy PM Research generator
« Reply #3 on: February 13, 2023, 09:10:07 am »
Yuppers.  Just wanted to add that the there is play
when it is not running.  I have two PM engines I built
from machined kits and they were fine, so that is a
plus.  I also have a PM1 and boiler machined by someone
else and they are fine.  Maybe the PM machinist had a
bad day.  Four out of five ok....not bad results.

Wayne
Logged
Pages: [1]
« previous next »