Office of Steam Logo_1

« previous next »
Pages: [1]

Author Topic: Rings and Hoses for Microcosm  (Read 454 times)

  • Jr. Member
  • **
  • Posts: 97
  • Experienced Bad Influence
  • Location: USA 🇺🇸
Rings and Hoses for Microcosm
« on: March 08, 2022, 05:35:41 pm »
Piston o-rings used in the various Microcosm internal combustion engines are really tiny! Other than a dealer in China, is there a source in the U.S. for this micro stuff?

Is there a chart available anywhere showing ring size and cross compatibility between the growing selection of engine models?

Fuel and cooling system tubing is another challenge. Local RC hobby shops don't stock the different Microcosm sizes.
Logged

  • Jr. Member
  • **
  • Posts: 277
Re: Rings and Hoses for Microcosm
« Reply #1 on: March 11, 2022, 09:15:58 pm »
Basically, whichever engine you have, look at the piston diameter, and source the green o rings  with a 1mm cross section.  Example: your engine has a 15mm bore, you want a 14x15 (or 15x1, depending on vendor listing) o ring.  I did exactly this for the vertical hit and miss m93 engine, when they were selling rings for ridiculous prices, and got like ten of them shipped for two dollars.  Yes China, but they’re utterly dirt cheap from hydraulics or food handling outfits that use them in equipment as connector seals.
Logged
Pages: [1]
« previous next »