flyrotary@lancaironline.net Mailing List Archive

Hi, Todd....I have had to replace the serpentine belt on my Ford motor home. (Broke on the highway on the way to a canard fly-in of course). All of our tractor-trailer units have serpentine belts. Fairly high failure rate. I always keep at least 12 different serpentine belts (2 of each size) in my repair truck so that I can fix them on the roadside. We use Gates and/or Goodyear. In fairness, however, a few of the older units have a V belt for the alternator. They fail as well. Don't know which type of belt fails more frequently, but they both fail with regularity. Now if we changed them at every annual condition inspection, however..... Paul Conner

----- Original Message -----

From: Todd Bartrim

To: Rotary motors in aircraft

Sent: Saturday, February 26, 2005 4:51 AM

Subject: [FlyRotary] Re: Racemate alt/water pump

V-belt is cheaper and lasts longer,
Are you sure? I've never had to replace a serpentine yet. But I've seen allot of V-belts come & go.

serpentine belts bend both ways,
multi-rib belts I haven't seen much of, but I think they're a lot like
serpentine.
Multi-rib & serpentine are the same animal, I believe. Multi-rib refers to the belt design, but the belts can vary in length. I'm using a short multi-rib belt for my alternator only, but if it was longer and was used to go around my alternator, water pump, idler pulley, power steering pump, A/C compressor, etc, then it would be called a serpentine belt. But the term is often used interchangeably.

At least that's my take on it. I could be wrong.

Todd

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