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- Newsgroups: rec.models.rc
- Path: sparky!uunet!storcon!paulm
- From: paulm@storcon (Paul Moreau)
- Subject: Re: YS .61 Longstroke Eats Bearings
- Message-ID: <BuD693.4xL@storcon>
- Sender: paulm@storcon (Paul Moreau)
- Organization: Storage Concepts, Inc.
- References: <1992Sep8.164603.2285@inland.com>
- Date: Thu, 10 Sep 1992 13:17:26 GMT
- Lines: 50
-
-
- In article <1992Sep8.164603.2285@inland.com>, pasmith@inland.com writes:
- |> I'm seeking information from flyers using YS .61 longstroke engines. Two of the
- |> pattern flyers in my club have YS .61 longstrokes in their Summit III pattern
- |> planes. They have gone through 5 sets of bearings between them this season
- |> alone.
- |>
- |> Lean runs aren't a problem. We fly together all the time and are careful in
- |> avoiding overly lean settings. All of us use fuel with castor/synthetic mix,
- |> 10% or 15% nitro. We have tried Powermaster, Byron, Omega. I don't think fuel
- |> is the problem. I haven't had any problem with my O.S. .61 nor has one of the
- |> other guys who's second pattern plane has an O.S. .61 longstroke pumper. We
- |> both went 3 seasons before needing to change bearings on the O.S.'s.
- |>
- |> Note that both of the YS engines are the early models with the smaller rear
- |> bearing.
-
- Aha, there it is. We had many bearings go with the early .61 long strokes
- but since the new square head long came out I've haven't heard of one eating
- one up for no reason yet. We did have one go, but found out later that the
- guy never used any afterrun (Synthetic!) oil. I have one of the early .60
- short stokes and it ate it's bearings also. I got it used from a guy who
- said he always :^) used afterrun oil but I don't know about that, I've seen
- some of his other engines. I use Klots KL-100 oil which is a synthetic
- with 20% caster. I believe this is the same oil that Power Master uses in
- thier fuel.
-
- |>
- |> My questions to other netters:
- |> - Are any others having problems with YS .61 long
- |> strokes eating bearings?
- |> - Has anybody solved this problem?
- |> - Is this a problem with the later models which have a larger bearing?
- |>
- |> Thanks for any info.
- |> --
- |> Todd A. Smith | Internet: pasmith@inland.com
- |> Inland Steel Co. |
- |> Operating Technology Dept| CompuServe: 72557,3713
- |> East Chicago, IN 46312 | America On Line: ToddS4
-
- --
- _____________________________________________________________
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- - Paul Moreau | =_= / -
- - Sr. Diagnostics Software Eng. \ USA / -
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