Lydd Model Flying Club. Kunts Best.

The Lydd Model Flyers are a BMFA Registered Model Aero Club on the Romney Marsh, UK.
 
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 os Max 60 fp

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grounded

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Number of posts : 808
Age : 62
Location : Greatstone
Registration date : 2008-02-15

PostSubject: os Max 60 fp   Tue 28 Oct 2014, 8:06 pm

Hi all
Anybody know if the phosphur bronze main bearing in the crankcase can be replaced or do I have to scrap the engine?
I,ve looked on the os site but to no avail. Shame cos there's loads of compression and no wear except on the bearing.
Any ideas great fully accepted.

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Worzey

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Number of posts : 1299
Age : 44
Location : Ashford
Registration date : 2008-02-09

PostSubject: Re: os Max 60 fp   Tue 28 Oct 2014, 9:18 pm

Are you sure that it's had it Dave?
I have had many of the plain bearing OS' s (FP version) and they do on forever!
I believe the bearing is a non serviceable item, which is why I question your question? The crankshaft do have a lot of end float on them. What makes you think its U/S?
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grounded

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Number of posts : 808
Age : 62
Location : Greatstone
Registration date : 2008-02-15

PostSubject: Re: os Max 60 fp   Wed 29 Oct 2014, 2:56 pm

Hi Ian, thanks for reply.
Yes, its not end float, the bearing is worn at the conrod end allowing the crankshaft to wobble sideways and up and down. I guess its been run lean at some time. Didnt notice till I put a prop on it but now its stripped down its easily seen. Its classed as a vintage engine now and spares are rare/unavailable. Gonna try Kent bearings, if I can get somewhere near it, I can machine it at school.
Cheers

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Worzey

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Number of posts : 1299
Age : 44
Location : Ashford
Registration date : 2008-02-09

PostSubject: Re: os Max 60 fp   Wed 29 Oct 2014, 5:17 pm

Check out the dimensions of the 65LA..... it might just fit??
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