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-   -   YS (https://www.rcuniverse.com/forum/ys-engines-support-197/2315828-ys.html)

mck 11-04-2004 12:17 AM
YS
 
In disassemblying my YS110 I noticed that the wrist pin is a very tight fit in the piston and conrod. Is this normal?

Dave Shadel 11-04-2004 11:54 AM
RE: YS
 
Normally they are not that tight. Why did you take it apart?

mck 11-04-2004 09:41 PM
RE: YS
 
Hi Dave,
Thanks for your fast response! I took the engine apart because after a recent flight, I found that the engine felt rough, felt like metal grinding, when I hand turn the prop. so I wanted to check what the cause was. I suspect it may be the bearing, but I only had no more than 20 flights and it has been running rich during this whole period and it had been running beautifully. I also gathered from the Ys spare parts list that the cylinder head and liner comes together as one part. Is that correct? Thanks again for your advice.
mck

Dave Shadel 11-05-2004 11:15 AM
RE: YS
 
The cylinder and liner are 1 piece, unlike the 2 piece version of the early 91.

mck 11-05-2004 06:43 PM
RE: YS
 
Hi Dave,
Thank you for help, very much appreciated!

Dave Shadel 11-06-2004 10:35 AM
RE: YS
 
Good flying!


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