Originally Posted by
papaone
Hello
I'am very happy with my YS 200 CDI which has about 200 flights or around 40 hours of operation.
I hesitate to overhaul it.
What type of maintenance do you do on your YS?
-Are you waiting for the breakdown?
-Do you do systematic maintenance; if so, after how long and what parts do you change?
-Do you do predictive work, if so what are the indicators (pump pressure, rpm, etc.)?
Claude
Hi Papaone,
If you get 200 flights without changing bearings that's very good.what fuel are you using?
I use 30% nitro and 10% CP Oil and I normally have to replace the bearings at around 170-200 flights.
Once I strip the engine I will change all the gaskets and O rings and regulator diaphragm .
At this stage I will check the pump also but only change if its gone hard ......this one is hard to tell but how the engine behaves in the air will determine if the pump is not working properly......
I also pull the disk valve apart and reset by sanding the surfaces smooth with wet and dry and some oil.
Also check the piston ring and liner for any wear......
After reassembling the engine always reset the tappets at just before TDC ....YS engines like tight clearance on the tappets.
Normally I will get another 150-200 flights without any issues but on this overhaul I will change all of the above and also the pump, piston ring, and back plate.
I hope this helps.....
kind regards