Message: 16 List-Post: krnet@list.krnet.org Date: Sat, 31 Dec 2005 21:26:58 -0500 (Eastern Standard Time)
From: "Dan Heath" <da...@alltel.net> Subject: KR> Bad day To: <kr...@mylist.net> Message-ID: <43B73DF2.000005.03972@DANHOMECOMPUTER> Content-Type: Text/Plain; charset="iso-8859-1" >Well, there won't be any flying for Dan and Jerry anytime soon. We put the >tail in a valley between the taxi way and the runway to get the tail low. >Jerry was running it at about 3000 rpm, with less than a1/4 tank and it was >running great. He started to pull back and the engine came to a very abrupt >stop. It is frozen. There was no indication that anything was wrong. No >smoke, no foul temp readings, no nothing. So now back to the shop with the >engine. I don't like working on them. I can build them, but really don't >trust myself with it and I don't know who will work on a VW for an airplane, >that I would trust. I had a similar problem during our recent cold weather here in Oregon. I was about to taxi down the runway to check out a nose wheel shimmy problem. When I started my engine it was real cold. It didn't start right away so I pulled the prop backward about ten times because of flooding, and finally got it started. When I climbed into the cockpit and applied power to get moving it quit. I got out to check it and it was locked up solid. A few days later after I'd split the case I found non ferrous metal chips in the sump (from the bearings) and the cause was a galled ring bearing at the bell housing end of the engine. That's the farthest from the oil pump. My thrust bearing is at the #3 position like Revmaster. Pulling the prop backward might have pushed the oil away from the gallery being as thick as it was due to the cold. I have installed a brass fitting in the case for a full flow oil filter. Everything ealse looked ok in the engine with a small amount of wear and was a great lesson to me. It probably wouldn't have happened in warmer conditions when the oil was thinner, and it was a good thing that this didn't happen up in the air. I think cold weather brings out hidden problems. Full flow filters are cheap and easy to install when the case is apart. I haven't priced out the teflon/stainless steel braded oil lines yet so it may not be so cheap.
