Original Posted By: Isablcorky(at)aol.com
Hello list, I have been reading the list for over two years now and I am alwaysimpressed with the vast knowledge of the group. I haven't started building aPiet yet, still looking for the right tree... I'm hoping one of you can helpwith an engine problem.I have a Continental C90 on my J3 that was just overhauled by a shop with a goodreputation - new cylinders, pistons, crankshaft... everything. My problem isthat after about 5 hours of flying the front crankshaft oil seal starts leakingoil. I am on the second seal and it is leaking again. The shop is willingto open the engine up and look for the problem but it would mean taking theengine off the plane and shipping it to them. In looking through the Maintenance and Overhaul Manual there is a note that says: If a flange type crankshaft is to be installed in an old type crankcase (withsmall shoulder behind oil seal recess) a special spring (part number 25386) maybe installed behind (and not touching) the oil seal to act as an oil slinger.This is the engine setup that I have. When I asked if the special spring was installedI learned that it wasn't and that they had never heard of such a springand couldn't cross reference the part number. The Manual does say "may be installed". I read that as "if you want you can butit is not necessary" The good news is that if the spring will solve the problemit can be installed easily.Does anyone out there have any experience with this engine, spring, seal???Thanks in advance. Rollin Young, Juneau, Alaska________________________________________________________________________________
Pietenpol-List: Oil leak
Re: Pietenpol-List: Oil leak
Original Posted By: "walter evans"
Thanks for the response Walter. The oil breather was the first thing themechanic had me check. It was not obstructed. Rollin----- Original Message -----
Thanks for the response Walter. The oil breather was the first thing themechanic had me check. It was not obstructed. Rollin----- Original Message -----
Re: Pietenpol-List: Oil leak
Original Posted By: "Rollin"
Rollin,Did you check the crankcase breather or breather pipe? If clogged, withheating and expanding, it's got to go somewhere.walt----- Original Message -----
Rollin,Did you check the crankcase breather or breather pipe? If clogged, withheating and expanding, it's got to go somewhere.walt----- Original Message -----
Re: Pietenpol-List: glue test pieces for ribs
Original Posted By: Mike
Besides, you are not testing the strength of the rib design, that hasalready been done. Moreover, ribs don't even undergo very much stressanyway. The purpose of making test pieces is only to determine whether thebatch of glue you mix is done properly. Ideally, I guess, you should makeone test piece every time you mix glue and make sure you know which piecesyou glued wuith it if it should turn out to be bad. Now, has anyone heredone a test piece every single time they mixed even a small batch? Ihaven't.Gene Rambo----- Original Message -----
Besides, you are not testing the strength of the rib design, that hasalready been done. Moreover, ribs don't even undergo very much stressanyway. The purpose of making test pieces is only to determine whether thebatch of glue you mix is done properly. Ideally, I guess, you should makeone test piece every time you mix glue and make sure you know which piecesyou glued wuith it if it should turn out to be bad. Now, has anyone heredone a test piece every single time they mixed even a small batch? Ihaven't.Gene Rambo----- Original Message -----