Original Posted By: dave rowe
Pietenpol-List: engine disassembly
Re: Pietenpol-List: engine disassembly
Original Posted By: "Michael D Cuy"
Only on certain engine models with metal prop. The small continentals withwood prop seldom are torn down. Might dial the crank but the beauty of awood prop is that it gives and not the engine.Cy Galley, TC - Chair, Emergency Aircraft Repair, OshkoshEditor, EAA Safety Programscgalley(at)qcbc.org or sportpilot(at)eaa.orgAlways looking for articles for Sport Pilot----- Original Message -----
Only on certain engine models with metal prop. The small continentals withwood prop seldom are torn down. Might dial the crank but the beauty of awood prop is that it gives and not the engine.Cy Galley, TC - Chair, Emergency Aircraft Repair, OshkoshEditor, EAA Safety Programscgalley(at)qcbc.org or sportpilot(at)eaa.orgAlways looking for articles for Sport Pilot----- Original Message -----
RE: Pietenpol-List: engine disassembly
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Just thought I'd throw this one out there, Lycoming 0-235 lost a bladein flight should the motor be torn down or just dial the crank.NormanZS-VJA (rebuilding)-----Original Message-----
Just thought I'd throw this one out there, Lycoming 0-235 lost a bladein flight should the motor be torn down or just dial the crank.NormanZS-VJA (rebuilding)-----Original Message-----
Pietenpol-List: engine disassembly
Original Posted By: jimboyer(at)direcway.com
RE: Pietenpol-List: engine disassembly
Original Posted By: "Steve Eldredge"
Steve,Around twenty years ago I asked a veteran mechanic if he had ever seen acrankshaft or engine damaged by a wooden propeller strike. Since that time,I have asked at least ten experienced aircraft mechanics the same questionand always received the same answer:"Never."Since I have been a licensed aircraft mechanic since 1953, I guess I alsofall into the "veteran" category. I have seen lots of engines seriouslydamaged by a metal propeller strike, but never with a wooden propeller. Solong as the crankshaft flange has not contacted anything hard, you should beOK.However, a thorough inspection of just about everything is in order,including:---checking runout and a dye penetrant inspection of the exposed crankshaft;---inspecting engine mount and fittings;---inspecting the upper spar flanges just outboard from the wing strutattach points* for compression failure;---inspecting the lower longerons near the landing gear attachment points.* On the side that contacted the ground.Tough luck, but it could have been much worse. You should soon beoperational again .Graham Hansen (Pietenpol CF-AUN) Alberta, Canada________________________________________________________________________________Subject: RE: Pietenpol-List: engine disassemblyDate: Wed, 10 Mar 2004 15:21:10 -0700
Steve,Around twenty years ago I asked a veteran mechanic if he had ever seen acrankshaft or engine damaged by a wooden propeller strike. Since that time,I have asked at least ten experienced aircraft mechanics the same questionand always received the same answer:"Never."Since I have been a licensed aircraft mechanic since 1953, I guess I alsofall into the "veteran" category. I have seen lots of engines seriouslydamaged by a metal propeller strike, but never with a wooden propeller. Solong as the crankshaft flange has not contacted anything hard, you should beOK.However, a thorough inspection of just about everything is in order,including:---checking runout and a dye penetrant inspection of the exposed crankshaft;---inspecting engine mount and fittings;---inspecting the upper spar flanges just outboard from the wing strutattach points* for compression failure;---inspecting the lower longerons near the landing gear attachment points.* On the side that contacted the ground.Tough luck, but it could have been much worse. You should soon beoperational again .Graham Hansen (Pietenpol CF-AUN) Alberta, Canada________________________________________________________________________________Subject: RE: Pietenpol-List: engine disassemblyDate: Wed, 10 Mar 2004 15:21:10 -0700
Re: Pietenpol-List: engine disassembly
Original Posted By: dave rowe
Re: Pietenpol-List: engine disassembly
Original Posted By: "Steve Eldredge"
Steve,Put some lapping compound between the hub and the crankshaft without the keyinstalled. Line the hub key slot with the slot int he crank and lap back inforth about 30 degrees either side of each other. This will make for abetter taper fit and illuminate most of the "gap". Be sure to clean thelapping compound off when you are done.Chris Bobka----- Original Message -----
Steve,Put some lapping compound between the hub and the crankshaft without the keyinstalled. Line the hub key slot with the slot int he crank and lap back inforth about 30 degrees either side of each other. This will make for abetter taper fit and illuminate most of the "gap". Be sure to clean thelapping compound off when you are done.Chris Bobka----- Original Message -----