--- In [email protected], Bill BIGGS <webacr...@...> wrote: > > > Actually when timing the mags it is necessary to "snap" the impulses in the > normal direction and then back the prop up. > > > > And I never time mags without pulling the top or bottom plugs. It is part of > the annual to clean and gap them anyway so I do the timing with them out. > > > > > > An even better addage is: > > > > ALWAYS ASSUME THE MAGS ARE HOT---NEVER PULL THE PROP THRU UNLESS THE PLANE > IS TIED DOWN AND YOU ARE PREPARED FOR THE ENGINE TO START. > > > Especially with a stomberg carb that does not have an idle cut off (mixture > control) that shuts off fuel to the engine. I actually had a friend walk past > the nose of a J-5 Cub, and he casually pulled the prop thru to get it > "level". The plane started. It had a broken wire to a mag. Luckily it was at > idle and chocked. > > > > Bill > > > > > > > To: w...@...; [email protected] > From: ebengui...@... > Date: Tue, 6 Apr 2010 15:10:46 -0400 > Subject: [ercoupe-tech] Re: Pulling the prop through on preflight > > > > > > I was taught something I never have forgotten. > Do Not ever turn prop backwards against engine rotation. > If you do you could screw up the engine something bad. > Prof. Ed > > > > _________________________________________________________________ > The New Busy is not the too busy. Combine all your e-mail accounts with > Hotmail. > http://www.windowslive.com/campaign/thenewbusy?tile=multiaccount&ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_4 > I FOUND OUT THE HARD WAY LAST SUNDAY [EASTER]. I had my plane in the shop and went out to test fly it. The line guys had pulled the plane to the ramp instead of to the hangar when the shop was done. I finished preflighting [including untying the plane] and as a habit when the engine is cold, I started to pull the prop thru. The first time fine. The second time it started. Needless to say I was startled and as I turned to get out of the way and head towards the cockpit, the engine stopped. The last person to work on it had left the mags on [but pulled the key] and he had pulled the mixture and left it out.
Lesson learned!!!!!!!!!
