MikeOH

All I want to know is why Mooney changed the mechanical flap system in the M20B? Johnson bar simple; wish my M20F had it.

Just rebuilt both mags at annual this past January. I thought briefly about an E-mag but went traditional. This data based thread makes me feel like I didn't make a huge mistake; maybe gave up easy starting. But, I've only had a couple of hard hot starts...never ran a battery down. And, I've got my hot start procedure pretty dialed in, now

@Ragsf15e Curious about your methodology for establishing the error bars. Thanks!

You might consider replacing the zip-tie on the pushrod tube with an Adel clamp. Eventually vibration will cause it to cut through the metal tube.

Seriously, though. I bought my Mooney with a gear-up history; it was before the last engine overhaul and had the one piece belly, which was a plus! I didn't give the gear up a second thought.

Yeah, that's a defective Mooney, right there! Mooneys are designed to be Time Machines into the FUTURE! Run from this one!

It's in SOME POHs. And, appears to be in ALL newer POHs. That fact begs the question: are all those owners of old aircraft suppose to go buy the latest edition of their models POH and follow it? I mean, that would be the SAFEST thing to do, right? And, if they don't then they must be dangerous pilots like me. Yeah, no one's said that..but it's dripping off your prose. Good night.

Good thing I have a 1970 M20F...the lawyers weren't swarming at that point, apparently

@carusoam I made it quite clear what I was going to do with the information.

I think your logic is flawless. However, the POH cite above hardly describes anything close to that process. In fact, it is in a bolded section AFTER the pre-flight checklist. It's AFTER telling you how to shut and lock the door, and it doesn't mention even remotely how long to drain, let alone which tank. Cliffy's comment about crud and at annual (which likely doesn't happen, unfortunately), I'm going to periodically position a decent size jar that is greater than the sump and line volume, and drain for long enough to fill it. THAT would be a worthwhile check; I can look for crud and all that water that is supposedly lurking in there. I'm sure NOT going to do that before every flight and fill-up. Which is likely why the POH does NOT have it as part of the check list itself.

Wait, I thought we were talking about WATER?

Sigh...what's the point? I want to KNOW if there is water. That's the point of sumping the tanks, isn't it? If I see water I'm damn sure going to do something about it! The POH excerpt to pull the drain after you're already in the plane is pointless.

Maybe, but that is NOT what I said. You are most certainly NOT CHECKING for that water. Per the POH cite above you are already ensconced in the plane at that point.

Hmm, what is the point of doing this? You are already IN the airplane; they just told you how to shut the door for gawd's sake. You're sure not checking for water in the sump!

BINGO! Exactly how I handle it. It's probably about time for me to check the sump to make sure it still works, but since I've NEVER found water in the tanks I'm not about to start draining the sump before every flight! As you say, IF I find water in the tanks I will most definitely be THEN draining the sump.

Solution: Buy a plane that has been flown 100 hours/year for the last couple of years. The airworthiness bugs have been worked out. Upgrades are your own fault

True, dat. But, nothing looks and smells as good as leather...mmmm. Comes down to functionality vs. pizazz

My plane has them, but it wasn't something I was shopping for and, if you took them away, I wouldn't really miss them. But, when SoCal keeps me at 5,000 AGL until 5 miles from the airport they sure are kinda nice

Yep. And, sadly, this is why I only fly my wife and kids. No friends or those interested in learning about GA, unfortunately. I'm paying around $1300 with $100K sub-limits; going to $1MM smooth would over DOUBLE my premium!! Not worth it just to give rides, I'm afraid.

Yeah, pretty useless website. But, I bought my shoulder harness from them in November 2017...so, they were still around then. Wife made me take the HOOKER patch off the webbing, however

Another big +1 for Pacific. I had mine gone through about a year ago. They are right by my home drone (POC) and drove the cooler over and picked it up less than a week later. Real easy to work with.

Nylon zip ties are pretty strong

You could be right, but at this point, it seems the Surefly has provided sufficient evidence that it should be sent to the manufacturer. The damming result was the drop in CHTs when you turned it off.

My suspicion is that an electronic mag does NOT have a fixed timing; rather, its advantage over a conventional mag is its ability to vary the timing. I have no doubt the timing is perfect for starting....it's during climb/cruise that I suspect the timing is out of wack.

Glad you are narrowing this down. Have you called Surefly? Maybe time to pull that Emag and sent it to them.