0TreeLemur

Anybody know the size of the threads are on the M20C tank drain valves? I didn't measure it when it was out, and can't find it in the parts catalog. If I had to guess, I would put my money on 1/4" NPT. Can anyone confirm/reject this notion?

While looking into wing attachment this morning, I came across this very sad wing failure on April 18 of this year due to fatigue an spar corrosion on a 2007 Arrow used for flight training with over 7000 h TTAF. The preliminary NTSB report includes incontrovertible photographic evidence of the failure mode that led to wing separation: https://app.ntsb.gov/pdfgenerator/ReportGeneratorFile.ashx?EventID=20180404X13226&AKey=1&RType=HTML&IType=FA The report also shows how the Arrow wing is attached. Quite different from the Mooney design.

The photo is awesome. I'm not surprised that the wing can hold 30 people. Rated max wing loading is 2575 lb * 3g = 7725 lb, compared to 30*175 = 5350 lb. They could have put more people up there. I'm just glad they didn't use my a/c. The aluminum skin out there is only 0.020!

I clicked on that link, the redirect works, but the image is not there. I'd love to see that.

Thx. Amazing that they are so inexpensive. I'll take two at that price. The other one drains slow when I sample fuel.

I've got it listed on eBay as auction number 123084875840. That item is presently at $200, which is a pretty good discount considering that it is almost new. Search for ALMOST NEW ***Electronics International VA-1A-50 Volt/Amp meter***

I just bought a KX155 wrapped in a M20C last November. The COM was weak (intermittently) and the CDI was squirrelly when linked to the NAV . I sent the radio to a noted electronics shop. What I learned is that KX155's of a certain vintage develop leaky capacitors that ooze acidic junk onto the circuit board and wreak havoc. The tech I dealt with referred to this as a kind of electronic cancer. He didn't think that the corrosion was so bad as to disable the unit, and replaced the 10 or so capacitors that were leaking or known to leak. He did a bunch of other stuff too regarding levels adjustment, replaced a volume knob, etc. You might have this same problem. Good luck.

Marauder, shortly after I snapped that photo, my co-pilot (wife) noticed that the fuel remaining and tank indications did not agree. I forgot to enter added fuel before t-o. We got out the manual and figured out how to add fuel on the go. The device and its interface seem really well thought out. The K-factor for the fuel flow sensor was duly noted before installation of fire sleeve, and entered into the manual and device. I did program the %power as described in the manual using values from the POH. However, there are many factors that go into the power calculation, Without a torque measurement, I see that indication as a "suggestion". It says 100% on takeoff ;-)

Richard, thanks for the info. Too bad it isn't some weird metric size... This means that on my a/c the limit lever the hole is stripped so that a No. 8 screw slips in/out. I spoke with my A&P who said he will tap it so a #10x32 fits.

When we calibrated the fuel tanks, I emptied the L tank in flight, then drained about 7 gallons from the right tank after landing by removing the sampling port. Now said sampling port is leaking as evidenced by blue staining around its perimeter about 1/2 inch. I didn't want to over tighten it. Does anyone know the correct torque for that? The maintenance manual doesn't seem to include that fact. -Thx.

I think it is a number 8x32 but mine is stripped. Anyone else seen that?

What size screw is that? The one on my O360 needs replacing. Trail and error through my A&P’s used screw collection turns up 0.16” (too large) and 0.12” (too small). I need (just right). Thx. Follow up- I think it is a no. 8 screw but stripped out. Anyone had that problem?

As of 4/18/18, I have a Garwin 6-pack cluster for sale on eBay, with bad oil temperature gauge, item number: 123078534718 Presently valued at $5.50+shipping.

Hi Joe. The cluster gauge is presently selling for $5.50 on eBay. Auction number: 123078534718

All these items listed on ebay under my user name "bigeau" if any of you MS-ers want to see the items.

I found the M20 interior label/placard set by a company called Aerographics to be pretty complete. I'm going to order a set when I get my panel redo finished.

J.P.I. EDM900 Installed and tested. Works great! It sure makes leaning the engine a snap. Seeing everything in one place in vivid color is awesome. The Lycoming manual says to run the O360 at peak EGT. I can't bring myself to do it, remembering stories about burned exhaust valves. Kind of like being told "Go ahead- run with scissors." or "Go swimming right after you eat a big meal." 75F rich of peak is what I was taught, which gives about 10.8 gph at 5500-6500 ft and 24 sq. Should I run at peak? (note I forgot to hit "Refill? <yes>")

I just learned that Dynon has discontinued the D-2. Weird. I think it is a very useful and smart backup with a lot of useful info shown. Any ideas why they might have discontinued it?

Hi MS-ers, I'm 3/4 finished with panel upgrade of our 1967C. Installed JPI EDM900, which produced a bumper crop of unneeded instrumentation. I want to offer these items here on MS before listing them on ebay. 1. Tach, stamped from the 1980's, built by Superior Labs, Inc., Hot Sprgs, AR. for Cessna. Working when removed. Agreed with new EDM900 tach, hour meter says 1018.0 hours. No logo on face plate. No cable. 2. Original six-gauge Garwin instrument cluster in 2 rows, 3 cols layout, with amphenol connector. All gauges working when removed except oil temperature. ***SOLD*** 3. Combined Garwin MP/FP gauge, overhauled Dec., 11, 2017. Mooney logo on face plate. 4. Radair single EGT indicator- worked upon removal. ***SOLD*** 5. EI VA-1A certified VA meter with wiring harness and shunt. Purchased last fall and installed. Made redundant by EDM900. Working when removed. ***SOLD*** 6. EI Oil Temp/Press gauge. with press. xducer/temp. sens. and wiring harness. Working when removed. ***SOLD*** 7. Dynon D-2 pocket panel with external GPS antenna, accessory power plug in and wall adapter. Top few lines horizontal of the display are always white but these don't cover up vital information. Works otherwise. With pinch mount for installation in empty 3-1/8" instrument hole. This thing is cool. I wish I had a spot for it, but I don't. ***SOLD*** 8. Garmin 396 aviation GPS with external antenna, accessory power plug, antenna for Sirius XM weather data, software updated November, 2017. With mounting bracket. Working. Tons of cool features. ***SOLD*** 9. Original carb. temp. gauge with amphenol connector, made by Aicrcraft Instrument and Dev. Inc. Inop when removed. Don't know if gauge is bad or sensor. If you are interested, please send PM. I can send photos of what interests you. -Fred

carusoam, your wisdom continues to amaze, astound, and inspire. Having just completed the panel redo and EDM900 install, the fuel smell in my C on the ground is really starting to annoy me. It is present even when the tanks are below the level where they weep, especially on the pilot's side. I don't notice any blue carpet. Is there some document, previous thread, or web page explaining how to remove the interior panels without destroying them? How does one gain access to the fuel pump/gascolator? I have manuals but have not begun to study the issue. Your response to this thread prompted me to ask. -Thx.

I have one from my C that was just pulled to create space for an engine monitor. It was working great.

Thanks. Late yesterday I called Wentworth and ordered a used Garmin GI-106A for that price.

Hi MS-ers, Upgrading to 430W and looking to purchase a compatible VOR/LOC/GS indicator like KI-209A or GI-106A. Must come with yellow tag or 8130. If compatible with KX-155 or GNS430W, I'm interested. Thanks, -Fred

You are correct, I see no limits. Thanks for the explanation. I appreciate the opportunity to learn from you.

Below is from pg. 5 of the 1967 M20C POH. It pretty clearly describes how the Ammeter is useful for diagnosing problems with the electrical system. I'd say that makes it primary, wouldn't you?