cliffy

Speaker low and pilot phones low go to pin 22 Shielding goes to Ground

Very detailed balancing instructions are shown in section 27-93-01 of the Mooney J maintenance manual available right here on MS in DOWNLOADS (up top on drop down menu for Browse) It is very serial number specific - so check carefully. If its out of spec it is probably too much paint.

It seems that the FAA has put us in a box with only one way out -- CAS If the airplane in question was not certified using CAS then right now the only option according to them is the AC. It probably remains a paper weight for this discussion

Have you calibrated your CHT system to see if it is reporting accurately?

I'm always IN THE DOG HOUSE around here!

You can show good continuity between the probes with only the multimeter power but the connection could be weak when actual higher power is run through it. Also it looks like you are trying to measure something using the outside shielding of the speaker wire. WHY? That only has one function and that is to go to a ground at one end of the shielding only to prevent spurious signals from getting into the radio. It has no function in the operation of the speaker. One wire goes from your radio to the speaker and the second speaker connection goes directly to a ground at the speaker or through a second wire (not the shielding) back to the correct pin on the radio. Not through the shielding.

There was a notation in an AOPA article (2 articles) this month (Nov) that delt with this very issue. It seems there is guidance from the FAA on how to determine CAS from IAS in those airplanes without CAS references. It is AC 90-89C MUST be Originally Certified with a Stall speed clean at max gross weight -- 59 KTS CAS max and meeting the rest of 61.316 A practical test meeting 61.307b is required ------ Along with training and sign off if night flying is needed. Training and endorsements for controllable props and suckum up gear is also required per 61.331 Can't fly on driver's license medical IF one has applied and failed a real 3rd class or Basic Med exam. AND No more than two persons (pilot and passenger) in a 4 place airplane if flying as a Sport Pilot. Hope this helps

RULE NUMBER 1 -- NEVER BUY THE FIRST AIRPLANE YOU LOOK AT- NEVER! RULE NUMBER 2-- GET PROFESSIONAL HELP WITH A BUYERS AGENT RULE NUMBER 3-- NEVER-- READ THAT AGAIN-- NEVER --BELIEVE ANYTHING TOLD TO YOU BY A SELLER OR HIS AGENT-- NEVER CHECK EVERYTHING OUT YOURSELF OR IF YOU DON'T KNOW THE SUBJECT WELL GET SOMEONE WHO IS AN EXPERT NOT EVERY A&P (NOT MANY A&PS) AR EXPERT ON MOONEYS I HAVE JIMMY GARRISON ON SPEED DIAL FOR WHEN I GET READY TO SELL YOU DON'T NEED ANYONE ELSE GO SEE HIM AND AVOID GREIF DO I MAKE MYSELF CLEAR?

No wouldn't continue flying it until you research what could be wrong. The forces on the nose gear are tremendous when it is shimmying You will have to taxi it to check out any repairs however, The big pivot bolt is torqued to 300 in pounds and secured with a cotter pin (280-300) Make sure it is lubed completely I caution loading the stab with heavy weights Its not stressed for that and could deform in airfoil. Most likely your linkage above the nose wheel for steering is worn and needs attention. Get the nose in the air and turn the wheel left and right . If its real loose more than a few degrees it needs fixing. First order is to check tire pressure for correct PSI If low fill it and do a taxi test That may be all you need If however your steering linkage above the gear has not been looked at in decades that will probably be where the issues emanate If it has been a sudden onset of shimmy it probably is not the CASTER angle..

I got my D 28 years ago for $41,000 :-) So the inflated pricing lately has paid for my clean Dynon panel :-) :-) I can get 100% back out of it. Just took mine from St George UT (KSGU) to Houston TX and back a week ago. As they used to say (for those old enough to remember Western Airlines) "The ONLY way to fly"

What are you 21 yrs old ? :-) :-) Seriously LANCECASPER got me to look and I joined in 2009 Had no idea it was that far back Great group of folks here

Yes that is why I got into flying- to be above the maddening crowd. It releases me from the chaotic world on the ground. IT is the destination and my corner of solace. OK I'm old school, the cockpit stays flight centric and not diversionary from the basic premise of flying Even to listening to music - diverting my attention from the task at hand -- flying. Absorption of the sounds around you is one of the basic senses one uses to stay ahead of any trouble in flight Why take the chance by masking that primary sensory tool with music in your ears? I just can't make that leap. Too many years paying attention to the job of flying and staying safe There is enough going on even in those long overwater cross countries to stay occupied keeping things in order in the cockpit for me. @EricJ Nice explanation of the operating forces I wonder about front to back ratios on the antenna (with my limited knowledge of RF transmission) Likewise, the airplane was certified to meet a certain outward visibility scan and anything blocking the window defeats that criteria. Even in Class A airspace "see and avoid" is still the norm. I think we will see more on this subject in the months to come as the use becomes more noticeable. My guess is the FAA will come out with a notice and then enforcement actions. Some studies have shown that 50% of the population are addicted to their screens. No studies have been done though on the electromagnetic interference to our aircraft electronics -- in all inflight aspects. Just look to all the frequency checks we have to do when certain APPROVED radio systems are installed in our airplanes. Its easy to say it doesn't happen but I lost all nav in a 727 once due to a cell phone user. Checking for primary and harmonic frequency interference needs to be done especially in the microwave spectrum I would think someone could make some money with a roof mounted aerodynamic antenna shell to utilize the small Starlink antenna Shouldn't be too much trouble to get an STC for that but with proper freq interference checks for non-pressurized airplanes. Although it seems nice right now at the onset of a new day, the jury is still out on the legality and performance of the system.

Just because someone uses it doesn't make it legit or safe without empirical data. I posed the question because I haven't found any references to the subject I'll bet if you asked the 135s POI about putting an antenna in a window blocking sight out that window in flight I'd bet you $50 bucks on his answer. Even if it is "portable"! Are any of the signed off as legal in the log book? Just askin'

Hey I'm just bringing this up as a question that I haven't seen asked yet- :-) For the brain trust to toss around! Wouldn't be the first time of unintended consequences Used to work in the EMF transmission world but not an engineer in it. RADAR dishes emit enough emf that one does not want to be "in the beam" up close when its running.

Old school trick- keep an eye on your manifold pressure gage in cruise. If it starts to go down (and you haven't moved it) the carb throat is being closed by ice.