0TreeLemur

So everyone knows, Cecilia Henderson of the former Brittain Industries sent me a Accutrak II maintenance manual today after I asked if I could buy a troubleshooting guide. She did not charge me. Even post-Brittain the support continues to be the best!

@Hank do you have, or know someone who might have, a B11 troubleshooting guide? I test flew my a/c last night and the Accutrak II is INOP. My instrument guy could use some advice.

I've been in a lot of older airplanes and have never seen anything like it. The colors are very non-standard for aviation controls/indicators. None of it makes any sense to me. I agree with -a- that it is time to chase wires.

Got it- thanks @Yetti. I am pretty sure that the materials I passed on to the installer included that, but it is good to have it online too.

@Yetti the B11 PoH supplement is still not there. There seems to be a glitch somewhere, or I'm just missing it. Please repost?

M20C_Weight_Balance_Data_Form_1965.pdf View File A form published by Mooney Aircraft Corp. in 1965 providing a means to weigh the M20C and compute the empty weight and moment arm. Submitter Fred_2O Submitted 05/31/2018 Category Performance Data

Must be some delay affecting when file uploads appear to others. I don't see the B11 PoH supplement in the downloads section yet. I'll check again in the morning.

Thanks for the info. My PC system is on unless I depress or remove the vacuum release button on the yoke.

Thanks for the upload. Cecilia at Brittain gave me all the docs, and I passed them along to the installer.

Mine does look like the photo @takair sent.

He said that he tested with the engine running...

I looked, and don't see an Accutrak II manual in the download section of MS. Just a PC system manual uploaded by @tonyand a Navigation Coupler manual uploaded by @Hank . Does anyone have an Accutrack manual in pdf format?

Thanks for the photo. I don't remember exactly what it looked like, but I vaguely recall that there was an "off" in between the NAV1 and NAV2 positions. Maybe it is worn off? I'll check. I see two "off" positions!

I just had a Brittain Accutrak II installed in my M20C by Jerry who has never installed one before. I've never used one either, but I really like the PC system and have read that the Accutrak II is great. Jerry called me today saying that he couldn't get the turn knob to deflect the ailerons. He also said that the thing doesn't have an on/off switch, it is always on, like the PC system. I'm going over (100 miles) away to flight test tomorrow afternoon wx allowing. A couple of questions that I hope someone can answer: 1. Since you cannot turn the Accutrak II off, when it is slaved to a CDI that is connected to a radio that is not tracking anything, i.e. always centered, the Accutrak II just does nothing, right? Does it only function when the needle on the CDI is "alive"? Is that effectively the on/off switch? Why didn't they put an on/off switch on the unit? Should there be one on the panel? 2. When you rotate the manual turn knob on the ground with the engine running, should it deflect the ailerons? If so, then my system has a problem because that doesn't happen according to Jerry. Thanks! Fred

They're cranky and can be unreliable too.

Hi, the prior owner of my a/c had his mechanic look the system over real well, but everything seemed to be working. It turned out that the thumb disconnect switch on the yoke needed a new o-ring. The PC system is really quite good. I'm getting an Accutrak II installed that I bought here on MooneySpace. I agree with comments made by others that whomever told you that the PC system is not worth repairing doesn't know what they are talking about. It is an elegant system that is characterized by low weight, simplicity, and great functionality. I don't know why more manufacturers didn't implement it. Good luck.

You ain't kidding. Looks like a soggy one. If it pans out there won't be any VFR flight from Sunday through the middle of next week!

That is the 9-1/2" version. I like the big screen. The single linkage on the ball mount provides a lot of flexibility for orientation (landscape/portrait) or position. I always check that it doesn't interfere with the co-pilot yoke.

Like this- a RAM ball mount on the dash, space courtesy of EDM.

Emotional -that is my problem. I am passionate about wrong/right and when I perceive someone disagreeing with me about what I think is obviously the "right" thing to do, it really pisses me off. I'm enjoying reading about this. My fantasy self is calm and unruffled on the outside and Spock-like on the inside. In reality my cheeks flush, my hands and voice shake and I get incoherent.

Please add me to the map!

Hi @Warren When I lived in Melbourne, Australia, in the early 2000s, they made me apply for an Aussie license, which was "75 quid and a photocopy of yer log book, mate." Their phraseology was quite different, more similar to nautical radio than what we do. I suppose things have changed. I still keep my Australian license in my flight bag, it is a book with my certs written in it. Let us know how it goes! I would be really interested to hear how/if things have changed. They used standard units of kts, ft, kg, and litres. I never went to Perth. I flew my family around the outback for 27 days in a Cherokee 180 after getting about 12 hours of dual and then "soloing".

I should say I'll suggest that my mechanic Dave try 70...

Thanks A. I believe the torque spec is 80 in-lb for these. I'll probably try 70 and see if that does it

After removing the o-ring from the 53S valve and making some measurements, I see by the Parker o-ring selector tool that they appear to be 2-014 size code o-ring. That said, I believe Marauder speaks the truth when he says the entire valve should be replaced. I just wish I had bought the right ones first. Live and learn.