2" 12v Turn and Bank

[Stefanovm]

I need one.

[ELT]

I have had this probem twice in 6 years. The first time the cussed gyro failed was soon after I purchsed the airplane. I was fixing the plane to my wants so installed a new gyro from Aricraft Spruce ($1,000) and a stand by vacuum system. I believe in 2 vacuum systems. My mechanic did not suggest putting in an electric AH with ball. Same cost for electic AH as the new T&B and standby and much simpler and reliable. The new T&B really never worked well and quit this year. I purchaed a T&B ($140) from ebay that works great. If you do not have a back up and fly IFR replace the T&B with an electric AH ($2,000).

Good luck

[M20F-1968]

Use a 2" electric AH instead with attach inclinometer. Mid-Continent has one, not cheap but provides more information than a T&B and still electric. Electric artificial horizons are slower in righting themselves from unusual attitudes

so would still keep vacuum AH.

John Breda

[AndyFromCB]

Or you can just go with the two inch RC Allen Digital for $2500, for another $600 you can get a standby battery. I had one in my Arrow and loved it.

[Stefanovm]

Thanks for the suggestions. The failed one was a Garwin, not a typo, a Garwin. It was rebuilt in 1979, wow. Space to make changes is hard to find without a panel upgrade. The Garwin was probably original in 1965. We found a new surplus RC Allen, never installed and it is supposed to be in original packaging. I did not pay 2500, but it is still expensive at 700+. The RC Allen is not the best, according to the avionics shop, but a step newer from the Garwin. The shop does not want to try to overhaul the Garwin. It only lasted 31 years from the last overhaul. The only time this instrument is actually required is IFR, of which I do very little, but the main reason to keep it functioning. I do depend upon the ball and like it right in front of me. The shop said very hard to find one of these as 2" 12v have become scarce due to no one using them. Hopefully this one lasts 30+ years. If it does, that will be past me.They had quite a few 24v.

I have a backup electric AH and inclinometer that is next to the door on the far right of the panel. It is out of my sight and has not worked since I bought the airplane. We placarded it as "inopeartive". My mechanic says its use would not meet the regulations, as sold for experimental use. If I could use the space or needed the 2 lbs removed, it would be gone, It fills a hole.