cdsracing Posted March 11, 2015 Report Posted March 11, 2015 I have a 68C my clock on my control wheel doesn't work where can I get this one fixed or get a new one? Thanks Quote
1964-M20E Posted March 11, 2015 Report Posted March 11, 2015 If you have a good clock repair shop in town they can most likely fix it. There are also several electronic clocks that are available form about $120 on up at aircraft spruce. http://www.aircraftspruce.com/search/search.php?s=clock&x=0&y=0 Quote
Glenn Posted March 11, 2015 Report Posted March 11, 2015 Waltham Aircraft Clock Corp. http://www.walthamclocks.com/repaired mine a few years ago. It still works fine. Also you can search eBay for 8 day aircraft clocks. There are plenty in the $275 range. Quote
sreid Posted March 11, 2015 Report Posted March 11, 2015 There is a shop in Wichita called Jacob's Instrument Service. They repaired my clock and did a very good job. 316-267-7406. Quote
Jerry 5TJ Posted March 11, 2015 Report Posted March 11, 2015 The clock in the yoke not only kept good time, it added about an hour a day. I replaced it with an Aera 560. It keeps good time, and has a few other useful features. Quote
N201MKTurbo Posted March 11, 2015 Report Posted March 11, 2015 I think most instrument shops have the capability to overhaul the clocks. If they don't they will be able to tell you where to take it. I would be a bit hesitant about just buying one off EBay. Clocks like that need periodic service. Having yours serviced is probably a better long term solution. BTW I like the 8 day clocks better then the electronic clocks. The sweep second hand is way better for flying procedure turns and holding patterns then trying to read digits off a computer screen. 1 Quote
HRM Posted March 11, 2015 Report Posted March 11, 2015 A Mooney owner I know told me that he went down to his hangar one day and caught hangar elves dipping his clock into light machine oil, like for sewing machines. He avoided disturbing them and after they finished his clock worked great and has ever since. Apparently they get grody after a couple of decades and the elves knew that a wash down would do the trick. Quote
HRM Posted March 11, 2015 Report Posted March 11, 2015 BTW I like the 8 day clocks better then the electronic clocks. The sweep second hand is way better for flying procedure turns and holding patterns then trying to read digits off a computer screen. Oh the humanity! ...err, I mean the inaccuracy. I will bet that the seconds on those old Breitling/Wakmann yoke clocks are off by at least a millisecond/second. Quote
Mooneymite Posted March 11, 2015 Report Posted March 11, 2015 My POH specifically says for IFR flight: "Clock with sweep second hand". Because I am a total scoff-law, I am still using the Davtron digital clock/timer that was installed in the yoke when I bought it 17 years ago and haven't "up-graded" to a "second hand clock". I haven't been able to get the Davtron to sweep yet, either. Oh, I also use 8 ply tires on my plane! Don't tell the feds. Quote
1964-M20E Posted March 11, 2015 Report Posted March 11, 2015 The FAR do allow for an electronic digital clock. My plane only has the timer in the transponder until I get around to installing the Davtron. Quote
N201MKTurbo Posted March 11, 2015 Report Posted March 11, 2015 I will bet that the seconds on those old Breitling/Wakmann yoke clocks are off by at least a millisecond/second. That would be an 86.4 second error per day. They are much better then that. Quote
DrBill Posted March 11, 2015 Report Posted March 11, 2015 I have not reset the mins on my clock in 2 years.. Only the hours in spring and fall. Bill Quote
M20F Posted March 12, 2015 Report Posted March 12, 2015 The old clock is c Oh the humanity! ...err, I mean the inaccuracy. I will bet that the seconds on those old Breitling/Wakmann yoke clocks are off by at least a millisecond/second. I just find my Wakmann to be just oh so cool. While I love technology just something so great about that clock. Quote
Jerry 5TJ Posted March 12, 2015 Report Posted March 12, 2015 That would be an 86.4 second error per day. They are much better then that. My 1965 original, even when set to "slow" at the edge of its adjustment range, ran about 10 minutes per day fast. TEN MINUTES! That would not be adequate for longitude measurement on an eighteenth century ship. Quote
Hank Posted March 12, 2015 Report Posted March 12, 2015 Wow! My original equipment 1970 clock is a 8-day mechanical windup clock. So I don't know how accurate it is long term. My longest leg to date was 4:40 difference between the red & white hands, and I didn't think to check it against my watch on landing. I always wind it and set it to my watch, then ignore my watch for the rest of the flight. It's even on my checklist. Winding and setting it gives me something to do in the winter while I wait for the fuel from the 3-5 throttle pumps to vaporize before turning the key to start. Quote
N201MKTurbo Posted March 12, 2015 Report Posted March 12, 2015 A fine watch (which is what the wind up clocks are) should be serviced every five years or so. You complain about a clock that probably hasn't been serviced in 40 years. Quote
cdsracing Posted March 12, 2015 Author Report Posted March 12, 2015 Thank you for all your advice Quote
DrRobb Posted March 22, 2015 Report Posted March 22, 2015 I have the original 8 day clock on my 68C. It never worked from the time I bought it, but I finally got tired of looking at it and took it out. Took it to a local jeweler in Tulsa (http://www.jewelsbyjames.com/) and he repaired ti for less than a new one would have cost. There was a delicate shaft that had broken due to a shear force of some kind that he had to remake. I asked him if a particularly rough landing might have caused it and he seemed to think it did. Probably occurred years before I bought her when she was bellied in. Robb Quote
fatter36 Posted April 2, 2015 Report Posted April 2, 2015 Otto Instrument Service in Ontario, CA can repair these clocks Quote
Shadrach Posted April 2, 2015 Report Posted April 2, 2015 LASAR offers a Davtron 800 series with a custom bracket specifically designed for vintage Mooney yokes. I can't find the receipt, but I don't think it was terribly expensive (by aviation standards). It is wired to the ship's dimming buss and has provisions for aural alarm. Wiring diagram attached. Quote
Shadrach Posted April 4, 2015 Report Posted April 4, 2015 A fine watch (which is what the wind up clocks are) should be serviced every five years or so. You complain about a clock that probably hasn't been serviced in 40 years. Our 67F came with a Berco stop watch. Never been serviced, never missed a beat. I will compare it to the davtron once it warms up enough for me to install it Quote
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