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Horizon and Clock in the Yak 52

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Scooter

Joined: 10 Jan 2006
Posts: 155

Posted: Fri Feb 17, 2006 12:59 pm Post subject: Horizon and Clock in the Yak 52

Dumb questions:



Anyone know how to operate the right button on the Horizon?  I assume it's a caging knob?  Do you have to cage the horizon in the Yak?



How about the clock?  One button winds the thing.  The other seems to stop it and zero the second hand...  But there are a couple of other little dials...

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PHCarter(at)AOL.COM
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Posted: Fri Feb 17, 2006 6:20 pm Post subject: Horizon and Clock in the Yak 52

Scooter

  

 The right knob is just a push to start button.  I have always assumed that this was centering the gimbles  so spin up is smoother for the gyro.  At times when I have pushed it and the Horizon was quite a bit off from the previous flight, there was mechanical motion within the unit as it centered itself.  Some one else may know better.

  

 The Clock's left knob is for winding the clock as you have found out.  Pull the knob and you can set the clock's time.  The left knob is also the push button for the mission timer (upper sub-dial I think).  The first push starts the mission timer, the second push stops the mission timmer, and the third push reset.  The mission timer only counts minutes, has a 60 min face, and no second hand.

  

 The clock's right knob is both a clock on/off switch, and the control for the stop watch.  Click the knob to the right and the clock turns off.  I guess this is to save the spring winds remaining on the clock for the next flight so something.  I have seen two versions of the clock's stop watch: One version has a second sweep on the big dial working for the stopwatch (not the clock) and the sub-dail for the stopwatch counting the minutes with a 30 minute face., the other version has the second hand on the big dial working for the clock and the stopwatch  sub-dial counting minutes with a 30 minute face.  Both versions were operated with three pushes: 1) start, 2) stop, 3 reset.

  

 Preston

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viperdoc(at)mindspring.co
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Posted: Fri Feb 17, 2006 8:26 pm Post subject: Horizon and Clock in the Yak 52

Uhh..replace the clock with a Narco 122D ILS . Replace the clock with a big ass watch to show off with your niffty green flight suit with all those patches at you next fly-in. That way  you will not  have to be worried about all the knobs on the clock and you will be a 'Babe Magnet" with that big ass watch. 

 Doc

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Rob Rowe

Joined: 10 Jan 2006
Posts: 124
Location: Berkshire, UK

Posted: Sat Feb 18, 2006 5:39 am Post subject: Re: Horizon and Clock in the Yak 52

[quote="PHCarter(at)AOL.COM"]Scooter

 ?

 I have seen two versions of the clock's stop watch: One version has a second sweep on the big dial working for the stopwatch (not the clock) and the sub-dail for the stopwatch counting the minutes with a 30 minute face., the other version has the second hand on the big dial working for the clock and the stopwatch? sub-dial counting minutes with a 30 minute face.? 



FYI - the two versions are the ÐÐ§Ð¡-1 & the ÐÐ§Ð¡-1M;



ÐÐ§Ð¡-1 = second hand operates with clock, stopwatch sub-dial 60 minutes



ÐÐ§Ð¡-1M = second hand operates with stopwatch, stopwatch sub-dial 30 minutes



Rob R

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