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		Dick Maddux
 
 
  Joined: 24 Jun 2008 Posts: 516 Location: Milton, Fl
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				 Posted: Sun Dec 28, 2008 6:20 am    Post subject: Tach: 582 RPM question. | 
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				I had a Cermark tach checker. It wouldn't work,they sent me another and it  wouldn't work either. Finally after the third time and much arguing they sent a  third. It was their new plus version and it works fine. I have a warp drive  prop and it would not register nor would any other prop on the field.  (Cherokees,Cessna,etc) The tach did work well for indicating the frequency of a  fluorescent light though
                                                              Dick Maddux
                                                              Pensacola,Fl
 
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		Roger Lee
 
 
  Joined: 10 Jan 2006 Posts: 1464 Location: Tucson, Az.
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				 Posted: Sun Dec 28, 2008 7:08 am    Post subject: Re: Tach: 582 RPM question. | 
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				Hi Dick,
 
 I couple of things come to mind that may influence your tach.
 If you need to use a piece of reflective tape then make it a little larger. One style of tach I use calls for a 1" wide by 2"-3" long piece of tape.
 You may be too close or too far away.
 The angle of the outside light may be affecting the sensor, try turning the plane around so light hits your target in a different spot.
 
 Just a couple of ideas.
 
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  _________________ Roger Lee
 
Tucson, Az.
 
Rotax Instructor & Rotax IRC
 
Light Sport Repairman 
 
Home 520-574-1080  TRY HOME FIRST
 
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		aerobatics(at)aol.com Guest
 
 
 
 
 
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				 Posted: Sun Dec 28, 2008 8:49 am    Post subject: Tach: 582 RPM question. | 
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				hmmm  I have both versions  and work great  but I found positioning  
 the plane so the sun in in the general area on the opposite of the tach 
 ..  I didn't need reflective tape....  but sounds like a good idea...  
  Mine even worked from the cockpit with the door open.
 
 glad u  got it working
 
 Dave
 
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