Mailing List flyrotary@lancaironline.net Message #2621
From: Haywire <haywire@telus.net>
Subject: RE: [FlyRotary] Re: some progress, and more understanding
Date: Tue, 19 Aug 2003 20:03:30 -0700
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Message
Attached are a couple of pics of my tach divider. It can be set to divide by any number necessary. I can't guarantee it would work with any tach but it works very well with my cheap off-the-shelf-at-any-autoparts-store, Hastings tach. I have a few more if anybody wants one.
 

S. Todd Bartrim
Turbo 13B RV-9Endurance
C-FSTB
http://www3.telus.net/haywire/RV-9/C-FSTB.htm

   "Whatever you vividly imagine, Ardently desire, Sincerely believe in, Enthusiastically act upon, Must inevitably come to pass".

 
The EC-2 tach output has 12 pulses per revolution, and won't directly work with any normal tach.  Todd has made a divider to bring the pulse rate down to normal, and it sounds like it's working well.  The TT that you have expects 1 pulse per rev, so if you don't mind dividing the rpm reading by 12...  :-)

 
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