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Oh. I can see Bill's concern. It might be interesting to measure with
scope.
FWIW, I had toothed wheels cut out with laser cutter years ago. Really
inexpensive.
-al
----- Original Message -----
Sent: Thursday, September 15, 2011 2:14
PM
Subject: [FlyRotary] Re: The good news
and the bad news......
Not side by side-
In the placement described we are talking about them facing each other
with a gap between the faces of 0.100~0.125 and the wheel face between them
like an interrupter between optical sense and receive.
Chrissi
& Randi
www.CozyGirrrl.com
CG Products, Custom
Aircraft Hardware
Chairwomen, Sun-N-Fun Engine Workshop
In a message dated 9/15/2011 4:01:36 P.M. Central Daylight Time,
alwick@juno.com writes:
<concern is that the two sensors may have
interference with each other.
Highly unlikely. I have friends who measure integrity
of signal with oscilloscope. Shielded device with highly directional
sensitivity. Though they've never measured two side by side. Good theory,
though.
-al wick
----- Original Message -----
Sent: Thursday, September 15, 2011
12:18 PM
Subject: [FlyRotary] Re: The good
news and the bad news......
There is nothing
wrong with that idea. The only concern is that the two sensors may have
interference with each other. The idea is to put another toothed wheel
rotated say a random 33.715
degrees relative to the first wheel. Now you place the second sensor
rotated the same 33.7....etc degrees. So now when you switch sensors the
timing is the same. Also the two sensors don't interfere with each
other. Bill Jepson Connected by DROID on
Verizon Wireless
-----Original
message-----
From: Chad
Robinson <crobinson@medialantern.com>
To: Rotary motors
in aircraft <flyrotary@lancaironline.net>
Sent: Thu, Sep
15, 2011 17:45:46 GMT+00:00
Subject: [FlyRotary] Re: The good
news and the bad news......
On 9/15/2011 1:21 PM, Tracy wrote:
The CAS references the crank, not the
rotor. Â Is that. It?
I'm still confused about
something myself. Everybody keeps talking about adding another CAS as
requiring it to be "in a different position", with an offset. My 3rd-gen
CAS sits on a small bracket just behind the toothed wheel on the front
shaft. Past that toothed wheel there's a healthy (from memory: 1.5"?)
gap from there to the back of the alternator pulley. What's to
stop me from making a bracket and putting a second CAS in that gap,
facing backward? It would be in exactly the same position as the current
CAS, just facing backward. Would they interfere with one another? If so,
as an alternative, what about using a second toothed wheel either on top
of the first and before the alternator pulley, or if side loads were a
concern, on the very end of the shaft past the
pulley?
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