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Buley, Just so you have the frame of reference firmly in your mind. For example, you could either have the amp meter labeled with the first order effect - Lower Pitch /Higher Pitch or second order effect Higher RPM/Lower RPM. Since it is engine rpm that I would be primarily interested in, I (if I had a variable pitch prop) might label the meter with Higher RPM/Lower RPM or perhaps Increase RPM/Decrease RPM rather than lower pitch/higher pitch (the latter requires some mental manipulation). Just a point of view.
Ed
----- Original Message ----- From: "Bulent Aliev" <atlasyts@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, May 26, 2006 6:39 AM
Subject: [FlyRotary] Re: Ammeter/Ivo
Kelly, I was thinking mounting it vertical. Low pitch down, High pitch up ? same with the switch.
Buly
On May 26, 2006, at 1:07 AM, Kelly Troyer wrote:
Bulent,
Forgot to note that you need to label one side of the ammeter "pitch increase"
and the other side "pitch decrease"......With a single sweep ammeter you would
not always know where you were in pitch if you forgot which way your switch
was wired ("Now was that up or down for more pitch??")......
--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2
-------------- Original message from keltro@att.net (Kelly royer): --------------
Bulent,
When prop is at midpoint of pitch there is essentially no load on the motor.
When you add pitch the ammeter needle swings one way (from 0 to ? amps).
When you reduce pitch you are reversing polarity of the D.C. motor and it
turns opposite direction and loads the ammeter to the opposite side........
--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2
-------------- Original message from Bulent Aliev <atlasyts@bellsouth.net>: --------------
> I need a second opinion on the ammeter setup for the Ivo prop. John
> Slade is using the centering kind. I think it should be one sweep
> from 0-15 or 0-20A? Anyone else using the same setup, please let me
> know the details.
> Buly
> http://tinyurl.com/dcy36
>
>
>
>
> --
> Homepage: http://www.flyrotary.com/
> Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/
Buly
http://tinyurl.com/dcy36
--
Homepage: http://www.flyrotary.com/
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