Mailing List flyrotary@lancaironline.net Message #38620
From: Joe Ewen <jewen@comporium.net>
Subject: Re: [FlyRotary] EM2/EC2 question/update/vent/etc
Date: Sat, 21 Jul 2007 12:05:40 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Hi Chris,
What type dsub connectors are you using?  IMO the milled barrel type pins are better than stamped pins or solder connectors.  If you are using soldered connectors or the stamped pin, you may want to considered the milled pins.  The best price I have found for these type connectors is from steinair.com.  in bags of 100, they are $0.25 a piece.  The crimpier is $31.00
A dedicated crimpier must be used to properly terminate.  They are a bit more money than the other options, but IMO they are more reliable.
The connector sockets can also be bought from Steinair or mouser.com. 
 
 
Joe
 
 
 
 
----- Original Message -----
From: "Christopher Barber" <CBarber@TexasAttorney.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Saturday, July 21, 2007 12:17 PM
Subject: [FlyRotary] EM2/EC2 question/update/vent/etc

> This may be more of a vent than a real question.  However, if anyone has
> insight, I am willing to listen.  Also, this is NOT a complaint about the
> RWS products.  This IS an admission to my continuing developing skills (or
> lack there of) of wire systems and electrical troubleshooting.  Tracy has
> always been helpful and willing to provide even basic information.  I post
> here first to get the group wisdom and to try to spare Tracy the time as I
> am sure that following his travels, he is currently overwhelmed with work
> and emails....even though he and Laura have been great to respond to
> previous and current concerns previous to this one.  Gee, he is forgoing OSH
> where his presence can provide for the general good of the rotary community.
> Even though it is NOT prevalent on this list, sometimes expressing trouble
> shooting and/or proof of concept questions/concepts/experiences etc. some
> take the opportunity to go "see, that doesn't work" or makes the yet
> uninitiated nervous without realizing that the ability to share online
> OPENLY is one of the best safety devices we've got.
>
> Anyway, My engine is/was running much better now that I have plugged some
> intake leaks.  The auto tune seems to be playing nice.  However, following a
> short engine run two days ago, I went to inspect the engine (FWB in my Velo)
> and when I returned to the cabin, the EM2 was flickering.....then it seemed
> to set itself in the calibration mode (and the bottom row of reading are
> flickering and fading periodically).  I would try to clear it by hitting
> abort and it would flash the main screen for about a second and then return
> to the calibration mode, showing "coolant pressure".  Within the calibration
> mode, the values/modes will change when I press the control buttons as they
> should, however, when I try to get it to the main screen, it goes back to
> the calibration mode. My first thought was a bad/sticking switch/es.  So I
> replaced ALL four switches to no avail, checked the grounds and continuity
> of the wires.  No joy.  Seems too, the being in this mode "calibrated" my
> coolant temperature to zero (doh).
>
> When I started the engine (of course one of the easiest starts to date) in
> this mode, the engine was surging in a rhythmic pattern, even though pretty
> smoothly.
>
> I am a thinkin' that tonight I will re-terminated all the d-sub pins.
>
> Oh well, back to patrol....and then to the hangar (following a brief detour,
> hopefully brief, to the big Houston dog show to support Jana and the dogs
> she is showing.  This is her big hobby and she is usually good about
> supporting the plane)
>
> Thanks.  Thoughts are greatly appreciated.
>
> All the best,
>
> Chris
>
> Christopher Barber
> Attorney and Counselor at Law
> 5110 Bissonnet, No 418
> Bellaire, Texas 77401
>
> Serving the Needs of Senior Texans
>
> 281-464-LAWS (5297)
> 281-754-4168 Fax
>
www.TexasAttorney.net
>
>
> --
> Homepage: 
http://www.flyrotary.com/
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