X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-02.southeast.rr.com ([24.25.9.101] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1131018 for flyrotary@lancaironline.net; Sun, 28 May 2006 13:57:37 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.25.9.101; envelope-from=eanderson@carolina.rr.com Received: from edward2 (cpe-024-074-111-186.carolina.res.rr.com [24.74.111.186]) by ms-smtp-02.southeast.rr.com (8.13.6/8.13.6) with SMTP id k4SHunT4006980 for ; Sun, 28 May 2006 13:56:51 -0400 (EDT) Message-ID: <000b01c68280$1c62f570$2402a8c0@edward2> From: "Ed Anderson" To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: Wiring Techniques was [FlyRotary] Re: Anothercase of heat-soaked coils? Date: Sun, 28 May 2006 13:56:56 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0008_01C6825E.94FB6D40" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2869 X-Virus-Scanned: Symantec AntiVirus Scan Engine This is a multi-part message in MIME format. ------=_NextPart_000_0008_01C6825E.94FB6D40 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Re: [FlyRotary] Wiring Techniques was [FlyRotary] Re: Another case of = heat-soaked coils?Not something that I have tried, Don. Looks like it = could be best of both worlds {:>). That way you would not have to take = the screw all the way out (and risk dropping it into one of those = wormholes where you can never find it), but still would not let the = terminal just drop out because the screw was not tight. Ed ----- Original Message -----=20 From: Don Solomon=20 To: Rotary motors in aircraft=20 Sent: Sunday, May 28, 2006 11:59 AM Subject: [FlyRotary] Re: Wiring Techniques was [FlyRotary] Re: = Anothercase of heat-soaked coils? Something I do is cut the eye terminal to look like a question mark = [?]. That way it is more secure than just a "U" terminal. Don Solomon Cozy #1169 Durango, CO (DRO) http://www.maddyhome.com/canardpages/pages/triptrish/index.html -------------------------------------------------------------------------= ----- From: "Ed Anderson" Reply-To: "Rotary motors in aircraft" Date: Sun, 28 May 2006 11:42:08 -0400 To: "Rotary motors in aircraft" Subject: [FlyRotary] Wiring Techniques was [FlyRotary] Re: Another = case of heat-soaked coils? I use the same basic technique as outlined by Tracy. I crimp, then = solder, then place a shrink wrap around each terminal to wire connection = area. I then wrap the cable in some type of abrasion resistant cover (I = like the split corrugated plastic tubes make for this) . Then Adel = clamps to relive stress of the entire cable package.=20 Also When terminals are called for I almost always use those terminals = with the a "closed" loop for the screw. In other words, I do not use = terminals that are shaped like a "U". The reason is that should the = terminal screw be just a bit loose the connector could drop out. With = the close connector the screw has to back all the way out for the = terminal drops away from the connection - just might give you time to = notice a loose screw. The only down side, is if you do need to = disconnect it you have to take the screw all the way out which can be a = pain if you have many to undo. Thus far, I have not had a loose connection or other electrical = problem of any type (due to wiring or connectors). In fact, the only = electrical problem I have had was when the bias resistor in the base of = the leading coil burnt out early on in testing - replaced it with a 10 = watt resistor and all has been well. =20 Ed Ed Anderson Rv-6A N494BW Rotary Powered Matthews, NC eanderson@carolina.rr.com ----- Original Message -----=20 =20 From: Tracy Crook =20 =20 To: Rotary motors in aircraft =20 =20 Sent: Sunday, May 28, 2006 11:00 AM =20 Subject: [FlyRotary] Re: Another case of heat-soaked coils? =20 =20 =20 First, DON"T EVER attempt to stress relieve a wire junction bundle = with Silicone Rubber RTV! It cures with acetic acid which corrodes = electrical connections!!!! =20 =20 =20 =20 Stress relieving wires is potentially a long subject so I'll have to = reduce it to basic principle. In most cases, the concentrated stress = with soldered connectors is a red herring argument (having no basis). = Connectors generally have integral stress relief features built into = the backshell which prevent stress from vibration & cable movement from = reaching the point in the wire that has solder wicking into the = strands. I usually go one step further and put a piece of heat shrink = sleeving over the wire bundle where it leaves the connector. =20 =20 =20 =20 There are innumerable other methods of stress relieving wires. = Adel clamps, wire lacing cord, and tie wraps are the most common. Just = keep vibration from causing wire to flop around - That's the whole = basis of stress relief in electrical work. =20 ----- Original Message -----=20 =20 From: Thomas y Reina Jakits =20 =20 To: Rotary motors in aircraft = =20 =20 Sent: Saturday, May 27, 2006 3:36 PM =20 Subject: [FlyRotary] Re: Another case of heat-soaked coils? =20 =20 Tracy, =20 =20 would you be so kind and elaborate on your way to do "stress = relief" on solder/wire/cable joints? =20 =20 Thanx TJ ----- Original Message -----=20 =20 From: Tracy Crook =20 =20 To: Rotary motors in aircraft = =20 =20 Sent: Friday, May 26, 2006 9:41 PM =20 Subject: [FlyRotary] Re: Another case of heat-soaked coils? =20 =20 =20 Thought the coils were a long shot. =20 =20 =20 I'm still not sure where the connection that failed was = (connector contact or the unknown connection at the end of the pigtail = left by cutting the connector off the Mazda harness) but I do like = treating all connector contacts with a corrosion inhibitor. My = favorite is Corrosion X. I like soldered connections for this reason = too. I'll do my own stress relief to get it away from the potential = stiff connection at the solder joint. To each his own though. =20 =20 =20 Tracy (Granddaughter gone for the summer, Aahhhh.......... = : )=20 =20 ----- Original Message -----=20 =20 From: Thomas y Reina Jakits =20 =20 To: Rotary motors in aircraft = =20 =20 Sent: Friday, May 26, 2006 8:54 PM =20 Subject: [FlyRotary] Re: Another case of heat-soaked coils? =20 Get some SP-400! If you fancy it, mask the to be treated area - then aply a = thin coat (shake the can really well and repeat often...). Get over any all connectors that are suspect to moisture. It will form a thin wax like coat. Re-apply at least one more = time after a couple of hours or overnight. Areas that are really in the "wet" you should apply up to 5 = coats. It takes a while to do a good job, but: It is transparent - you alway see the connection The coat gets a little harder with time, but always stays = flexible It made my day on a Bell-47 for 3 month on the ocean!! TJ ----- Original Message -----=20 From: "John Slade" To: "Rotary motors in aircraft" Sent: Friday, May 26, 2006 11:31 AM Subject: [FlyRotary] Re: Another case of heat-soaked coils? > Well it wasn't the coils after all. > Florida humidity had gotten to one of my crank angle sensor = connectors. > Problem solved. > Coils returned. > $206 back in my pocket. > Life is good > John > > -- > Homepage: http://www.flyrotary.com/ > Archive and UnSub: = http://mail.lancaironline.net/lists/flyrotary/ -- Homepage: http://www.flyrotary.com/ Archive and UnSub: = http://mail.lancaironline.net/lists/flyrotary/ ------=_NextPart_000_0008_01C6825E.94FB6D40 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Re: [FlyRotary] Wiring Techniques was [FlyRotary] Re: = Another case of heat-soaked coils?
Not something that I have tried, Don.  = Looks like it=20 could be best of both worlds {:>).  That way you would not have = to take=20 the screw all the way out (and risk dropping it into one of those = wormholes=20 where you can never find it), but still would not let the terminal just = drop out=20 because the screw was not tight.
 
Ed
----- Original Message -----
From:=20 Don=20 Solomon
Sent: Sunday, May 28, 2006 = 11:59 AM
Subject: [FlyRotary] Re: Wiring = Techniques was [FlyRotary] Re: Anothercase of heat-soaked coils?

Something I do=20 is cut the eye terminal to look like a question mark [?]. That way it = is more=20 secure than just a =93U=94 terminal.


Don Solomon
Cozy=20 #1169
Durango, CO (DRO)
= http://www.maddyhome.com/canardpages/pages/triptrish/index.html


From: "Ed Anderson" <eanderson@carolina.rr.com&g= t;
Reply-To:=20 "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Date:=20 Sun, 28 May 2006 11:42:08 -0400
To: "Rotary motors in = aircraft"=20 <flyrotary@lancaironline.net>
Subject: [FlyRotary] = Wiring=20 Techniques was [FlyRotary] Re: Another case of heat-soaked=20 coils?

I use the same basic technique as outlined = by Tracy.=20  I crimp, then solder, then place a shrink wrap around each = terminal to=20 wire connection area.  I then wrap the cable in some type of = abrasion=20 resistant cover (I like the split corrugated plastic tubes make for = this) .=20   Then Adel clamps to relive stress of the entire cable = package.=20

Also When terminals are called for I almost = always use=20 those terminals with the a "closed" loop for the screw.  In other = words,=20 I do not use terminals that are shaped like a "U".  The reason is = that=20 should the terminal screw be just a bit loose the connector could drop = out.=20  With the close connector the screw has to back all the way out = for the=20 terminal drops away from the connection - just might give you time to = notice a=20 loose screw.  The only down side, is if you do need to disconnect = it you=20 have to take the screw all the way out which can be a pain if you have = many to=20 undo.

Thus far, I have not had a loose connection = or other=20 electrical problem of any type (due to wiring or connectors).  In = fact,=20 the only electrical problem I have had was when the bias resistor in = the base=20 of the leading coil burnt out early on in testing - replaced it with a = 10 watt=20 resistor and all has been well.

 
Ed

Ed Anderson
Rv-6A N494BW Rotary=20 Powered
Matthews, = NC
eanderson@carolina.rr.com

-----=20 Original Message -----
 
From:  Tracy Crook = <mailto:lors01@msn.com>=20  
 
To: Rotary motors in aircraft <mailto:flyrotary@lancairo= nline.net>=20  
 
Sent: Sunday, May 28, 2006 11:00=20 AM
 
Subject: [FlyRotary] Re: Another case of=20  heat-soaked = coils?
 

 
 
First,=20  DON"T EVER attempt to stress relieve a wire junction =  bundle with=20 Silicone Rubber RTV!  It cures with acetic acid which =  corrodes=20 electrical=20 = connections!!!!

 
 
 
 
Stress= =20 relieving wires is potentially a long subject so I'll have to =  reduce=20 it to basic principle.   In most cases, the concentrated=20  stress with soldered connectors is a red herring argument = (having no=20  basis).  Connectors generally have integral stress relief = features  built into the backshell which prevent stress from = vibration=20 & cable  movement from reaching the point in the wire that = has=20 solder wicking into the  strands.  I usually go one step = further=20 and put a piece of heat shrink  sleeving over the wire bundle = where it=20 leaves the connector.=20    
 
 
 
There are = innumerable=20 other methods of stress relieving  wires.   Adel = clamps, wire=20 lacing cord, and tie wraps are the  most common.  Just = keep=20 vibration from causing wire to flop around -  That's the whole = basis of=20 stress relief in electrical work.
 

-----=20 Original Message -----
 
From: Thomas y Reina = Jakits <mailto:rijakits@cwpanama.net>= ;=20  
 
To: Rotary motors in aircraft <mailto:flyrotary@lancairo= nline.net>=20   
 
Sent: Saturday, May 27, 2006 3:36 =  PM
 
Subject: [FlyRotary] Re: Another case =  of heat-soaked = coils?
 

 
Tracy,

 
 
would = you be so kind=20 and elaborate on your way  to do "stress relief" on = solder/wire/cable=20 joints?

 
 
Thanx=20 TJ

-----=20 Original Message -----
 
From:  Tracy=20  Crook <mailto:lors01@msn.com> =  
 
To: Rotary motors in aircraft <mailto:flyrotary@lancairo= nline.net>=20   
 
Sent: Friday, May 26, 2006 9:41 =  PM
 
Subject: [FlyRotary] Re: Another = case=20  of heat-soaked = coils?
 

 
 
Thought=20 the coils were a long shot.
 
 
 
I'm = still=20 not sure where the connection that failed was (connector =  contact=20 or the unknown connection at the end of the pigtail left by=20  cutting the connector off the Mazda harness) but I do like = treating all  connector contacts with a corrosion = inhibitor.=20  My favorite is  Corrosion X.   I like = soldered=20 connections for this reason  too.  I'll do my own = stress=20 relief to get it away from the potential  stiff connection = at the=20 solder joint.  To each his own=20 though.
 
 
 
Tracy =  (Granddaughter gone=20 for the  summer,     Aahhhh.......... : = )=20
 

-----=20 Original Message -----
 
From: Thomas y = Reina=20 Jakits <mailto:rijakits@cwpanama.net>= ;=20  
 
To: Rotary motors in aircraft <mailto:flyrotary@lancairo= nline.net>=20   
 
Sent: Friday, May 26, 2006 = 8:54=20  PM
 
Subject: [FlyRotary] Re: Another=20  case of heat-soaked coils?
 

Get some=20 SP-400!

If you fancy it, mask the to be  treated = area -=20 then aply a thin coat (shake
the can really well and =  repeat=20 often...).
Get over any all connectors that are suspect to=20  moisture.
It will form a thin wax like coat. Re-apply = at=20 least one  more time after a
couple of hours or=20 overnight.
Areas that are  really in the "wet" you = should=20 apply up to 5 coats.
It takes a while  to do a good = job,=20 but:
It is transparent - you alway see the =  connection
The=20 coat gets a little harder with time, but always stays=20  flexible

It made my day on a Bell-47 for 3 month = on the=20  ocean!!

TJ

----- Original Message ----- =
From:=20 "John  Slade" <sladerj@bellsouth.net>
To: =  "Rotary=20 motors in aircraft" = <flyrotary@lancaironline.net>
Sent:=20  Friday, May 26, 2006 11:31 AM
Subject: [FlyRotary] = Re:=20 Another case  of heat-soaked coils?


> Well = it=20 wasn't the coils after  all.
> Florida humidity had = gotten=20 to one of my crank angle sensor  connectors.
> = Problem=20 solved.
> Coils returned.
> $206  back in my=20 pocket.
> Life is good
> John
>
>=20  --
> Homepage:  http://www.flyrotary.com/
> =  Archive and UnSub:   http://mail.lanca= ironline.net/lists/flyrotary/


--
Homepage:=20   http://www.flyrotary.com/
Archi= ve=20  and UnSub:   http://mail.lanca= ironline.net/lists/flyrotary/

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