REFLECTOR: Starter contactor

Carl Hoffman hoffman3 at rcn.com
Fri Jul 19 05:52:33 CDT 2013 

What about cost?


Sent from my iPad.


On Jul 19, 2013, at 12:17 AM, steve korney <s_korney at hotmail.com> wrote:

> Anyone consider the weight of a 12 volt battery vs. a 24 volt system...?
> 
> 
> 
> Steve 
> 
> Date: Thu, 18 Jul 2013 19:55:28 -0600
> From: scott at tnstaafl.net
> To: reflector at tvbf.org
> Subject: Re: REFLECTOR: Starter contactor
> 
> My ground return is the 5/8 thick wall copper tubing(2) that my oil runs in. My battery and apt wire is a single OO wire. 
> 
> Douglas Holub <douglas.holub at gmail.com> wrote:
> 
> Just out of curiosity, I calculated how much wire weight would be saved by using a 24 volt system vs. a 12 volt system.  
> 
> Assumptions:  0.07 mohm/ft for 00 AWG,  29 mohm/ft for 4 AWG, 10 feet each way from the battery to the starter, 50 amp starter load at 12 volts, 25 starter load at 24 volts.
> 
> With the 12 volt system you would lose 3.5 volts across the starter wires while starting and the wire would weigh 7.5 lbs.
> 
> For the 24 volt system you would lose 3.6 volts and the wire would weigh 2.4 lbs.
> 
> Doug Holub
> 
> 
>   
> 
> 
> On Thu, Jul 18, 2013 at 8:10 AM, David Ullman <ullman at robustdecisions.com> wrote:
> If you are referring to what I call the starter solenoid, mine is on the
> firewall.  I thought that was where most people put them to keep the wire
> weight down.  I have my main in the front.
> 
> 
> David Ullman
> N444DX
> President EAA 292
> 541-760-2338
> david at davidullman.com
> 
> 
> 
> 
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
> Behalf Of reflector-request at tvbf.org
> Sent: Wednesday, July 17, 2013 12:26 PM
> To: reflector at tvbf.org
> Subject: Reflector Digest, Vol 100, Issue 71
> 
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> 
> Today's Topics:
> 
>    1.  Does anyone have their starter contactor on the firewall?
>       (Don Johnston)
>    2. Re:  Does anyone have their starter contactor on the
>       firewall? (Tim Rhodenbaugh)
>    3. Re:  Does anyone have their starter contactor on the
>       firewall? (Don Johnston)
>    4.  Speed Brake (John Dibble)
>    5. Re:  Does anyone have their starter contactor on the
>       firewall? (nmflyer1 at aol.com)
>    6. Re:  Does anyone have their starter contactor on the
>       firewall? (Scott Derrick)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Wed, 17 Jul 2013 13:10:39 -0500
> From: Don Johnston <numa at comcast.net>
> To: reflector at tvbf.org
> Subject: REFLECTOR: Does anyone have their starter contactor on the
>         firewall?
> Message-ID:
>         <CALD29ir2d+_B6u=Ew5U0Ze_+Se2S0UVo7z6oUJe0YkuonF6-WQ at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> I've got the gear pump assembly from Wayne Lanza which has the battery and
> the starter contactor on it.
> 
> I'm looking at the wiring and having to run the B-leads from the alternators
> all the way up to the nose. It occurred to me that I if the starter
> contactor was on the firewall that I could run the alternators to the
> battery side of the starter contactor which would allow me to utilize the
> low gauge wire already in place between the the starter and battery
> contactor.
> 
> But every Velocity that I've looked at has the both contactors in the front.
> 
> Just wondering anyone has their starter contactor on the firewall.
> 
> -Don Johnston
> XL-RG
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> ------------------------------
> 
> Message: 2
> Date: Wed, 17 Jul 2013 14:18:33 -0400
> From: Tim Rhodenbaugh <timrhod at aol.com>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Subject: Re: REFLECTOR: Does anyone have their starter contactor on
>         the     firewall?
> Message-ID: <26CDE257-6421-49A0-AD29-FD026E202CDE at aol.com>
> Content-Type: text/plain;       charset=us-ascii
> 
> It's been done. I put mine on the firewall. Are you sure it's the starter
> contractor on the pump assembly board and not the master contractor?   Tim
> Rhodenbaugh n370TR XLRG
> 
> Sent from my iPad
> 
> On Jul 17, 2013, at 2:10 PM, Don Johnston <numa at comcast.net> wrote:
> 
> > I've got the gear pump assembly from Wayne Lanza which has the battery and
> the starter contactor on it.
> >
> > I'm looking at the wiring and having to run the B-leads from the
> alternators all the way up to the nose. It occurred to me that I if the
> starter contactor was on the firewall that I could run the alternators to
> the battery side of the starter contactor which would allow me to utilize
> the low gauge wire already in place between the the starter and battery
> contactor.
> >
> > But every Velocity that I've looked at has the both contactors in the
> front.
> >
> > Just wondering anyone has their starter contactor on the firewall.
> >
> > -Don Johnston
> > XL-RG
> > _______________________________________________
> > To change your email address, visit
> > http://www.tvbf.org/mailman/listinfo/reflector
> >
> > Visit the gallery!  www.tvbf.org/gallery user:pw = tvbf:jamaicangoose
> > Check new archives: www.tvbf.org/pipermail Check old archives:
> > http://www.tvbf.org/archives/velocity/maillist.html
> 
> 
> 
> ------------------------------
> 
> Message: 3
> Date: Wed, 17 Jul 2013 13:30:11 -0500
> From: Don Johnston <numa at comcast.net>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Subject: Re: REFLECTOR: Does anyone have their starter contactor on
>         the     firewall?
> Message-ID:
>         <CALD29iqf--7FFRExbsu4+XKK8x8jLz_=gs+QVas1rhPGW7i09Q at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> I'm sure. :-)
> 
> http://www.velocity-xl.com/blog/wp-content/uploads/2011/11/2011-11-16-DSC_01
> 40.jpg
> 
> -Don
> 
> On Wed, Jul 17, 2013 at 1:18 PM, Tim Rhodenbaugh <timrhod at aol.com> wrote:
> 
> > It's been done. I put mine on the firewall. Are you sure it's the starter
> > contractor on the pump assembly board and not the master contractor?   Tim
> > Rhodenbaugh n370TR XLRG
> >
> > Sent from my iPad
> >
> > On Jul 17, 2013, at 2:10 PM, Don Johnston <numa at comcast.net> wrote:
> >
> > > I've got the gear pump assembly from Wayne Lanza which has the
> > > battery
> > and the starter contactor on it.
> > >
> > > I'm looking at the wiring and having to run the B-leads from the
> > alternators all the way up to the nose. It occurred to me that I if
> > the starter contactor was on the firewall that I could run the
> > alternators to the battery side of the starter contactor which would
> > allow me to utilize the low gauge wire already in place between the
> > the starter and battery contactor.
> > >
> > > But every Velocity that I've looked at has the both contactors in
> > > the
> > front.
> > >
> > > Just wondering anyone has their starter contactor on the firewall.
> > >
> > > -Don Johnston
> > > XL-RG
> > > _______________________________________________
> > > To change your email address, visit
> > http://www.tvbf.org/mailman/listinfo/reflector
> > >
> > > Visit the gallery!  www.tvbf.org/gallery user:pw =
> > > tvbf:jamaicangoose Check new archives: www.tvbf.org/pipermail Check
> > > old archives: http://www.tvbf.org/archives/velocity/maillist.html
> >
> > _______________________________________________
> > To change your email address, visit
> > http://www.tvbf.org/mailman/listinfo/reflector
> >
> > Visit the gallery!  www.tvbf.org/gallery user:pw = tvbf:jamaicangoose
> > Check new archives: www.tvbf.org/pipermail Check old archives:
> > http://www.tvbf.org/archives/velocity/maillist.html
> >
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> ------------------------------
> 
> Message: 4
> Date: Wed, 17 Jul 2013 13:52:04 -0500
> From: John Dibble <aminetech at bluefrog.com>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Subject: REFLECTOR: Speed Brake
> Message-ID: <51E6E7D4.1050905 at bluefrog.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> A small amount of hydraulic fluid is leaking at the back side of my speed
> brake.  Looking on the inside it seems to originate where the "cylinder"
> connects to the brake.  Does the speed brake use hydraulic fluid?  If so,
> does it come from the retract system, or is it separate?
> 
> Thanks,
> 
> John
> 
> 
> ------------------------------
> 
> Message: 5
> Date: Wed, 17 Jul 2013 15:24:26 -0400 (EDT)
> From: nmflyer1 at aol.com
> To: reflector at tvbf.org
> Subject: Re: REFLECTOR: Does anyone have their starter contactor on
>         the     firewall?
> Message-ID: <8D0513A62DEDC1F-D2C-ACF32 at webmail-d143.sysops.aol.com>
> Content-Type: text/plain; charset="us-ascii"
> 
> 
> Both my contactors are in the nose. Running a condiut ground with the main
> cable running inside that. Alternator wire runs to the contact point on the
> starter where the main cable attaches.
> 
> Note:  2-seperate battery system.
> 
> Kurt
> 
> 
> 
> -----Original Message-----
> From: Don Johnston <numa at comcast.net>
> To: reflector <reflector at tvbf.org>
> Sent: Wed, Jul 17, 2013 12:13 pm
> Subject: REFLECTOR: Does anyone have their starter contactor on the
> firewall?
> 
> 
> I've got the gear pump assembly from Wayne Lanza which has the battery and
> the starter contactor on it.
> 
> I'm looking at the wiring and having to run the B-leads from the alternators
> all the way up to the nose. It occurred to me that I if the starter
> contactor was on the firewall that I could run the alternators to the
> battery side of the starter contactor which would allow me to utilize the
> low gauge wire already in place between the the starter and battery
> contactor.
> 
> But every Velocity that I've looked at has the both contactors in the front.
> 
> 
> Just wondering anyone has their starter contactor on the firewall.
> 
> -Don Johnston
> XL-RG
> 
> 
> _______________________________________________
> o change your email address, visit
> http://www.tvbf.org/mailman/listinfo/reflector
> Visit the gallery!  www.tvbf.org/gallery ser:pw = tvbf:jamaicangoose heck
> new archives: www.tvbf.org/pipermail heck old archives:
> http://www.tvbf.org/archives/velocity/maillist.html
> 
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> ------------------------------
> 
> Message: 6
> Date: Wed, 17 Jul 2013 13:24:35 -0600
> From: Scott Derrick <scott at tnstaafl.net>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Subject: Re: REFLECTOR: Does anyone have their starter contactor on
>         the     firewall?
> Message-ID: <51E6EF73.8080103 at tnstaafl.net>
> Content-Type: text/plain; charset="us-ascii"
> 
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> ------------------------------
> 
> _______________________________________________
> Visit the gallery!  tvbf:jamaicangoose
> 
> End of Reflector Digest, Vol 100, Issue 71
> ******************************************
> 
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> 
> _______________________________________________ To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector Visit the gallery! www.tvbf.org/gallery user:pw = tvbf:jamaicangoose Check new archives: www.tvbf.org/pipermail Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
> _______________________________________________
> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
> 
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