[Public-List] Public-List Digest, Vol 3680, Issue 1

Tue Jul 17 07:02:24 PDT 2018

Marcelo,

The best prop for the A30 with a 1:1 direct drive Atomic 4 is: http://www.atomic4.com/propeller.html

They are hugely popular. With this prop, it's like a different boat. Maneuvering (creeping slowly in/out of a slip or other constrained situation) is vastly improved, as is prop walk. The prop should enable the engine should cruise at the midpoint of its torque curve (2000 rpm for the A4). Atomic 4 installations on heavier boats achieve this using a 2:1 reduction gear. However, the A30s (and many similar boats of that era) came with 1:1 transmissions which were less expensive. The 1:1 setup is fine; however, the choice of prop is more important without the reduction gear. There is little sense in carrying the weight of a 30 hp engine and then choosing a prop that will only enable it to develop 10 hp. The fuel consumption of the Atomic 4 at 2000 rpm is typically 1 gal/hr.  

My $0.02 in the "for what it's worth department".

Cheers,
Matt
Friendship 295

-----Original Message-----
From: Public-List [mailto:public-list-bounces at lists.alberg30.org] On Behalf Of public-list-request at lists.alberg30.org
Sent: Tuesday, July 17, 2018 8:10 AM
To: public-list at lists.alberg30.org
Subject: Public-List Digest, Vol 3680, Issue 1

Send Public-List mailing list submissions to
	public-list at lists.alberg30.org

To subscribe or unsubscribe via the World Wide Web, visit
	http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
or, via email, send a message with subject or body 'help' to
	public-list-request at lists.alberg30.org

You can reach the person managing the list at
	public-list-owner at lists.alberg30.org

When replying, please edit your Subject line so it is more specific than "Re: Contents of Public-List digest..."

Please do NOT include the entire digest in your reply!
======================================================

Today's Topics:

   1. Re: Alternators -- Try a voltmeter! (Gordon Laco)
   2. Re: Alternators -- Try a voltmeter! (Michael)
   3. Re: Alternators -- Try a voltmeter! (Paul Wilson)
   4. Re: Public-List Digest, Vol 3679, Issue 1 (Marcelo D. Gentinetta)

----------------------------------------------------------------------

Message: 1
Date: Mon, 16 Jul 2018 20:40:09 -0400
From: Gordon Laco <mainstay at csolve.net>
To: dans at stmktg.com, Alberg 30 Public List -- open to all
	<public-list at lists.alberg30.org>
Subject: Re: [Public-List] Alternators -- Try a voltmeter!
Message-ID: <6D6C5453-541E-43D2-8BA5-20700DCCC1CA at csolve.net>
Content-Type: text/plain;	charset=utf-8

Right on, Daniel, I?m considering the same thing.  

Gordon Laco
www.gordonlaco.com
#426 Surprise

> On Jul 16, 2018, at 8:37 PM, Daniel Sternglass via Public-List <public-list at lists.alberg30.org> wrote:
> 
> Hello A-30 people,
> 
> Joining in on the battery charging discussion... I replaced my Antique A-30 panel with a new panel 8 years ago, a great investment, though time consuming to install and rewire, plus all the engine sensors...
> 
> The new instrument panel has a volt meter, as do most cars these days. If the alternator is working correctly, and can deliver the rated current, the volt meter is a much more useful instrument. The voltage that each battery charges to (and reads out) gives you an indication of the charge state. It's not perfect, but far simpler and cheaper than a true (but expensive) variable rate charger.
> 
> There are many articles on this subject in the Practical Sailor archives. A small LCD panel-mount DC volt meter is pretty cheap, self powered and very easy to install.
> 
> JMHO :-),
> 
> --Dan S.
> Watcher of the Skies, #201, Cayuga Lake, Ithaca, NY
> 
> dans at stmktg.com
> office: +1607-257-3431
> mobile: +1607-592-8012
> 
> Strategic Marketing Associates
> 403 Highgate Road
> Ithaca, NY 14850
> 
> _______________________________________________
> These businesses support your Association:
> http://www.alberg30.org/store/A30supporters.html
> Please support them.
> _______________________________________________
> Public-List mailing list
> Public-List at lists.alberg30.org
> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org

------------------------------

Message: 2
Date: Tue, 17 Jul 2018 10:11:45 +0000
From: Michael <dickdurk at gmail.com>
To: "Alberg 30 Public List -- open to all"
	<public-list at lists.alberg30.org>
Subject: Re: [Public-List] Alternators -- Try a voltmeter!
Message-ID: <emfe841b99-cc7d-428b-b8fd-e21655422605 at windows-4mp6ooi>
Content-Type: text/plain; format=flowed; charset=utf-8

I was always partial to the ammeter on the original A4. Showing actual loads and charge rates was reassuring-pegged ammeter, look for a short etc.
More complicated wiring though, a shunt being needed through which actual current flowed. Simpler (read cheaper) is why new vehicles have voltmeters.
My "57 Chevy pickup had an ammeter. Of course, it also had the starter motor button mounted on the floorboard-no starter solenoid. Technology marches on...

Michael Grosh
#220

------------------------------

Message: 3
Date: Tue, 17 Jul 2018 06:30:29 -0400
From: Paul Wilson <dcmcrider at gmail.com>
To: Alberg 30 Public List -- open to all
	<public-list at lists.alberg30.org>
Subject: Re: [Public-List] Alternators -- Try a voltmeter!
Message-ID: <A54BCB25-55A2-4AC2-A063-794595F2EF3B at gmail.com>
Content-Type: text/plain;	charset=windows-1251

Even though the alternator may be rated for 30 Amp output, you won't see it approach rated output unless it is connected to a load in the neighborhood of 360-420 W. Ohm's Law and all that. The regulated voltage is approximately 13.8 V. In other words you're going to need a load of known quantity to get accurate max output readings.

Paul, Slainte #129

Sent from my iPad

> On Jul 16, 2018, at 8:40 PM, Gordon Laco via Public-List <public-list at lists.alberg30.org> wrote:
> 
> Right on, Daniel, I?m considering the same thing.  
> 
> Gordon Laco
> www.gordonlaco.com
> #426 Surprise
> 
> 
> 
>> On Jul 16, 2018, at 8:37 PM, Daniel Sternglass via Public-List <public-list at lists.alberg30.org> wrote:
>> 
>> Hello A-30 people,
>> 
>> Joining in on the battery charging discussion... I replaced my Antique A-30 panel with a new panel 8 years ago, a great investment, though time consuming to install and rewire, plus all the engine sensors...
>> 
>> The new instrument panel has a volt meter, as do most cars these days. If the alternator is working correctly, and can deliver the rated current, the volt meter is a much more useful instrument. The voltage that each battery charges to (and reads out) gives you an indication of the charge state. It's not perfect, but far simpler and cheaper than a true (but expensive) variable rate charger.
>> 
>> There are many articles on this subject in the Practical Sailor archives. A small LCD panel-mount DC volt meter is pretty cheap, self powered and very easy to install.
>> 
>> JMHO :-),
>> 
>> --Dan S.
>> Watcher of the Skies, #201, Cayuga Lake, Ithaca, NY
>> 
>> dans at stmktg.com
>> office: +1607-257-3431
>> mobile: +1607-592-8012
>> 
>> Strategic Marketing Associates
>> 403 Highgate Road
>> Ithaca, NY 14850
>> 
>> _______________________________________________
>> These businesses support your Association:
>> http://www.alberg30.org/store/A30supporters.html
>> Please support them.
>> _______________________________________________
>> Public-List mailing list
>> Public-List at lists.alberg30.org
>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> 
> _______________________________________________
> These businesses support your Association:
> http://www.alberg30.org/store/A30supporters.html
> Please support them.
> _______________________________________________
> Public-List mailing list
> Public-List at lists.alberg30.org
> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org

------------------------------

Message: 4
Date: Tue, 17 Jul 2018 07:10:13 -0500
From: "Marcelo D. Gentinetta" <vanguard64 at cox.net>
To: Alberg 30 Public List -- open to all
	<public-list at lists.alberg30.org>
Subject: Re: [Public-List] Public-List Digest, Vol 3679, Issue 1
Message-ID: <FE090FA1-7C3B-4DD4-8EB6-18B8668CFA5F at cox.net>
Content-Type: text/plain;	charset=utf-8

Gordon,
So if I understand your statement correctly, you are a fan of the 2 blade 13 X 8 original prop? This is what I presently have also but at times I have considered a smaller 3 blade prop to prevent ?lugging? and low RPMs.
Marcelo  #441

> On Jul 16, 2018, at 5:35 PM, Gordon Laco via Public-List <public-list at lists.alberg30.org> wrote:
> 
> Well the prop and boat are clean as a whistle? and in heavy weather punching into a head sea or towing another heavier boat, we perform like a tug boat.  The boat has loads of ?grunt?.  
> 
> Fuel economy is superb? engine cooling is well inside the envelope? 
> engine is quiet and smooth.  For most of the past fifty years she had 
> the factory supplied two bladed prop? that gave only 1300 rpm at open 
> throttle? but the boat was a little faster? but noisier due to prop 
> thump (not the engine of course)
> 
> We had a prop with easier pitch that allowed the engine to get up to about 1900 wide open? fuel consumption when through the roof, and maneuvering power was much degraded.  
> 
> I used to teach all that about horsepower when I was on faculty at Georgian Colleges marine tech programme? but the bottom line of course is not how the boat should behave by prediction, rather how she performs in service.
> 
> Gordon Laco
> www.gordonlaco.com
> #426 Surprise
> 
> 
> 
>> On Jul 16, 2018, at 6:29 PM, Greenhouse, Matthew A. (GSFC-6650) via Public-List <public-list at lists.alberg30.org> wrote:
>> 
>> Gordon ? If you can?t turn 2000 rpm in gear, then you have the wrong prop or it is badly fouled with marine growth. At 1200 one develops only about 8 brake horsepower as opposed to 20 at 2000. That will hurt in bad weather. Also, if the engine is in tune and alignment, then it will be smooth and quiet at all speeds. 
>> 
>> Matt
>> Friendship 295
>> 
>> Sent from my iPhone
>> 
>>> On Jul 16, 2018, at 5:43 PM, "public-list-request at lists.alberg30.org" <public-list-request at lists.alberg30.org> wrote:
>>> 
>>> Send Public-List mailing list submissions to  
>>> public-list at lists.alberg30.org
>>> 
>>> To subscribe or unsubscribe via the World Wide Web, visit  
>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>> or, via email, send a message with subject or body 'help' to  
>>> public-list-request at lists.alberg30.org
>>> 
>>> You can reach the person managing the list at  
>>> public-list-owner at lists.alberg30.org
>>> 
>>> When replying, please edit your Subject line so it is more specific 
>>> than "Re: Contents of Public-List digest..."
>>> 
>>> 
>>> Please do NOT include the entire digest in your reply!
>>> ======================================================
>>> 
>>> 
>>> 
>>> Today's Topics:
>>> 
>>> 1. Alternators... (Gordon Laco)
>>> 2. Re: Alternators... (Anders Bro)
>>> 3. Re: Alternators... (Gordon Laco)
>>> 4. Re: Alternators... (Anders Bro)
>>> 5. Re: Alternators... (Gordon Laco)
>>> 6. Re: Alternators... (Anders Bro)
>>> 
>>> 
>>> --------------------------------------------------------------------
>>> --
>>> 
>>> Message: 1
>>> Date: Mon, 16 Jul 2018 16:39:01 -0400
>>> From: Gordon Laco <mainstay at csolve.net>
>>> To: Alberg 30 Public List -- open to all  
>>> <public-list at lists.alberg30.org>
>>> Subject: [Public-List] Alternators...
>>> Message-ID: <9B9C07F2-237E-44EA-A798-7D5365F11AE5 at csolve.net>
>>> Content-Type: text/plain;    charset=utf-8
>>> 
>>> Hello friends?
>>> 
>>> Do any of you have data on what the output curve of our Atomic IV?s alternators will put out at various RPM?s?  
>>> 
>>> I?m looking at Moyer?s modern alternators, and noticed that they give output figures for ?normal operating speed of 2000rpm?.  Well even with the boosted rpm our Campbell prop allows, we still don?t get more than 1500 going flat out? we cruise quietly at 1200.
>>> 
>>> I understand our factory supplied alternators are ?30 amp? but what is it really delivering at real operational rpms?
>>> 
>>> I understand that at lower rpm?s the alternator isn?t ?excited? so delivers little amperage?But I don?t know what the critical rpm rate is to achieve excitement   
>>> 
>>> I don?t understand this whole subject as well as I?d like to.
>>> 
>>> Gordon Laco
>>> #426 Surprise
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> ------------------------------
>>> 
>>> Message: 2
>>> Date: Mon, 16 Jul 2018 16:53:40 -0400
>>> From: Anders Bro <abro.gtu at gmail.com>
>>> To: Alberg 30 Public List -- open to all  
>>> <public-list at lists.alberg30.org>
>>> Subject: Re: [Public-List] Alternators...
>>> Message-ID:
>>>  
>>> <CACEd84sxKZn0RiuosopbPPf4S13k4mjzzaLZ=ieJwcoC93ZjMQ at mail.gmail.com>
>>> Content-Type: text/plain; charset="UTF-8"
>>> 
>>> Ya, but isn't that alternator rpm and not engine speed? Usually the 
>>> pulleys are sized to have alternator rpm higher than engine rpm.
>>> Anders
>>> 
>>> On Jul 16, 2018 4:39 PM, "Gordon Laco via Public-List" < 
>>> public-list at lists.alberg30.org> wrote:
>>> 
>>> Hello friends?
>>> 
>>> Do any of you have data on what the output curve of our Atomic IV?s 
>>> alternators will put out at various RPM?s?
>>> 
>>> I?m looking at Moyer?s modern alternators, and noticed that they 
>>> give output figures for ?normal operating speed of 2000rpm?.  Well 
>>> even with the boosted rpm our Campbell prop allows, we still don?t 
>>> get more than 1500 going flat out? we cruise quietly at 1200.
>>> 
>>> I understand our factory supplied alternators are ?30 amp? but what 
>>> is it really delivering at real operational rpms?
>>> 
>>> I understand that at lower rpm?s the alternator isn?t ?excited? so 
>>> delivers little amperage?But I don?t know what the critical rpm rate 
>>> is to achieve excitement
>>> 
>>> I don?t understand this whole subject as well as I?d like to.
>>> 
>>> Gordon Laco
>>> #426 Surprise
>>> 
>>> 
>>> 
>>> 
>>> _______________________________________________
>>> These businesses support your Association:
>>> http://www.alberg30.org/store/A30supporters.html
>>> Please support them.
>>> _______________________________________________
>>> Public-List mailing list
>>> Public-List at lists.alberg30.org
>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>> 
>>> 
>>> ------------------------------
>>> 
>>> Message: 3
>>> Date: Mon, 16 Jul 2018 16:57:28 -0400
>>> From: Gordon Laco <mainstay at csolve.net>
>>> To: Alberg 30 Public List -- open to all  
>>> <public-list at lists.alberg30.org>
>>> Subject: Re: [Public-List] Alternators...
>>> Message-ID: <2AAE1378-98D2-4A75-A4F0-DA86BA00064D at csolve.net>
>>> Content-Type: text/plain;    charset=utf-8
>>> 
>>> True, but it?s the engine that has the RPM instrument? 
>>> 
>>> Gordon Laco
>>> www.gordonlaco.com
>>> #426 Surprise
>>> 
>>> 
>>> 
>>>> On Jul 16, 2018, at 4:53 PM, Anders Bro via Public-List <public-list at lists.alberg30.org> wrote:
>>>> 
>>>> Ya, but isn't that alternator rpm and not engine speed? Usually the 
>>>> pulleys are sized to have alternator rpm higher than engine rpm.
>>>> Anders
>>>> 
>>>> On Jul 16, 2018 4:39 PM, "Gordon Laco via Public-List" < 
>>>> public-list at lists.alberg30.org> wrote:
>>>> 
>>>> Hello friends?
>>>> 
>>>> Do any of you have data on what the output curve of our Atomic IV?s 
>>>> alternators will put out at various RPM?s?
>>>> 
>>>> I?m looking at Moyer?s modern alternators, and noticed that they 
>>>> give output figures for ?normal operating speed of 2000rpm?.  Well 
>>>> even with the boosted rpm our Campbell prop allows, we still don?t 
>>>> get more than 1500 going flat out? we cruise quietly at 1200.
>>>> 
>>>> I understand our factory supplied alternators are ?30 amp? but what 
>>>> is it really delivering at real operational rpms?
>>>> 
>>>> I understand that at lower rpm?s the alternator isn?t ?excited? so 
>>>> delivers little amperage?But I don?t know what the critical rpm 
>>>> rate is to achieve excitement
>>>> 
>>>> I don?t understand this whole subject as well as I?d like to.
>>>> 
>>>> Gordon Laco
>>>> #426 Surprise
>>>> 
>>>> 
>>>> 
>>>> 
>>>> _______________________________________________
>>>> These businesses support your Association:
>>>> http://www.alberg30.org/store/A30supporters.html
>>>> Please support them.
>>>> _______________________________________________
>>>> Public-List mailing list
>>>> Public-List at lists.alberg30.org
>>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>>> _______________________________________________
>>>> These businesses support your Association:
>>>> http://www.alberg30.org/store/A30supporters.html
>>>> Please support them.
>>>> _______________________________________________
>>>> Public-List mailing list
>>>> Public-List at lists.alberg30.org
>>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>> 
>>> 
>>> 
>>> ------------------------------
>>> 
>>> Message: 4
>>> Date: Mon, 16 Jul 2018 17:21:35 -0400
>>> From: Anders Bro <abro.gtu at gmail.com>
>>> To: Alberg 30 Public List -- open to all  
>>> <public-list at lists.alberg30.org>
>>> Subject: Re: [Public-List] Alternators...
>>> Message-ID:
>>>  
>>> <CACEd84t7K3n3eCvAF0SM+aU_8OgaCCpJ1zNQLeLtRwRSkjefDA at mail.gmail.com>
>>> Content-Type: text/plain; charset="UTF-8"
>>> 
>>> Yes, so multiply that rpm by the pulley ratio to come up with 
>>> alternator rpm, and make your own plot of output vs engine rpm?
>>> 
>>> On Mon, Jul 16, 2018, 4:57 PM Gordon Laco via Public-List < 
>>> public-list at lists.alberg30.org> wrote:
>>> 
>>>> True, but it?s the engine that has the RPM instrument?
>>>> 
>>>> Gordon Laco
>>>> www.gordonlaco.com
>>>> #426 Surprise
>>>> 
>>>> 
>>>> 
>>>>> On Jul 16, 2018, at 4:53 PM, Anders Bro via Public-List <
>>>> public-list at lists.alberg30.org> wrote:
>>>>> 
>>>>> Ya, but isn't that alternator rpm and not engine speed? Usually 
>>>>> the
>>>> pulleys
>>>>> are sized to have alternator rpm higher than engine rpm.
>>>>> Anders
>>>>> 
>>>>> On Jul 16, 2018 4:39 PM, "Gordon Laco via Public-List" < 
>>>>> public-list at lists.alberg30.org> wrote:
>>>>> 
>>>>> Hello friends?
>>>>> 
>>>>> Do any of you have data on what the output curve of our Atomic 
>>>>> IV?s alternators will put out at various RPM?s?
>>>>> 
>>>>> I?m looking at Moyer?s modern alternators, and noticed that they 
>>>>> give output figures for ?normal operating speed of 2000rpm?.  Well 
>>>>> even with
>>>> the
>>>>> boosted rpm our Campbell prop allows, we still don?t get more than 
>>>>> 1500 going flat out? we cruise quietly at 1200.
>>>>> 
>>>>> I understand our factory supplied alternators are ?30 amp? but 
>>>>> what is it really delivering at real operational rpms?
>>>>> 
>>>>> I understand that at lower rpm?s the alternator isn?t ?excited? so
>>>> delivers
>>>>> little amperage?But I don?t know what the critical rpm rate is to 
>>>>> achieve excitement
>>>>> 
>>>>> I don?t understand this whole subject as well as I?d like to.
>>>>> 
>>>>> Gordon Laco
>>>>> #426 Surprise
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> _______________________________________________
>>>>> These businesses support your Association:
>>>>> http://www.alberg30.org/store/A30supporters.html
>>>>> Please support them.
>>>>> _______________________________________________
>>>>> Public-List mailing list
>>>>> Public-List at lists.alberg30.org
>>>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>>>> _______________________________________________
>>>>> These businesses support your Association:
>>>>> http://www.alberg30.org/store/A30supporters.html
>>>>> Please support them.
>>>>> _______________________________________________
>>>>> Public-List mailing list
>>>>> Public-List at lists.alberg30.org
>>>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>>> 
>>>> _______________________________________________
>>>> These businesses support your Association:
>>>> http://www.alberg30.org/store/A30supporters.html
>>>> Please support them.
>>>> _______________________________________________
>>>> Public-List mailing list
>>>> Public-List at lists.alberg30.org
>>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>>> 
>>> 
>>> 
>>> ------------------------------
>>> 
>>> Message: 5
>>> Date: Mon, 16 Jul 2018 17:37:06 -0400
>>> From: Gordon Laco <mainstay at csolve.net>
>>> To: Alberg 30 Public List -- open to all  
>>> <public-list at lists.alberg30.org>
>>> Subject: Re: [Public-List] Alternators...
>>> Message-ID: <B8AA3311-6F99-4642-B15F-32EFC1C2D17E at csolve.net>
>>> Content-Type: text/plain;    charset=utf-8
>>> 
>>> Well that?s all quite logical? but the missing ingredient is the output by the alternator at various rpm.
>>> 
>>> Gordon Laco
>>> www.gordonlaco.com
>>> 
>>> 
>>> 
>>> 
>>>> On Jul 16, 2018, at 5:21 PM, Anders Bro via Public-List <public-list at lists.alberg30.org> wrote:
>>>> 
>>>> Yes, so multiply that rpm by the pulley ratio to come up with 
>>>> alternator rpm, and make your own plot of output vs engine rpm?
>>>> 
>>>> On Mon, Jul 16, 2018, 4:57 PM Gordon Laco via Public-List < 
>>>> public-list at lists.alberg30.org> wrote:
>>>> 
>>>>> True, but it?s the engine that has the RPM instrument?
>>>>> 
>>>>> Gordon Laco
>>>>> www.gordonlaco.com
>>>>> #426 Surprise
>>>>> 
>>>>> 
>>>>> 
>>>>>> On Jul 16, 2018, at 4:53 PM, Anders Bro via Public-List <
>>>>> public-list at lists.alberg30.org> wrote:
>>>>>> 
>>>>>> Ya, but isn't that alternator rpm and not engine speed? Usually 
>>>>>> the
>>>>> pulleys
>>>>>> are sized to have alternator rpm higher than engine rpm.
>>>>>> Anders
>>>>>> 
>>>>>> On Jul 16, 2018 4:39 PM, "Gordon Laco via Public-List" < 
>>>>>> public-list at lists.alberg30.org> wrote:
>>>>>> 
>>>>>> Hello friends?
>>>>>> 
>>>>>> Do any of you have data on what the output curve of our Atomic 
>>>>>> IV?s alternators will put out at various RPM?s?
>>>>>> 
>>>>>> I?m looking at Moyer?s modern alternators, and noticed that they 
>>>>>> give output figures for ?normal operating speed of 2000rpm?.  
>>>>>> Well even with
>>>>> the
>>>>>> boosted rpm our Campbell prop allows, we still don?t get more 
>>>>>> than 1500 going flat out? we cruise quietly at 1200.
>>>>>> 
>>>>>> I understand our factory supplied alternators are ?30 amp? but 
>>>>>> what is it really delivering at real operational rpms?
>>>>>> 
>>>>>> I understand that at lower rpm?s the alternator isn?t ?excited? 
>>>>>> so
>>>>> delivers
>>>>>> little amperage?But I don?t know what the critical rpm rate is to 
>>>>>> achieve excitement
>>>>>> 
>>>>>> I don?t understand this whole subject as well as I?d like to.
>>>>>> 
>>>>>> Gordon Laco
>>>>>> #426 Surprise
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> _______________________________________________
>>>>>> These businesses support your Association:
>>>>>> http://www.alberg30.org/store/A30supporters.html
>>>>>> Please support them.
>>>>>> _______________________________________________
>>>>>> Public-List mailing list
>>>>>> Public-List at lists.alberg30.org
>>>>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>>>>> _______________________________________________
>>>>>> These businesses support your Association:
>>>>>> http://www.alberg30.org/store/A30supporters.html
>>>>>> Please support them.
>>>>>> _______________________________________________
>>>>>> Public-List mailing list
>>>>>> Public-List at lists.alberg30.org
>>>>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>>>> 
>>>>> _______________________________________________
>>>>> These businesses support your Association:
>>>>> http://www.alberg30.org/store/A30supporters.html
>>>>> Please support them.
>>>>> _______________________________________________
>>>>> Public-List mailing list
>>>>> Public-List at lists.alberg30.org
>>>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>>>> 
>>>> _______________________________________________
>>>> These businesses support your Association:
>>>> http://www.alberg30.org/store/A30supporters.html
>>>> Please support them.
>>>> _______________________________________________
>>>> Public-List mailing list
>>>> Public-List at lists.alberg30.org
>>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>> 
>>> 
>>> 
>>> ------------------------------
>>> 
>>> Message: 6
>>> Date: Mon, 16 Jul 2018 17:42:49 -0400
>>> From: Anders Bro <abro.gtu at gmail.com>
>>> To: Alberg 30 Public List -- open to all  
>>> <public-list at lists.alberg30.org>
>>> Subject: Re: [Public-List] Alternators...
>>> Message-ID:
>>>  
>>> <CACEd84v1VXz1Mnm36vK9v=9bBY2mRfCKuJhQBbXXhK8BYfPWFA at mail.gmail.com>
>>> Content-Type: text/plain; charset="UTF-8"
>>> 
>>> Oops, I thought you had that :-( sorry about that. Maybe get it from 
>>> Delco, or whoever the mfg is??
>>> 
>>> On Mon, Jul 16, 2018, 5:37 PM Gordon Laco via Public-List < 
>>> public-list at lists.alberg30.org> wrote:
>>> 
>>>> Well that?s all quite logical? but the missing ingredient is the 
>>>> output by the alternator at various rpm.
>>>> 
>>>> Gordon Laco
>>>> www.gordonlaco.com
>>>> 
>>>> 
>>>> 
>>>> 
>>>>> On Jul 16, 2018, at 5:21 PM, Anders Bro via Public-List <
>>>> public-list at lists.alberg30.org> wrote:
>>>>> 
>>>>> Yes, so multiply that rpm by the pulley ratio to come up with 
>>>>> alternator rpm, and make your own plot of output vs engine rpm?
>>>>> 
>>>>> On Mon, Jul 16, 2018, 4:57 PM Gordon Laco via Public-List < 
>>>>> public-list at lists.alberg30.org> wrote:
>>>>> 
>>>>>> True, but it?s the engine that has the RPM instrument?
>>>>>> 
>>>>>> Gordon Laco
>>>>>> www.gordonlaco.com
>>>>>> #426 Surprise
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>>> On Jul 16, 2018, at 4:53 PM, Anders Bro via Public-List <
>>>>>> public-list at lists.alberg30.org> wrote:
>>>>>>> 
>>>>>>> Ya, but isn't that alternator rpm and not engine speed? Usually 
>>>>>>> the
>>>>>> pulleys
>>>>>>> are sized to have alternator rpm higher than engine rpm.
>>>>>>> Anders
>>>>>>> 
>>>>>>> On Jul 16, 2018 4:39 PM, "Gordon Laco via Public-List" < 
>>>>>>> public-list at lists.alberg30.org> wrote:
>>>>>>> 
>>>>>>> Hello friends?
>>>>>>> 
>>>>>>> Do any of you have data on what the output curve of our Atomic 
>>>>>>> IV?s alternators will put out at various RPM?s?
>>>>>>> 
>>>>>>> I?m looking at Moyer?s modern alternators, and noticed that they 
>>>>>>> give output figures for ?normal operating speed of 2000rpm?.  
>>>>>>> Well even with
>>>>>> the
>>>>>>> boosted rpm our Campbell prop allows, we still don?t get more 
>>>>>>> than 1500 going flat out? we cruise quietly at 1200.
>>>>>>> 
>>>>>>> I understand our factory supplied alternators are ?30 amp? but 
>>>>>>> what is
>>>> it
>>>>>>> really delivering at real operational rpms?
>>>>>>> 
>>>>>>> I understand that at lower rpm?s the alternator isn?t ?excited? 
>>>>>>> so
>>>>>> delivers
>>>>>>> little amperage?But I don?t know what the critical rpm rate is 
>>>>>>> to
>>>> achieve
>>>>>>> excitement
>>>>>>> 
>>>>>>> I don?t understand this whole subject as well as I?d like to.
>>>>>>> 
>>>>>>> Gordon Laco
>>>>>>> #426 Surprise
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> _______________________________________________
>>>>>>> These businesses support your Association:
>>>>>>> http://www.alberg30.org/store/A30supporters.html
>>>>>>> Please support them.
>>>>>>> _______________________________________________
>>>>>>> Public-List mailing list
>>>>>>> Public-List at lists.alberg30.org
>>>>>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>>>>>> _______________________________________________
>>>>>>> These businesses support your Association:
>>>>>>> http://www.alberg30.org/store/A30supporters.html
>>>>>>> Please support them.
>>>>>>> _______________________________________________
>>>>>>> Public-List mailing list
>>>>>>> Public-List at lists.alberg30.org
>>>>>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>>>>> 
>>>>>> _______________________________________________
>>>>>> These businesses support your Association:
>>>>>> http://www.alberg30.org/store/A30supporters.html
>>>>>> Please support them.
>>>>>> _______________________________________________
>>>>>> Public-List mailing list
>>>>>> Public-List at lists.alberg30.org
>>>>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>>>>> 
>>>>> _______________________________________________
>>>>> These businesses support your Association:
>>>>> http://www.alberg30.org/store/A30supporters.html
>>>>> Please support them.
>>>>> _______________________________________________
>>>>> Public-List mailing list
>>>>> Public-List at lists.alberg30.org
>>>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>>> 
>>>> _______________________________________________
>>>> These businesses support your Association:
>>>> http://www.alberg30.org/store/A30supporters.html
>>>> Please support them.
>>>> _______________________________________________
>>>> Public-List mailing list
>>>> Public-List at lists.alberg30.org
>>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>>> 
>>> 
>>> 
>>> ------------------------------
>>> 
>>> Subject: Digest Footer
>>> 
>>> _______________________________________________
>>> These businesses support your Association:
>>> http://www.alberg30.org/store/A30supporters.html
>>> Please support them.
>>> _______________________________________________
>>> Public-List mailing list
>>> Public-List at lists.alberg30.org
>>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
>>> 
>>> 
>>> ------------------------------
>>> 
>>> End of Public-List Digest, Vol 3679, Issue 1
>>> ********************************************
>> _______________________________________________
>> These businesses support your Association:
>> http://www.alberg30.org/store/A30supporters.html
>> Please support them.
>> _______________________________________________
>> Public-List mailing list
>> Public-List at lists.alberg30.org
>> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org
> 
> _______________________________________________
> These businesses support your Association:
> http://www.alberg30.org/store/A30supporters.html
> Please support them.
> _______________________________________________
> Public-List mailing list
> Public-List at lists.alberg30.org
> http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org

------------------------------

Subject: Digest Footer

_______________________________________________
These businesses support your Association:
http://www.alberg30.org/store/A30supporters.html
Please support them.
_______________________________________________
Public-List mailing list
Public-List at lists.alberg30.org
http://lists.alberg30.org/listinfo.cgi/public-list-alberg30.org

------------------------------

End of Public-List Digest, Vol 3680, Issue 1
********************************************