[Public-List] Public-List Digest, Vol 3679, Issue 1
Greenhouse, Matthew A. (GSFC-6650)
matt.greenhouse at nasa.gov
Mon Jul 16 15:29:36 PDT 2018
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:
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> 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
>>
>
>
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