[TheForge] Little Giant / pulley / rpm / ???

[Dave Mudge]

Well, lets expand on the original question.
Given I would want the end result to be about 375 rpm.
Also given that I have a 1725 rpm input (motor)
and the final drive is a 10" pulley, what size pulley
would I need to put on the motor?
Also,,, as one addresses the hammer from the front,
which direction should the crank plate turn? clockwise or counter-clockwise?
thanks, everyone for all of your input...
dave m

On Thu, Mar 19, 2015 at 12:48 PM, Dave Mudge <dave at magichammer.net> wrote:

> that sounds like Mr. Clifton. What a great character.
> I have seen his power hammer vcr's
>
> dave m
>
> On Thu, Mar 19, 2015 at 10:41 AM, Bob <blcksmth at wcnet.org> wrote:
>
>>     Many years ago at S.O.F.A. I asked Clifton Ralph how fast a power
>> hammer needed to run. I was building a line shaft driven shop.
>> After about a 45 minute lecture about everything except my question he
>> asked me "How fast do you want to hammer?" Class over.
>>
>> Bob Willman
>> The Eagle's Anvil
>> Bowling Green, Ohio
>> WB8NQW
>>
>> Freedom is a fragile thing and is never more than a generation
>> away from extinction. It is not ours by inheritance; it must be
>> fought for and defended constantly by each generation, for it
>> comes only once to a people. Those who have known freedom and
>> then lost it have never known it again.
>>
>> Ronald Reagan
>>
>> On 3/19/2015 11:09 AM, David E. Smucker wrote:
>>
>>> Dave,  I believe this number to be correct,  It is slow for a 25 # Little
>>> Giant -- most were set up to run between 350 to 400, 375 being a good
>>> number.  Remember these hammer were built mostly for drawing out and for
>>> drawing out plow points as their bread and butter job.  The high beats
>>> per
>>> minute work great with the lower weight hammer of the 25 #.  Force = 1/2
>>> mv^2.  So while the mass is low in the 25# LG the velocity is high and
>>> it is
>>> squared.  Ever see Jerry Darnell hammer -- light hammer very high beats
>>> per
>>> minute, really moves the metal.
>>>
>>> Speed the hammer up.
>>>
>>> Dave Smucker
>>> Brasstown, NC
>>>
>>> -----Original Message-----
>>> From: TheForge [mailto:theforge-bounces at mailman.qth.net] On Behalf Of
>>> Bob
>>> Sent: Wednesday, March 18, 2015 11:24 PM
>>> To: Blacksmithing List Sponsored by ABANA
>>> Subject: Re: [TheForge] Little Giant / pulley / rpm / ???
>>>
>>>       1725 divided by 5 = 345
>>>       345 times 8 = 2760
>>>       2760 divided by 10 = 276
>>>
>>> Bob Willman
>>> The Eagle's Anvil
>>> Bowling Green, Ohio
>>> WB8NQW
>>>
>>> Freedom is a fragile thing and is never more than a generation away from
>>> extinction. It is not ours by inheritance; it must be fought for and
>>> defended constantly by each generation, for it comes only once to a
>>> people.
>>> Those who have known freedom and then lost it have never known it again.
>>>
>>> Ronald Reagan
>>>
>>> On 3/18/2015 11:06 PM, Dave Mudge wrote:
>>>
>>>> Good evening kids,
>>>> I am setting up a nice 25# Little Giant hammer and i have some
>>>> questions.
>>>> This hammer came with a 1-1/2 hp. motor connected to a speed reducer.
>>>> The motor turns at 1725 rpm, connected to a reducer that is 5:1. The
>>>> output of the reducer is connected to an 8" flat belt pulley and the
>>>> hammer has a 10" flat belt pulley..........
>>>> Of course the question is, How fast will the hammer be turning if I
>>>> use this set up?
>>>> I don't recall ever seeing a hammer set up in such a fashion, on the
>>>> other hand I haven't seen everything by a long shot. So why do you
>>>> think that the hammer was set up like this?
>>>> In the book, "The Little Giant Powerhammer" by Richard Kern it says
>>>> that the speed should be around 375 rpm.
>>>>
>>>> Thanks,
>>>> dave m
>>>>
>>>>  ______________________________________________________________
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