Power Hammer Ram speed Help! Please

Aktoklat,

I don't know anything about your hammer. Sid and Keri at Little Giant will, for sure. I got a catalog reprint for Fairbanks hammers from them and they may be able to provide you with one for your hammer or point you to someone who can. One of the tables in my catalog listed max. bpm and motor hp. and belt size.

I don't think you are going to find a 2" dia. x 4" long flat belt pulley... if I understood that.

I'm curious... is your hammer a Fairbanks copy, like Little Giant, Myers, etc.? Does it have a Little Giant type clutch?... like, it runs on hard and fast belt... or is it a Fairbanks type clutch where where the belt is tightened to act as a clutch?

Is the 8" middle pulley part of the original design or an add on ?

The old hammer motors were generally low rpm types. To match spec. bpm, a person is actually better off looking for a low rpm motor rather than switching pulley sizes around. Sometimes, to match spec. bpm with a common rpm modern motor, a person needs to run a jack shaft system... especially if you either have to, or want to run a flat belt. If I hadn't run into a cheap, used low rpm motor for our Fairbanks, I would have had to do that to match the 375max. bpm. The reason is, a Fairbanks has to run a flat belt and the belt needs to be stout because its is the clutch, therefore has to be both stout and stretch free (or nearly so). About the smallest dia. flat belt pulley for a 2" belt is 4" in diam. Flat belts don't deal with sharp turns well. Looking at 375bpm and a 12.5" drive wheel and a minimum 4" dia. motor pulley, the motor would need to be 1170 rpm. With a 5" pulley, the motor speed would need to be 937rpm. Anyhow, a jack pulley system gears the existing motor speed (modern 1725-1750) down to the bpm needed... small to large and small to large. In our case, we would have run motor to #1 jack pulley as double "V" belt and #2 jack pulley to drive wheel as flat belt.

Mike
 
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Mike, the hammer is very similar in design to the Little Giant and runs with a belt that drives the clutch pulley.
The photo of the PH above should help answer questions. Beside the power hammer is my 50 Lb Little Giiant guarded by Crickett my 60 Lb female Lab.
 
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If the little hammer is a 50. IMO, the big one can't be a 50.
The Little Giant ram weighs 50 lbs, now look at the size of the Dienelt & Eisenhardt ram :eek:

Trick photography? Or your LG is a 25 ?;)
 
Here's a shot of my two, 25 and 100 pounders

Also, like your big hammer, I'm 100 has 3"x6" dies.

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Edited with more photos.

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Yep, the Dienelt & Eisenhardt is a monster! But stamped cast say 50 LB.
 
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Don, both are stamped 50 lb's, the previous owner says the D&E hammers like a 100 pounder. Look at my post above as I have edited it to include more photo's and you can see both hammers side by side.
 
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Well, the new pics help, but that is one huge 50 lb hammer!

If you ever have the ram out of that thing, put it w/top die on a scale and see what it
weighs, bet it's more than 50 lbs ;)

Edit to add;

Don, both are stamped 50 lb's, the previous says the D&E hammers like a 100 pounder.
Click to expand...

Well, if it looks like a duck and walks like a duck ;)

It's cool to have a 50 that works like a 100 lb!
 
Don, I agree. these PH's were made for only a couple of years and the Patent date is 27 Feb 1866. Seems steel might have been in great supply in those days.:D
 
aktoklat said:
Don, I agree. these PH's were made for only a couple of years and the Patent date is 27 Feb 1866. Seems steel might have been in great supply in those days.:D
Click to expand...

Yup, that is a Fairbanks-type design, though I'm not actually sure Fairbanks was a patented item in 1866... maybe Birdog4 knows. My understanding is, all the hammers with a similar mechanical form http://fairbanks.forginghammers.com/ came from companies trying to work around Dupont-Fairbanks patents.

It looks way to big to be a 50# to me, too... but, like Don implied, it's darn hard to argue with the casting.

So, the clutch is similar to the LG... in that the rotation actuates by clutch shoes engaging a constantly turning drive drum?

If it was me, I'd contact two sources for more info... You might strike it rich... Keri and Sid at Little Giant lgiant@alltel.net and Doug Freund freundship@earthlink.net

I haven't used the e-mail link for Doug in a while so you may have to track him down though his books, Anvil Fire, or iForge.

There just about isn't a hammer Keri and Sid don't know a lot about. Doug is a hammer historian and may have info/paper work Keri and Sid don't have, though my understanding is they cross-reference with each other. When I was looking for Fairbanks data, Keri and Sid sent me to a guy who owns and runs them professionally... like all day every day. Maybe they know someone with a hammer like yours.

Before I forget, I got your e-mail and the thread pics work fine for me.

Mike
 
D&E hammers were several; yrs before DuPont came up with his design.(1890)I think they resemble LGs a bit more than F/Dupont.
Pounding Out the Profits by Doug Freund is a great book on the developement of the trip hammer.
That is a huge hammer. As Don said, betcha the ram is a lot bigger than 50#. When I assembled my Fairbanks A(50#), the hammer with 2 arms attached weighed in at 72#
 
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