Help with a Dienelt & Eisennardt 50 lb power hammer (pics)

Something to remember when building your motor bracket and setting this up for operation. A flat belt needs a lot of "Wrap" on the pulley.
 
John, What do you mean by a lot of wrap? it is a 4 inch belt on it now.
 
Like, a lot of pulley surface in contact with the belt. Probably a third of the pulley circumference or more should be have belt "wrapped" around it.
 
I'm just guessing but, from the length of the belt I see hanging in one of the pictures, and no motor bracket, this machine was not motor driven but was driven from an overhead drive shaft. If that was the case, then the drive to driven ratio was probably 1:1 or 1:2 this would have given a contact area of somewhere around 24 inches. If you use an electric motor of 1725 rpm your going to have to use a drive ratio of 1:5, which puts your motor pulley at 4 to 6 inches in diameter. There isn't going to be much wrap there.

There are a couple of way to approach this; an 800 rpm motor will lower your ratio, or some people have hybridized this drive arrangement and run a gang type v-belt and v-groove sheave on the motor and left the driven end flat. A gang belt looks like the serpentine belt on your car except a lot bigger. The belts are flat on the bottom not pointy. I find an example and post it for you.

John
 
John and Salem, Thanks. John, could you call me for a discussion please. 318-865-8166.
 
Cool hammer, just out of curiosity, what is the linkage from the springs to the hammer? Is that rubber or leather belts? Either way I'd look at replacing it due to dry rot and age.
 
Dan, does the pulley run back far enough from the column to allow for the motor to be set at the rear of the machine?

If it is only an inch or two maybe V-belts will be your only option to run the motor below the machine.
 
The shop I worked in over the winter has an LG 50, we worked it every day... it's got a 4" flat belt, right from the motor to the hammer pulley. The flat pulley on the motor shaft is definitely less than 4" diameter, I think smaller than 3". Enought that it's close to the correct pitch diameter (2.44" IIRC) for a 1725 rpm motor so maybe 2.5". Any smaller and I don't think the belt splice would ride over it well. As it is, I called the hammer "ol' fap-fap" because of the sound of the splice running over the pulley.

But... it works fine, no belt slippage as far as I could tell, and plenty of power. Even when 0 degrees F in the shop, the hammer would run OK if a bit stiff due to the grease.

My LG 50 is v-belt driven, but I have worked on another LG 50 with a jackshaft/flat belt drive that slipped a lot initially. You could tell there was significant loss of power and speed... the one I mentioned before, driven with a pretty small pulley, did not feel that way.
 
Great thread!

I LOVE threads about old hammers.

The design of this hammer is great... so beefy. You've got the same weight in a 50# hammer as my 100# LG. Isn't there another make of hammer with this exact same design? I remember a thread with a hammer that had the same leather "connecting rods."

Hope you post some video up when you get it going Dan! :)
 
I just called Gary Eagle, the owner of that LG 50 driven with a 2.75"-ish flat belt motor pulley.
I was correct, pulley a little smaller than 3", motor 1725 Rpm, 4" flat belt, direct to the 12" hammer pulley. The belt wraps probably 40%+ of the motor pulley. The belt splice is metal-interlocking type and rides fine over the smallish pulley.

Of course your hammer pulley may be different in diameter... do you know what it is yet?
 
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Yes it is leather just below the springs and are in great condition. They were replaced about 4 yrs ago. Looks like I will be mounting the motor on the side and using pillow blocks to mount a rubber go cart tire that is 11 inches in dia. and my clutch is 12 inch dia. then I will use a v belt pulley on the motor and v belt pulley on the shaft with pillar blocks to turn the rubber tire. I will do the calculations to get the correct size v belt pulley's to attain the correct RPM. Yes I will show this machine when I get it running. Will take a while though as I still have to build the platform to house all the equipment. The linkage is for the foot pedal. The one thing the pictures dont really show is just how big this machine is. Dwarfs a 50 lb, little giant. This thing is a monster. Anybody notice how it has a hole that goes thru it when looking at the hammer from the front, right between the upper and lower dies. That means you can forge a 20 ft bar of steel. 0r 50 ft. Thanks all for the tips and help.
 
Looks like I will be mounting the motor on the side and using pillow blocks to mount a rubber go cart tire that is 11 inches in dia. and my clutch is 12 inch dia. then I will use a v belt pulley on the motor and v belt pulley on the shaft with pillar blocks to turn the rubber tire. I will do the calculations to get the correct size v belt pulley's to attain the correct RPM.
Click to expand...

Boy that sounds like a lot of unnecessary trouble. But that is all I will say, if that's the way that seems best to you...
 
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