What a beautiful machine, I love the design, really great engineering, people need to see this machine and start making these in their backyard workshops, its far better than the tyre type you see lots of.
Thank you so much for posting this - now I know all the features I want to include in my own design for making my own out of scrap. This is one well thought out machine - the ability to adjust for the end thickness you want, be able to adjust the hammer force independent of rpm's, the circular foot pedal is a very nice touch, the easily replaceable dies that don't move about is a great feature, and I'm very curious about the clutch arrangement on the drive for the crank - could you someday post a video showing how they designed and put it together? That looks like a much more controllable mechanism than the common way of engaging a belt into a pulley and relying on belt slip for partial speeds. Thanks again, a simply gorgeous machine.
Thank. Yes, it's a great machine! The clutch is pretty simple. An idle wheel outside of a inner drive wheel. Both with a conical inside/outside (hidden) surface. When you press the pedal you push the idle wheel towards the drive wheel and the conical parts start slipping against each other. I guess the reason for conical is that you get a larger contact surface. Don't know if that makes sense?
Thanks. Yes, another reason for conical is that the interference fit is more even from inner to outer; if it was a simple face, there would be a big difference in slippage from inner diameter to outer diameter. Are the cones simply metal on metal, steel on steel, or is there a facing material or lubricant? As the surfaces get hot the slippage factor will change, but I rather suspect they compensated for that in some manner as to keep the slippage factor more constant?
Love the adjustment. Any one that uses an old mechanical hammer knows how handy that would be. I currently use a little giant 25# that is 102 years old.
you are a master my friend, i want to do things like you do in your shop but i live in venezuela a south american country,all that stuff are very expensive in my country i am a blacksmith too but i don´t have that tools, i'm welder and i make doors windows and any kind of work and always i wish make things like you do with iron forge hammer and anvil, i see you´re a lover of that kind of work and more what lover you are an artist, However I will try to do simple things I have seen in your videos where you only use fire and hammer, I will use an iron plate to hit two inches thick and make a forge with a back drum truck, thanks for your good videos
Hmm it doesnt seem too complicated,except the clutch a guy in a shop with lathe and welder could make it.Well you would need truck axle and a leaf springs,I beam,ball bearings,and some 20mm sheet metal.For a clutch maybe use a tire and motor setup like on those diy powerhammers. Definetly doable with some improvisation.
+zumbazumba1 You don't need ball bearings for something like this. Good old fashion lead bearings would more than suffice, also, being one solid lump packing around the pivot shaft, it won't destroy something like a ball bearing. When it's ruined and sloppy, you just unpack it, melt it, pour it again. As for the clutch, you could probably use an actual clutch system from a truck. IMO, if you get a shitty old truck, something above 5 capacity, you can get all the parts you need to built at least one, and extra. If you're super lucky and find one of those old tow trucks, heck, then you have even the lead because those buggers had lead stacked in the back.
aserta What you are reffering is called babbitt bearing,its a aloy of lead(not just any lead,this one is harder),used 150 years ago. Ball bearings would be used for eccentric cam with cable tensioner for adjusting the length of hammer strokes(much simplyer than shown on this machine -does same thing) The shaft that holds leaf springs can be secured with brass bushings, thats more than enough.
Oh, now I understand how the power hammer works. So the key item is the spring and if wheel rotation is quick enough, resonance in vibration makes hammer hit the anvil. Am I correct that adjustments in driving arm attachment to the spring making resonance frequency different so the hammer hits anvil more or less frequently?
+YurNick Na, I don't think it has to do with resonance at all actually, but the spring is key yes. The faster (harder on the foot pedal) it moves, more "whip" is introduced by the spring and harder it hits. The rear adjustment makes more or less spring available, but in reality it's not so obvious of a difference.
+Torbjörn Åhman With resonance you probably would end up without control since that would suddenly apply at a specific frequency. I imagine that would be quite scary and potentially fatal for the machine as well...
+Torbjörn Åhman I mean, amplitude of vibrations from driving wheel is constant. So if not the springiness, amplitude of vibrations of the hammer on the other side of the lever would be constant too. Since the hammer amplitude depends on vibration rate, it should be a resonance effect, which is controlled by operator (so it's not scary and fatal - since you control the vibration rate by pressing pedal).
+YurNick Only hammer on the other side of spring is resonating to driving wheel vibrations, not the whole construction (which have different resonance frequency and so the whole thing is safe).
Hi. I recently bought a hammer much like yours, only older and a bit simpler. But it came without a motor. Can I ask what size motor and what kadence you run yours with? Thanks
It's hard to see moving, but in the rams guide which holds the springs, is the top spring bent up holding something green in? Is that just for sound dampening?
A machine like this couldn't be built these days at an affordable price. Remarkable piece of engineering long before the days of cad and cnc. I want one!
As I don't want to invest$$$ at 69 age. I might build a smaller on that would save a lot of hammer work. Thanks for showing, that looks to be a versital work horse you have. Always love your videos the most you are a great human in many ways and your love for your children 💓 Thanks for showing
Beautiful piece of equipment, only downside is the bent nail holding the top hinge pin. I would love to have this today, swinging a 6 pount hammer to make a cross pein isn't fun after a while.
Exactly what I was thinking. For some reason, rarely does anyone show the workings of a power hammer and its adjustments. Very informative video. Thanks for that Torbjörn! 🤜🤛
First 'intro' video i've seen where nobody talks I've been subbed for a few weeks or so but hadn't got around to watching your back catalogue of videos - that's what i'm doing right now. I absolutely love the things you make, such a pure raw skill you have :)
fabricación antigua, hecho para durar, Tu tataranieto todavía podrá usar el martillo en buenas condiciones. No logré entender la acción de enganche del pedal. Saludos
Excelente Maquina, ! Excelente video. me estoy contruyendo uno, y ver tanto detalle me ayudó mucho. Muchisimas gracias...!!! Excellent machine,! Excellent video. I'm building one, and see as much detail helped me a lot. Many thanks...!!!
Братуха !!! Извини, лень писать на английском.... Может ты это переведёшь... Я пересмотрел огромную кучу видео про кузнечные молоты. И я в первый раз вижу молот с возможностью регулировки по высоте !!! Круто !!! Это лучшая конфигурация !!!
+wood and stuff Yes, the amplitude is a function of speed. The faster the ram moves the more "whip" it gets from the spring resulting in larger amplitude.
