territorialmillworks Posted April 25, 2009 Share Posted April 25, 2009 Started my PH almost a year ago. As a home machinist, I chose a complicated and somewhat over-engineered design patterned after 100# LG but using industrial heim joints. Total wt: 975#, anvil 305# (traded for 24 pack of beer, generic none the less), ram 72#, 287 BPM, frame 4X4X.25 sq. tubing filled with sand, 3 sets of 2.25 X 2.25 X 4 dies made from farm subsoiler toolbar, 1.5 hp baldor motor, and sow block with adjustable gibbs using UHMW plastic guides. Cost $1300. Lessons learned: several failed cluch designs before going with tire hammer, not pretty but works great. With Dave Manzer's CD and video recording with slow motion play back, I tuned the hammer to the sweet spot in just 15 minutes! With 72# ram, I need to go with either higher spring rate or higher BPM for max efficiency. Quote Link to comment Share on other sites More sharing options...
Frosty Posted April 25, 2009 Share Posted April 25, 2009 That's just plain beautiful. How's it forge? How about a video of it in action? Frosty Quote Link to comment Share on other sites More sharing options...
Jura T Posted April 25, 2009 Share Posted April 25, 2009 That looks really good! Have you already fed hot metal to it? I have never used a mechanical hammer (only two different air hammers). Can you easily forge both very small and large stock with same settings? anvil 305# (traded for 24 pack of beer, generic none the less) I'm not quite sure if that was a fair trade.:) Quote Link to comment Share on other sites More sharing options...
territorialmillworks Posted April 25, 2009 Author Share Posted April 25, 2009 Other than a couple 3/8" tapers, I've only 'smashed' some scrap steel. To test the hammer and dies, I cold forged a piece of 3/8" round to less than 1/8 easily and without any damage. 1" square should be no problem. Minotaur, I'm guessing that forging stock either 1/2" bigger or smaller than optimum die spacing and I'll be losing power. But it only takes about a minute to to lossen the 1" fine thread nuts on the top link and change the spacing. Quote Link to comment Share on other sites More sharing options...
steveh Posted April 25, 2009 Share Posted April 25, 2009 looks very professional,nice work! Quote Link to comment Share on other sites More sharing options...
Chad J Posted April 25, 2009 Share Posted April 25, 2009 that is a beauty, to echo frosty, if you could a video would be nice. Quote Link to comment Share on other sites More sharing options...
Sam Salvati Posted April 25, 2009 Share Posted April 25, 2009 Can I get a picture from the side? Love the front guard, nicely done hammer! Quote Link to comment Share on other sites More sharing options...
Bentiron1946 Posted April 25, 2009 Share Posted April 25, 2009 That is a nice looking hammer.:D Quote Link to comment Share on other sites More sharing options...
Double Y Posted April 29, 2009 Share Posted April 29, 2009 Very nicely done. I would like to see a video and more pictures from the side when you get a chance. I purchased Clay's Tire Hammer plans and have yet to start putting it together. More pictures would be a great asset. Quote Link to comment Share on other sites More sharing options...
Dodge Posted April 29, 2009 Share Posted April 29, 2009 I really like the rear tire clutch. After building mine with the tire in front (like Spencer's design), I wish I would have done it this way. I didn't allow for much room for counter weights. Its not bad but could use a couple more pounds to smooth it out. Your design totally eliminates this problem. Nice job!! Makes me think about a retrofit :D Quote Link to comment Share on other sites More sharing options...
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