speura Posted April 11, 2008 Share Posted April 11, 2008 My question is about welding up pieces together for my next JYF. I've made one before and I'm looking to improve on the manufacture of the next one. I'm using a brake drum set in a steel plate and the pipe is 2" schedule 40. Last time I just kept welding until it was just a massive bead. I use a Lincoln Mig sp135 with a Lincoln multipurpose .035" flux core. I don't use shielding gas. Would there be different type of wire to use to get the pipe to weld to the brake drum better? Quote Link to comment Share on other sites More sharing options...
jimmy seale Posted April 11, 2008 Share Posted April 11, 2008 maybe build a plate to weld to the pipe and then bolt or weld to drum? Quote Link to comment Share on other sites More sharing options...
Dodge Posted April 11, 2008 Share Posted April 11, 2008 I'm with jimmy. The drum I have to use has a hub hole about 6" in diameter. I planned to make a plate to cover that hole with a hole the size of the tuyere, and the pipe welded to it. Then just drill for the bolt pattern and bolt over the hole. Quote Link to comment Share on other sites More sharing options...
speura Posted April 11, 2008 Author Share Posted April 11, 2008 The drum I use has a hole just around the same size of the pipe but I could just use the bolt holes to connect the plate to. Sounds like a plan, I had previously just welded pieces of rebar into the bolt holes to fill. Quote Link to comment Share on other sites More sharing options...
unkle spike Posted April 11, 2008 Share Posted April 11, 2008 I chose to bolt my brakedrum forge together, as the welds will eventually crack from differential in heat in different areas. I have been using mine for 5 years with the same drum and pipe. Quote Link to comment Share on other sites More sharing options...
Glenn Posted April 11, 2008 Share Posted April 11, 2008 One of the easiest ways is to cut a hole in the plate to catch the outside lip of the brake drum. No welding. Rotors have a flat edge so cut out for the hub, again no welding. I would weld the air pipe to the drum. BP0518 Making a Forge Pot Quote Link to comment Share on other sites More sharing options...
speura Posted April 12, 2008 Author Share Posted April 12, 2008 Yep my original JYF drum sits in a hole and I've used tabs to fit in the rotor gap to hold it down (I store it on it's side). And I originally welded the pipe to the drum, the first time I did a small bead and I guess I didn't get much penetration. It eventually cracked and fell off. After that I put on a bigger bead and then some more. The pipe is probably closer to 3 inches instead of 2. Instead of welding in my tuyere I made an insert to slip inside the pipe. What I have works well I'm just starting to make another one that's a little more compact, the grating for the tongs and hammers will swing up into position and my travel anvil will have a shelf underneath to bolt it down to while I'm on the road. I want to make sure I have the joint 'tween the pipe and drum done well because welding is a bit of a weak point for me at the moment. (practice, practice, practice). Quote Link to comment Share on other sites More sharing options...
MRobb Posted April 14, 2008 Share Posted April 14, 2008 What you could also use is a metal floor flange bolted or welded to the inside of the brake drum. Mine had a 2" threaded hole on the inside where I just screwed on a threaded pipe nipple. You can get them with different ID hole sizes, depending on what size pipe you are connecting. Brake Drum Fire Pot - Blacksmith Photo Gallery Quote Link to comment Share on other sites More sharing options...
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