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I Forge Iron

knvictx

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  1. It's 10.5 amps at 110 volts. That tiny 1/5 HP blower motor draws no more than 2.5 amps at full load. Also they were 110 volts DC or AC at 25 to 60 hertz. Back in the day windmills charged a bank of twenty 6 volt DC batteries. Crude AC systems were powered by waterwheels or various engines. However you got 110 volts you could run a Champion or Buffalo blower. Both (and others) were designed for rheostatic speed controllers. The advantages over an air gate: 1) Cool optics to customers in 1932. 2) Easy to set minimum fan speed to keep fire. 3) Longer motor life since speed and load are controlled. 4) The old folks knew what they doing at the time. Air gates are good for one speed motors. It's the cheapest way to blow a big forge. 1) Few know of 1932. 2) Drill a small hole to keep fire. 3) A closed gate wears the motor. 4) It's not hard to rig one today. A multi-speed hair dryer can blow a small forge.
  2. Use stove pipe and hose clamps to squeeze an exact fit. Drill, cut then pop rivet any tapers you need. Outside diameters are easy. Rivet these first. Inside fits to flex need to have the overlapping metal cut away and be fitted before drilling to rivet. But sloppy is OK. Truth is: That air don't care. Just get it there. Consider PVC if it's away from hot stuff
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