The Burner Parts

The main components for the burner consist of

• The Burner Nozzle - a stainless steel fitting that fits onto the end of the burner tube.  We're ordering this part from Larry Zoeller at Zoeller Forge 

• The Burner Tube - a 10" piece of 3/4" black steel pipe threaded at one end.  Actually it's 24" long and threaded at both ends.  But we'll cut it in half and save the second piece for another burner.  Propane fuel is introduced at the left end of the tube, mixed with air as it is propelled down the burner tube and ignited at the right end.  Three 2 1/2" slots in the left end serve to inject air into the burner tube using the venturi effect.  

• The Choke Slider - a 3" long tube piece of 1" black steel pipe that slides along the burner tube and covers the slots.  The air can be adjusted to almost no air admitted into the burner tube, or a lot of air admitted into the tube.  

•  The Bell Reducer - a 3/4"x 1/2" cast iron bell reducer which serves to hold the burner tube and the accelerator in place.  

• A 1/2" Brass Female-To-Male Bushing which has been drilled out to a bit more than 1/2".  This fitting is screwed onto the 1/2" end of the bell reducer.  The 1/2" hole allows the 1/2" pipe nipple of the accelerator to slide in-and-out of the Burner Tube - after we have bored out the threads to 1/2"and then enlarged the hole so that the accelerator tube freely slides through the hole. 

• The Accelerator introduces propane gas into the burner tube and consists of a number of brass parts: 
• a 0.023" MIG welding contact tip.  This forms the gas nozzle which injects propane gas into the burner tube (not to be confused with the burner nozzle above).  

• a threaded MIG welder gas diffuser to hold the welding contact tip.  The threaded half to the left is cut off at the gas holes and discarded.  We bevel the cut of the remaining half of the diffuser This half has an outside diameter that is almost 3/8".    

• a 6" long x 1/2" outside diameter brass nipple.  It just so happens that the inside diameter is 3/8"  (Eureka - almost (but not quite) the same ID/OD diameter as the MIG gas diffuser!!).  We'll press-fit the gas diffuser into the nipple and braze it in place. 

So, putting all of these bits and pieces together will go like this:

Here's what all of these raw parts look like after we've finished working on them.

 And when we get the bits and pieces assembled.

We also need a whole bunch of other parts to connect the Mikey burner to a bottle of propane gas.  Without limiting the generality of the foregoing, these parts consist of

• a stop-cock to quickly turn the propane gas on-and-off
• connections to connect the stop-cock  to a 12'-15' propane hose. 
• a 12'-15' propane hose
• an adjustable propane regulator
• a tank of propane gas. 

We'll describe the purpose and detail of these parts as we fabricate our Mikey Burner