Making the Ground Firebox....

We have built a firebox to go with the ground boiler. This box is fairly hefty - it is about 2.5 meters long and has a volume of 4 cubic meters. The plan is to use coal or wood for the initial low-volume firing for the first dribble flights. At some time we intend to convert to the use of oil fuel, but not yet, because the cost of the required blower and burner looks rather substantial....

The box - again welded up by the trusty Erskine and his sidekick Osmond - is quite crude, but it will do the job. At the right side you can see the support frame to hold the boiler in place over the firebox. Since the boiler full of water will weigh nearly two tons, you can see that this frame needs to be pretty heavy-duty!

This is the finished product - finished except for the counterweights for the guillotine-style door and the fireproof lining..... We will insulate this firebox with rock wool type insulating blanket and special insulating concrete.


It was a bit of a tight squeeze getting the firebox out of the yard.....


But we managed, and got it onto the truck.....


And round to the Feltham Scout Hall....


Where, for the first time, we united it with its brother the boiler! (We just hope the two do fit together properly as planned)....


Here Chris and Scott are preparing to pour the concrete insulation layer onto the firebox floor. As you can see, the boiler is virtually completed.





Next you can read here about putting the boiler and the burner box together....




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