Post by downunderdave on Dec 28, 2015 23:23:13 GMT
Have you decided what the oven will be supported by? Remember that you must insulate under the oven floor between it and the supporting slab. Attached is a pic of my mobile oven (roll on roll off) which is of a similar size to yours. Its all up weight is around 180 Kgs which works perfectly for my trailer.
When you say it must be insulated at the bottom,,,why is this for cracking or something else?
Two reasons: You need to insulate under the floor to prevent heat conducting to the supporting slab, which in your case looks like one inch of plywood. Secondly the bottom of the floor will easily get to the ignition point for wood (around 250C) unless there is insulation there. Even at lower temperatures heat together with moisture will probably destroy the plywood.
You also need to insulate over the dense refractory of the dome to prevent heat loss from it. When placing the oven in position make sure it is sitting somewhat forward of the axle, otherwise you risk sending the drawbar suddenly skyward because of the high centre of gravity. You will also have to be very careful when cornering as all the weight of the oven will be over one of those little wheels. I've mounted mine far lower than an optimal cooking height for this reason and I'm glad I did.
ps. Try to make your flue pipe removable so it won't be wobbling around in transit and damaging the oven.i mortared in a stainless steel sleeve that the flue pipe slides into. This prevents abrasive wear when putting it in and taking it out.