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Fig. 1.4 a, b, c, d About five 15kg propan/butan bottles were enough
to melt all the necessary lead into the keel, on average cca 25kg of lead
per 20min (a batch). The gas burner is from an old water boiler heater
and gives about 15-20kW output power (a),
first layer filled with lead blocks and molten lead. Its good to overheat
the lead a little to allow it to run freely to every crevice, it is not
so good to pour more then 1cm in one go, and its entirely bad to pour
directly on aluminium plate (b).
Last third layer of what is 70cm high lead block (c)
and final level (d)
- its within millimeters to design point!. All 4,100kg took about 150
hours of work.
Photos taken on: 27.6.2007, 19.6.2007, 29.6.2007 and 2.7.2007 |
