[12] Also there is no necessity for gearing.
[13] In his latest models the writer uses strands even three times and not twice as long, viz. fourteen strands 43 in. long.
[14] This refers to1/16 in. square sectioned rubber.
[15] Of uniform breadth and thickness.
[16] In practice I find not quite so high a proportion as this is always necessary.
[17] Steel pinion wire is very suitable.
[18] See Appendix.
[19] As high a pressure as 250 atmospheres has been used.
[20] There was a special pump keeping the water circulating rapidly through the boiler, the intense heat converting some of it into steam as it flowed. The making of this boiler alone consumed months of work; the entire machine taking a year to construct, with the best mechanical help available.
[21] Model Steam Turbines. "Model Engineer" Series, No. 13, price 6d.