I've read most of the available literature about it, and it appeared to have 2 issues........like all small run hand-built machines, they simply did not have time to develop it enough........So with tuning as in carburetion and ignition adjustments, plus the fine-tuning of the oil delivery........too much would smoke and foul the plug, not enough could potentially destroy the blower........And second, more critically was the bad overheating........piston rings turned blue, so lost tension, loss of compression. Became all too hard and they removed the lot, returning the bikes back to being naturally aspirated. The HP gains were marginal....... I think a figure of about 36 BHP comes to mind.........If they had run alcohol fuels this might have helped but who knows now..........The cylinder head is not a very strong casting, I am not sure what the head material on those 2 bikes was, but the alloy ones are very weak.
Last edited by a moderator: