i've been quiet for a while, i recently felt compelled to buy a steam engine on ebay, and then hatched a plan:
you'll recognise the MOTM120 sequence with a little variation courtesy of some CGS modules
the dynamo is just regulating the tempo of a MOTM320 LFO via it's V/Oct input
i did spend most of the bank holiday monday building a steam powered pulse generator (add a rotating disc and a pair of commutators) but the steam engine wasn't powerful enough to power my clunky transmission (bits of old tape machines, the shaft from a coffee percolator, bits of hard disk and a hairdryer)
maybe next weekend :-)
cheers
paul