Hi Stuart,

Yes I would like to provide data, at some point...

I have recorded the out-put each month, if I can find it? Roughly the turbine has produced 2kWh for every hour of operation - (6Mwh in 3000hrs). From the 1st Of December to the 9th December 2007 it achieved 1Mwh! It quite often reaches 100kWh in a day, or more.

I lowered the mast & turbine (for the first time) last Thursday, as it was a fairly quite day. I could not find any evidence of why it squeaks at low rpm. The disc brake rope had been rubbing on the main shaft and had also worn into the slip ring plastic centre hole??

It took all day (2 of us) to check all the nuts & bolts; replace the cowlings (use good quality ties)
When we hoisted the mast back up none of the bolt holes lined up! It took another hour in the dark to nudge the mast into place. - It is quieter (I think), but still squeaks!

Peter