I added a bunch of locknuts, especially to the fan blade assembly, when I put mine together. This required replacing many of the supplied bolts with slightly longer ones so there was enough room for the lock washers.

NOTE: Use of 1/4" longer bolts in assembly can greatly ease getting some of the parts to fit together, as it may be difficult to get them close enough to bolt using shorter bolts.

While I like my windmill and plan on continuing to use it, since I added a second pond I am running a good electric supply to the pond vicinity (only 170 yards to go!) and will be pruchasing and installing electric aeration to both ponds. I am pushing biomass limits close enough that I don't want to have to really on intermittent wind.

"Live like you'll die tomorrow, but manage your grass like you'll live forever."
-S. M. Stirling
[Linked Image from i.pinimg.com]