Wind Turbines anyone??

I've seen industrial grade "yo-yos" for descent control, did NOT know they were made that long. Wow. You try one yet?

 

yea a couple of times at 100+ feet

 

Looks like fun, as long as the anchor isn't in the fiberglas with the flaming resin.

 

Another one going up

 

some more pics:

 

How careful are you to match the blade sets? By weight and length, or how?

 

They are a matched set.

 

some more of the area

 

We changed a Generator Christmas Eve 5:00 am to 9:00 pm start to finish back on line running, 4 degs F.
Great Job Guys.

 

BAN THE BIRD CHOPPING MACHINES!! (Damn bird huggers. A clutch (or brake?) failed in a 5 knot breeze up in NY recently, and a machine oversped. A blade hit the column and crashed the machine. The greenies came out ---)

 

A bit smaller unit going up just east of Boston.
YouTube - Video of MWRA Deer Island Wind Turbine Construction

 

Our gear Box Change of the other day.

 

What was the failure?

 

shaft gear tooth failure.

 

Lubrication problem, or under designed? (Could also be random - )

 

fractures off. under investigation by manufacture.

 

Brittle failure on the driving/driven side. For a first guess, a metallurgy problem that will be throughout the gear, that just happened to be the one that went first. Lucky the busted off pieces didn't get into the rest of the teeth, might have been a rather abrupt stop. (Or did it?)