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Disaster with wind turbine | 34 comments (34 topical, editorial)

Re: Disaster with wind turbine (3.00 / 0) (#16)
by Jeff (ruralmcguyver at yahoo dot com) on Sun Apr 13th, 2008 at 09:33:47 AM MST
(User Info)

Dayummm! Sorry to see that! It looks like everyone pretty much coverd the tapered shaft type mounting. As a sort of "retired" Tool & Die Maker & Engineer, I can definitely back that up. Also, just for future, or anyone elses reference: first-year apprentice tool&die school teaches: NEVER put set screws 180degrees apart (directly opposite each other), they work against each other and will always come loose. 45-120degrees apart is best. I even caught this on a power wheelchair a company tried to talk me into! I couldn't believe it!
Rural McG

Re: Disaster with wind turbine (3.00 / 0) (#18)
by MattM on Sun Apr 13th, 2008 at 06:50:59 PM MST
(User Info)

What's wrong with cotter pins?
----------------------------- Go Huskers!
[ Parent ]

Re: Disaster with wind turbine (3.00 / 0) (#21)
by Flux on Mon Apr 14th, 2008 at 01:00:57 AM MST
(User Info)

Nothing for their intended purpose, this is not one of them.
Flux

[ Parent ]

Re: Disaster with wind turbine (3.00 / 0) (#26)
by MattM on Mon Apr 14th, 2008 at 05:35:14 PM MST
(User Info)

I differ in that opinion. You can fashion a hole for one on the end of the shaft so the blade doesn't leave the hub.

The keyed groove with lock pin on the shaft is more meant for a sheering point when equipment gets over-torqued. Better to sheer the pin than to bend the shaft out of alignment.

If the lock pin sheers off the cotter pin keeps the blade on the shaft and the blade assembly just free spins.
----------------------------- Go Huskers!
[ Parent ]

Re: Disaster with wind turbine (3.00 / 0) (#27)
by MattM on Mon Apr 14th, 2008 at 05:38:50 PM MST
(User Info)

Typo: "You can fashion a hole for one on the end of the shaft so the blade doesn't leave the hub."

Should have read: "You can fashion a hole for one on the end of the shaft so the hub doesn't leave the shaft."
----------------------------- Go Huskers!
[ Parent ]

Re: Disaster with wind turbine (3.00 / 0) (#28)
by Flux on Tue Apr 15th, 2008 at 01:21:54 AM MST
(User Info)

Sorry I assumed you meant it as a means of driving.

I agree that used as you suggest it gives you a back up to hold the thing in place. As long as you get it down as soon as it is seen to be running on no load you have a chance of saving the situation if not the shaft.

Flux

[ Parent ]

Disaster with wind turbine | 34 comments (34 topical, 0 editorial)

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