Question for fabricator

[windy]

 On your 17 footer that you are building, I see that you are using a timkin bearing on the top of the yaw tube. I was thinking of doing the same thing, but am wondering, how do you keep the bearing from coming up out of the bearing cone? There is nothing to hold it down. Or are you thinking that there is enough weight with the generator and cord to hold it down. Any comments from you or anyone else that used this same idea would be most helpful!

Thanks

windy

[Flux]

Weight will hold it. I have done it many times with no problem.

Flux

[fabricator]

Yep, the alternator itself weighs 300lbs? Or there abouts, plenty to hold it down, plus my rotor is tilted back eight degrees, so there is some down force on the whole thing from the wind.

[windy]

Thanks for the comments.

windy

[Timeless Turbines]

     Oops

What size bearing is in the top of your yaw.

[fabricator]

The bearing is about 1.25id so I could use a 6" piece of 1" pipe as a wire sleeve, the brake is all done, it will use 1/4" od plastic tube for the air supply, TT while you are handy, I have a chance to get a LOT of 10gauge THHN, like several thousand feet, new on the spool for almost free, any idea what kind of ampacity four strands of that would carry? I'm thinking 12 runs of that in my turbine to battery run instead of aluminum, I think I also have a deal going on a 200' spool of 6/3 SJOOW for my drop.

[TomW]

fabricator;

There is a "rule of thumb" that if you double a pair of wires of same guage you get essentially 3 sizes larger effective guage. So, if I haven't flubbed this 2X10=7 and 2X7=4 so 4 #10 in parallel be #4 equivalent.

I tend to botch numbers so if anyone knows better please toss it in.

Tom

[fabricator]

Cool, thanks Tom.

[windy]

My bearing is 1.75 inch id.