Mast pipe question

JBarker · Post by **JBarker** » Mon Sep 16, 2019 6:04 pm

Should this mast pipe have a cup at the bottom for gear case to sit in? A702 mill. Thank you.

windybob · Post by **windybob** » Mon Sep 16, 2019 6:07 pm

Short answer.......yes

Kevin · Post by **Kevin** » Mon Sep 16, 2019 9:56 pm

Maybe not? It looks to me like it is the newer style of mast pipe.
I think the cup is built into the mast pipe and there are thrust washer inside the cup.
You should be able to remove the thrust washers and clean it all up. Then, pack the cup with grease and put in one washer at a time and pack each washer with grease as you add them.

top of mast pipe.jpg

Windmillsrus · Post by **Windmillsrus** » Mon Sep 16, 2019 11:21 pm

Kevin should be correct. Pull out what looks like washers and there should be a cup underneath.

JBarker · Post by **JBarker** » Mon Sep 16, 2019 11:49 pm

Thanks all for ur input

windybob · Post by **windybob** » Tue Sep 17, 2019 7:21 am

Sorry. I don't get out much these days. lol

Ron Stauffer · Post by **Ron Stauffer** » Tue Sep 17, 2019 3:15 pm

Jerry
That looks like a second generation FIASA mast. They were made by sleeving the main tube down to the tube for the motor. They only have a very small amount of weld on the bottom of the small tube and very prone to break the weld. If you feel any movement replace it.

Most people have seen a windmill pick up the entire drop pipe string when a weep hole clogs and the water freezes the sucker rod to the pipe. I saw one of these FIASA mast pipes with the weld break that the drop pipe froze and the owner told the whole head was moving up and down on top of the tower. I assumed this guy was wacko until I saw what had happened.

Ron Stauffer
Montrose CO

Vintage Windmill and Wind Generator Forum

Mast pipe question

Mast pipe question

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