A good pipe over pipe yaw bearing is OK though, so long as it's greased - Dixie posted recently about their failure with the 15' turbine, the yaw pipe did wear out, but it took 4 years with no maintenance and Im afraid the machine was built very ligtly (I'd use much bigger/longer pipe for the yaw these days). Some friction is nice there I think. Although - you're solution with the bearing looks workable. I worry a bit that if the bearing fails it could prevent furling - a very simple/sturdy pipe over pipe arrangement should never seize even if it wears out badly ~ so long as there is a bushing at the very top.
Not sure if this is a 10' machine or not - but - if it is, I think also part of the problem with teh stub snapping off is that its too long. The stub should be just about the same length as the yaw bearing itself, looks like this one is quite long, and 1.5" pipe is not strong enough to support a machine that large in my opinion. I'd not have less than 2.5" sched 40 pipe from the top guy wires to the yaw bearing itself - then a smaller pipe for the stub would be OK.[ Parent ]
