Sorry I didn't get this posted sooner. I must have hit "preview" instead of "post".
Here is a drawing of the yaw mount I built last year. I actually don't know what tapered bearing part number I did use, but the FAG part number was handy. I'm sure you can find a cheaper bearing that would work fine!
At this point, I think the compression fitting would work, instead of the series of pipe fittings I actually used. I think an even better third option would be to use the cable relief straps - neat things but I haven't got a picture handy.
Using one tapered roller bearing, instead of a mounted ball bearing on the stub, you have a lot less heavy hardware up there, too.
One limitation with this design is that the grease going through the roller bearing flows into the stub, and falls to the bottom. Probably not a big deal, but you can't just pump the grease gun until is comes out the buffers at the bottom. It will never happen! I guess I haven't completely solved the grease monkey problem.
Steven Fahey
