yaw bearing

[kenputer]

Finally have getting around to building a mount for a 100 VDC motor,the mount is 21/2" pipe to fit over 2".I found it to be a bit lumpy just setting on the pipe so I put a tapered bearing the size of the 2" pipe in between and turns as smooth as can be. This is a heavy duty bearing and I greased it well so should last.

Ken

[DanB]

Looks to be a fun project!  What sort of motor is that?

I may not be seeing it right, but it appears like you dont have any offset between the yaw bearing (that pipe that slips over the tower) and the generator.  You need some if it's going to furl.

[Reno]

Hello Ken

if you used the original motor mount to bolt your gen to the base may I suggest you wrap a couple of straps arond the gen then bolt to the base. If the motor mount is welded to the outside of the genny there is a good chance the vibration will eventually tear it apart and your genny will be hanging from its wires and the blades might not do so well.

[kenputer]

Hi Dan, the motor is a GE P.M. tachometer generator, the tag reads

RPM - 1000

volts - 100

no load test RPM 1800   V  179.4

GEJ - 1024

 it weight is about 40 lbs. add the mount and it is going to be in the 70 lb. range.

 There is very little offset on the mount,this is the first mount of this style that I have made so I'll have to do more research learn of proper offset.What would be a good blade size for a motor with theses specs.?  Thanks

Ken

[kenputer]

Hi Reno, the motor is welded to the base plate and looked to be secure but I will take your advice and add a U bolt around the motor and through the base to be safe.  Thanks

Ken

[Reno]

Hello Ken

I posted from experience and as you point out the weld is strong in my case the outside case of motor was actually peeled back. Glad to here you will play it safe.

[DanB]

my guess is it might make a fine 24 volt machine with a blade around 6 or 7' diameter.    If you try to make it a 12V machine I'd probably run a slightly larger blade and make sure it furls early.  I'd offset that motor to the side about 4" or so.