Dia. Mag. Alternator

[z.monkey]

Its in the hole!

Lot of work getting that magnet in that hole.

Itsa 40 pound magnet...

[z.monkey]

Drive shaft...

There is zero Z Axis lash on the shaft.  The side to side clearance is a little loose, maybe 2 mils.  So, I am going to pull it apart again, and adjust the bearing plates with a punch to squeeze the bearings a little tighter.  There should not be any movement of the shaft, except the intended movement, spin...

The magnet is slightly motoring on the bearing plate bolts.  Otherwise the magnet moves freely.  It is attracted to the bore equally around its perimeter.  It takes little effort to spin the bare shaft.  This is much better that Diamag 3 with the blocks.  The magnets would motor to the blocks and want to stay there, not very efficient.  This is the eddy currents that we don't want.  I am going to replace the hardware in the core with nylon, or maybe aluminum, and this should eliminate the unwanted eddy currents and motoring.

I'm planning on testing on Thursday.  I have to go gather up some more hardware (can you believe it?), and finish assembly tonight...

[nievesoliveras]

I am in suspense!

Jesus

[z.monkey]

suspense!

Yups...  Me too!

Replaced the steel hardware with brass.  Did the rest of the mechanical assembly.  I got a little over zealous with the socket wrench and cracked one of the bearings.  Also the peripheral magnets do not auto-motor.  I'z already has a contingency plan for this, there are 1 inch shaft extensions on the back side for gears, which are already specified.  All I have to do is make an order.  Then, also, not totally happy with the bearing mount clearances.  So, it may be coming apart again, maybe several times...

So, at least now its more colorful...

[nievesoliveras]

It is always difficult to attain something of value.