[TowerTalk] MRC 0017 Bearing for a small prop pitch motor.

[Alton McConnell Avon-Cadillac]

Morning Everyone:

 

I am finishing up the rebuild of a small prop pitch motor.  We all know
the MRC 0017 bearing that is located in the adapter plate is no longer
available.  My MRC 0017 races look ok but the bearing assembly is sloppy
and the ball bearings are black and need to be replaced.   The largest
ball that I measured had a diameter of 0.1860 inches or 4.72mm.  Does
anyone know what the spec ball diameter was?  Otherwise, I will have to
guess at the size when I order replacements. I have also heard of people
machining solid brass bearings to replace this bearing in its entirety. 

 

Also, I understand that there is an improved lip seal to replace the
seal under this bearing,  Does anyone have a part number? (I replaced
the seal in the gear box housing and reversed its direction also.)

 

Any further advice on sealing up the gear box before I put the gear
train back in the housing?  I have the gears assembled with the "00" out
and everything assembled correctly.  The 1971 QST article was very
helpful here.

 

Many thanks!

 

Alton, NU8L



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