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This makes up at least half of the gun's mass right here. This is the assembled hammer mechanism outside of the case. The output shaft is held all the way down to the rest of the mechanism by the front bushing. The large dark chunk at the bottom is the flywheel, the lighter piece settled inside of it is the clutch, and the shaft on top is obviously the output. The motor will rev up the flywheel, and a cam buried down in the center will kick the clutch up towards the shaft as the flywheel overtakes the output shaft. The clutch piece will be caught between the flywheel grooves and the three tangs of the output shaft, and you get an impact. Nobody I've shown this to so far have seen this exact kind of impact mechanism except on a hydraulic gun. When I took it apart the grease in here was almost like tar in some places. I don't know it it was just old or if it's a special-purpose grease. It's going back together packed with wheel bearing grease.



	This makes up at least half of the gun's mass right here.
	This is the assembled hammer mechanism outside of the case. 
The output shaft is held all the way down to the rest of the 
mechanism by the front bushing.
	The large dark chunk at the bottom is the flywheel, the 
lighter piece settled inside of it is the clutch, and the shaft on 
top is obviously the output.  The motor will rev up the flywheel, and 
a cam buried down in the center will kick the clutch up towards the 
shaft as the flywheel overtakes the output shaft.  The clutch piece 
will be caught between the flywheel grooves and the three tangs of 
the output shaft, and you get an impact.
	Nobody I've shown this to so far have seen this exact kind of 
impact mechanism except on a hydraulic gun.
	When I took it apart the grease in here was almost like tar 
in some places.  I don't know it it was just old or if it's a 
special-purpose grease.  It's going back together packed with wheel 
bearing grease.


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