Muller Build July 13-15

A few days a go I cut the washer come arbor off the 1.5" shaft.   I turned it down.  Had I to do it over I would have cut most of it off first with a angle grinder cut off wheel.   It was my first time using the steady rest other than for coiling wire.

	On the left an image of the shaft inserted into the toothed wheel hub.   After the washer was removed and the hub bored. Shop is starting to look a bit more organized!

Today I cut the V belt groove in the 9 3/4" in pulley.   Bolted it to the 14" face plate.  Everything about this was pushing the limits.   If the cross slide traveled another few inches to the front of the lathe it would have been easy.  Would have been easier if the face plate was not larger than the pulley.

Before	After

That should complete all the drive parts but for mounting.   

This is the bushing I used to align the bottom bearing so I could drill its mounting holes.  The small diameter has been turned down.	It is a slip fit to this thin wall tube from a chain link fence  The bushing will bolt to the bottom of the drum and the pipe will keep sand out of the bearing.

Four holes will be drilled on the flange.  The bush will be slipped over the 1.5" main shaft and the holes marked on the drum with transfer punches.  Then the bush will be removed and the center bored to allow more clearance for the shaft.

During final assembly some sort of sealant will be used between the pipe and bush.   Also need to figure out a top bush that will let the shaft rotate inside the pipe while maintaining spacing should the pipe get bumped.  Maybe HDPE plastic.  Then a cap attached to the shaft that covers the pipe.

Drilling the holes in the flange.	Enlarged them to 1/4"

Drilled one hole then with it in place  marked the other three.	The bolt holes for the flange came out  very close to the center hole.   One broke  through and I turned it into a slot.

Obviously this was not as well tough out as it could have been.  But it worked out just right.   The choice of 1/4 hardware here turned out to be a good choice as it was small enough to not get in way of the bearing.  Had I drilled the holes further out on the flange the bolt heads would not have fit inside the bearing holder.  

The bolts fit the flange and it seems  centered.  I plan on enlarging the center  hole anyway.	A longer section of this pipe will keep sand  away from the rotating shaft and out of  the lower bearing.

The pipe needs to be decently centered over the drive shaft.  The shaft is supported on top by a 2nd bearing but the pipe is not.   So thinking of making a HDPE plastic bushing for between the shaft the pipe on the top end of the pipe.  Then a hat over that to keep sand from falling in.

 

Thinking of making a rubber gasket for between the flange and the drum to better keep water and sand out.  Maybe just some RTV.

So what have I accomplished the past few days.

Cut the center hole in the drum
Mounted the lower bearing in the drum.

Removed the arbor/washer from the shaft.
Bored out the big toothed pulley hub to fit the shaft.

Located pulleys. bearings and jack shafts for the drive.
Cut the V groove in the 9 3/4" pulley.

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