Got all the gears, no ideas…

Never trust scientists; they make up everything. No wait…that’s atoms…

Now that the gearbox is on, I can assemble the gear train that goes with it. First, I slotted in the Lead Screw…

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I was surprised that the holes – one either side of the Gearbox Casing – into which it goes were just plain with no bearings. Obviously, this Lead Screw never turns at any great speed. Nevertheless, I cleaned the bearing holes with 2500 and oil first.

Using photos taken months ago when I dismantled and the diagrams in the manual, I found it quite easy to assemble the rest of the gears. This is the 52T – I think the “T” stands for “Teeth” – gear at the end of the Lead Screw and the 26T gear on the end of the gearbox gear shaft…

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The Backplate…

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…and the Change Gear Quadrant which fits on the Guide Bar…

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Interestingly, when I tightened up the Change Gear Quadrant (CGQ) on the Guide Bar, it stopped the Input Shaft within the Guide Bar from turning. Strange…but I slackened it slightly and rotation was again possible.

The two spigots on the CGQ are marked on the diagram as parts 206 and 209 but are omitted from the list. The holes on their ends lead to holes underneath and are for lubrication. I put three gears on…

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The left is a 19T/57T Fixed Cluster Gear – 19 teeth on the small gear and 57 teeth on the large gear – and the middle is a 19T/57T Reversible Cluster Gear. This is the one referred to as “A” on the Top Cover diagram. The right is a 72T gear. It is bolted to the Input Shaft of the Gearbox. The black bar between the two 19T/57T gears is part 211 on the diagram but again it doesn’t appear on the list, so I don’t know its correct name. No matter; it is able to swing anti clockwise to allow the middle gear to be reversed, like this…

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…ending up with this…

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The staining is precleaning and won’t come off. The cover was cleaned, reassembled and fixed on…

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At the other end of the Lead Screw, the end was secured in its mount and the handle attached…

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A view from the Tailstock end…

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Then the Rack was cleaned…

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…and bolted back on to The Bed above the Lead Screw…

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I oiled everything as I went along and everything turns nice and smoothly, almost silently.

Next, dismantling and cleaning The Headstock.

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