Friday 3 November 2023

Turntable build part 4

The more I've been using my new modules the more I felt I wanted to be able to move the turntable without reaching into the scene. I didn't want a motorised solution. I like turning things by hand, which really is in keeping with the time period I model. I hadn't been able to find a hand crank system for a turntable so in the end I plucked the courage to build my own. 

I found some plastic gears on Aliexpress and picked up some brass rods from my local hardware store. I ordered two sizes of gears and the slightly smaller one looked like it would do the trick. However, I needed a solution for attaching the gear to the rod, which would be the turntable spindle. I had some Meccano that my kids don't really play with. So I used one of the collars and used small bolts to attach the gear to the collar, which is attached to the brass rod (see photo).

I made up a plywood box to house the gearing from scrap ply. The brass inserts from electrical connectors held the wormgears in place on the rod. For the crank wheel, I used my largest hole saw to cut a hole in the edge of the layout, I used the cutout as the crank wheel, which is attached to the rod with grub screws. A scrap piece of metal was spruced up for the handle. 

Overall, I'm pleased with the performance. The turntable moves nicely and slowly. I may have to refine a few things as the crank wheel is a little snug in the hole in the layout edge. But, for now, it is working and looks pretty good. 

The next thing for the turntable will be to work on the decking and details, followed by some scenery in the pit. 

Doesn't look like much but its the beginnings of a hand crank system. 
The large gear is on the turntable spindle. The worm is on the hand crank. I added a bottom plate to prevent the turntable spindle from flexing when turning. 

The completed hand crank at the layout's edge. The crank can be removed for transport. 




1 comment:

  1. If that doesn't work, you can always build one on an old stereo plug as a rotating bearing like Dave Frary wrote about in Model Railroader.

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