Duclos Gearless Ep. 10

For the carburation and fuel tank, I’ll be using the trusty vapor carburetor. This type of carburetor has been very effective for our small model engines.

For more information on this type of carburetor, see Jan Ridders Website (you can switch it to English at the top of the page).

First, I prepared a piece of brass tube and angle, which I then soldered together. The angle will provide a flat mounting surface.

2016-03-25 12.10.43 (1024x576)

The filler neck is made with a radius to fit onto the tube. The nipple with the slot for the mixture adjustment is also prepared. Here I made the mistake of drilling the trough whole a bit big, and left very little “meat” at the bottom of the thread (why it was a mistake you’ll see in a few pictures down).

2016-03-25 17.04.32 (1024x576)

The filler and nipple are soldered in place.

2016-03-25 17.18.01 (1024x576)

The tank will be removable from the engine, using keyhole type hangers. I didn’t plan on a drain for the tank. To empty (and fill for that matter) the tank, it can be easily removed from the engine.

2016-03-26 14.26.06 (1024x576)2016-03-26 15.11.57 (1024x576)

A bezel and a lid are turned. The bezel has a watch crystal as sight glass glued in place.

2016-03-29 09.47.39 (1024x576)2016-03-29 09.48.00 (1024x576)

I also made a mixture adjustment nut, and that’s when disaster struck. While I was tapping the nut, I didn’t tap quite all the way through. And because there was so little material left at the bottom of the threads, the slightest torque twisted the nipple right off. I just about threw up and a few choice words where spoken that shouldn’t be repeated here.

2016-03-29 13.01.01 (1024x576)

Anyway, after I calmed myself down, I remade the nipple, this time with a bit smaller through hole, and assembled everything together.

2016-03-31 18.02.57 (1024x576)

To hang the tank to the engine, I made a bracket. Nothing crazy here, so I’ll let the pictures do the talking.

2016-03-29 10.41.52 (1024x576)2016-03-29 10.55.54 (1024x576)2016-03-29 11.19.13 (1024x576)

Added a couple of hangers to the bracket, for the tank to clip in, and mounted the bracket to the engine.

2016-03-31 11.26.15 (1024x576)2016-03-31 11.38.44 (1024x576)

And finally, a picture with the tank/carb in its position on the engine.

2016-04-04 14.07.46 (1024x575)


Thank you for stopping by my shop.

If you have any questions, please feel free to leave a comment and I’ll get back to you.



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