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| cfellows:
I started this engine back in the fall of 2007 and finally got it running. The past couple of days, I installed some points, a condenser and a dual wire coil I got from Jerry Howell. Hooked it up to a vapor carb and finally got it started. Clearly got lots of tuning to do to get it to run the way I want, but it's a start! There is a build article over on HMEM for those of you that are interested. http://www.youtube.com/watch?v=jZTSmiSO-oE Chuck |
| sbwhart:
Very nice Chuck I struggle to understand how the vapor carb gets to make the vapor is their some sort of feed from the engine to make bubbles in the fuel. Thanks for showing. Stew |
| Bernd:
Nice Chuck. :thumbup: Sounds like it's got a slight gas problem. :lol: :lol: :lol: :lol: Bernd |
| cfellows:
--- Quote from: sbwhart on July 02, 2011, 02:26:11 AM ---Very nice Chuck I struggle to understand how the vapor carb gets to make the vapor is their some sort of feed from the engine to make bubbles in the fuel. Thanks for showing. Stew --- End quote --- Thanks Stew. The engine provides suction through the clear tube that goes to the vapor fuel tank. This causes air to be sucked into the tank through the small brass fixture on the left side of the tank lid. The suction is pretty aggressive and causes a strong stream of incoming air to be directed against the surface of the fuel. As you can see in the video, the fuel is splashing all over the place. That is not from vibration, but rather from the incoming stream of air. In other engines I've built, there really doesn't need to be any splashing. Apparently the fuel is constantly evaporating into the space above the fuel and the engine just keeps sucking this layer away as it's generated. This engine performance is so eratic because the fuel regularly splashes up into the tube and gets sucked into the engine which causes flooding. I think a carburetor is going to provide much steadier performance. Chuck |
| Bogstandard:
Very nice indeed Chuck, like all your designs. I am looking at a slightly enlarged vapour generator for when I start on my R&B engine build. The engine is designed to run on both petrol and propane, but the carbs for each type are different. I am looking at maybe one carb that can run from either gas or petrol vapour, to save having to make both. John |
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