Carburetor choke plate
- timnealey
- Aug 9, 2015
- 2 min read
As was going through the carburetor, started to question. Where the choke plate should sit.
Normal have the closed, open, or warm up positions.
This was more to the old ideas or stories. Where the choke plate should start, completely flat or to have an angle at the closed position to begin with.
On my 1977 Ironhead xlch there is just a long metal wire that goes to a bolt on a lever that the wire is pushed in and squished down. This wire is only so long (Red). As it sits and sat as I got the bike. The wire would only barely be crushed by the bolt. This would place the choke plate at flat position(0%). If were to thread the wire through more (Yellow) so it is a more secure hold. It would angle the plate (1%). just enough to change the airfow in the barrel.
I've ran the bike both ways I'm not sure if I should just replace with a longer wire so its secure. So I went into Cinema 4d and Realflow and put together a particle flow through the barrel with both flat plate and tilted plate to see the difference.
I haven't had time to revisit this idea as the bike has changed since last looked at the postion this should be in and I have been running it full open.
It will still pop a lil bit on the back side and garbled at certain speeds. I wonder if this would help to even out the evolution of the combstion and still want to look into it. For as I have heard it what reason is there to have the choke then if it is not used in the opperation of the vehicle and only for start up. That if tuned correctly the choke plate is in use all the time.
I don't know much about this idea tho looking at the flow between the 2 having the choke plate slightly closed does affect the flow and could lead into port and polishing dynmaics of the barrel and head to better angle the mixture toward the spark.
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