Vacuum Advance Affects Dwell?
3rd Gear Member
Joined: Feb 2007
Posts: 551
RE: Vacuum Advance Affects Dwell?
ORIGINAL: JMD
Hello Mike, I was waiting for your answer..Everything I have always heard, and everything I "see" in my head tells me that if dwell changes with timing, then something is more loose than ideal, or the design is less than ideal.
It is my understanding that the breaker plate is supposed to move in a concentric circle around the distributor shaft in a precise manner so to not affect dwell when the breaker plates position is altered by either mechanical or vacuum advance.
The simple phrase I have always applied to this situation is "Dwell affects timing, timing does not affect dwell". ???
Thanks Mike, I was begining to doubt my most basic understanding of how a distributor is supposed to work.
ORIGINAL: mikethebike
Dwell angle is how long (in degrees of distributor rotation) the points stay closed and allow saturation of the coil. I fail to see how rotating the distributor or changing when the vacuum advance comes in can affect the physical relationship of the points to the distributor cam.
Dwell angle is how long (in degrees of distributor rotation) the points stay closed and allow saturation of the coil. I fail to see how rotating the distributor or changing when the vacuum advance comes in can affect the physical relationship of the points to the distributor cam.
It is my understanding that the breaker plate is supposed to move in a concentric circle around the distributor shaft in a precise manner so to not affect dwell when the breaker plates position is altered by either mechanical or vacuum advance.
The simple phrase I have always applied to this situation is "Dwell affects timing, timing does not affect dwell". ???
Thanks Mike, I was begining to doubt my most basic understanding of how a distributor is supposed to work.
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