time delay = degrees

[Shannen Durphey]

Don.F.Broadus at ucm.com wrote:
> 
> A dial back to zero timing light delays the flash by the amount you turn the
> advance dial. The dial is calibrated in degrees. Working on building a dash
> mounted advance meter. Does anyone have the formula or conversion chart for
> time = degrees ?
> For example 30 degrees advance is equal to 12.5 ms  time , that way I could
> cal the advance meter correctly.
> 
> Thanks
> 
> Don
> 
> 
I'm not really good with math, but I get (1/(rpm/60))/360deg =
secs/deg.  

So at 2000 RPM, 30 degrees=2.5ms.  This seems to jive with my ecm
benched scope readings.

Shannen
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