Just something else to add under this topic re how to find the third brush.
Harry Hale's Austin Electric book and Green companion page 205 both feature the 3rd brush position and how to access it on DEL. Looking from O/S wing, it is on the right hand side with the cover removed, and the 3rd brush securing screw is at 4/5 o clock position if you were looking from the end plate inwards. It is thinner in form as per later dynamos.
My maximum charge comes with the right hand (third) brush right up next to the left hand one, and I needed to push it down, clockwise when viewed from the end, to reduce charge.
Questions:
Can the DEL 3rd brush be left so it has the same easy-to-adjust friction movement as later dynamos, or is this a bad idea?
When in 'maximum' position, ammeter action smooth and higher than I would expect. When moved to restrict, the ammeter needle is very jerky although it does reduce overall. It is moving through a wide range. What can be causing the jerkiness?
Would a DEL owner check my first statements and check you agree please? I am a little wary as Hale's text implies the two main, (thicker) brushes can be moved too - mine do not appear to be at 90 degrees to each other as in his theoretical diagram. I'd also like the clarify the position of large and smaller dynamo terminals and which is which. All the references to them are slightly ambiguous depending on how you view them.
Harry Hale's Austin Electric book and Green companion page 205 both feature the 3rd brush position and how to access it on DEL. Looking from O/S wing, it is on the right hand side with the cover removed, and the 3rd brush securing screw is at 4/5 o clock position if you were looking from the end plate inwards. It is thinner in form as per later dynamos.
My maximum charge comes with the right hand (third) brush right up next to the left hand one, and I needed to push it down, clockwise when viewed from the end, to reduce charge.
Questions:
Can the DEL 3rd brush be left so it has the same easy-to-adjust friction movement as later dynamos, or is this a bad idea?
When in 'maximum' position, ammeter action smooth and higher than I would expect. When moved to restrict, the ammeter needle is very jerky although it does reduce overall. It is moving through a wide range. What can be causing the jerkiness?
Would a DEL owner check my first statements and check you agree please? I am a little wary as Hale's text implies the two main, (thicker) brushes can be moved too - mine do not appear to be at 90 degrees to each other as in his theoretical diagram. I'd also like the clarify the position of large and smaller dynamo terminals and which is which. All the references to them are slightly ambiguous depending on how you view them.