06-04-2021, 10:09 AM
Hi Jon,
The third brush should be clamped, the later dynamos have a spring to add stiffness to the system, allowing the brush holder to be run unclamped but this doesn't exist on the DEL.
Ammeter jerkiness - don't know, could be that the ammeter has some internal friction, causing problems or there could be intermittent current flowing. Do you know someone who has a reliable moving coil meter such as an AVO8? This are the best way of checking and setting the system up. The Lucas ammeter is a bit Michael Edward Mouse.
The main brushes shouldn't move but, depending on the skills of the last person to disassemble/reassemble the dynamo, anything is possible!
Large terminal (1/4 BSF I believe) is D, smaller (2BA or 5/32 WW) is F. 3rd brush nearer main brush = max output. Run at 8A absolute maximum, I use LED lamps so run at 5A/2A. Set it up on an Avo, the Lucas ammeter lies without shame.
Regards
Tim R
The third brush should be clamped, the later dynamos have a spring to add stiffness to the system, allowing the brush holder to be run unclamped but this doesn't exist on the DEL.
Ammeter jerkiness - don't know, could be that the ammeter has some internal friction, causing problems or there could be intermittent current flowing. Do you know someone who has a reliable moving coil meter such as an AVO8? This are the best way of checking and setting the system up. The Lucas ammeter is a bit Michael Edward Mouse.
The main brushes shouldn't move but, depending on the skills of the last person to disassemble/reassemble the dynamo, anything is possible!
Large terminal (1/4 BSF I believe) is D, smaller (2BA or 5/32 WW) is F. 3rd brush nearer main brush = max output. Run at 8A absolute maximum, I use LED lamps so run at 5A/2A. Set it up on an Avo, the Lucas ammeter lies without shame.
Regards
Tim R