Lotus Elan

WIndow Wiper Motor

PostPost by: Terry Posma » Thu Mar 09, 2017 1:11 pm

I have a Lucas DR3A 2 Speed wiper motor which I am installing after 25 years of no operation.

All works apart from the fast speed appears overly fast. Did the original wiring have a resistor on the fast wire to slow the speed down? The wiring diagram in the workshop manual does not show anything. If there was one does anyone know what the specs where?
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PostPost by: gus » Thu Mar 09, 2017 1:54 pm

overly fast?

no there was no resistor

try it installed and see if you still think so

count yourself lucky
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PostPost by: crypto » Thu Mar 30, 2017 10:04 pm

The really good drivers have the bugs on the side windows (cit. Walter R?hrl)
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PostPost by: Terry Posma » Thu Apr 06, 2017 8:29 am

I found that the motor did not have the resistor wire/coil wound around the field coil (probably taken out by the previous owner as burnt out or something). The reason I had two speeds and rather erratic at that was a bad connection on the fast wire.

Replaced all the internal and external wires (not the windings) and put a 10w 8.5ohm ceramic resistor on the fast wire and all works very nicely.

I am not in any way a electrical person and it was in the end pretty easy when I determined to do it.
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