Lucas 16W & 14W 2-Speed Rear & front wiper circuits SE5a

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Re: Lucas 16W & 14W 2-Speed Rear & front wiper circuits SE5a

Post by tony.idle » Wed Apr 10, 2013 6:37 am

Looks good to me. Just get rid of the bi-directional arrow on the crankwheel of the 14W. "Rocking" might be better replaced by "switching". The front wiper circuitry is common to all cars I've seen using the 14W.


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Re: Lucas 16W & 14W 2-Speed Rear & front wiper circuits SE5a

Post by toomanysabres » Wed Apr 10, 2013 8:16 am

Lucas engineering is/was always very clever. Simple to make mechanical parts performing complex functions. You could never achieve that parking system electrically.
The Sabre/Sabra motor is from a Jag MKII & earlier. 6 loose wires and an earth. The rotary switch is 3 pole, 3 way & 12 positions on the switch, not all of them have lucar tags, numbered 1 -13 with no 9 (wot :roll: ). The switch is from an XK140. The motor has an electromagnet not a permanent one with 2 coils. Try working that one out and you think you had problems with a GTE :D :D :D .
Jef Neefs and I burnt up many late night Skype hours studying that.
Sabre-Sabra-Jag MKII.jpg
Sabre-Sabra-Jag MKII.jpg (244.63 KiB) Viewed 2276 times


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Re: Lucas 16W & 14W 2-Speed Rear & front wiper circuits SE5a

Post by toomanysabres » Wed Apr 10, 2013 8:20 am

I've sent you a pm with my email address - cheers - Geoff

ps I have deleted my earlier messages with now obvious errors in them. New diagrams being worked on.


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Re: Lucas 16W & 14W 2-Speed Rear & front wiper circuits SE5a

Post by Pepe » Thu Apr 11, 2013 1:53 pm

Provided Geoff a copy for the Wiki....


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Re: Lucas 16W & 14W 2-Speed Rear & front wiper circuits SE5a

Post by Pepe » Mon Apr 29, 2013 2:22 pm

Overhauled my 16W wipermotor last weekend. 14W is on next weekend.
Found that - it seems as usual and known - the brushplate is brittle, cracked and the blue wire brush has obviously suffered from heat (pertinax baseplate is black and britle). Still usable but weak.... Brushes themselve look usable also the rest of the motor looks good - well, at least after a good cleaning and fresh grease and paint.
I have found some plates out there for 14W, but none for the 16W on which the parkswitch housing is different. Converting should be no problem as the brush plates seem to be the same measurements?

I also thought if it may be worth to cut a new, longer lasting baseplate from FR4 epoxy.
Then the original brushholders could be crimped onto this, possible assisted with new a bit stiffer springs for better contact. Making a more robust design...


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Re: Lucas 16W & 14W 2-Speed Rear & front wiper circuits SE5a

Post by philhoward » Mon Apr 29, 2013 6:41 pm

I'm sure I've used the armature section from a 14W on a 16W, so it follows that the brush plate is the same BUT I can't be 100% sure.


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Re: Lucas 16W & 14W 2-Speed Rear & front wiper circuits SE5a

Post by Pepe » Sat May 04, 2013 8:43 am

To me - from bad pics on the net - I think the same.
But probably I think cut and file the plates from longer lasting FR4 Epoxy material. More work of course. Let's see....


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