Lotus Elan

Window motor

PostPost by: Lotus Stu » Sat Nov 24, 2018 2:57 pm

My passenger side window has slowed to a crawl. Despite trying the usual remedies, I have come to the conclusion that replacing the motor for the "72 elan sprint makes the most productive use of time and energy. Does anyone have a source in the U.S. for a replacement or can identify the motor that Lotus used for the power window?
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PostPost by: Elan45 » Sun Nov 25, 2018 7:20 pm

The window motors in the Elan were sourced from the English Ford wiper motors. (Anglia, Cortina mk1 & 2) The drive portion of the motors are different, so unless you are lucky enough to find a NOS unit, you'll still have to do some work with your motor.

When I got my 1st Elan, neither window would work. At least one of the 2 screws holding the motor itself together was broken, allowing the armature to touch the permanent magnet fields. Replacing the screw, allowed them to start working. The screws are 10-32 UNF, IIRC 4 inches long. When I couldn't get screws that long over the years and at least 4 other S3 Elans, I've used 10-32 all thread rod. No, 10-24 won't work!

The other issue has always been the commutator, which has an air gap between the segments. Use a business card to clean between the segments. Clean the commutator surface 1st w/ scotch bright, then clean between the segments w/ business card.

Then realize they're never going to operate that quickly. Cleaning the insides of the switches helps too.

Roger
'67 Elan S3 SS DHC
'67 Elan FHC pre-airflow
'67 Elan S3 SE upgrade to 26R by Original owner
'58 Eleven S2 (ex-works)
'62 20/22 FJ (ex-Yamura)
'70 Elan +2S RHD
'61 20 FJ project
'76 Modus M1 F3
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PostPost by: gjz30075 » Mon Nov 26, 2018 10:16 am

Here's a thread with some detail about Cortina motors and using a Mustang motor
lotus-chassis-f36/power-window-lift-motors-cross-over-parts-t25540.html
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36/5727 pre airflow coupe
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PostPost by: The Veg » Mon Nov 26, 2018 7:54 pm

I don't know if they're different to the motors in a Plus 2, but if not then you can use the same motor as a '70 Chevelle. This motor was used in a long list of cars and is easy to get.
1969/70 Elan Plus 2 (not S) 50/2036
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