TC EXU Mirror

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loustaller
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Joined: Fri Jul 21, 2017 7:51 pm

TC EXU Mirror

Post by loustaller » Sun Apr 21, 2024 8:54 pm

This may be the most lame question ever! I feel lame asking it but I can't figure out what's going on. I bought a reproduction interior mirror which is a copy of a DEMSO mirror but for the life of me I can not figure out how to adjust it! I loosen the Acorn nut which allows the mirror head to swivel to the side but when I tighten the acorn nut the mirror head will not stay in the needed position, It moves back to the straight forward position. Granted, the mirror is a piece of crap but it should still be able to adjust so the driver can see behind him! Anyone with this type of mirror experience this? What's going on? :?
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Rob Reilly
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Location: Indiana, USA

Re: TC EXU Mirror

Post by Rob Reilly » Mon Apr 22, 2024 4:30 am

There should be a wave spring inside that provides tension or friction to hold the mirror in any position.
Perhaps you are over-tightening the acorn nut. It should be tight enough to produce friction, but not so tight as to pull the mirror back to straight.
Desmo mirror EXU.jpg
1937 TA 1271
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loustaller
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Re: TC EXU Mirror

Post by loustaller » Mon Apr 22, 2024 7:24 am

IMG_8257.jpg
IMG_8257.jpg (111.05 KiB) Viewed 169 times
It seems I'm lacking a wave washer. As far as over tightening the acorn nut, I could have but as soon as it has any pressure it starts to return to the straight ahead position, while the head is loose enough to droop down. I bought the mirror from FTFU so I'll contact Doug for his input. A minor issue but also an important one.
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Duncan M
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Re: TC EXU Mirror

Post by Duncan M » Mon Apr 22, 2024 9:03 am

Lou, you have not taken it apart all the way. There should be a sort of ball and socket joint inside. Maybe it needs a light application of grease? These do operate a bit on wishful thinking, and tend to be a bit difficult to deal with as far as adjustment. Tightening it too much will lock it in place. I have a split lock washed behind the nut. I may have added that...

Tell us what Doug's thoughts are. Always interesting to hear what the vendor has to say.
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loustaller
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Re: TC EXU Mirror

Post by loustaller » Fri Apr 26, 2024 8:16 am

Here's a photo of the interior mirror completely apart. There doesn't seem to be anything that would help the mirror head stay in the needed position. I spoke to Doug at FTFU and he will be sending me a replacement mirror.

IMG_8258.jpg
IMG_8258.jpg (106.05 KiB) Viewed 126 times
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