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Old 05-25-11, 04:01 PM   #1
Airburst
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Sturmey-Archer trigger won't stay in gear

I've been using a traditional SA trigger shifter on my folding bike for more than a year, and recently it's started slipping out of first gear. The slipping seems to be mostly caused by road vibration, but I've had it happen a few times on perfectly smooth roads. The finger lever thingy (technical term) also rattles quite a lot, which is annoying, and I think the two problems are linked. Is this a common problem? If so, is there a fix, or do I need a new shifter?

Thanks in advance
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Old 05-25-11, 06:23 PM   #2
fietsbob
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Clean and Lubricate, is step 1. trad Aw3 triggers are cheap .
even the special Brompton ones are not that dear in cost.
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Old 05-25-11, 06:39 PM   #3
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Sounds like the spring is broken. I have not had much luck disassembling them. Replace the shifter if cleaning and lubricating doesn't work.
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Old 05-25-11, 08:26 PM   #4
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There's a spring in there?
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Old 05-25-11, 08:40 PM   #5
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Those trigger shifters are bombproof and last forever, but once in a while you'll get a bad one. I bought a NOS '70s shifter that rattled and hung up between 2nd and 3rd. I finally replaced it after putting up with it for a year. It cost me all of $12.
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