Can you disassemble a Sturmey Archer Shifter?
02-08-19, 09:31 PM
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Can you disassemble a Sturmey Archer Shifter?
The top plate on my shifter is a little bent. I would love to bend it back flat, but I don't see how. 
02-08-19, 10:12 PM
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You can disassemble pretty much anything.
The real question is, can you reassemble it after?
...Here's another ask, with some answers.
The real question is, can you reassemble it after?
...Here's another ask, with some answers.
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A race bike in any era is a highly personal choice that at its "best" balances the requirements of fit, weight, handling, durability and cost tempered by the willingness to toss it and oneself down the pavement at considerable speed. ~Bandera
02-08-19, 11:12 PM
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It's been done. People usually do it to replace the spring or to grind sharper detents into it when it's worn down. You drive the rivets down a little and it all comes apart . Getting the rivets back into the holes is a challenge, though. I wouldn't do it just to straighten the plate.
02-09-19, 04:41 AM
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This is something I've done many times and it is a delicate operation. The issue here is that this is a rare and valuable shifter and an important part of your vintage bike. There's no room for error and no getting by with improvised tools. If you do decide to do it, I can walk you through. It would be good if you had a less important shifter to try it on before this one though.
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02-09-19, 07:25 AM
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Sure, especially if you are not opposed to replacing the original pins with small screws or plan on making replacement pins.
There are a number of guides available online, I probably have them saved somewhere. I can look them up if you are interested.
EDIT:
- https://genetics.mgh.harvard.edu/hanczyc/pdfs/satriggers.pdf Overview of all different models
- Model GC2 rebuild - Classicthreespeeds who made new pins
- Sturmey Archer trigger service - Smutpedaller who replaced them with M3 x 20mm screw and bolt
Alternatively you get still get lots of them on British eBay
There are a number of guides available online, I probably have them saved somewhere. I can look them up if you are interested.
EDIT:
- https://genetics.mgh.harvard.edu/hanczyc/pdfs/satriggers.pdf Overview of all different models
- Model GC2 rebuild - Classicthreespeeds who made new pins
- Sturmey Archer trigger service - Smutpedaller who replaced them with M3 x 20mm screw and bolt
Alternatively you get still get lots of them on British eBay
Last edited by JaccoW; 02-09-19 at 07:38 AM.
02-09-19, 08:31 AM
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Thanks everyone. The journey continues .
02-09-19, 11:33 AM
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Sure, especially if you are not opposed to replacing the original pins with small screws or plan on making replacement pins.
There are a number of guides available online, I probably have them saved somewhere. I can look them up if you are interested.
EDIT:
- https://genetics.mgh.harvard.edu/hanczyc/pdfs/satriggers.pdf Overview of all different models
- Model GC2 rebuild - Classicthreespeeds who made new pins
- Sturmey Archer trigger service - Smutpedaller who replaced them with M3 x 20mm screw and bolt
Alternatively you get still get lots of them on British eBay
There are a number of guides available online, I probably have them saved somewhere. I can look them up if you are interested.
EDIT:
- https://genetics.mgh.harvard.edu/hanczyc/pdfs/satriggers.pdf Overview of all different models
- Model GC2 rebuild - Classicthreespeeds who made new pins
- Sturmey Archer trigger service - Smutpedaller who replaced them with M3 x 20mm screw and bolt
Alternatively you get still get lots of them on British eBay
The original pins can be used even if the hole in the back of the case is too loose. That does sometimes happen even if you are super careful drifting the pins out. What I do is set the pins in place and give them a slight center punch to flare the tops. You do need a good, hardened fine point center punch like this to make a clean job of it.
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