Evening Chaps. I'd like to make a '1 key fits all' for my ST. I remember a while ago, I think from Philippe, an article about rebuilding the locks to suit a key. Can I find it, can I bugger. Anyway the tank isn't an issue because any key fits that but I was wondering whether it's easier to rebuild the seat lock or ignition. I have a the key for both. I'd prefer to rebuild the seat lock is possible, that's the one I haven't got a number for.
Cheers
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Keys, making matching numbers
Moderators: chrisu, paul doran, Taffus, KeithZ1R
Re: Keys, making matching numbers
Hi Pete
rebuilding the seat lock is the most difficult one. Once you have the lock open, it's a piece of cake but opening it is another matter.
On the underside of the lock sits a small pin, flush with the outside. If you can get that one out (use a drill) you can remove the lock cylinder out of the barrel. A good advice: find some old locks to practice. If you do so, you'll find out that removing the lock cylinder out of the barrel is the most difficult part.
If you succeed in removing the lock cylinder you'll see 5 or 6 small copper plates through the cylinder. You can remove them and change their position. Those plates have rectangular holes in them at different heights. Different heights means a difference of a few tenths of a millimeter! Attention when removing the plates, don't loose the very small springs. Those are located in small holes in the cylinder beneath the copper plates.
The position of the rectangular holes in the plates determines the position of them in the lock cylinder. There are 4 types of plates and the combination of those permit the key to turn or not.
When you put the key in the lock, you'll see those plates move.
With the original key, the plates sit flush on the outside of the cylinder so that you can turn the cylinder in the lock barrel.
Take your other key and try to achieve the same effect by changing the position of the plates.
Attention! Sometimes you'll need 2 or sometimes 3 plates with the rectangular hole at the same place in order to get them flush with the outside of the cylinder.
Make sure you have spare copper plates. If you don't have them, find some other old locks of the same period and open those.
New copper plates (which you can buy at your local dealer) won't work in an old lock, they're different.
My explanation is complicated but once you have the lock open, you'll understand it.
Good luck, you'll need all of it !
GrtZ
Philippe
rebuilding the seat lock is the most difficult one. Once you have the lock open, it's a piece of cake but opening it is another matter.
On the underside of the lock sits a small pin, flush with the outside. If you can get that one out (use a drill) you can remove the lock cylinder out of the barrel. A good advice: find some old locks to practice. If you do so, you'll find out that removing the lock cylinder out of the barrel is the most difficult part.
If you succeed in removing the lock cylinder you'll see 5 or 6 small copper plates through the cylinder. You can remove them and change their position. Those plates have rectangular holes in them at different heights. Different heights means a difference of a few tenths of a millimeter! Attention when removing the plates, don't loose the very small springs. Those are located in small holes in the cylinder beneath the copper plates.
The position of the rectangular holes in the plates determines the position of them in the lock cylinder. There are 4 types of plates and the combination of those permit the key to turn or not.
When you put the key in the lock, you'll see those plates move.
With the original key, the plates sit flush on the outside of the cylinder so that you can turn the cylinder in the lock barrel.
Take your other key and try to achieve the same effect by changing the position of the plates.
Attention! Sometimes you'll need 2 or sometimes 3 plates with the rectangular hole at the same place in order to get them flush with the outside of the cylinder.
Make sure you have spare copper plates. If you don't have them, find some other old locks of the same period and open those.
New copper plates (which you can buy at your local dealer) won't work in an old lock, they're different.
My explanation is complicated but once you have the lock open, you'll understand it.
Good luck, you'll need all of it !
GrtZ
Philippe
the differences between a little boy and an adult man is the price and size of their toys!
Re: Keys, making matching numbers
Thanks Philippe, I've copied and pasted it into a text document and it now sits safely in my Bike folder.
Much appreciated
Cheers
Much appreciated
Cheers
Pete
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