by Randy » Sun Mar 12, 2017 5:24 pm
Welcome to the fold Marcus.
Brass wire won't be your best choice.
You want some small diameter spring steel..and not too stiff.
Cousins UK- parts house in your country , should be able to supply what you need.
They may also sell an assortment of click springs,..you might want to check as that's an easy way to get spares.
From my own experience,. you should take these springs out using a small plastic bag..that keeps most of them from flying off into space.
I can also heartily recommend a 12 inch magnet. They are indispensable when trying to find small items.
As for the escape wheel,..I think that you'll find that it needs to be pressed onto the shoulder-shelf of the pivot. ( the bottom side of it as it appears on the picture you supplied ).
You will need to stake it on to ensure that it stays in place and doesn't rotate.
You'll need to place it into the movement plate to ensure that the teeth are oriented correctly.
All the best...hope this was helpful
Randy