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Message |
    
Tobias_f
Tinkerer
Username: Tobias_f
Post Number: 3
Registered: 06-2009
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, November 22, 2010 - 11:17 am: | 
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Hello,
I have been working on a friend's FED 3a, confident that I could sort it after having rebuilt one of the Barnack clones, and a IIIa. The escapement appeared to be sticking, or not triggering the second curtain reliably, thus, assuming it functioned like a Barnack, I cleaned it.
Now of course I have no idea how many winds it needs on its little spring, as I did not expect to find this issue at all.
Have any of you advice on reassembling the escapement, before I enter a risky trial and error stage?
Thanks,
Tobias |
T6nn
Tinkerer
Username: T6nn
Post Number: 10
Registered: 06-2009
Rating: N/A
Votes: 0 (Vote!) | | Posted on Friday, November 26, 2010 - 06:10 am: |
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The spring tension isn't that critical, it just needs to be enough to release the second curtain reliably. The speed of escapement is determined by the star wheel and pallet. You need to adjust the shorter speeds by slightly moving the escapement around. I have also adjusted the longer speeds by adding some weight to the pallet, but this is usually unnecessary.
The only critical thing with that escapement is to not alter the teething between the big "O-gear" and the gear next to it -it's time consuming to find the right position by trial and error. |
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