What makes a FED shutter so noisy?

[colyn]

like you, I found that my FEDs arrived with shutters quite highly tensioned. They go quieter after being set up. A clean and lube may well free up some parts and allow even less tension to be used, so making them even quieter. Some remain quite snappy. Did you see a braking mechanism when overhauling cameras? I assume that this is not the same as the bits which limit the travel of the curtain drums (which I think could be the culprits here).

The braking mechanism is located behind the cover at the bottom inside the throat. It works by placing a bit of drag on the bottom shutter tape and lathe. It also acts as an anti-bounce mechanism.

 

[fidget]

Thanks for the help everyone. I hadn't thought of those bits as brakes and am still puzzled, I'll give it some thought before I strip the 3a. I'll still need to determine where the noise is generated. If slow (or bulb) shutter speeds are selected, you can hear that the metalic noise, if you have any, is made at the end of travel of both curtains. Faster speeds seem to blur the two sounds into a single noise. I think that the first place to try is in the parts which limit the travel, the stops if you like....anyway, that's a little way off so thanks for your input..and watch out for the sale of a parts camera if it turns to......
Dave