Mainspring Barrel Arbor

[spiro13]

Hi

Does anybody have any tips on installing a Mainspring Barrel Arbor? I've been fighting with one for quite some time.

Thank you,

Tony

 

[watchweasol]

Hi Spiro  once the mainspring is installed place the arbour in position and work the mainspring end round it with a stiff needle in a pin vice in a rotary fashion untill the spring end sits snug and attached to the arbour.

[rogart63]

Could be hard if the mainspring is new and the arbor is larger then the loop . Try to lean it in from an angle . With the tab  to the opening . You could use a pin vice to hold the arbor . Ones in it will correct itself when you first wind the movement . 

[nickelsilver]

Yes to both above. Ideally you have a mainspring arbor holder (yes this is an actual tool and darn handy), basically a slide locking pinvise for distinct diameters. With this you can confidently coax the most stubborn arbors into the mainspring loop. I have a bunch of them but honestly most of the time I use sturdy nickel tweezers and the tilt-it-in technique. I also have a number of hours of barrel arbor floor searching under my belt.

[yankeedog]

Hold with one pair of tweezers  press in with the flat of another. Do this inside a plastic bag to prevent  flyers 

[anilv]

I lay a thin sheet of rodico and make a divot for the end of the arbor. This holds the barrel securely.

Then proceed to hold the arbor flat while working the spring around with a needle (oilers are too delicate).

Anilv

[spiro13]

Thanks all for the great tips. 

Tony

[jdrichard]

I get it in sideways entry and then use a screwdriver to Wedge in the last part; given that it is very tight around the arbour.


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