Thread: Fitting a brake to Hercus 9"?

Necessary not really.
Feasible yes.
Would fit it to the Top pulley shaft,inboard above the Chuck.
I would use a Small (Disc Brake),and mount the Caliper to a fabricated bracket mounted to the Vertical counter shaft support if you have that type of mount,if its the Horizontal somewhere suitable.
I would either use a lever or foot mounted resivoir,something off one of the import motor bikes.
Wouldnt know how to do it electrically.

just a thought but you could probably use a disc brake off a push bike it doesnt need to be fancy and it seems it would be the easiest to hook up as it only has a cable just make sure you hook something up to cut power or you will probably stall the motor if you hit it by mistake

It should be possible to rig an electric clutch as used on a car air conditioner compressor to function as a brake.
Another possibility would be a small self-contained clutch as used on some tractor PTOs. Some of those have a brake built into the mechanism so you could actually have a clutch and brake in one. The Harrison L5 uses a combination clutch / brake unit fitted in the headstock.

Then there are some aftermarket parts

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Cheers,

Findlay.

Don't forget these machines have threaded spindles, running them in reverse or harsh spindle braking can cause the chuck to come off.