Something's up with my Blogger app on my phone so yesterday's blog below has been transferred to the PC, will see how it goes after reinstallation.
I've managed to free up the brake stand. The first mission
was to dismantle it, I thought it had a tapered pin holding the bottom
collar on and learned it couldn't be punched out with a pin punch. So
the collar was turned off in the lathe. And the remaining "pin" drilled
out in the mill which so happened to unwind...a 7BA screw!
The culprit was the handbrake stand has been drilled from
both ends and the holes are slightly misaligned making the handle stiff.
So the middle of the handbrake screw was relieved to only bear on the
ends. Turns very freely now.
A new collar was made and a 7BA screw reinstated. Also the
angle needed to be milled to remove the root radius to clear the nut.
The nut was chamfered also.
The brake shaft bearings were shortened to not side load
the handbrake screw with the lever and nut. These were set up in the 4
jaw chuck using a 5/16" arbor in the tailstock..a technique which I find
very handy to square up and quickly centralise small parts like these.
New cranks are being made up from 3mm steel plate and round bar and will be completed tomorrow. Along with the new brake shaft.
Happy steaming!
Nigel
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