(02-13-2013, 12:14 PM)Brian Wrote: [ -> ]The screws are 8 BA the smallest on this clock will be 10BA,
Brian.
Brian, so the HIGHER the number the smaller the screw on the BA scale?
(confirms my suspicions that BA stands for "Bloody Awful").
I watch in awe and enjoy your posts.
Steve
(02-21-2013, 03:14 PM)stevec Wrote: [ -> ] (02-13-2013, 12:14 PM)Brian Wrote: [ -> ]The screws are 8 BA the smallest on this clock will be 10BA,
Brian.
Brian, so the HIGHER the number the smaller the screw on the BA scale?
(confirms my suspicions that BA stands for "Bloody Awful").
I watch in awe and enjoy your posts.
Steve
Yes Steve I may even sneak in one 12 BA. your hands need to be steady when tapping, so not the thing to do after a night out with the lads.
Glad you enjoy my efforts Brian.
(02-13-2013, 12:14 PM)Brian Wrote: [ -> ]Glad you enjoy my efforts Brian.
Brian, I'm ready to bet lots that everyone here does.
I know Brian has my attention!
Jerry.
I too am watching with interest. Whilst I may never make a clock, there is plenty to learn in this thread that is applicable to machining in general.
I for one will never tire of watching your endeavors Brian.
"Billy G"
Thanks Lads, now I will have to by a bigger hat.
Just For interest the 12 Ba screw is .048" dia, as small as i want to go!
The photo shows a brass 12 Ba holding the tail end of a click spring, The large screw is 8 Ba The spring its self is interesting the finger is made straight, bent to fit the wheel, then hardened by beating it with a hammer to make it springy.
This one is from another clock.
[
attachment=4563]
Brian
---You may need to open the file to see it Poor photography???
,
[
attachment=4590]
At last the small drill has arrived and I can continue with the pinions. the first is a 5 tooth pinion for the hour wheel reduction
The set up is a mini grinder/ drill clamped to the vertical slide,
[
attachment=4589]
Indexing by a 50 t gear at 10 teeth. we get 5 holes to fit pins in for a overhung pinion.
Brian.
Now a lantern pinion using the same set up.
[
attachment=4624]
The new pinion on test. it works perfectly.
[
attachment=4625]
Minimum tooling --maximum satisfaction.
Brian.
