- Original Message -
From: John Thornton bjt...@gmail.com
IIRC Jeff Eppler cut a fusee for a mousetrap powered car...
John
Sadly a fusee for clock work needs a curved profile to match spring forces
rather than straight line.
I think they are hard to cut on a CNC lathe although
John Prentice wrote:
From: John Thorntonbjt...@gmail.com
IIRC Jeff Eppler cut a fusee for a mousetrap powered car...
Sadly a fusee for clock work needs a curved profile to match spring forces
rather than straight line.
I think they are hard to cut on a CNC lathe although reasonably easy to
On Wed, Jan 25, 2012 at 12:38 PM, Lester Caine les...@lsces.co.uk wrote:
John Prentice wrote:
From: John Thorntonbjt...@gmail.com
IIRC Jeff Eppler cut a fusee for a mousetrap powered car...
Sadly a fusee for clock work needs a curved profile to match spring forces
rather than straight line.
Dave Caroline wrote:
On Wed, Jan 25, 2012 at 12:38 PM, Lester Caineles...@lsces.co.uk wrote:
John Prentice wrote:
From: John Thorntonbjt...@gmail.com
IIRC Jeff Eppler cut a fusee for a mousetrap powered car...
Sadly a fusee for clock work needs a curved profile to match spring
As John said, in horology, the curve of a fusee has to
exactly match the force of the mainspring if it is to do its
job properly. The idea is that the force of a wound up
spring is much greater than that of a spring which is mostly
unwound and the fusee is there as a continually variable
Found my pics of the few pages in
The science of clocks and watches
A. L. Rawlings British Horological Institute 1993
about the fusee
http://www.collection.archivist.info/archive/DJCPD/PD/2007/2007_06_06_Rawlings/
Which has some maths for those wishing to put it in gcode
Dave
On 25 January 2012 16:22, Ian W. Wright watchma...@talktalk.net wrote:
It is a long,
tedious but ultimately simple and low-tech process and, to
get it right, this is the only way to do it.
I would have thought that, in principle, a torque meter and encoder
could accurately measure the
On 25/01/2012 16:39, andy pugh wrote:
On 25 January 2012 16:22, Ian W. Wrightwatchma...@talktalk.net wrote:
It is a long,
tedious but ultimately simple and low-tech process and, to
get it right, this is the only way to do it.
I would have thought that, in principle, a torque meter and
