John Harrison Grasshopper Escapement 3D Printed Clock

Описание: Get the files on My Mini Factory:
https://www.myminifactory.com/object/...

Design inspired by John Harrison invention
https://en.wikipedia.org/wiki/John_Ha...
He designed the grasshopper escapement as an attempt to improve the accuracy of clocks
He took on the challenge of designing a precise marine clock

The design of the escapement is closely similar to the dimensions and angles layed out by John Harrison, the size of the escape wheel is increased to 210 mm to allow for an easy print on a FDM printer

Final release, a set of instruction and videos are coming
Included with the files is a Xhtml file that can be opened in a browser and gives you a 3D representation of the complete clock as an aid for building
expect to spend a week or two to print all the parts
Clock will run over 24 hours with a 1 meter drop
It runs with an accuracy well under +/- 1 minute a day

Existing videos:
   • Completed prototype of a 3D printed Grassh...  
   • Design and Test run of a 3D printed Grassh...  
   • John Harrison Grasshopper escapement 3D pr...  
I did quite a few updates to the files, there should be all up to date

Supplies needed:
M3 screws and nuts
10x bearings 605
6x rod 5 mm x 100 mm
piano wire 2 mm 30 to 80 mm for shafts
piano wire 1 mm for maintain spring
piano wire 0.5 mm for suspension spring
BB steel ball to load the bob
10 mm dowels for the pendulum rod
3 to 4 Kg weight to power the clock
glue