Mechanical / Wind up - 60 minutes timer Answered
I am planning to do one project where I need to use mechanical timer - or better said mechanism. It needs to run for 60 minutes and it does not need to be really precise. So +/- 5 minutes is not a problem. Now... the main "problem" bothering me is the size of this mechanism. Maximum diameter of the mechanism should be under 3.5cm and maximum thickness can be 2.5cm.. This is why I can not use mechanical mechanism from kitchen timer. Because it is too big. (diameter of around 5.5cm or even more).. I have been thinking of mechanism from wind up toys since it is really small.. Is there any way to modify it? Does anybody have experience with this? I have been thinking also of using damper and spring... The other requirement is that it needs to be cheap (which means under 5$), that is why I can not use mechanism from watches. Basically what I would need is the same mechanism you can get in kitchen timer, but it needs to be smaller. Now I do not care with which technique or mechanism we achieve this. It just need to run for 60 minutes and it needs to be mechanical. Can anybody please help me with suggestions on how to make this work?
Thank you everybody in advance!
Best Regards, Luke