Valentine Butterfly Prototype
Further development of the Butterfly for Valentine model, I've opted
Further development of the Butterfly for Valentine model, I've opted
Okay, so I've established that I can use a linkages
Further developments in the pendulum power model. I've gone back
I've completed the double crank mechanism and done the photography
I've been making changes to the design of the double
I've been working on an experimental mechanism that I hope