Wooden Bow Clock

[psychodelicdragon]

is it possible to get plans for this?

it is geourgous!!

[Luke00126]

how can i build this clock?

[jrbeall33]

@Luke00126 Sorry, I have no plans.

[sofiadragon1979]

I would love to see the plans for this.

[odmcarp]

wow, i'm very impressed. that's a nice project. very good job.

[yindsoft]

this reminded me to that thing that E.T. had built in the movie.

[jairokg]

- .... .- - ...  -.-. --- --- .-..

[c9ari]

Remake this video in HD. I want to see this thing real clear!

[jrbeall33]

Sorry, I don't have the facilities

[v5dan]

I have built a wooden clock from plans and i know its not easy! Very beautiful work!

[skinnerprincipal]

I just visited Mr. Bealls website, and all I can say is wow. Just wow. Amazing. Precise. Beautiful. I'm in envy at this moment. Your designs are perfection. I wish you offered plans, but it's tempered by the knowledge that very few of us could probably (or accurately) reproduce your work. Thanks for showing your designs Mr. Beall.

[jrbeall33]

Thanks for the extravagant praise. The skill just evolves from doing stuff. There was a time when I could barely make a board.

[joeyjoet]

Hey were can I  Get one of those???

[jrbeall33]

I guess you will have to make it.

[clockguy2]

Very interesting digression from a wagon spring clock. Good job on the Fusees and the Grasshopper escapement!

[clockguy2]

Very interesting digression from a wagon spring clock. Good job on the Fusees and the Grasshopper escapement!

[benzod32]

So why did you use the Grasshopper Escapement? Dosnt it take more power to run then a normal escapement?

[jrbeall33]

No, it takes less power than other escapements because it has about zero friction on the escape pallets. The bows are not very stiff and provide comparatively little force.

[Gunstick]

my study of the grasshoper is rather that it works by using huge friction on the escape wheel. the more friction (so that the levers engage well the wheel) the better it works. That's my findings by doing a simulation of which I recently posted a video.

[jrbeall33]

It is true, that there needs to be sufficient preasure to prevent the pallets from slipping off the escape wheel teeth. The idea is that they do not slip at all but lift off the teeth at the recoil and therefore produce no frictional wear. I have wooden grasshopper which has been running for 20 years and shows now wear on either the wheel or pallets.

[Audinos]

How do you re-"wind" it? Is it cocked like a crossbow?

[jrbeall33]

It is wound by turning a fusee spiral which winds the cord and pulls the two bows in. As the bows attempt to straighten, they pull on the cord and power the clock. The fusee alters the ratio as it runs down, increasing the ratio as the the bows pull grows weaker,

[jrbeall33]

Yes, I do all my own designs. Thanks.

[adrianiredale]

Fascinating design. I haven't seen anything like this before - in respect to the motive power of the clock. I notice it uses a grasshopper escapement. These are nice - quiet.

Did you design this yourself? All but one of my clocks are designed by Clayton Boyer.

Adrian.