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Added 6 V to SP7 as suggested...no joy!!

Help. As suggested in other post regarding the pendulum not swinging far enough, I added a 6V power plug and still have the same issue. The pendulum swing is close but just not far enough. Can anyone suggest a fix for this?



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hoppy
2 days ago

I am sure you know that the magnet must be as close to the coil as possible and I used a rare earth magnet (neodymium) because they are much more powerful than

the iron type. The new magnet would increase the swing. I can't remember if your present magnet must be installed with a polarity or not but it may be worth while to reverse the magnet and give it a try. It also may be that the pendulum may be too heavy not allowing the magnetic pulse to push it far enough. One other thing I noticed is the ratchet wheel is allowed to move backward with the paw. This would also require more swing from the pendulum .

Edited

Just built electromagnetic clock. Can't get the ratchet to work right.

I have tied several pawls and clips trying to get this clock to ratchet correctly. I got it to the point where the pendulum swings twice before advancing the ratchet gear. It seems that the pendulum is not swinging far enough. What is happening is when I put the pawl and clip at the top most hole the pendulum swing a wide arc. As I move the pawl and clip down the pendulum arc becomes less and less resulting in the same pendulum swinging twice before advancing the gear. I don't understand why the pendulum arc is less the further down the holes I go. Doesn't make sense to me.

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SP7 pendulum assembly

I have ordered 3 separate pendulum movements from Aliexpress. They all show pictures that jibe with the instructions, but when they arrive, they have surface mount components instead of the large size caps and resistors shown in the instructions. The problem I am having is that they don't seem to have enough oomph to swing the pendulum far enough to engage the ratchet wheel. It swings, just not far enough. The bearings and mechanical portion of the clock seems to run well. Does anyone know a workaround or where I can find the appropriate pendulum driver? Any suggestions welcome. Thanks

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brauscher
5 days ago

I am having the same issue

Stu Harrison
Stu Harrison

Is the smaller crazy gear clock just a scaled Sp10?

I would like to build the crazy gear clock but I really like the mini version as opposed to the medium or large one. Can I buy the SP10 plans and just scale them down? If so, what scale would you recommened to replicate the one you show in your videos? Thanks!


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Steve
Steve
Dec 23, 2024

New posts for new topics are a great idea. Enjoy your family visit.

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