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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!

18 comments

18 Comments

Stu Harrison

5天前

The frames were converted to solids (using fusion)--just since it was easier to manipulate them this way. The gears were made using a free fusion add in--called spur gear. I fine tuned the add in parameters so the gears matched the size and shape of the crazy gear then tinkered with them for the interior bracing, inner gears, thicknesses etc. Once the gear is generated, it is very easy to work with. I can send the files to Steve if he wants them and he can include them--but they are not drop in compatible with the rest of the model...

And I agree about the hands--but truthfully i like the gears moving more than its actual use as a clock :)

Steve

5天前

Replying to

Great job on the conversion. It seems like you did a complete re-draw of the design at the new scale.

I start all my gear profiles using Gearotic. It seemed like the most capable gear generator when I started. Fusion 360 didn't even exist yet. Gearotic outputs DXF files with lots of tiny line segments. I approximate this using 3-4 arcs per tooth, mirror the other side of the tooth, then array it to create the full gear. TurboCAD handles the arcs a lot faster than hundreds of tiny line segments.

It sounds like you did approximately the same number of steps to create your gears. There are a lot of completed gears in this clock, but only around 5-6 starting gear profiles.

Steve