I wanna pull start #2 soooo bad!
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I voted #2 - That yo-yo looks great @smileypants707, you have estimated specs?
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| Specs | Cobra Lilly v2.1 |
|---|---|
| Material: | Al 7075 |
| Weight: | 66.2 g |
| Diameter: | 55.4 mm |
| Width: | 42.8 mm |
| Gap: | 4.39 mm |
| Ixx | 15,880 |
| COM | 66.3 |
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ooh nice, I call dibs if you ever make a run! 
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Any more voters?
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#two
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1st one looks cooler imo, but if the purpose of the 2nd one is fingerspins, then maybe choose that one (Ive never done fingerspins, so a design that favors them is of tertiary importance imo).
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It’s not a dimple, it’s a spike. Which can be pull start finger spun 
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It’s a super-duper looking yoyo you’ve designed here @smileypants707!
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This is a fun topic to read.
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Man, Havent been here in a lil bit.
anyways
sneak peek
width : 43.5 g
mass : tbd
diameter : 57 mm
not final of course. just fun looking design
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any recommended free cad programs?
is https://www.freecadweb.org/ good?
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I’ll give freecadweb a shot to see if it’ll work, I’m sure it has enough tools to design a yoyo, they honestly aren’t that complicated.
I personally use Fusion 360:
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Get the startup license for Fusion 360 like @MarkD said.
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Onshape is awesome. quite different from other CAD software in terms of methods, but its got the same capabilities as the really expensive ones, maybe even better. It’s free as long as you keep all of your projects public, so anyone can find something if they are looking. I personally use this because I’m not rich, not an engineering student, or care about people “stealing” my designs.
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Hi!
I’m relatively new to Fusion 360, I decided to use it to make a yoyo for my final project in my high school drafting and design course. If anyone has any helpful tips on the matter, I’d really appreciate it!
Thanks!
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I looked through the thread and saw some neat renders and stuff, how’d you put response and a bearing in the design? And how did you calculate the weight?
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You can add them to the sketch the same way you draw the yoyo quarter profile:
The blue-highlighted sections are the pad and 1/2 of a center-trac bearing.
To calculate the weight, use the Revolve tool to create a 3d body of the yoyo half. Then select the Material Properties of that body. Apply the material you plan on using (plastic, aluminum, etc).
Next, select the Properties of that body and it will show you the estimated mass.
Multiply this by 2 (for two halves!) then add 2.5-3g for the bearing, axle, and pads.
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Thanks 
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