Another one…
Diameter 52 mm
Width 44 mm
68 grams
15 Likes
These inserts were supposed to be temporary, i was going to make ones that are closed off and concave at the end.
It already spins for ages on your finger as is.
Really happy with this one.
6 Likes
Chunky good looking boi.
Chunky shall be it’s name hence forth! 
Getting there, inserts need more work though, had to make that wall thinner and lost depth in the fingerspin thingy.
8 Likes
This one is completed, inserts are finally perfect. The red plastic I used is POM-H, it’s a bit softer to the touch but slightly heavier than the white POM-C.
End result:
52mm diameter
44mm wide
66 grams
Cheers,
J
13 Likes
you didn’t need any knurling on the hub inserts?
These look great, btw - very similar to hub/spacer systems I’ve had made for production yoyos.
Here’s a photo showing the knurling. It helps keep the hub from slipping when tightening the yoyo.
7 Likes
I’m a fan of the knurling, but One Drop’s kit doesn’t use any knurling either. If the parts fit together well enough the knurling isn’t necessary.
3 Likes
I’ve been using this setup for over 15 years, I’ve knurled some in the past but as I tend to machine these on a manual lathe omitting it ends up saving quite some time. Also the knurling seems a bit redundant if you turn both diameters with a diameter that’s about 0.05 mm too large. If done right the halves shouldn’t slip when tightening down, and even if they do it shouldn’t affect play in any way.
It’s probably better to have the knurling on production runs I can imagine. Does the knurling wear down on the plastic over time?
Love your stuff!
Greets,
J
2 Likes
Oh yeah, I use stainless steel for the spacers. The inner bearing ring doesn’t wear down the seat and the spacers can be thinner as well. These are 1.3 mm thick with the raised part being 0.3mm.
About 0.3 - 0,4 grams heavier a piece but there’s bound to be downsides
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I see, much longer than I’ve even been designing yoyos!
It doesn’t seem to unless I’m removing the hubs frequently, which is an unusual thing to do.
1 Like
good to know, one of the reasons i don’t use it is this.