i was wondering how much different a 4a yoyo would be, specifically the bearing seat. i know the yoyo i have atm (sky dancer) uses a nut and a bolt for the bearing and axel and embeds the response pads in the body as usual, but what about other throws?
Also is there a template like there is a for a 1a throw if they are different
I believe all plastic yo-yos have a metal insert for the axle and inner part of the bearing seat. The response pad area does not need to be as precise so they are not made of metal. I think it depends on the designer whether they want to use a nut and bolt though.
The nut and bolt construction is probably only used on the cheaper injection molded 4a yoyos. Some older yoyofactory models for 1a like replay and protostar use it as well. The more expensive machined 4a yoyos use pretty much the same construction as 1a plastics, except with longer axle and thicker plastic around the center hub for more reinforcement.
1 Like
ah that makes sense, my only comparison point is the YYF sky dancer. this also means i can use the same template right?
This one looks nice, though at this point I wonder if doing press fit rims from the outside (with an overhang) would make more sense design-wise. I think they end up being easier to assemble, and no less durable.
1 Like
Decided to experiment with a design that isn’t round.
Specs:
Width: 48mm
Height(Side to Side): 51mm
Height(Corner to Corner): 63.84mm
Half Weight: 31.09gms
Assembled Weight: 65.08gms
MMOI: 16471
Body Material: 7075 Aluminum
Bearing: Size C
Axle: M4 x 8mm x 0.7mm
Thoughts anyone?
Sidenote: Please ignore the 4 black dots at the bottom of the cross sectional view. There aren’t any holes in the yoyo.
4 Likes
this is probably one of your “bist” designs
2 Likes
What do you mean by saying “Bist”?
theres a yoyo manufacturer named bist who has some pretty wild designs with lots of cutouts and strange geometry. one of his more down to earth designs is the tondo
4 Likes
Similar but still pretty different
1 Like
ur right. maybe the hattori boost is a better comparison
1 Like
Anyone have a gut measurement cheat sheet for size C and D bearing?
What do you mean by cheat sheet? A list of all the proper dimensions?
1 Like
It would be helpful. I’m day one in CAD
I can screen shot the dimensions of a yoyo and you can use them, however it would be more beneficial if you learned why the dimensions are the way they are so, in the future if you want to design for something different you know what you need to do to get the correct dimensions.
This video covers that great:
If you still want a screen shot however, just PM me like you did before.
4 Likes
Specs:
Width: 48mm
Height(Side to Side): 51mm
Height(Corner to Corner): 63.841mm
Half Weight: 31.12 gms
Assembled Weight: 65.178gms
MMOI: 18194
Body Material: 7075 Aluminum
Rim Material: 303 Stainless Steel
Axle: M4 x 8mm x 0.7mm
Bearing: Size C
Response: “Standard” 19mm
Thoughts anybody?
5 Likes
It looks like a yo-yo I’d like to watch other people play.
4 Likes
What does that mean?
It means I don’t think it would be fun to throw (or catch) so I definitely wouldn’t buy one.
It would be fun watching others play with an awkward throw, however.
1 Like