From One Drop:
“The Rev 2 brings out the first set of tweaks to the Rev as we explore how small changes to a design affect the look and the play.
The first change is to the transition in the catch zone. In the cross-section art on the box the white line is the Rev 2 and the black line is the Rev 1. You can see we added material there which has the effect of making the transition more severe and sharp. Changes to the catch zone (or sometimes called the “profile”) have the biggest impact on how a yo-yo looks. And you can see this change makes the yo-yo appear much less organic and rounded and much of a wing shape.
The second change is to the cup side. On the cup side the changes are less visible to the eye, but end up having impact on weight and weight distribution. In fact, when designing and tweaking yo-yos we commonly use this area to control the final weight. You can see in the cross section we removed some of the cup and the result is almost two grams of weight loss compared to the Rev 1. This change will have the most impact on how the yo-yo feels in play. Side note: we forgot to update the weight on the box art so it shows the Rev 1 weight (65.8 grams), instead of the Rev 1 weight (64.1 grams). Oops 🙂
We still used 7075 aluminum alloy and the other specs remain the same. On future Revs we might look into using a different alloy or changing the specs to a much bigger degree. We received a ton of excellent suggestions from Rev 1 owners and are excited to continue this project into the future and encourage you to submit your feedback after trying the Rev 2.”