As a follow up to this post, currently with my hasbro only selection of beyblades (not my choice, just hard for me to get TT/Overseas products)
I've been testing around with combinations of the Slingshock Drivers on the Pro Series Layers, and here are my results.
**Performance Results**
Zeta(S) - Not worth using, Too light of a part, and despite having a decent spring, the three tips on the driver are all outclassed by my Pro Series Drivers.
Tower(S) - This was surprising to me, I like the Slingshock Tower Performance Tip a lot using the Slingshock mode for the (surprisingly wide) Hole Flat tip, The main mode with the semi flat is outclassed by my PS parts much like Zeta(S). Due to the wide hole flat and low friction, this performance tip makes for an excellent Tornado Stalling tip in my experience, and once in a blue moon has enough attack capabilities to knock out even the heaviest combo I put it against. As this is not a Dash' Driver, Bursting is still an issue however, though it appears to hold up against other non dash drivers.
**Durability Results**
Zeta and Tower share the same quality of durability, I had concerns that they would cause increased wear on the teeth, or the teeth of the Pro Series layers would some how damage the spring. So far neither has been the case, I would say that the teeth on my chips are more fresh than if I had been using Pro Series Drivers with them. I tried to put PS drivers on the sloped layers and it DID NOT WORK, I felt the need to force the part on, used a driver I knew I wouldn't mind risking and when I did I noticed significant warping in the plastic of the Crystal Dranzer layer I used, which thankfully unwarped with no lasting damage as the driver was taken off. I wouldn't recommend this. PS Weights do seems to do fine on the Sling Shock system though. (Driger Convert-P go brrrrr)
**Overall Take**
The parts do fit together pretty well, I personally don't see damage, the main issue I was looking at for these drivers, that's a plus. I cannot be sure across the board if this is the case, but I recently bought the QD Ragnaruk for the String Launcher (Good investment if you're states locked like me), So I will be testing it and posting once more when I do, after initial tries with it, I think it works too. In terms of durability, my Pro Series drivers do more damage to my chips than the Slingshock ones. Performance Wise, it's a toss up, They're probably semi-competitive in a GT format, however outside of that I would skip them for competitive play, performance aside I don't think the combos are allowed anyway. If you're looking to have fun with friends or yourself with a new set of variations of play I'd say go for it. It's all about fun and sometimes having goofy parts and combos is the best way to increase that level of fun.
**TL;DR**
Do the parts fit - Yes
Have mine worn down significantly - No
Do they perform as well as PS Drivers? - Sometimes
Worth investing in Regular Hasbro if you already have PS - No if short on cash, Yes if money is no issue
Is it fun? Absolutely
Retsu Let's it Rip.