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can anyone confirm this? Or are you going on the basis that it's a German made rubber?

Desto F1-S is marked Formula Donic. Why wouldn't it be a tensor?

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Chasse Patate

I've used all of them. Formula donic is donic's own marketing term of course, so they're free to apply it to any rubber they want to. F1-s was pretty similar to f1 but without the pretensioned topsheet.

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Equipment: Matsushita PowerDefence, Spin Art 1.9 black, Xiying 979 ox red
Style: American | US Rating: barely 2000

I thought F1-S was the speedgluable version of F1, like Xtend SG is the speedglueable version of Xtend.

Doesn't mean it's not a Tensor. Revo COR rubbers were tensors and they were meant to be glued.

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Chasse Patate

All tensors are speedgluable; i've known players who speedglued f1 and f3. How do you define a tensor, in contrast to a non-tensor esn rubber? I think we'd agree that tibhar rapid and killerspin nitrx are esn-made but not tensors. F1-s is pretty much the same as those rubbers. I've never used revolution cor rubbers.

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Equipment: Matsushita PowerDefence, Spin Art 1.9 black, Xiying 979 ox red
Style: American | US Rating: barely 2000

Then why didn't Donic label Coppa JO as a formula donic? It's also clearly an ESN made rubber, but it was promoted for speedgluing.

There were some other older Desto rubbers also not labelled as Formula Donic.

The difference between someone gluing F1/F3 and F1-S, Xtend SG, etc is the latter were meant to be glued. Sure you can speedglue F1. You can also glue up long pimples if you're that way inclined. But they weren't MEANT to be glued. They bubbled and split far easier than the latter variety.

It's like the difference between the Andro Quad and COR series. The COR series was meant to be glued. The Quad wasn't, but there wasn't anything stopping you from gluing it.

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Chasse Patate

I agree, the ones that ESN defines as tensors have a lot of tension inbuilt already, making it unsuitable for gluing... risk is too high...

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As i said, formula donic is donic's marketing term, not mine. They can use it in whatever way thinks will sell them the most rubber. Sometimes i like trying to figure out companies' marketing intentions, but my guesses are probably wrong the majority of the time. Since this is your list, you're the one who needs to decide how you want to define tensor. If you define all "formula donic" as tensor, then by that definition f1-s is a tensor.

Personally i think you should consider physical properties in addition to marketing labels, and physically killerspin fury is a german rubber that behaves pretty much the same as rubbers marked "tensor" so in my mind it's a tensor even if it doesn't have the label. F1-s doesn't have a pretensioned topsheet and does not behave the same as rubbers with the "tensor" label. I would suspect that esn would not classify at as a tensor, but i don't think i've read a technical description of their definition of tensor either.

Also, when f1 first came out, its description said something like "can be speed glued for even more effect". I don't know why that should matter either way; i imagine they would encourage speed gluing every rubber so they could sell more glue, except for the softest stuff like f3 to avoid complaints about torn sponge. I guess they stopped recommending glue with f1 because of complaints about delamination.

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Equipment: Matsushita PowerDefence, Spin Art 1.9 black, Xiying 979 ox red
Style: American | US Rating: barely 2000

Silver..

still curious about one thing...

how do you see 4G and 4.5G differ? because andro just differentiates between tensor bios and tensor 3G .. just trying to understand.

try a sheet of andro plasma, coppa jo gold/silver and compare it to roxon, platin

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Chasse Patate

Note that donic piranja and baxster f1-a are also labeled "formula donic". Does that make them tensors? I dunno, maybe. Can't quite wrap my head around the idea of a tensor in 0X though.

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Equipment: Matsushita PowerDefence, Spin Art 1.9 black, Xiying 979 ox red
Style: American | US Rating: barely 2000

yes.

Why can't a tensor be OX?

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Chasse Patate

I thought sponge was necessary but not sufficient for a rubber to be tensor!

This thread is confusing to me because we have:

lots of sufficient conditions for a rubber to be tensor (Has tensor bios logo etc)

lots of necessary conditions for a rubber to be tensor (ie Must be made by ESn)

but none that is both necessary & sufficient & verifiable.

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speedglue is pants

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silver

just a off the way question [and i don't want to hijack your thread on this...]

did you try Andro impulse speed. i am considering it for my back hand... would it be too fragile like the plasmas or little better like the roxons?

and how is it for opening loops over the table?

thx in advance... you are my hero on tensors

yes

I know one guy at my club who swears by it. It's soft, reasonably fast and not very spinny.

I think it's crap

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Chasse Patate

but isn't soft spinny on slow loops?

do you mean not spinny on hard loops?

okay.. what about joola energy extra in spin comparison?

lastly what you think is spinniest tensor for slow on the table opening loops?