Note : All values are average values, and can be updated by further measurement.
| Quad/Triple Fiber | Outer | Inner | 3+2 ply | Center Fiber | 7-ply Wood | 5-ply Wood |
andro / 7-ply wood
| Name | Avg.Wt (g) | Ep | Ec | Ec/Ep | Vp | Vl | Vl/Vp |
| andro Gauzy SL OFF | 90.2 | 1.44 | 1.36 | 0.94 | 1.09 | 1.17 | 1.07 |
| andro Timber7 OFF/S | 84.1 | 1.99 | 2.09 | 1.05 | 1.41 | 1.44 | 1.03 |
| andro Wanokiwami Ren | 85.0 | 1.48 | 1.36 | 0.92 | 1.14 | 1.30 | 1.14 |
Avalox / 7-ply wood
| Name | Avg.Wt (g) | Ep | Ec | Ec/Ep | Vp | Vl | Vl/Vp |
| Avalox BT777 | 91.0 | 1.75 | 1.54 | 0.88 | 1.16 | 1.27 | 1.09 |
| Avalox P700 | 91.8 | 1.71 | 1.48 | 0.87 | 1.13 | 1.13 | 1.00 |
Butterfly / 7-ply wood
| Name | Avg.Wt (g) | Ep | Ec | Ec/Ep | Vp | Vl | Vl/Vp |
| Butterfly Clearfield | 97.0 | 1.9 | 1.67 | 0.88 | 1.19 | 1.28 | 1.08 |
| Butterfly Korbel SK7 | 87.1 | 1.55 | 1.46 | 0.94 | 1.17 | 1.2 | 1.03 |
| Butterfly Primo Powerfeeling | 90.5 | 1.14 | 1.28 | 1.12 | 1.07 | 0.82 | 0.77 |
| Butterfly SK7 (heavy) | 95.2 | 2.17 | 2.01 | 0.93 | 1.3 | 1.2 | 0.92 |
| Butterfly SK7 Classic | 90.6 | 2.05 | 1.86 | 0.91 | 1.27 | 1.3 | 1.02 |
DHS / 7-ply wood
| Name | Avg.Wt (g) | Ep | Ec | Ec/Ep | Vp | Vl | Vl/Vp |
| DHS Fang Bo B (7-ply) | 88.4 | 1.69 | 1.42 | 0.84 | 1.14 | 1.29 | 1.13 |
| DHS Hurricane Long 3 | 86.9 | 1.56 | 1.34 | 0.86 | 1.11 | 1.25 | 1.13 |
Donic / 7-ply wood
| Name | Avg.Wt (g) | Ep | Ec | Ec/Ep | Vp | Vl | Vl/Vp |
| Donic Persson PowerPlay | 83.9 | 1.31 | 1.25 | 0.95 | 1.10 | 1.08 | 0.98 |
| Donic Ovtcharov Senso V1 | 90.0 | 1.91 | 1.58 | 0.83 | 1.20 | 1.36 | 1.13 |
Joola / 7-ply wood
| Name | Avg.Wt (g) | Ep | Ec | Ec/Ep | Vp | Vl | Vl/Vp |
| Joola Falcon Fast+ | 85.6 | 1.82 | 1.47 | 0.81 | 1.17 | 1.36 | 1.17 |
| Joola TPE Nature | 86.2 | 1.79 | 1.71 | 0.96 | 1.25 | 1.14 | 0.91 |
Nittaku / 7-ply wood
| Name | Avg.Wt (g) | Ep | Ec | Ec/Ep | Vp | Vl | Vl/Vp |
| Nittaku Adelie | 80.8 | 1.14 | 1.30 | 1.14 | 1.15 | 1.09 | 0.95 |
| Nittaku Barwell | 83.8 | 1.46 | 1.67 | 1.14 | 1.27 | 1.23 | 0.97 |
| Nittaku Ludeack | 84.0 | 1.39 | 1.36 | 0.98 | 1.15 | 1.16 | 1.01 |
| Nittaku Ludeack Power | 93.3 | 2.18 | 1.46 | 0.67 | 1.12 | 1.08 | 0.96 |
| Nittaku Septear | 80.6 | 1.43 | 1.49 | 1.04 | 1.23 | 1.23 | 1.00 |
Stiga / 7-ply wood
| Name | Avg.Wt (g) | Ep | Ec | Ec/Ep | Vp | Vl | Vl/Vp |
| Stiga Clipper CC | 91.4 | 1.77 | 1.61 | 0.91 | 1.20 | 1.24 | 1.03 |
| Stiga Clipper CR (New 6.5mm) | 81.7 | 1.46 | 1.47 | 1.01 | 1.20 | 1.25 | 1.04 |
| Stiga Clipper CR (Old 7.0mm) | 96.8 | 2.42 | 2.21 | 0.91 | 1.37 | 1.25 | 0.91 |
| Stiga Ebenholz NCT VII | 91.3 | 1.57 | 1.26 | 0.80 | 1.03 | 1.20 | 1.17 |
| Stiga Maplewood NCT VII | 94.6 | 1.88 | 1.33 | 0.71 | 1.07 | 1.27 | 1.19 |
| Stiga Nostalgic VII | 96.9 | 2.20 | 1.54 | 0.70 | 1.12 | 1.32 | 1.18 |
| Stiga Rosewood NCT VII | 93.7 | 1.96 | 1.72 | 0.88 | 1.22 | 1.30 | 1.07 |
Tibhar / 7-ply wood
| Name | Avg.Wt (g) | Ep | Ec | Ec/Ep | Vp | Vl | Vl/Vp |
| Tibhar Bernadette Szöcs Signature 1 | 84.9 | 1.75 | 1.59 | 0.91 | 1.22 | 1.26 | 1.03 |
| Tibhar CCA 7 | 91.6 | 2.04 | 1.94 | 0.95 | 1.29 | 1.25 | 0.97 |
| Tibhar Samsonov Force Pro Black Edition | 86.9 | 1.77 | 1.60 | 0.90 | 1.22 | 1.25 | 1.02 |
| Tibhar Nimbus ALL Tibhar Illusion Killer | 85.5 | 1.34 | 1.56 | 1.16 | 1.24 | 1.00 | 0.81 |
Victas / 7-ply wood
| Name | Avg.Wt (g) | Ep | Ec | Ec/Ep | Vp | Vl | Vl/Vp |
| Victas Swat Power | 89.9 | 1.67 | 1.43 | 0.86 | 1.12 | 1.13 | 1.01 |
| Victas Swat | 87.6 | 1.51 | 1.40 | 0.93 | 1.13 | 1.13 | 1.00 |
Xiom / 7-ply wood
| Name | Avg.Wt (g) | Ep | Ec | Ec/Ep | Vp | Vl | Vl/Vp |
| Xiom Solo | 88.2 | 1.76 | 1.67 | 0.95 | 1.23 | 1.24 | 1.01 |
| Xiom Zeta Offensive | 90.7 | 1.62 | 1.47 | 0.91 | 1.14 | 1.18 | 1.04 |
| Xiom Extreme S | 92.5 | 2.54 | 2.57 | 1.01 | 1.48 | 1.32 | 0.89 |
Yasaka / 7-ply wood
| Name | Avg.Wt (g) | Ep | Ec | Ec/Ep | Vp | Vl | Vl/Vp |
| Yasaka Falck W7 | 85.3 | 1.65 | 1.34 | 0.81 | 1.13 | 1.33 | 1.18 |
| Yasaka Ma Lin Extra Special | 90.3 | 1.84 | 1.43 | 0.78 | 1.12 | 1.30 | 1.16 |
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Is it possible to add information about blade thickness and type (clipper, hardwood, etc.) to this database? That would help a lot to predict characteristics of similar blades that don’t included in the database. For example, I have Sanwei Fextra 7-ply wood blade. It is of clipper type (3 thicker layers in center and 2+2 thinner layers outside). Overall thickness is about 6-6,2 mm and weight about 93-95 grams. It is sealed, so I can not take direct measurements. It would be a lot easier to find similar blades if I have additional information about already measured blades.
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Its construction is somewhat different from that of Clipper. Especially the middle layer is different from the middle layer of Clipper.
I can’t tell you the exact values because there are many factors those affect the performance indices. But, at least we can ‘expect’ the values.
Ep will be around 1.7 or 1.8
Ec will be around 1.5 or 1.6
Vp will be around 1.0~1.1
Vl will be acound 1.2~1.3
(in case the weight is around 94 gram.)
No more than prediction.
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Can you explain (roughly) why the Adelie is so different?
I bought one based on your data and it was a nice variation on the Violin – both similar speeds but one is “kick”’the other “hold”. I can tell the difference easily.
The Adelie is not made anymore so it would be nice to know what to look for in a replacement.
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That is because Ep is significantly reduced by the decrease of the thickness while Ec is reduced not that significantly, in case the basic structure of blade is not changed and only the thickness is changed. That makes Ec/Ep much bigger than that of thicker blade.
You can compare Adelie with new 6.5mm version of Stiga Clipper CR. The Ep of Adelie is much lower than the Ep of Clipper CR, while the difference in Ec isn’t that significant.
The bending stiffness concerned with Ep is significantly affected by thickness, while the center deflection stiffness concerned with Ec isn’t affected by thickness that significantly although it is also affected.
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Thank you for the update.
I have found your test method and results tremendously interesting. Based on your data I bought an Adelie and a Barwell (which from your data will be a big brother to the Adelie). I’ve also got other blades like the Yasaka MLSC which are the performance opposite of the Adelie and Barwell in terms of kick vs hold. It’s nice to confirm what one feels with measurement.
I also have two Violins (all wood) , both have the same head size and weigh the same 86g. They both have Rakza 7 1.8mm on both sides and weigh the same fully assembled. The only physical difference is one is the standard straight grip, the other large straight. The odd thing is they feel and perform totally differently. The one with the standard grip is much slower. It’s slower than a Yasaka Sweden Classic with R7 2mm (that also weighs the same). It’s far slower than the Adelie. It’s obvious when one tries to finish a point with a drive or flat hit. In contrast , the Violin with the large grip is faster than those other bats. It makes the Adelie seem slow.
My question is, when you have multiple samples of test blades , what is the range of values you get? In my case, it could be the manufacturing variation of the rubbers, but if that’s the case it makes a mockery of choosing rubbers by the fraction of a mm difference or few degrees hardness. The blades and rubbers all came from TT11 so one assumes they are all genuine.
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7ply wood for Stiga clipper have various type.
1) Stiga Clipper wood
2) Stiga Clipper CR
3) Stiga Clipper WRB
4) Stiga Clipper CR WRB
5) Stiga Clipper CC
These are 5 different types of clippers, surely their performance could be different. They are build with the same wood type as Butterfly SK7 Classic. How much of difference would they perform?
Would be great if you could collect data for the different types of Clippers and make a report to compare between Butterfly SK7 classic and Stiga Clippers series.
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In fact Clipper WRB isn’t much different from Clipper Wood if the weight difference is around 5 gram.
One problem of Clipper series is that its thickness and average weight changes frequently. 6.0mm version, 7.0mm version and 6.5mm version are all different.
Among the series, thick and heavy piece can be compared wit SK7 Classic, without concerning the name.
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Thank you for the update.
I have found your test method and results tremendously interesting. Based on your data I bought an Adelie and a Barwell (which from your data will be a big brother to the Adelie). I’ve also got other blades like the Yasaka MLSC which are the performance opposite of the Adelie and Barwell in terms of kick vs hold. It’s nice to confirm what one feels with measurement.
I also have two Violins (all wood) , both have the same head size and weigh the same 86g. They both have Rakza 7 1.8mm on both sides and weigh the same fully assembled. The only physical difference is one is the standard straight grip, the other large straight. The odd thing is they feel and perform totally differently. The one with the standard grip is much slower. It’s slower than a Yasaka Sweden Classic with R7 2mm (that also weighs the same). It’s far slower than the Adelie. It’s obvious when one tries to finish a point with a drive or flat hit. In contrast , the Violin with the large grip is faster than those other bats. It makes the Adelie seem slow.
My question is, when you have multiple samples of test blades , what is the range of values you get? In my case, it could be the manufacturing variation of the rubbers, but if that’s the case it makes a mockery of choosing rubbers by the fraction of a mm difference or few degrees hardness. The blades and rubbers all came from TT11 so one assumes they are all genuine.
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Thank you for sharing your experience. The range differs by case. Some blades show quite big deviation, and other blades don’t. That deviation is even bigger than what we can see from rubbers because blades are made of natural woods.
In my experience, the difference in performance isn’t serious if the difference of weight from the average weight is under 2(or 3) gram.
But, the problem of Violin and Acoustic is that there are some pcs. whose internal construction is difference from those of the same model. I have also found the same case from Butterfly Korbel. That was totally different blade from regular Korbel. (I felt that it is close to Allround Classic with higher elasticity.)
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Thank you for your work.I found Joola Falcon Fast+ is a carbon blade,may be it
should be Joola Falcon Fast in the table?
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Thank you for comment.
BTW, where did you find that information? Joola catalog is describing that it is a seven ply wood blade whose construction is as follows:
1/7 : Ebony
2/6 : Spruce
3/5 : White birch
4 : Tung (Kiri)
And, Falcon Fast is also a seven ply wood blade whose top layer is Lymphwood and the other plies are Ayous.
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https://www.yoger.com.cn/product/145050.html
I’m not sure if it’s the same blade. This one seems to have the right weight and speed based on your information. Your website has been really helpful in finding the right blade. Thanks.
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Probably that is the same blade. The black layer looks like carbon fiber layer. But, I remember that it isn’t soft carbon (= carbon fleece) but carbon powder. In Joola catalog, Joola is describing that it isn’t a carbon blade but a 7-ply wood blade. And, the measured data is saying that it isn’t a carbon blade.
But, I’m not sure whether the one on Chinese home page is really same one as the one I measured or not.
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Why nittaku ludeack power is so unique，with such a low Ec/Ep，but Vp is still higher than Vl.
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If we just see the value of Ec itself, it isn’t that low. However, the very high Ep makes the Ec/Ep very low. We can’t know everything inside a blade. Only Nittaku knows it. But, increasing only the primary bending stiffness while keeping the stiffness of center deflection in low level is possible by careful design of blade construction.
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Would you be able to hazard a guess at the values for a Nittaku Goriki blade? With 7 thin plys of a hard wood it sounds quite unique. Yuto Muramatsu is now using Nittaku Goriki Danshi along with a few other famous choppers. From reviews it would sound like it has a very high Ec/Ep, do you think that this is something that should be sought after for a defensive blade in general?
Great page thanks, really useful resource.
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Thank you for comment. It is difficult to predict the values of a blade whose construction is not typical. But, if I guess from the construction, it seems that the Ec/Ep of Goriki Danshi is somewhat high.
High Ec/Ep isn’t needed for a defensive blade in general. However, if the player need to frequently attack, high Ec/Ep can be a good character of the ‘offensive’ defensive blade.
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Appreciate for your work – the information is very useful.
I currently use a 7-ply Butterfly Kong Linghui Euro OFF blade, likely manufactured around 2003, and I am considering switching to an Innerforce or inner-carbon model. My blade has a padauk (red) core and six anigre plies, and it feels quite stiff. Weight is 100gr . https://revspin.net/blade/butterfly-kong-linghui-euro.html
According to TT forums, some players liken its characteristics to older models such as the Stiga Clipper or the Butterfly SK-7 . I have not found any manufacturers information about blades using this particular wood combination, especially those with a padauk core.
I would be grateful if you could provide rough estimates of Ep, Ec, Vp, and Vl for my blade based on your experience (if possible) — this would help me choose my next rackets. Subjectively, I consider the ratio Ec/Ep should be ≥ 1, with Ep approximately 2.
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