Dunlop Biomimetic 200 Lite stiffness (RA)

WILSONKGUT

New User
Anyone has measured the Dunlop Biomimetic 200 Lite stiffness (RA) using the RDC machine ?

TW gave two very different readings, one at 57 on the spec page and another at 65 on the TW university vibration page.
 

andrewski

Semi-Pro
It definitely doesn't feel like RA 57. I would have put it somewhere around 63.

I play with the stick and I agree that MINE one feels like 62-63 when strung with multi (Tech X-one) at 55lb, based on the feel and specs of other rackets I have or tested.
I said mine, because when I asked question on TW forum in the past about rackets tolerances, I was shocked how much racket's specs could differ from published specs.

I think TW averages measurements over many rackets, so their figures are better than most (typos excluded)
 

andrewski

Semi-Pro
I found this re racket stiffness from TW on another site:

Tennis Warehouse says:

March 29, 2012 at 11:18 am


Please rest assured that our RDC Machine (“racquet bending machine”) is accurate as are our specs. I want to clarify the specs on our website. What we post (weight, swingweight, flex, balance) are all STRUNG specs. The specs that manufacturer’s list on their racquets and what most websites post are for UNSTRUNG specs. When a racquet is strung, the stiffness (RA) drops 4-6 points, the weight goes up about .6 ounces, swingweight goes up and the racquet becomes more head heavy.

You’ll never hit a tennis racquet without strings, so why have the unstrung specs? That’s how we approach it.

Again, please rest assured that our specs and our machine are accurate. If you have any other questions or concerns, please email us.

Thank you,

Jason, TW
 

WILSONKGUT

New User
The RA reading of 57 on TW spec page of 57 and the RA readings of 65 on TW university racquet vibration page are both based on strung racquet.

So the question is why are there 2 'strung' readings with such a big difference ?

I believe the 57 reading is cause by the Silk string being strung on main and cross for those demo racquets that were being used as samples for the measurement. Silk has a very low stiffness almost same as babolat xcel.

The 65 reading is based on a standard string bed with poly string used for comparing vibration frequency of different racquets.

I hope someone with RDC machine at your stringer shop can do a test with poly string strung.
 

TimothyO

Hall of Fame
The RA reading of 57 on TW spec page of 57 and the RA readings of 65 on TW university racquet vibration page are both based on strung racquet.

So the question is why are there 2 'strung' readings with such a big difference ?

I believe the 57 reading is cause by the Silk string being strung on main and cross for those demo racquets that were being used as samples for the measurement. Silk has a very low stiffness almost same as babolat xcel.

The 65 reading is based on a standard string bed with poly string used for comparing vibration frequency of different racquets.

I hope someone with RDC machine at your stringer shop can do a test with poly string strung.

TW makes plenty of mistakes. For example, they listed the SW for the Pure Storm GT at 327. We own 5 of them and none was higher than 320 in stock form (strung) and all other sites as well as TWU show 317 to 319 which is consistent with our measurements.
 

WILSONKGUT

New User
i have just got a reply from TW saying that :

'With the racquet spec page, we take the specs of 3-10 strung racquets and post the average. The vibration frequency data is created by our TW Professor who measures the one racquet he is testing with. Therefor, there can be a difference in the measurements.'

Brittany, TW

Hope that helps
 

Classic-TXP-IG MID

Hall of Fame
So was it more like 63-64 in the end or 57? Thanks.

I strung mine with Solinco Revolution 16L gauge at 50M/ 48C (the racquet is modified with weight in the head and handle), and it felt very plush and comfortable. I don't have an RDC machine, but it had very nice dwell time and felt softer than my IG Prestige MP, my Tecnifibre TFight 315 Limited 18M (2013), and even my Aerogel 4D 200 Tour (which was strung with Babolat Pro Hurricane Tour - a string of similar stiffness). The 200 Tour is supposed to have an RA of 60. I have a Tecnifibre TFight 315 Limited 16M (2013), which is supposed to have an RA of 59, and they feel similar. The Dunlop, IMO, has better control and a less erratic string bed though (by a smidge).

Hope this helps, even though I don't have an actual RDC reading. I love the racquet and it is a regular in my tennis bag.
 
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Just bought and played with Bio 200 (awaiting couple of 200 Lite from Milan, Italy) – and I fully agree that at least 200 version (hope it is the same with 200 Lite) it is much more comfortable stick then IG Prestige MP, Tec315 Ltd. or AeroGel 4D 200 – as I have them all as well.

Bio200_TT_1.jpg
 

Classic-TXP-IG MID

Hall of Fame
Just bought and played with Bio 200 (awaiting couple of 200 Lite from Milan, Italy) – and I fully agree that at least 200 version (hope it is the same with 200 Lite) it is much more comfortable stick then IG Prestige MP, Tec315 Ltd. or AeroGel 4D 200 – as I have them all as well.

Bio200_TT_1.jpg

Good to hear... I think the RA is lower than the IG Prestige MP, so it would make sense. The TW reviews stated that it felt like it was foam-filled (although it's not). Haven't tried the Bio 200, but the Bio 200 Lite feels absolutely amazing.

Not sure if I asked you how you find the Aerogel 4D 300 Tour, and whether you've tried the Bio 300 Tour in comparison?
 
Not sure if I asked you how you find the Aerogel 4D 300 Tour, and whether you've tried the Bio 300 Tour in comparison?

Bought too many Dunlops at the same time so I need some time to test them enough. I know that Aerogel 4AD gathered some good feedback – which wasn't so obvious with Biomimetic line and Biofibre Classic. But from I can tell – played only one hour against the wall with both 300 Tours – as with 200 line – prefer Bio line.
It is a shame that after two good linces (Aerogel 4D, Bio) – Dunlop ended up in pieces as company.

I have an access to RDC machine, I will check specs both of Bio 200 Lite as well as F100/M200 Classic on my own soon.
 
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