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-   -   Same specs, different feel?? (http://tt.tennis-warehouse.com/showthread.php?t=452592)

Cyclone 01-26-2013 10:56 AM

Same specs, different feel??
 
Hi all, I recently bought two Dunlop Biomimetic 200+'s and have been losing sleep ever since. They were both spec-matched and everything, but when I play with them they feel entirely different; swing speed, the response upon contact, the pocketing, the flex, the touch, all quite different. Even just swinging them (or having teammates swing them) elicits a "wow, yeah, these feel way different." I was thoroughly convinced that the specs HAD to be off, but I had both rackets measured on a Babolat machine by a guy who strings for the pros, and apparently the specs are matched.

It's really frustrating because I'm pretty sensitive to my equipment (I wish I wasn't, believe me...) and it plays havoc with my confidence in being able to continue a match if I break my strings on one. Does anyone have any experience with this?

Thanks!

TimothyO 01-26-2013 11:29 AM

Had the exact same experience with two Speed 300s. Matched perfectly for weight, balance, and swingweight. Checked by an MRT on an RDC. Perfect.

And they felt completely different. One felt softer and less powerful. The other, while still soft compared to other frames, was noticibly different to the point that using the same stroke with both frames prodcued shots of very different depth.

One problem in that case was that the frames started out VERY different in weight and balance and SW. They took a fair amount of customization to get them matched.

When I bought my three PSGTs on Black Thursday I bought them blind from TW as they were so darn cheap and I knew TW was swamped with orders so figured the matching service wasn't worth it (it's barely worth it when they're not swamped).

I got lucky and they came in stock within a few grams and factions of a point different in balance. Getting them matched was easy and they feel the same. Can't tell them apart when the strings have had the same level of use.

Lesson: weight, balance, and SW are not the whole story. How mass is distributed and it's form (eg graphite vs lead tape) also influence how frames feel even if the values are the same on paper. Always buy frames so they start out close together and require minimal customization.

And as another TT member recommended, you can go as far as seeking frames with similar swrial numbers to ensure the same production run.

There's a video on YouTube which shows how frames are made. After watching it it's no wonder that two frames nominally of the same model can feel completely different. Far more artisan skill and handwork than I ever imagined!

taurussable 01-26-2013 11:33 AM

10 grams lead is different feel from 10 grams graphite. same specs doesn't mean much.

Cyclone 01-26-2013 12:35 PM

Quote:

Originally Posted by TimothyO (Post 7167731)
Had the exact same experience with two Speed 300s. Matched perfectly for weight, balance, and swingweight. Checked by an MRT on an RDC. Perfect.

And they felt completely different. One felt softer and less powerful. The other, while still soft compared to other frames, was noticibly different to the point that using the same stroke with both frames prodcued shots of very different depth.

One problem in that case was that the frames started out VERY different in weight and balance and SW. They took a fair amount of customization to get them matched.

When I bought my three PSGTs on Black Thursday I bought them blind from TW as they were so darn cheap and I knew TW was swamped with orders so figured the matching service wasn't worth it (it's barely worth it when they're not swamped).

I got lucky and they came in stock within a few grams and factions of a point different in balance. Getting them matched was easy and they feel the same. Can't tell them apart when the strings have had the same level of use.

Lesson: weight, balance, and SW are not the whole story. How mass is distributed and it's form (eg graphite vs lead tape) also influence how frames feel even if the values are the same on paper. Always buy frames so they start out close together and require minimal customization.

And as another TT member recommended, you can go as far as seeking frames with similar swrial numbers to ensure the same production run.

There's a video on YouTube which shows how frames are made. After watching it it's no wonder that two frames nominally of the same model can feel completely different. Far more artisan skill and handwork than I ever imagined!

Thank God, I'm not crazy! Thanks for your post. Hmmm I see, that does make sense. It's strange because these rackets weren't even customized at all. Requesting similar serial numbers seems like a great idea, I'll be sure to do that in the future. I'm not sure what to do now though... either frame would be okay, but as a pair they're not compatible...

Cyclone 01-31-2013 01:05 PM

Any advice for how to proceed?

LeeD 01-31-2013 02:11 PM

Side by side comparisons, hitting with a peer.
Mark the rackets, start with groundies and feel what you like and dislike, then switch rackets.
Do volleys, serves, slices, and topspins.
If you bother to write down your impressions, you will soon see a pattern of late or easy shots, power or spin, and the subtle diffences.
That's a start.


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