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Serve brushing technique

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Topic: Serve brushing technique
Posted By: oldcpen
Subject: Serve brushing technique
Date Posted: 01/23/2021 at 2:30pm
Serve brushing technique in these videos:

1:18 https://www.youtube.com/watch?v=Tu9daYGZ2aY&ab_channel=%E6%96%AF%E5%B8%9D%E5%8D%A1V%E4%B9%92%E4%B9%93" rel="nofollow - https://www.youtube.com/watch?v=Tu9daYGZ2aY&ab_channel=%E6%96%AF%E5%B8%9D%E5%8D%A1V%E4%B9%92%E4%B9%93
2:26 https://www.youtube.com/watch?v=NNQvMDegxoQ&ab_channel=%E3%80%90%E5%8D%93%E7%90%83%E5%8B%95%E7%94%BB%E3%80%91WRM-TV%5BTableTennis%5D" rel="nofollow - https://www.youtube.com/watch?v=NNQvMDegxoQ&ab_channel=%E3%80%90%E5%8D%93%E7%90%83%E5%8B%95%E7%94%BB%E3%80%91WRM-TV%5BTableTennis%5D
0:08 https://www.youtube.com/watch?v=2L5D1w0292g&ab_channel=%E5%85%A8%E7%BB%8F%E5%85%B8%E4%B9%92%E4%B9%93" rel="nofollow - https://www.youtube.com/watch?v=2L5D1w0292g&ab_channel=%E5%85%A8%E7%BB%8F%E5%85%B8%E4%B9%92%E4%B9%93
0:24 https://www.youtube.com/watch?v=7r83KblOV0s&ab_channel=puntoSpicos" rel="nofollow - https://www.youtube.com/watch?v=7r83KblOV0s&ab_channel=puntoSpicos

The paddle moves forward and abruptly stop (even retracts) at the point of contact,
what is the physics behind the technique ?




Replies:
Posted By: stiltt
Date Posted: 01/23/2021 at 4:48pm
When we want very thin contact in the regular pendulum serve, we may have a very loose 3 fingers grip and after contact the violent swing makes the handle bump into the wrist and bounce back but the ball is already gone at this point. We can maybe say if the blade retracts it means the swing was very strong but it's not a primary factor, just a side effect.
Of course tight grips can achieve thin contact too and then the blade won't retract but it's harder in my case. Anyway the abrupt stop -and-retract comes from the handle hitting the wrist at the end of the swing. 
Another even simpler reason - probably the main one - is the wrist folded as much as it could and at the end of the swing, it does not have anywhere to go but to come back with a quick spring effect, giving the impression that the bounce back is an active part of the serve when it's just a side effect after the ball has already left the paddle.


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Posted By: Lightspin
Date Posted: 01/23/2021 at 11:54pm
The idea is that if you stop abruptly, your wrist will fly forward at an increased velocity like a whip.  This type of serve is not easy to pull off, especially when you are nervous.  If your timing is off, weird things can happen very easily. 


Posted By: oldcpen
Date Posted: 01/24/2021 at 1:26am
> your wrist will fly forward at an increased velocity like a whip
Agree !
The paddle too !
For this brushing technique to be effective, wrist must be relaxed,
hold the paddle like holding a bird: not too tight, not too loose.


Posted By: blahness
Date Posted: 01/24/2021 at 6:18am
I actually disagree with the violent wrist whip, it can be used for some critical points, but if you do it all the time you tire out your forearm muscles which will affect everything negatively.

For most of my serves I try to just use more of the body and weight transfer for the power, and then just relax the arm and followthrough naturally. It's about 90% as spinny as the wrist whip version but much more sustainable 


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Hurricane Long 5

FH: Dignics 09c
BH: Tenergy 05


Posted By: stiltt
Date Posted: 01/24/2021 at 12:42pm
I didn't write the violent wrist whip is necessary, I just meant when the blade retracts, the wrist whip was very strong.

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