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04-19-2014, 06:04 PM #1
machine difference - ES5Pro vs. Alpha Ghost
yesterday i had the pleasure of using AK's ES5Pro and Alpha Ghost.
i took the opportunity to string two Revelations with the same string (Gosen R4X 110) and tension (24/24) and compared the resulting string job.
i tried to do the same procedure the same. same pattern, same tension (24/24).
the result was a little interesting.
i did the ES5Pro first, i only managed to get the ping frequency of that 30min after. it was 1171Hz. the freshly strung from the Ghost was 1161Hz. immediately there is a slight difference (although AK claims that both machines are calibrated equal using his digital fish scale)
so it appears that there is slightly more tension loss from the get go for the Ghost.
and not only that, we have AK and another very experienced (10+/day) stringer present and both feel (and me) that the ping tail (resonance) of the racket coming from the ES5Pro sounds better, and the one from the Ghost sounds more dead.
18 hours later, the frequency of the one from ES5Pro was 1152Hz, and the ghost one was 1131Hz.
so probably a 30Hz drop from fresh, and un-used. that's around 1lb, which is reasonable.
today the ES5Pro is probably less lively than before though. so maybe the liveliness is from the completely fresh string?
04-19-2014, 06:34 PM #2
Were the observers 'blinded '?
04-19-2014, 06:39 PM #3
04-19-2014, 08:45 PM #4
04-19-2014, 08:47 PM #5
So they are fairly equal.
What I didn't do was to measure the main string compression. However, the es5pro one came out around 4mm shorter.
04-19-2014, 09:02 PM #6
The possible variables are:
- clamp and clamp base quality. I can see more give/setback on the Ghost.
- table stiffness. The es5pro feels stiffer than the Ghost. However, as mentioned I didn't measure the main compression not did I measure the head length before tensioning.
04-19-2014, 09:02 PM #7
Also the side support stiffness as well.
04-20-2014, 01:39 AM #8
04-20-2014, 01:44 AM #9
Yeah that is what I was getting at. But the question is... why?
04-20-2014, 08:17 AM #10
Maybe the real question is, which one plays better?
Cheung liked this post
04-20-2014, 06:00 PM #11
For the which one plays better question.
I let a local coach try them both out. He liked the one from the Ghost better! He think the tension is higher and less vibration!
I tried them myself. I think there is slightly more resonance on the es5pro one. But honestly I think the es5pro one has better bounce to it. I need to spend more time with them and get more different opinions.
Unfortunately I think ultimately how well some string comes out might end up being partly personal preference.