shug
Rookie
Looks like there has been a change on the website. Hope this means this unit is going to make a comeback.
ERT 300 Tennis Computer
ERT 300 Tennis Computer
ERT 300 Tennis Computer
- Thread starter shug
- Start date
shug
Rookie
Is there something to the Babolat racquet (brand) being so prevalent on the page? or Rooting the verbiage on the page.
The unit is making a comeback. The company is the Babolat distributor for Switzerland.
MathieuR
Hall of Fame
I use the ERT 700 which I "enherited" when I bought lifestock and barrel from a retired stringer.
I also have the StringLab 2, which is more accurate, but more time-consuming. Measured values are in the same order of magnitude; SL2 always "ERT 700 + 1 " (kg/cm).
Edit: I think every stringer should use "some time" a DT- measuring device. It is the only way to have an accurate quality control on a string job. (apart from the feedback you get on playability)
I also have the StringLab 2, which is more accurate, but more time-consuming. Measured values are in the same order of magnitude; SL2 always "ERT 700 + 1 " (kg/cm).
Edit: I think every stringer should use "some time" a DT- measuring device. It is the only way to have an accurate quality control on a string job. (apart from the feedback you get on playability)
TennisHunter
New User
Someone tried this?
https://www.stringlab.it/prodotto/pro-t-one-chromatic-string-tuner/
Do you know if it has any difference in precision with the ERT-300?
https://www.stringlab.it/prodotto/pro-t-one-chromatic-string-tuner/
Do you know if it has any difference in precision with the ERT-300?
With the Chromatic String Tuner you have to clip a small microphone to the racquet and tap the strings. I'd rather have the ERT-300.
MathieuR
Hall of Fame
Well, I wish that would be true. Thing is, you can only reproduce a consistent measurement from a Babolat RDC on another Babolat RDC.
What the conditions of the measurement are is a mystery.
I use a StringLab 2; gives consistent results. But uses its own set of conditions.
No comparison. No string factors to enter, no tapping with a spoon, etc.
I had one, sold it because i rarely used it. Sometimes I wish I still had it, but rarely. Hmmmm.
It really is a nice little unit if you're so inclined to use such.
Yep - I get that. Makes sense for professional stringers or stringers that are dealing with many different string types and different racquets that they want to track. Its market is definitely not for the hobby / friends & family stringer who has access to other tools that are still decent quality - just from a cost/benefit perspective imo. I do like that people are doing r&d into different technologies and innovating the sport!
Erhard
Rookie
Erhard
Rookie
The Babolat RDC DT mechanical measurement method is clearly defined: A 40 mm disc pulls the string bed down by 10 mm in the middle.
The required force is then displayed on a scale from 0 to 100.
The measured value is independent of the tennis racket and the string material.
For most players, the midpoint of 50 is a dynamic tension that plays very well.
This measuring method is the most reliable method for the stringer to check his work.
The required force is then displayed on a scale from 0 to 100.
The measured value is independent of the tennis racket and the string material.
For most players, the midpoint of 50 is a dynamic tension that plays very well.
This measuring method is the most reliable method for the stringer to check his work.
MathieuR
Hall of Fame
Bullocks!
A scale from 0 -100.....
What is the dimension of this unit? How is it calculated? Is the scale linear, exponential.....
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Erhard
Rookie
The dimension is actually irrelevant. Call it "Potatoes"
0= no resistance (Hole). 100 = full resistance (Steel plate) .
After the measurement I know in which area my DT lies.
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uk_skippy
Hall of Fame
As long as they know how to use it properly.
Onsite stringers should also have access to them as the number of times we get asked for this info; or to confirm we're hitting the numbers the player wants. They even ask to use 'our' ERT's; and I've had a major player keep hold of mine for 2 days!!
Different locations on the stringbed can give different results.
lidoazndiabloboi
Hall of Fame
What is the proper location to measure? If a racket has 19 crosses, I would clip it on cross string 9 and 11, correct? What about a racket with 20 crosses?
Rabbit
G.O.A.T.
yeah the instructions say to put it in the center and be consistent
uk_skippy
Hall of Fame
Definitely be consistent where you place it. We normally go for 9th cross down for the single leg on the ERT; doesnt matter what pattern the racquet is, with an exception of Wilson spin frames where we probably go for 8.
But even then, you need to place it in the exact same location
You can also compress the unit MORE or less to fit between different cross strings. (usually two options at best)
I've tried it both ways and it seems to remain consistent between the two, so that is good.
I found the unit to be very good/consistent and uses very sound technology. Very repeatable, etc.
I've tried it both ways and it seems to remain consistent between the two, so that is good.
I found the unit to be very good/consistent and uses very sound technology. Very repeatable, etc.
Rabbit
G.O.A.T.
@struggle - agreed. The only real problem I had with mine was that you had to give it a few between measurements. Mine would crap out even with new batteries.
I think it's a fine unit and better than any phone app. However, all it did was get between my ears and dance. I sold it for what I paid for it and haven't missed it (until this thread ).
I think it's a fine unit and better than any phone app. However, all it did was get between my ears and dance. I sold it for what I paid for it and haven't missed it (until this thread
).
Rabbit
G.O.A.T.
I had to let mine sit for a few minutes powered off and then start it back up and retest.
Rabbit
G.O.A.T.
If you were a touring professional forced to use a different stringer/machine at each stop, they are of use. You tell the stringer you want it strung at 58 pounds -- reference tension. The target for your dynamic tension is 52 pounds. So you tell the stringer 58 pounds and test the string bed when it comes back. If it's 54 pounds, then on your next restring you tell the stringer 56 pounds. Basically, the pro is trying to get a consistent feel from one stop to the next. Some pros really care about that, the majority I've strung for don't.
Please note these are only examples. no real data was used in the composition of the above statement.
its the simplest, most straightforward way to “compare” and/or monitor tension trends (loss) over time. @Rabbits point above is spot on.
there are other ways, but they are not as repeatable or “accurate”. (Racquet tune, string meter etc…… in fact those are both pretty bad but better than nothing)
Which professionals have you strung for?
If I took a reading with the ERT300 three times a day, morning, noon and night after stringing a racquet, everyday for two weeks, would I get the same reading every time? This is without using the racquet.
MathieuR
Hall of Fame
I think yes, if you pre-stretched the string (really pre-stretched, so ref.tension + 15-20kg).
In all other cases you will see a decline. Most of it first 24hrs. I think it will stabilize after 3 days.
(But if you would start playing, it will again have a decline. Most of it the first 2-3 hours)
The decline is very much string and gauge dependant.
Rabbit
G.O.A.T.
Pre-pandemic, we had a WTA ITF tournament here in town. The pros you may have heard of include:
Eugenie Bouchard (possibly - she played the tournament when I was stringing for it, nobody knew who she was then and I didn't write her down [dammit])
Johanna Konta
Jarmilla Wolfe
Laura Siegemund
Allie Kiick
Irini Falconi
Rabbit
G.O.A.T.
Agreed. If you get to "into" it, the process will dominate your thinking which isn't good for on-court.
New color scheme coming for you, Marietta!!
Oh cool. That's mad that you worked for them. Yeah, anyway, my last stringer put the DT on a sticker on my racquet. I never used it. For me, playing with the racquet tells me if I need an adjustment in tension. But pros are fussy. Sometimes they seem superstitious more than having true knowledge about equipment.
shug
Rookie
The new website www.ert300.com will be online on June 15.
On it all information like price / delivery / order etc. will be included.
Orders will be possible on the website www.ert300.com from June 15 and delivery will be from July 1.
On it all information like price / delivery / order etc. will be included.
Orders will be possible on the website www.ert300.com from June 15 and delivery will be from July 1.
shug
Rookie
I will use it as a reference for my clients. It's not needed for me seeing's that I restring after every use, unless I'm exercising my serving muscles and don't expect my serves to drop.
you’re all over the place. Never used one but then telling people there’s no need for one. I’d check out of this thread if I were you.
TIA
There's no need for threats. I asked you if the device would give the same reading if you took a reading 3 times per day for 14 days without using the racquet and you didn't answer? This makes me think it would give different readings.
If it says 50, then 48, 46, back to 48 is it really any use? Many a time I've taken a racquet out on court and felt the stringbed was too firm, but then after 20 minutes it settles in and feels good. This is in my opinion the best way to tell.
I'm just asking people to think twice before rushing out to spend their hard earned money on what appears to me to be an expensive little toy.
