Blade’s weight depending on humidity? How much?

[lodro]

@longle @lodro I know exactly hhhhh


Actually I like playing against such players if there is no humidity. And I like when a very trained sports university player loses against them too hhhhh it's so funny to see their face. All the great multiball training and can't beat some junk rubber player hhhh
But the best is when two of these kinds of players meet eachother and none of them can play. That is comedy gold.

Off topic but never mind , while i got your attention : What rubber could i use that is not affected by humidity and could replace my H3 commercial unboosted BH rubber ??

 

[Larshos]

Okay I succeeded in drying my wood - put it in Airfryer at 80oC in 2 mins (don't put in microwave oven or the carbon fiber will catch fire) - and it reduced the weight by 0.8gr !

View attachment 39096

Lol thank you for your (potential) sacrifice

 

[Larshos]

@mocker88 do you have any input here? Being a retailer of Yinhe and general enthusiast of Chinese TT products
(I was planning to buy it from your shop, but you didn't have it in your assortment..)

 

[Zwill]

Off topic but never mind , while i got your attention : What rubber could i use that is not affected by humidity and could replace my H3 commercial unboosted BH rubber ??

Awww man... that's so hard to ask. Maybe Battle 3 is a good shot at that. I think it handles humidity better since it's rather matte and sticky. I'm unsure about the red colored one tho a little bit. I used the black and there is difference between chinese black and red rubbers.

When I was in Guangzhou I saw some amateurs using softer Palio CJ8000 on BH, they had lilac color sponge. If there is humidity anywhere it's South China. But even they used 2 black rubbers on the same racket so... Sorry I can't say more about the CJ8000 other than sponge color since I know there's a bejillion versions and the topsheet is the same, no marks which is which.

 

[PhoenixTT]

Global warming will increase humidity. Our rubbers be slippery and will not work anymore. Our blades will be soggy. TT is dead.

 

[lodro]

Awww man... that's so hard to ask. Maybe Battle 3 is a good shot at that. I think it handles humidity better since it's rather matte and sticky. I'm unsure about the red colored one tho a little bit. I used the black and there is difference between chinese black and red rubbers.

When I was in Guangzhou I saw some amateurs using softer Palio CJ8000 on BH, they had lilac color sponge. If there is humidity anywhere it's South China. But even they used 2 black rubbers on the same racket so... Sorry I can't say more about the CJ8000 other than sponge color since I know there's a bejillion versions and the topsheet is the same, no marks which is which.

thank you.
I will try a battle 3 black, nobody will even notice or care here if i play with two 2 black sides.
When i re-started playing in 2017 i did try CJ8000 s, i think they had cream colored sponge. They were alright at the time and the kind of (non)technique had then. 😂

 

[PoppaChubby]

Don't put blades in airfryers: your relative humidity level is always higher than the one in the airfryer, so the wood's moisture cells will absorb humidity in 2 or 3 days and you'll get the same weight as before putting it in the airfryer. Of course when you put it on the scale right after the airfryer it's lighter, But comme back here in 2 or 3 days and tells us what happen...

 

[plunder]

air tight bag w silica gel keeps the racket at lowest weight possible.

after 20 pons , the gel is saturated enough for a replacement

10g gel -> 13g

all of the moist is from the sweat 💦 on the wood handle

 

[al_111]

Palio CJ8000 on BH, they had lilac color sponge.

Lilac sponge is 36-38 deg.

 

[lodro]

Lilac sponge is 36-38 deg.

both red and black are on the way, will be interesting to see which one is less sensitive to hot humid weather

 

[kevin.c]

I just lacquered two brand-new blades and left them in the sun to dry. To my surprise, both blades lost about 1 gram each despite the added lacquer layer. One blade went from 90g to 89g, and the other from 95g to 94g after roughly 40 minutes in the sun.

 

[Larshos]

I just lacquered two brand-new blades and left them in the sun to dry. To my surprise, both blades lost about 1 gram each despite the added lacquer layer. One blade went from 90g to 89g, and the other from 95g to 94g after roughly 40 minutes in the sun.

Oh wow, that quickly? Did you take them straight out of the plastic covering before sealing?

 

[mocker88]

@mocker88 do you have any input here? Being a retailer of Yinhe and general enthusiast of Chinese TT products
(I was planning to buy it from your shop, but you didn't have it in your assortment..)

Well not really. No more than I know that wood sucks up more water from the air when the humidity is high and less when it's low. That should alter the weight a bit I guess. No sorry, I haven't ordered this one yet

 

[kevin.c]

Oh wow, that quickly? Did you take them straight out of the plastic covering before sealing?

One was taken straight out of plastic covering and another was a day before. Both with similar results

 

[dingyibvs]

Wood is full of pores, channels designed to shuffle water around. Unless you can keep your blade airtight 100% of the time its moisture content will equilibriate with its surrounding environment. Lacquering will make this process longer, more useful when you have intermittent high exposure to moisture, but it won't stop it.

 

[Larshos]

Ok. Thank you all for your replies!

To conclude, this change of weight is normal, and to discern if the sample is lighter than average, average or higher than average for the model of your blade, you should weigh it just after removing the plastic film and compare to the manufacturer’s specifications?

 

[Wakkibatty]

Absolutely -- atmospheric changes in humidity change the mass (and volume) of a blade over time a surprising amount. This naturally happens to varying degrees with ALL timber species (be they hardwoods or coniferous softwoods).

The type of blade (all wood or composite) makes little difference, though weight change is most profound with all wood blades, made using standard water-based wood glues, and the effect is most profound during manufacture.

When I make an all wood blade with water-based wood glue, it's not uncommon for a freshly shaped panel (ie a blade without handle scales) to weigh circa. 85-86 grams. By the time it's finished fully drying out (about a week later) the same panel weighs can sometimes weigh as little as 72 grams. It's usually about a 7-12 gram difference in average, but bigger swings than that are still possible.

Sealing a blade slows the whole process of wood gaining / losing moisture to the atmosphere a hell of a lot, but still doesn't completely stop it. To do that, you'd need to do something like encase your whole blade in thick epoxy.

As for the manufacturer's specs, these are always going to vary a fair amount, simply because average wood density is hugely variable.

 

[haggisv]

I just lacquered two brand-new blades and left them in the sun to dry. To my surprise, both blades lost about 1 gram each despite the added lacquer layer. One blade went from 90g to 89g, and the other from 95g to 94g after roughly 40 minutes in the sun.

I'd like to get me some of your magic lacquer that adds negative weight!

 

[kevin.c]

I'd like to get me some of your magic lacquer that adds negative weight!

Here you go : Blade Lacquer Revolution Nr.3.

 

[Larshos]

So I got another example of a U2, because why the hell not, I'm a grown man (at least physically, probably not mentally) that makes his own money etc. etc.

The first one in the video is the first I got, which I think sounds good, but the second one, I feel sounds a bit more muted or "muddy" when tapping on it in the sweet spot area? Not just the fact that it sounds like it have a slightly lower frequency, but a more unclear pitch. Am I on to something or not?
Video