Yasaka Rakza 7 is doming the wrong way

lodro · Oct 1, 2020

This rubber, Rakza 7 right after taking out of it's envelope has developed a dome.
It curls up exactly the opposite way as it would when one uses the boosters on the sponge.

I got another couple of rubbers (61 seconds) that are doing the same.

When glued down using either revo3 or XVT glue-sheets , then left overnight in a press it comes out alright
but within a couple of hours the rubber are "doming and come off the glue completely.

Does this happen often and what would be the remedy ?

thanks for you input
lodro

yogi_bear · Oct 1, 2020

Try waiting for 2 to 3 days before gluing. Also, is your blade sealed?

lodro · Oct 1, 2020

Thank you,
Yes, the blade has been sealed and lightly sanded with 600grit...................long long ago.

Are we expecting the rubber to come flat again ?
Because while this one is new out of the packet, the 61 second rubber has been domed forever and whenever i check it it is still domed.

Konrad Bak · Oct 1, 2020

deleted

yogi_bear · Oct 1, 2020

also take note that Rev. 3 has some sort of speed glue-like effect though minimal. even if this is a new sheet, are sure this is a fresh batch or this has been sitting in a shelf for a long time already?

Attitude · Oct 1, 2020

My rakza 7 did the same and even worse.
But it never got lose or even off the racket after gluing. The dome is acutally way too weak to peel itself off of a blade. Maybe you failed to glue propperly. Happens to the best

Tango K · Oct 1, 2020

It’s modern rubber, not paper

))) nothing wrong in the photo. U might have just not put enough glue on it.

burhanayan · Oct 1, 2020

I find this good for boosting. Dome flattens earlier.

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flash · Oct 1, 2020

I have had Rakza 7 dome the wrong way new out of package before. I think that the booster they use at factory has dried up, or the rubber has been on shelf for long time, or around to high of heat, which ever the oil in sponge has evaporated.

lodro · Oct 1, 2020

Attitude said:
My rakza 7 did the same and even worse.
But it never got lose or even off the racket after gluing. The dome is acutally way too weak to peel itself off of a blade. Maybe you failed to glue propperly. Happens to the best ��

Thank you for your kind input.
Yes indeed I have made 1 or 2 mistakes in my life before

Thing is, I prepared both FH and BH rubbers together and the red Tibhar MX-.S sticks perfectly fine.
I will let the Rakza out in the open air for a few days and then try again

lodro · Oct 1, 2020

burhanayan said:
I find this good for boosting. Dome flattens earlier.

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Thank you, so it would be perfect if i would boost - but I never have and unless forced at gunpoint i probably never will

lodro · Oct 1, 2020

flash said:
I have had Rakza 7 dome the wrong way new out of package before. I think that the booster they use at factory has dried up, or the rubber has been on shelf for long time, or around to high of heat, which ever the oil in sponge has evaporated.

I see . I did not know that these rubbers were factory boosted. So, it serves me right.
As for the other points you are making, I have no control over these things. I pays me money and get what they give me.

Thanks for your kind input

lodro · Oct 1, 2020

Tango K said:
It’s modern rubber, not paper ))) nothing wrong in the photo. U might have just not put enough glue on it.

Thank you.
I used the same procedure and same amount of glue on both sides and the other side, a MX-s sticks fine

zeio · Oct 1, 2020

Welcome to the club of Tensor where rubbers reverse dome like a loaf of bread.

lodro · Oct 1, 2020

zeio said:
Welcome to the club of Tensor where rubbers reverse dome like a loaf of bread.

Thank you very much for your post.
It helped me re-gain my sanity as i can now stop wondering what kind of mistake i made

cheers
lodro

Yasaka Rakza 7 is doming the wrong way

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