That's an unfortunate Panda Power Revelation. I've stuck a 60x5mm turbo gold screw into the head - it felt pretty secure. I then dremeled off the head of the screw. Next I covered the screw with JB weld epoxy resin and its currently curing. I'll have to give it some very careful playtime against a wall before I use it opposite a a human opponent. The owner will be happy to have it back! Bare specs were 80.2 34.5 330 including screw. I wonder if my scales are wrong as this was originally a 87/295 I believe.
sorry to be a pooper, but it won't hold. it will hold for bending force, but won't hold for torsional force, the leverage is too small for that little surface area. I will be happy to proven wrong though.
That is truly scary... like someone tries to re-attach a person's head after it has been decapitated...
Interesting. I welcome feedback, and would rather be properly forewarned than hurt someone. What are you basing this on? Just that there is hope that it is nothing concrete as you said you are you are happy to be proven wrong I would hope that gap filling effect in a tight tube and 30mm (inc coil) length for (insert calculation here) surface area would work. I'll chalk the hand to check for rotation. Is there a rule of thumb on how long to run smash drills on something to test it?
it is like gearing ratio. hitting a shuttle off center will create a torque quite high at the shaft. it is like someone is trying to push a door open at the handle and you stopping it at near the hinge. granted that's what happening with the shaft inserted and glued at the handle. but also notice that the diameter there is double (1/2 the force) and also there is a good 3-4 inches of shaft insert which is more than what you have here. as i said, i am happy to be proven wrong, and i am also curious if it will work!
I see your points. ID versus OD. And there is more shaft to absorb the torque before the handle. However I don't think there's enough leverage to overcome the epoxy. We shall see to use your analogy its like me trying to open a door and @dbswansea holding the hinge. I hope. Strength: 3960PSI - sounds like our Dave.
So I did a quick torsion check After 24hrs and its back in 2 pieces. The screw came out the non epoxy side. So I've done round 2 and will twist the heck out if it after 48 hrs. I'm hopeful based on how well it seems to be holding so far. Current dry spec with karakal pu super repalcement grip: 86.9 40.3 310. Bit of a brute.
Hmm... just in case you will let that Revelation finally rest in its well deserved peace and if your club mate will be looking for a replacement - there is another Revelation in close to mint condition in my possession. And since I have finally overcome my OCD and have bought a second JS10 4U, I can imagine to let go of it in case there is someone who is looking for one...
another thing u can do to make it torsionally stronger is to first sand off the top clear coat layer, and then wrap and glue a few wraps of carbon fiber over the area, maybe cover a total of 3 inches of the shaft. this will provide a lot more structural support.
Nice tip, thanks @kwun. If I can find such a thing. @s_mair I'm sure I can find a buyer on my shady black market!
i meant to tag @ice_pilot too so he knows where the next one is for his missus if my clubmate doesn't snap this one up.
Thanks for reposting pics. Did you already discuss how the break happened? It looks like a clean break. Did you clean the fracture surface? Carbon fiber does not (usually) break so cleanly. Interested in knowing outcome of repair. Unlike kwun, I don't think the torsion is the issue, I don't think it will last in holding the tension during a swing, especially for whipping motions like backhand or stick smash where the head is whipped back after contact.
Front man reached up for a high kill and our resident racquet breaker came from behind with a haymaker and went through it. I wasnt there but that's what i heard. We'll see it goes. The bottom joint feels secure but a lot of the resin came out of the top so I don't know how much there is actually bonding it. I've got a couple of ideas if it doesn't hold this time.
Your racket is now an ULTRA stiff. I think a screw with a tighter thread groove and using plastic anchors would make it more secure internally.
Thanks for the tip. I'm not sure I've got any rawl plugs that small but its a good idea for down the line if/when it falls apart. I was actually surprised how bendy this rev felt. I always had them down as stiffer. So it won't hurt to stiffen it up a bit.
