Wednesday, March 16, 2022

Broken Mavic Ksyrium ES Spoke -- Part 6 - Adjusting spoke tension

The wheel is not running true, after the broken spoke replacement.
I adjusted the tension on the silver replacement spoke as much as I can, but the tension is not quite as high as it should be.
Not much I can do since the nipple is about as deep as it can be.

This is the nearest spoke to the replaced silver one.
This is the one that I previously replaced a few years ago.
The replacement spoke was the right length/type except for the nipple design.
It's similar to what's on the wheel but the nipple is larger and requires a different tool.
I had bought the right tool when I installed this spoke.

I tried to tighten the nipple but the spoke is stuck to the nipple and turns with it, which ends up twisting the spoke.
I applied some penetrating oil & will let it soak over night.
I'll see if I can get the spoke to turn in the nipple tomorrow.

I also tried to adjust the spoke on the other side of the silver spoke to increase the tension on the non-drive side to better true the wheel.
This is an original spoke nipple and is pretty corroded inside (galvanic corrosion plus the salty air that I ride in).
I applied some penetrating oil and tried to turn it but the nipple broke apart.


I'm not too surprised since the broken spoke nipples seem to be pretty much stuck (both had to be drilled out).

Now that the "tool" portion of the nipple is broken, the only way to get it out is to break the spoke and drill it out like the other ones that broke.
For now, I'll leave it alone.
Ultimately, this wheel will become unserviceable due to the corrosion issue.
I guess about 8 years of riding at the beach has done it in.
On the bright side, 8 years is not bad for dealing with the corrosive environment.
I have a feeling that the aluminum nipple and the aluminum rim are made of different grade/type of aluminum and there is some galvanic corrosion contributing to the stuck condition also.

 

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