LEXON Road Carbon Crankset

[wintermute]

That is really crazy and unfortunate.  Glad you’re okay.  I’ve been riding my 24mm Lexon cranks pretty much daily.  No issues.  I remember watching a Trace Velo episode where he had a cheap pair of cranks that broke in the same place your’s did.

My biggest gripe with the Lexon cranks is that either their chainrings or spiders are out of spec. I have had non-stop issues with a oscillating chainrings causing minor cage rub on the FD. After switching to a Stone spider and Stone chainrings I was able to eliminate the oscillation.  This was also an issue with my 29mm Lexon cranks.

I may cave and order some Elilees or Cyberei later this year. Your post gives pause about continuing ride on them for safety reasons.


FWIW, I have removed and installed my Lexon cranks multiple times.

I don't know about you, but removing the cranks always felt unpleasant - there was a nasty creak/squeak as the bolt forced itself against the outer cover to pull the crank off.

Frustratingly I suspect Lexon will ignore my messages about this - because I already had a dispute with them over the spacing and spider. Whatever happens, I won't be going back to the system. I got them on the highest sale alongside a code and a refund that made them probably only £120ish total. A replacement pair is over £275. A Cybrei is close to £400.

Red E1's can be had for 299. The only issue would be if you had a frame that couldn't take DUB bearings.

[Da11as]

So I feel like I should make a post on here about this.

Third ride, my lexon 24mm cranks failed catastrophically.

The bolt that holds the crank arm on the left arm sheared off at the head whilst riding; the crank arm came away still attached to my foot. I'm lucky I'm still here. The bolt is clearly made of cheap aluminium (when you hold it in your hand it's way too light).

I suggest everyone checks this bolt for stress risers or fatigue. Similarly, be careful with the torque. It says capable of 45nm. I torqued to 40 and that felt like a lot - obviously too much for this.

Rule of thumb for chineese stuff is to replace excessively light parts with something more robust. I've had uncommon alloy bolts on my carbon cockpit (vedge-type mounting) which came loose very often until I rounded them during quick field fix. Changed them to steel bolts and have no issues since then with only 2g difference.

[biceryder]

I don't know about you, but removing the cranks always felt unpleasant - there was a nasty creak/squeak as the bolt forced itself against the outer cover to pull the crank off.

Frustratingly I suspect Lexon will ignore my messages about this - because I already had a dispute with them over the spacing and spider. Whatever happens, I won't be going back to the system. I got them on the highest sale alongside a code and a refund that made them probably only £120ish total. A replacement pair is over £275. A Cybrei is close to £400.

Red E1's can be had for 299. The only issue would be if you had a frame that couldn't take DUB bearings.

I have had it on and off about 6 times.  No squeaking or noises.  I did grease the threads and head of the bolt with white lithium grease before the first install.  I had squeaking during installation and removal with my 30mm Lexon crank and I’ve ridden that crankset pretty hard.