Pop went the crankset!

[Leviathan]

I ripped apart my KCNC RD1 crankset at the pedal entry point today. (Now I know what that creaking was!)Luckily Im a slow climber so only a few cuts & bruises. Oldish (3000kms crankset but nevertheless)
A couple of admittedly poor quality photos here






What Id like to know is:
1) Doesnt KCNCs (patented method) of drilling out the crank to reduce weight, and then plugging the end of the hole with a threaded bung, which sits orthagonal to the pedal hole, create a stress riser? Has anyone seen this failure before?
2) More importantly, I was considering a ROTOR 3D crankset as replacement, but dont they use the same system?
Fanks.

[RussellS]

3000 kilometers is old for a crankset?

[bricky21]

Hope that was a typo.

[cmh]

[justkeepedaling]

3000 km, jeez. There better be another 0 added to the back of that number

[bikerjulio]

at least it was patented

[MattSoutherden]

Next time I think of buying something other than a DA crank, I must remember to look at this...

[Mackers]

Glad you came off relatively unscathed!

[HillRPete]

Let me know if you want mine

Glad you're ok

[bikerjulio]

Obviously user error. Someone pushed too hard on the pedal.

[TimmS]

Can't withstand a laugh on he patented inscription.
An patent on a crash?

Sorry, I really liked those cranks before a saw this failure and I hope you aren't damaged.
Get some Rotors instead ...

[spandexboy817]

Next time I think of buying something other than a DA crank, I must remember to look at this...

It happens to Dura Ace too!

[CamW]

I'm totally not having cranks on my next bike

[Fisherfreerider]

I have seen cranks from just about everybody do that. Call KCNC, they will probably help you out. They hooked up a customer of mine whose spider cracked plus gave him a gift card to cover his race entry fee.

[redoaker]

Yes, Rotor uses the same drill and plug method.

Good to see there wasn't any leg or foot meat hanging on the stub of that crank arm!