he’s got a whole suite of fuchsia/purple things to match his Rawland!
I’ve got a couple sets of clothing that conveniently match my different bikes
- Teal/Fuchsia/Purple for Rawland Stag
- Orange/Light Blue for the Elephant NFE
- Red/Black for the CycleFab CycleTruck
- Burgundy/Green for the Trek 720
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What do you do when you ride the same bike to work multiple days in a row?
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I break the Matchy-Match oath and clash!
FOR SHAME!
This is jsut the kind of eccentricity that tarck is here to give shelter to.
Shine on, you matchy diamond.
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Counterpoint: it sounds like a bit much.
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Just a bit much enough!
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It only sounds like a bit much, in reality it looks amazing.
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Man, I missed this old conversation. Somehow haven’t read this thread.
Raw aluminum definitely oxidizes very rapidly. We have to chemically treat and etch away any oxidation, then neutralize, rinse, and immediately glue.
@EndpointBraden I’ve been seeing those failures on 9000 left cranks for a few years. It usually starts with a bit of oxidation showing through the seam, then separation starting at the bb end/ snapping at the pinch bolts. Its hard to tell on some if the pinch bolt crank came first and caused the breach, but tiny crack is a common theme on those failures. If there’s white stuff along the bond, bad news.
That being said, waaay more sisl2s crack percentage wise, from my limited view.
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Shimano: “our cranks don’t break as often as a Cannondale one.”
It’s utterly anecdotal but…
8 years slinging Cannondale only processed two “broken” cranks. Both on bikes piloted by dudes with fucked up alien sweat.
Processed 4 borked Shimano cranks this year.
Frankly this is why I didn’t go with a Shimano crank on the latest bike. (also mmmmm subcompact nerd gears)
I trust Shimano engineering more than most companies, but it seems like they really fucked up their process control on the earlier generations of bonded cranks.
I’m curious to see what Dura Ace R9100/Ultegra R8000 failure rates look like in a few years. Is 105 still hollow forged, or did they switch to the glue bonded design for R7000? Are any of the MTB cranks glue bonded?
Seems like your customers are lucky and unlucky. But how many cranks were sisl2s?
We only sold sisl2 in 2013, but from those, the rate of cracks was crazy.
The 6800 failures seem more recent. If they’re anything like 9000, they take a few years. Every 9000 failure I’ve seen has been pretty old.
Also of note. a lot of cracked cracks isn’t as a power meter issue, so we often catch some of those early before a complete failure.
How many rotor failures have you seen? Praxis as well?
Amy, I in know way doubt your experience. And I left a Cannondale shop in 2015 so I’m not dealing with as many Cannondale cranks now.
I did process a warranty on an R8000 crank this month though. Less than 6 months old.
I broke one Rotor crank myself. Cracked where the spindle is swaged into the drive side arm of a Rex3. Only issue I’ve seen and I sell more Rotor than anything else for upgrade cranks. The ALDHU24 design eliminates the swaged spindle interface so if anything should be even less prone to failure.
I have yet to see a broken Praxis and given their design I’m not surprised. Their pressfit bottom braket is still dumb though. Their threaded one is far better and I’ll be using more of their sub-compact (sortof) cranks this year for sure.
Does the 8000 have a similar failure mode to the 6800/9000 series?
I assume r8000 drive side is bonded. With 9000, both sides were bonded, whereas with 6800 the left is forged, so for 6800, nearly all failures are drive side.
Oh interesting, I didn’t know that about 6800. All the 9000 failures I’ve seen have been drive side, too.
Shimano crank failure chat is bumming me out. I’ve been the “they may be ugly, but at least they work” camp since 6600 came out.