Tell me where you rode today...

TommyF said:
Why would carbon cranks be any different on an e-bike? If anything, I would guess less abuse as the motor is doing some of the work. Any bike can smash into a rock with a crank arm. I was the victim of a failed carbon crank so their not my favorite either.
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The benefit of saving ~100g on a 20,000+ g bike is pointless compared to the obvious downsides such as them breaking like the post above.
 
TommyF said:
Why would carbon cranks be any different on an e-bike? If anything, I would guess less abuse as the motor is doing some of the work. Any bike can smash into a rock with a crank arm. I was the victim of a failed carbon crank so their not my favorite either.
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While not my personal choice, I can understand the desire for really light cranks on an XC bike. It seems to be especially bad for an e-bike because in order to get the most out of the assist, you tend to pedal in situations you often won't on a normal bike, thus there is an increased risk of rock-strikes. That's basically what happened to my friend - she was pedaling through a rock garden, got her timing a bit off and smashed the pedal into a rock. The pedal is fine, but apparently the hit had enough force to separate the aluminum thread insert from the carbon cranks.

Kinda makes me wonder if one could get a new thread insert if it could be epoxied into the crank... but how to make sure it's aligned correctly as well as a void-free interface sounds tricky.
 
And ……….back to riding!
Up in Jim Thorpe. Haven’t done this loop since early 2000. 20 mile. Almost 1800 ft of climbing. Start at Inn at Jim Thorpe up past mansions to Switchback trail to Summit hill down at 45 mph then climb back up old mountain road to ridge trail (fire line trail) through some serious chunk down flagstaff mountain at 35 mph back to the Inn via stitch back trail.
Here are some pics of this morning’s ride!!
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TommyF said:
Why would carbon cranks be any different on an e-bike? If anything, I would guess less abuse as the motor is doing some of the work. Any bike can smash into a rock with a crank arm. I was the victim of a failed carbon crank so their not my favorite either.
Click to expand...
I smash my cranks 10x more on my e-bike. Being able to make stupid technical climbs at speed requires constant pedaling. This is not always a great idea. Most of my crashes since riding an e-bike have been on climbs. They are not fun.

BTW, my cranks are carbon and have been smashed numerous times with minimal damage (so far.)
 
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