[hawkinspeter]

I had noticed a creak/noise from my bike, especially when accelerating from stopped. It sounded almost like the chain clunking into position, so I ended up replacing my outer chainring as it was a few years old, but the noise persisted. I was contemplating whether it was pedals, bottom bracket bearing or even rear cassette, but yesterday I discovered the answer.

I was just starting off on a ride and heading uphill on my road – negotiated my way round a van coming downhill and then got off the saddle to accelerate and start warming up. Hit the deck almost outside my front door and luckily got a lightly grazed knee and knuckle out of it, though my handlebars looked very skewed. The van driver did stop and check that I was okay which was nice of him.

So, sometimes a creaky noise isn’t what you think it is.

Topic

[Hirsute]

<gulp>

[hawkinspeter]

FC8000
FC6800

[Hirsute]

Ah, it’s back.

Ah, it’s back.

Which version of ultegra is this one ?

[dee4life2005]

I’ve had my right-hand crank

I’ve had my right-hand crank sheer off just like that on three separate ultegra cranksets now – twice on the same bike within about 14 months. All bikes are well maintained, not its not a neglect issue. Dura-Ace also suffers this problem. Only way to guarantee it never happening is to switch to 105 which has a solid crank-arm and isn’t two separate pieces bonded together (as far as I know). 

[jaymack]

Bloody hell, that could have

Bloody hell, that could have been really nasty. Van–man gets a bad press on this site so thank you for adding a little bit of balance by reminding us most road users are decent most of the time. 

[hawkinspeter]

hirsute wrote:

53/39 – they make ’em tough in Bristol.

Looks like I will be checking my cranks regularly from now on !

I thought I’d give the gearing a go at least until the crankset breaks again.

[hawkinspeter]

I tried putting the crank on

I tried putting the crank on the ground, inserting a big allen key and treading on it (with my foot on the crank), but I think my allen key was a bit cheap and kept flying out of the socket due to poor tolerances. After a few goes at that, I figured it was about time to replace my pedals anyway.

[Hirsute]

53/39 – they make ’em tough

53/39 – they make ’em tough in Bristol.

Looks like I will be checking my cranks regularly from now on !

[Welsh boy]

Dont be tempted to clamp the

Dont be tempted to clamp the crank in a vice to undo he pedal, you might sratch it and that would spoil it.

[Anonymous]

They allegedly have semi

They allegedly have semi-compact stock here: https://www.evanscycles.com/brand/shimano/ultegra-r8000-double-chainset—52/36-912779. Very steep prices at the moment, personally I’d just get a 105 one

[hawkinspeter]

Merlin’s got them in stock:

Merlin’s got some in stock: https://www.merlincycles.com/shimano-ultegra-r8000-chainset-11-speed-102855.html

(I went for 175mm 39/53)

[wycombewheeler]

hawkinspeter wrote:

Thanks.

I think I lead a charmed life – I could hardly have been closer to home and I’ve had worse injuries trying to remove a pedal. I only bothered putting a plaster on my knuckle when I went to bed as it was still weeping (for the lost crank).

Talking of pedals, I tried to remove the pedal from the broken crank without any luck, so I’m going to go for a pair of PD-ES600s to replace my old, stuck PD-A600s.

weeping for the 3 months lead time to buy a replacement chainset

HoarseMann wrote:

Good idea for reflective placement!

Tempted to get some of these, affix to front and back edges of the cranks, also see if I can fix to the SPD and SPD SL pedals (because, the law).

It would certainly be hard to criticise a cyclist for no refletives on the pedals if the entire crank arm was glowing.

[hawkinspeter]

Apparently (after watching

Apparently (after watching HoarseMann’s link to https://www.youtube.com/watch?v=FkEkQV-zK0s&t=181s) that’s due to whether it’s hollow bonded or hollow forged. The 105s, Tiagras etc.  aren’t breaking as they’re hollow forged, but the pricier ones use bonding. I’m now wondering if I should have bought a 105 in replacement, but I’ve already ordered another Ultegra which should arrive tomorrow. I’ll just have to keep an eye out for any cracks forming, especially if a new creak/click happens.

[a1white]

Always seems to be higher end

Always seems to be higher end Ultegra and Dura-Ace

[BadgerBeaver]

If you’re riding a bike with
If you’re riding a bike with fishing tackle for gears what do you expect?

[Author]

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