Found that annoying little creak today

[Mickeyspinn]

Didn't realise it would have a grain as machined from billet. Would make sense. Every days a school day

Hmm I thought Middleburn cranks were a combo of forged and machined! They do seem to be the lesser posted failures ....
Everything has a grain to some extent especially billet it's either rolled or extruded before being machined .
I have a morbid curiosity of component failure i find it very interesting! I'd thoroughly recommend with fancy light cranks absolute mechanical hygiene on the tapers...anything in between those faces even just compacted grease stains is far from ideal. And always use steel bolts

 

[mk one]

Bit of duct tape and it'll be fine

 

[MSYT]

Eeeshh. I put a set of Middleburn's on my 91 Schwinn 90PDG and they've begun creaking very quickly. I was thinking it was a cheap BB but maybe I'll take them off and try a different crankset... just in case.

 

[eric_james]

That's well dangerous imagine if you was going downhill at 30mph

 

[Imlach]

On the bright side, no crank puller needed.

Glad you're not hurt.

Makes me happy I am riding the modern rs7

 

[retrobikeguy]

@longun ......Scaremongererer....

Now all the middleburns are worth nothing

 

[longun]

Replaced with some newer oclalink ones, tbh their age,use, my weight I'm not shocked, little gutted but never mind.

Just worth checking more frequently, especially on these older more boutique parts.

 

[My_Teenage_Self]

Rs3? I believe it was the RS7 that was the first forged crank middleburn made? RS3 were simple CNC billet.

Happy to be wrong.

 

[Woz]

I heard they were forged in Italy, then machined out and finished in the UK. RS7 had a DH warranty. RS8 did not.

 

[enigma]

Crap hope this is not my creak! I will be checking I have these same cranks on my Explosif, and I often have summer creaking on this and my old Kilauea with the original Middleburn first generation.. ive ridden both for years, and assumed it was just temperature difference etc, as its not all the time and not audible anyway if it happens in the cold.. I was always very wary of not over tightening things since I snapped the retaining bolts for the inner ring on the older pair years ago, and not been able to find replacements! I am checking both very carefully now before any more rides! I have ahem .. gotten a little more portly in the twenty plus years I have owned both steeds! Thankyou for sharing. If I find anything will report back.