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mackgoo 06-15-18 07:53 PM

Argh
 
The dreaded bottom bracket creak. 2015 Ultra Torque Record and Threaded Record cups. Any ideas?

rosefarts 06-15-18 08:52 PM

I have similar UT for Chorus. There are only a few places noises can come from.

Is it safe to assume that you have greased or used paste on all threads, and everything is tight?

Check your pedals and shoes.

Is it a carbon frame? They transmit noise a lot more, you might consider replacing it with a steel frame.

Sometimes it seems like the crank and it's the seat or seatpost.

Your crank or bb shell aren't cracked are they?

AnkleWork 06-15-18 09:07 PM

A few ideas here:
Link

Kontact 06-15-18 09:13 PM

Teflon tape on the cup threads, plus grease, does tend to help.

rosefarts 06-15-18 09:17 PM

BTW, my BB is super quiet.

I might not be able to mount cranks 180 degrees apart but my cranks are quiet. Post back what you've done to troubleshoot and I bet we can solve this.

cpach 06-15-18 09:59 PM

First consider that it is very likely not the BB. The biggest weight/power transfer on a bike is related to your pedal stroke so all sorts of things clock to it. On carbon in particular, the frame is resonant enough that determining the location of sounds on the bike can be difficult. Pedals are a really common cause--but I've also seen saddles, QRs, headsets, rear hubs, etc, misidentified as BB problems.

If everything else is eliminated and it really seems to be the BB, remove the crank and BB cups, clean the threads, grease them, and torque to spec. If there is significant bearing feel, replace bearings. Grease between the crank, bearings, and the bearings to the cups. Make sure the UT bolt is torqued to spec. Threaded UT setups aren't particularly prone to noise.

mackgoo 06-16-18 05:13 PM

So it's an old Bianchi Ti Mega Tube. It has been set up like this for a few years. Does anyone know if the Super Record bearing will fit on the Record crank.
With the Ti frame is there any special assembly instructions? although this isn't a noise from ground zero but if I'm going to disassemble clean and put back together may as well do it what is accepted as the correct way.
I did just put new pedals on which I'm not happy with. I'm putting some old times on. It's been a few years, in SoCal so I'm thinking I'll take everything apart and clean, lube.

mackgoo 06-20-18 07:35 PM

So I haven't resolved the noise yet. I've ruled out pedals/cleats. When I get a chance I'm dissembling the drive train inspecting lubing tightening.
Until then I decided it's time to put the X4 through it's paces. Man, it's amazing how quiet a 30 year old bike with 30 year old components is. All I hear is tire hum and an occasional fd rub until I trim. The Syncro II is working perfect too. All's right in the world.

mackgoo 08-01-18 09:05 PM

Resolved.
I had been riding the X4 for the last few weeks. 30 year old frame with 30 year old components and as quiet as can be. Overtime I came back after a ride I'd put the X up and walk by the Mega Tube hanging next to the cross bike. It kept whispering take me, take me. So yesterday I broke down hung up the X and took down the Mega. Of course the creak was still there. As I was finishing the ride I was trying to concentrate where the noise was coming from and it seemed to be the rear hub. Today before the ride I checked my QR. It was really tight. I loosened it some and the creak is gone. Maybe I'll put a little grease on the contact points some time.


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