Praxis BB conversion for press fit

pinno

I will soon be in receipt of a new Wilier frame.

Unfortunately, it has a press fit BB. This is my first foray into press fit BB's but... I am going to fit a Praxis if possible given the (squeaky) greif BB30's seem to give people.

Frame specs is an 86.5 BB.
Which Praxis for Campag Ultra do I need?

I contacted Sigma Sports and they sent an email saying that my query would be answered between and 5 days! They stock Praxis.

mfin

I think, but this is just a think, that Praxis don't make one for that combination. I could be wrong though!

dj58

I think mfin is correct, they don't do one for a 86.5 BB shell.
https://praxiscycles.com/product/conv-bb-campagnolo/

shortfall

I was going to suggest one of the Hambini ones but when I googled it I ended down a rabbit hole concerning a spat between him and a woman from a cycling Weekly which would make a great thread in Cakestop. Anyway, he explains the issues with pressfit and offers what appears to be an excellent if pricy solution. If I had a recurring creak I'd probably stump up 200 quid if I knew it was going to cure it though.

First.Aspect

shortfall said:

I was going to suggest one of the Hambini ones but when I googled it I ended down a rabbit hole concerning a spat between him and a woman from a cycling Weekly which would make a great thread in Cakestop. Anyway, he explains the issues with pressfit and offers what appears to be an excellent if pricy solution. If I had a recurring creak I'd probably stump up 200 quid if I knew it was going to cure it though.

Yeah, there's something to be said about not actually disliking the person you are giving your money to.

He's a character, that's for sure, and doesn't seem to like that road bikes aren't made to aerospace standards.

Have you looked at Hope? I just acquired a bike with a pressfit. Hope seem to do some conversion sleeves that thread into one another and clamp against the frame that way.

joe_totale-2

I was going to suggest Token as the Token Ninja has a good reputation.
Unfortunately it's only for Shimano cranks, not Campag ones.

I'm saying this whilst touching a lot of pieces of wood but I've got two BB30 bikes and they've run well and silently.

joe_totale-2

Just seen this, it's certainly not cheap but C-Bear do have a good reputation:

https://www.c-bear.com/en/products/bottom-bracket/pressfit-86-campagnolo-ultra-torque

pinno

joe_totale-2 said:

Just seen this, it's certainly not cheap but C-Bear do have a good reputation:

https://www.c-bear.com/en/products/bottom-bracket/pressfit-86-campagnolo-ultra-torque

I'll keep that in mind in case these let me down:



The 46 to 52nm tightening torque for the c'set and some Loctite should keep them in place.

pilot_pete

I’ve got CBear BBs in both my Colnagos. Very good. No problems.

PP

arlowood

Yep the CBear is available from Sigma for £95

https://www.sigmasports.com/item/C-Bear/BB865-Ultra-Torque-Ceramic-Bottom-Bracket/FNKE?utm_source=google&utm_medium=base&co=GBR&cu=GBP&glCountry=GB&id=730382&ds_eid=700000001845766&ds_e=GOOGLE&ds_c=UK_EN_Profit_Google_Shopping_All+Users_Brand_All+Products_Desktop&ds_cid=71700000047514192&ds_ag=E_D_730382_C-Bear_BB86.5+Ultra+Torque+Ceramic+Bottom+Bracket_Bottom+Bracket_95+GBP&ds_agid=58700004772534814&ds_k=PRODUCT_GROUP&ds_kid=92700040703411125&ds_kids=p40703411125&gclid=CjwKCAjwxqX4BRBhEiwAYtJX7b4uaLv9XTARv8QHX0TaRAnNdrRrtHvAvSPNMFpMrLVsRcuIpD5AOBoCMAEQAvD_BwE&gclsrc=aw.ds

Not cheap but an investment in "peace of mind" maybe

Ben6899

I have a Rotor BB fitted into a BB30 shell, to run 24mm Shimano cranks. Maybe they do something similar for BB86 and Campagnolo UT?

pinno

Ben - I will try the converters (pictured above) and then report back. I've ordered them.