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Bottom Bracket solution at last

by Jimnm
Sat, Aug 13, 2016 06:54
9

There is a great topic over on Bike Radar about Chris King developing a new standard of bottom bracket. The T47 which hopefully should solve the creeky push fit problems once and for all. It's a good read.  

If you're new please join in and if you have questions pop them below and the forum regulars will answer as best we can.

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9 comments

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Dnnnnnn | 8 years ago
0 likes

I'm just dreading the day I have to replace my square taper...kiss

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Langsam replied to Dnnnnnn | 8 years ago
0 likes

Duncann wrote:

I'm just dreading the day I have to replace my square taper...kiss

 

square taper bottom brackets from SKF last ca. 100,000km. Mine should keep me going for a while.

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FatAndFurious | 8 years ago
1 like

When it comes to creating new standards, nobody wins 

https://xkcd.com/927/

 

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kev-s replied to FatAndFurious | 8 years ago
0 likes

neildmoss wrote:

When it comes to creating new standards, nobody wins 

https://xkcd.com/927/

 

 

Very true, Mtb's now have 35mm diameter bars and stems as an option and ive seen some road bike manufactuers heading down this road too

 

 

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TypeVertigo | 8 years ago
0 likes

It's a modification of the PF30 standard, which I've heard is one of the most problematic of the press-fit bottom bracket designs.

T47 sounds great in theory but there are real-world challenges that prevent its adoption. James Huang (formerly of BIkeRadar) already wrote something up on this.

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VeloUSA | 8 years ago
0 likes

I agree with kev-s, another threaded bb pickle in the barrel.

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kev-s | 8 years ago
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http://www.bikeradar.com/news/article/could-chris-kings-new-bottom-brack...

 

Good read but it will never be adopted by all bike manufactuers so it will just end up being another standard to add to the collection

Would be intresting to see how many maufactuers are acutally using the Chris King design given that the article is now 9 months old

 

 

 

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Jimnm | 8 years ago
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Go to Bike Radar and type in Chris King in the search box. You don't have to log in for the article 

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kev-s | 8 years ago
0 likes

Got a link?

 

All i could find was this

 

http://www.bikeradar.com/gear/article/five-reasons-why-the-t47-bottom-br...

 

I think it maybe a good idea for people who's bb has begun to creak but as said in the article if its started to do it within the warranty period then demand a replacement!

 

As with anything on a road bike it will never be the one standard, just another one to the already too many that there are

 

Personally i like Colnago's approach of using two large threaded cups which you press the press fit bb into then thread into the frame, mines never creaked in 5000+ miles and as the bb shell has to be quite large it allows them to oversize the downtube making the whole bb area much stiffer and its all easily replaceable if you did ever have an issue

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