New sram pf30 design

Discuss light weight issues concerning road bikes & parts.
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NiFTY
Posts: 1145
Joined: Sat May 26, 2012 11:26 pm

by NiFTY

Anybody used a new sram pf30 bb where the bearing shields actually continue into the inside of the bearing race to sit between the spindle and inner bearing race? I have checked and it doesn't change the diameter, it still accepts a 30mm spindle easily. Just haven't seen this before.
Evo 5.02kg SL3 6.77 Slice RS 8.89 viewtopic.php?f=10&t=110579" onclick="window.open(this.href);return false;" onclick="window.open(this.href);return false;

by Weenie


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MayhemSWE
Posts: 126
Joined: Thu Mar 12, 2015 12:44 pm
Location: Stockholm, Sweden

by MayhemSWE

New version also has much more overlap on the center sleeve, so that it can extend to cover the wider length of a 386EVO shell. Installed one on a friend's new Open UP earlier this week along with a Force 1 crankset.

grover
Posts: 1126
Joined: Mon Jul 26, 2004 1:06 pm

by grover

I've got really positive outcomes with them. The plastic sleeve extending between bearing and spindle seems to stop the creaking you'd often get. Having the plastic shell helps too. Many of our Cannondale's come with FSA PF30 bottom brackets. Alloy shell, steel bearing races that contact directly with alloy spindle. Often installed with minimal grease at the factory. Seeing as I have to pull them out to install properly I just replace with a SRAM one and get silent use for ages until the bearings themselves are worn out.

uraqt
Posts: 826
Joined: Mon Apr 03, 2006 8:53 am

by uraqt

Link, pix?

Please and thank you ..

C

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